CN110270012B

CN110270012B - Graphene hair growing device

Info

Publication number: CN110270012B
Application number: CN201910417745.0A
Authority: CN
Inventors: 杨晓川; 龚月望
Original assignee: Guangdong Ielts Electronic Co ltd
Current assignee: Guangdong Ielts Electronic Co ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2024-07-23
Anticipated expiration: 2039-05-20
Also published as: WO2020233079A1; CN110270012A

Abstract

The invention belongs to the technical field of physiotherapy products, and particularly relates to a graphene hair growing device which comprises a shell, a circuit board and a graphene heating component, wherein the shell is provided with a head cavity matched with the shape of a head, the graphene heating component and the circuit board are both arranged in the shell, the graphene heating component is electrically connected with the circuit board, and the side part of the shell is provided with an electrical interface electrically connected with the circuit board. When the graphene hair growing device is used, after the graphene hair growing device is electrified, far infrared rays generated by the graphene heating component can generate a warm effect and a resonance effect on the head of a human body, so that high-frequency vibration is generated on the head and scalp positions, oxidized free radicals can be removed from the dermis layer to the epidermis layer in depth, and the blood circulation of scalp microvascular is promoted, thereby reducing the occurrence of alopecia and assisting in better hair growth.

Description

Graphene hair growing device

Technical Field

The invention belongs to the technical field of physiotherapy products, and particularly relates to a graphene hair growing device.

Background

In modern society, the people often stay up for reasons such as excessive mental stress, frequent stay up and the like in the processes of life, work and study, resulting in reduced resting time and insomnia anxiety, thereby causing people to stay in a state of mental tightness or disorder for a long time. When people are in a state of being in tension or imbalance for a long time, the hair can be fallen off, and even good growth of the hair is affected, so that the spirit of the people is further tensioned or imbalance, and the life and work of the people can be greatly affected for a long time.

Disclosure of Invention

The invention aims to provide a graphene hair growing device and aims to solve the technical problems that in the prior art, hair is separated and good growth cannot be achieved.

In order to achieve the above object, the graphene hair growing device provided by the embodiment of the invention comprises a shell, a circuit board and a graphene heating component, wherein the shell is provided with a head cavity matched with the shape of the head, the graphene heating component and the circuit board are both arranged in the shell, the graphene heating component is electrically connected with the circuit board, and the side part of the shell is provided with an electrical interface electrically connected with the circuit board.

The above technical solutions in the graphene hair growth device provided by the embodiments of the present invention have at least one of the following technical effects: when the hair brush is used, the shell is worn on the head of a human body, wherein the head cavity arranged on the shell is matched with the head of the wearer, the electric interface is connected with an external power supply through the power line, so that the graphene heating component electrically connected with the electric interface supplies power, the graphene heating component can realize rapid heating, far infrared rays generated by the graphene heating component can generate a heating effect and a resonance effect on the head of the human body, the head scalp position generates high-frequency vibration, oxidized free radicals can be removed from the dermis layer to the epidermis layer in depth, the blood circulation of scalp microvascular is promoted, the occurrence of alopecia is reduced, and better hair growth is assisted.

In order to achieve the above object, according to another embodiment of the present invention, a graphene hair growing device is provided, which includes a housing, a circuit board, a battery, and a graphene heating component, wherein the housing is provided with a head cavity adapted to a head shape, the graphene heating component, the battery, and the circuit board are all disposed in the housing, the graphene heating component is electrically connected with the circuit board, and the battery is electrically connected with the circuit board.

The above technical solutions in the graphene hair growth device provided by the embodiments of the present invention have at least one of the following technical effects: when the hair-loss-reducing hair-growing device is used, the shell is worn on the head of a human body, wherein the head cavity arranged on the shell is matched with the head of the wearer, the battery supplies power to the graphene heating component, the graphene heating component can achieve rapid temperature rise, far infrared rays generated by the graphene heating component can generate a warm effect and a resonance effect on the head of the human body, so that the head scalp position generates high-frequency vibration, oxidized free radicals can be removed from the dermis layer to the epidermis layer in depth, the blood circulation of scalp microvascular is promoted, the occurrence of alopecia is reduced, and better hair growth is assisted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a graphene hair growing device provided by an embodiment of the invention.

Fig. 2 is a schematic structural diagram of another view angle of the graphene hair-growing device in fig. 1.

Fig. 3 is a schematic structural diagram of the graphene hair growing device in fig. 1 after the upper cover is hidden.

Fig. 4 is an enlarged schematic view of a partial structure at a in fig. 3.

Fig. 5 is a schematic exploded view of the graphene hair growth device of fig. 1.

Fig. 6 is a schematic structural diagram of a fixing seat of a graphene hair growing device provided by an embodiment of the invention.

Fig. 7 is a cross-sectional view of a graphene heating component of the graphene hair-growing device provided by the embodiment of the invention.

Fig. 8 is an exploded view of a graphene heating component of the graphene hair-growing device provided by the embodiment of the invention.

Wherein, each reference sign in the figure:

1-component body 2-graphene heating composite material 10-shell

11-Upper cover 12-inner container 20-graphene heating component

21-First adhesive layer 22-base material layer 23-second adhesive layer

24-Conducting strip 25-heating circuit layer 26-packaging insulating layer

40-Electric interface 50-fixing seat 51-battery cavity

52-Bump 53-fitting groove 60-cell

70-Circuit board 71-button 101-head cavity

102-Ear avoidance bit 121-liner body 122-annular retaining edge

1221-Spring clip 1222-clearance hole.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 8 are exemplary and intended to illustrate embodiments of the present invention and should not be construed as limiting the invention.

In one embodiment of the present invention, as shown in fig. 1 to 5, there is provided a graphene hair growing device, which includes a housing 10, a circuit board 70 and a graphene heating assembly 20, wherein the housing 10 is provided with a head cavity 101 adapted to the shape of the head, and generally, the head cavity 101 has a structure similar to a semicircle, and a cap thereof is provided on the head of a human body to stably place the entire graphene hair growing device. Further, the graphene heating component 20 and the circuit board 70 are both disposed inside the housing 10, and the housing 10 may house the graphene heating component 20 and the circuit board 70 and may support the graphene heating component 20 and the circuit board 70. Further, the graphene heating component 20 is electrically connected to the circuit board 70, and the side portion of the housing 10 is provided with an electrical interface 40 electrically connected to the circuit board 70. The electrical interface 40 may be connected to an external power source through a power line, so that power may be supplied to the graphene heating component 20. When the graphene hair growing device provided by the embodiment of the invention is specifically used, the shell 10 is worn on the head of a human body, wherein the head cavity 101 arranged on the shell 10 is matched with the head of the wearer, the electric interface 40 is connected with an external power supply through a power line, so that the graphene heating component 20 electrically connected with the electric interface 40 is used for supplying power, the graphene heating component 20 can realize rapid heating, far infrared rays generated by the graphene heating component 20 can generate a warming effect and a resonance effect on the head of the human body, so that the head scalp position generates high-frequency vibration, oxidized free radicals can be removed from a dermis layer to an epidermis layer in a deep layer, the blood circulation of scalp microvascular is promoted, the occurrence of alopecia is reduced, and better hair growth is assisted.

According to the graphene heating component 20 provided by the embodiment of the invention, the heating is uniform, the electric heating conversion efficiency is high, the heating speed is high, the heating efficiency is high, the bonding stability between the whole graphene heating composite material and the component body can be improved by the first adhesive layer, the bonding stability between the conducting plate and the base material can be improved by the second adhesive layer, in addition, the two adhesive layers are used for blocking heat, the heat generated by heating can be reduced from being transmitted to the component body and the inside thereof by blocking the heat, the heat loss is reduced, the influence of the heat on the components in the component body is avoided, and the effects of heat preservation and heat transmission loss reduction are realized on the heat generated by the graphene-copper composite conducting plate and the heating circuit; the conductive sheet and the heating circuit layer are arranged on the periphery of the graphene heating component 20, so that heat generated after electric heat conversion has obvious touch feeling and obvious heating and heating use feeling; and the outermost encapsulation insulating layer plays an insulating role, so that electric shock phenomenon caused by current and voltage of the conducting strip and the heating circuit layer is avoided, and the use safety of the graphene heating component 20 is improved.

The heating circuit layer is formed by printing graphene heating slurry in a shape of 'back', 'Z', 'S', and the like. The component body can be bar-shaped, plane-shaped and the like, and is covered with the graphene heating composite material to prepare heating products such as heating bars, heating films, heating pads and the like.

Preferably, the substrate layer is one of a PET film, a PVC film, a PE film, a PC film, a PEN film and a PP film, wherein the outer surface and the inner surface of the PET film are subjected to corona treatment; the first adhesive layer and the second adhesive layer can be one of an organic silica gel adhesive layer, an epoxy resin adhesive layer, a polyurethane adhesive layer, a polyamide hot melt adhesive layer, a polyolefin hot melt adhesive layer and an EVA hot melt adhesive layer; the packaging insulating layer comprises 40-60 parts of glass powder, 15-25 parts of silicon dioxide, 3-8 parts of hydroxyethyl cellulose and 60-80 parts of terpineol.

In the embodiment of the invention, the adhesive force of the first adhesive layer and the second adhesive layer to the substrate layer respectively can be improved by carrying out corona treatment on the surfaces of the two sides of the substrate layer, so that the adhesive stability between the first adhesive layer and the substrate layer and between the second adhesive layer and the substrate layer is improved; the PET film, the PVC film, the PE film, the PC film, the PEN film or the PP film are used as the raw materials of the base material layer, so that the thermal stability is high, the shrinkage rate is small, the mechanical properties such as strength, toughness, impact strength and the like of the foot rest are provided, the adhesive force with the first adhesive layer and the second adhesive layer is high, the adhesion is stable, and the detachment or layering is not easy; the organic silica gel adhesive layer, the epoxy resin adhesive layer, the polyurethane adhesive layer, the polyamide hot melt adhesive layer, the polyolefin hot melt adhesive layer and the EVA hot melt adhesive layer are adopted, the adhesive strength is high, the thermal stability is high, the adhesive can be stably bonded with the surface of the component body, the substrate layer and the conducting strip, the interlayer separation phenomenon is not easy to occur, the thermal conductivity is low, the thermal insulation effect is good, the heat transfer from the conducting strip and the heating circuit to the inside of the component body is effectively reduced, and the heat loss is reduced.

The glass powder, silicon dioxide, hydroxyethyl cellulose and terpineol are used as the raw materials of the packaging insulating layer, so that the current-voltage insulating effect on the heating circuit and the conducting strip can be improved, and the electric shock phenomenon is avoided, and safety accidents are caused; the glass powder adopted has small particle size, disordered structure, high chemical stability and strong steric hindrance capability, can be uniformly dispersed in an insulating layer system, and improves the performances of flame retardance, insulativity, weather resistance, scratch resistance and the like of the insulating layer; the electrical insulation performance of the adopted silica glass is excellent, the resistance is 100 times that of common glass at normal temperature, the dielectric loss of all frequencies is very small, the insulation compressive strength is high, and the encapsulation insulation effect is excellent; the adopted hydroxyethyl cellulose can improve the viscosity of an insulating layer system, and improve the dispersibility and the adhesiveness between the raw materials, so that a colloid insulating layer is formed, and the colloid insulating layer is stably bonded and connected with a heating circuit and a conducting plate. And the adopted terpineol can promote the dispersibility and the mixing degree of the raw materials of the insulating layer and improve the dispersion uniformity of the insulating material.

Preferably, the graphene-copper composite conductive sheet comprises the following raw materials in parts by weight: 15-20 parts of Mo Xi nano powder, 30-40 parts of nano metal powder, 50-60 parts of methyl vinyl silicone rubber, 0.5-1.5 parts of hydroxyl-terminated polydimethylsiloxane, 4-8 parts of vinyl trimethoxy silane, 3-8 parts of precipitated white carbon black, 5-10 parts of conductive carbon black, 0.5-1.0 parts of hydroxyl silicone oil and 0.5-1.0 part of vulcanizing agent.

In the embodiment of the invention, the raw materials are adopted as the conductive sheet, conductive metal is mixed and embedded into the silicon rubber matrix, the bonding strength of the conductive metal and the silicon rubber matrix is high, the compression resistance is strong, metal powder does not fall, and the prepared conductive sheet has high flexibility, high conductivity, high electron migration and flow rate, high strength and good impact resistance; the graphene nano powder and the nano metal powder adopted have small resistivity, so that the silicon rubber matrix has higher conductive performance, the conductive carbon black can improve the antistatic performance of the conductive sheet, the influence of static electricity on the current transmission and the like is avoided, meanwhile, the conductive carbon black, the graphene nano powder and the nano metal powder are used together, the inter-particle distance is reduced, the inter-particle contact probability is increased, the conductive performance of the silicon rubber is improved, the super-conductive carbon black adopted as the conductive carbon black of the antistatic silicon rubber has small particle size, the super-conductive carbon black is used together with the acetylene carbon black, the inter-particle distance is reduced, the inter-particle contact probability is increased, the conductive performance of the silicon rubber matrix is increased, and the conductive sheet has higher conductivity.

The adopted hydroxyl-terminated polydimethylsiloxane can avoid the structural phenomena of hardening, lower plasticity, reduced processability and the like of the silicon rubber matrix, improves the stability of the silicon rubber matrix, and enables the hydroxyl-terminated polydimethylsiloxane to react with Si-OH groups on the surface of the precipitated white carbon black to be hydrophobized, so that the dispersibility of graphene nano powder, nano metal powder and conductive carbon black in a silicon rubber system is improved, and the structuring of the silicon rubber is inhibited; by strictly controlling the dosage of the hydroxyl-terminated polydimethylsiloxane, the prepared conductive sheet has higher mechanical properties such as strength, impact resistance and the like, and if the dosage is excessive, the flexibility of the conductive sheet is reduced, the hardness is excessive, and the plasticity and the processing formability are lower; if the amount is too small, the dispersibility and adhesive bonding property of the conductive material are reduced, and the structuring phenomenon is liable to occur.

The vinyl trimethoxy silane can promote the cross-linking coupling reaction of the conductive sheet raw materials, and the surface of the prepared conductive sheet has no adhesion feel, so that the heating circuit slurry is easy to spread on the surface of the conductive sheet, the adhesive force is high, and the bonding between the two is stable; the adopted precipitated white carbon black can be used as a filler of a silicon rubber matrix, can improve the mechanical strength and the stability of the silicon rubber matrix, but if the traditional gas-phase white carbon black is adopted, the softness of the silicon rubber is reduced, the hardness of the silicon rubber is overlarge, and the flexibility and the processing formability of a conductive sheet are reduced; the adopted hydroxyl silicone oil can improve the dispersibility of powder (graphene nano powder, nano metal powder, precipitated white carbon black and conductive carbon black) in a silicon rubber matrix, inhibit the structuring of the silicon rubber matrix and improve the plasticity and the processing performance of the prepared conductive sheet; the adopted vulcanizing agent can promote the forming of the conductive sheet, and has high stability.

Preferably, the nano metal powder is a mixture composed of nano copper powder and nano nickel powder in a weight ratio of 5-6:1-2:2-3, and the nano copper powder is spherical silver coated copper powder with the surface coated by nano silver powder; the vinyl content of the methyl vinyl silicone rubber is 0.14-0.18%, and the molecular weight is 55-65 ten thousand; the hydroxyl content of the hydroxyl silicone oil is 4-8%; the vulcanizing agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.

In the embodiment of the invention, the nano copper powder and the nano nickel powder are adopted as the conductive metal powder, so that the resistivity is small, the conductivity is high, the granularity is fine, the three-dimensional bead chain structure of the nano nickel powder can enable the silicon rubber matrix to form a stable conductive network, the silicon rubber matrix has higher conductivity, the nano copper powder coats the surface of the silicon rubber matrix by adopting the nano silver powder, the volume resistivity of a silver layer coated on the surface is low, the volume resistivity of the whole particle of spherical silver coated copper is effectively reduced, and the conductivity of the conductive sheet is increased.

In the embodiment of the invention, the vinyl content and the molecular weight of the methyl vinyl silicone rubber are strictly controlled, and the characteristics of high molecular weight and main chain length are utilized, so that the intermolecular acting force is larger, and the prepared conductive sheet has better mechanical strength and processing formability; the hydroxyl content of the hydroxyl silicone oil is strictly controlled, so that the hydroxyl silicone oil has lower viscosity, the structuring phenomenon of a silicone rubber matrix can be inhibited, and the dispersibility of the powder in a system is improved by combining the activity of hydroxyl ends. By adopting 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide as a vulcanizing agent, the vulcanization crosslinking effect of the silicone rubber matrix can be improved, the vulcanization time is obviously shortened, and the mechanical strength and stability of the molded silicone rubber such as tensile strength, elongation at break, tear strength and the like are improved.

Preferably, the graphene-copper composite conductive sheet is prepared by the following steps of;

step A: stirring and banburying methyl vinyl silicone rubber according to parts by weight to obtain a material A;

And (B) step (B): adding one third of the amount of precipitated white carbon black into the material A prepared in the step A according to the weight parts, sequentially adding hydroxyl-terminated polydimethylsiloxane, vinyl trimethoxysilane and hydroxyl silicone oil, adding and mixing each raw material until the raw materials are uniformly dispersed, adding the rest of precipitated white carbon black twice, and uniformly mixing and stirring to prepare a material B;

Step C: adding graphene nano powder, nano metal powder and conductive carbon black into the material B prepared in the step B according to parts by weight, stirring and mixing the materials to form a mass, and preparing a material C;

Step D: and C, heating the material C obtained after the material C is mixed into a block, mixing the materials, discharging, carrying out open mill uniformly, adding a vulcanizing agent, stirring uniformly, feeding into a roller, and cutting to obtain the graphene-copper composite conductive sheet.

In the step A, the time of stirring and banburying is 5-15min; in the step D, the specific steps of heating and rubber mixing are as follows: heating the material C prepared by mixing and agglomerating in the step C to 90-100 ℃, vacuumizing to prepare a kneaded material, and carrying out a subsequent discharging procedure; the time of the vacuumizing treatment is 120-130min, and the vacuum degree is-0.06 MPa to-0.08 MPa.

According to the embodiment of the invention, the graphene-copper composite conductive sheet is prepared by adopting the steps, and the parameters of each step are strictly controlled, so that the operation control is convenient, the quality is stable, the production efficiency is high, the production cost is low, the prepared graphene-copper composite conductive sheet has lower resistivity and higher conductivity, the conductivity is good, and meanwhile, the graphene-copper composite conductive sheet has better mechanical properties such as tensile strength, elongation at break and tear strength, and the like, has high stability, and can be industrially produced on a large scale; the method comprises the steps of strictly controlling the adding sequence and processing parameters of other materials, adding precipitated silica in batches and equal amounts, improving the dispersibility of the precipitated silica in a silicone rubber matrix, improving the mechanical strength of the silicone rubber matrix, and then adding hydroxyl-terminated polydimethylsiloxane and a release agent, so that the silicone rubber is easy to generate structural phenomenon when the mechanical properties of the silicone rubber are improved, and inhibiting the structural phenomenon of the silicone rubber; meanwhile, vinyl trimethoxy silane and hydroxyl silicone oil are added into the silicone rubber matrix, so that cross-linking polymerization of materials and dispersibility of a mixed system are promoted, the dispersion uniformity of conductive metal powder added subsequently is improved, and the conductivity and the processing formability of the silicone rubber matrix are improved; finally, vulcanizing agents are added to promote the vulcanization and crosslinking of various materials of the silicone rubber, so that the mechanical strength and stability of the silicone rubber matrix are improved.

Preferably, the graphene heating slurry comprises the following raw materials in parts by weight: 20-40 parts of modified graphene oxide nano powder, 10-15 parts of nano copper powder, 30-50 parts of epoxy resin, 20-25 parts of epoxy acrylate, 1-3 parts of methylimidazole, 1-3 parts of silane coupling agent, 0.5-2.0 parts of curing agent and 50-60 parts of solvent.

According to the embodiment of the invention, the graphene heating slurry is prepared by adopting the raw materials, so that the prepared heating circuit has better electrical conductivity and thermal conductivity, is easy to coat on the surface of the conductive sheet, has good ductility, and can uniformly heat the heating body; the modified graphene oxide nano powder can act with the graphene nano powder of the conductive sheet, the electron migration rate is similar, the migration flow of electrons can be promoted, the migration flow of current between the conductive sheet and the heating circuit is smooth, the conductive bonding strength between the conductive sheet and the heating circuit is realized, the conductive performance is excellent, and the heating efficiency is high.

The epoxy resin and the epoxy acrylate are adopted as the main body of the slurry, so that the slurry has better adhesive force, ductility and fluidity, can be uniformly and stably attached to the conductive sheet, and the heating circuit has better electrical conductivity and thermal conductivity, generates heat uniformly and has high heating efficiency, wherein the adopted epoxy resin molecular structure contains one or more than two epoxy groups, can form a stable three-dimensional network structure system after being crosslinked with a curing agent, improves the stability of the prepared heating circuit, and meanwhile, the cured and crosslinked epoxy resin system contains polar groups such as epoxy groups, hydroxyl groups, ether bonds, amine bonds and ester bonds with higher activity, so that the cured and crosslinked graphene heating slurry has excellent adhesive force and is stably bonded with the conductive sheet with low shrinkage; the epoxy acrylate has high reactivity and high crosslinking density, is crosslinked with epoxy resin, can improve the conductivity and stability of the graphene heating paste, and is preferably phenolic epoxy acrylate.

The graphene oxide is used as a two-dimensional nano material, is difficult to disperse uniformly in epoxy resin, is easy to generate agglomeration, and reduces the expansion uniformity of graphene heating slurry, so that the dispersion uniformity of the graphene oxide in an epoxy resin-epoxy acrylate system can be improved by modifying and modifying the surface groups of the graphene oxide, and the conductivity and the heating efficiency of the graphene heating slurry are jointly improved by combining the adopted nano copper powder; the adopted methylimidazole can promote the fluidity and the extension uniformity of the graphene heating slurry, avoid sagging phenomenon in the printing process on the conductive sheet, coordinate the curing of epoxy resin and epoxy acrylic ester, make up the defect of curing and crosslinking of the epoxy resin and the epoxy acrylic ester, and improve the stability of the graphene heating slurry; the silane coupling agent can promote the cross-linking coupling between the epoxy resin and the epoxy acrylate and the cross-linking coupling between the epoxy resin-the epoxy acrylate and the curing agent, so that the stability of the graphene heating paste is improved; the solvent adopted improves the solubility of the raw materials and promotes the solubility of the modified graphene oxide nano powder and the nano copper powder in an epoxy resin-epoxy acrylate system.

Preferably, the modified graphene oxide nano powder is prepared by the following steps:

Step (1): dispersing graphene oxide nano powder in an alcohol solvent, and uniformly stirring and mixing to obtain graphene oxide dispersion liquid;

Step (2): dropwise adding 1-pyrene butyric acid into the graphene oxide dispersion liquid prepared in the step (1), stirring and dropwise adding, and obtaining a reaction liquid after the dropwise adding is finished;

Step (3): and (3) adding the hydration hydrazine into the reaction liquid prepared in the step (2), carrying out heat preservation and stirring for 20-30min in a nitrogen protection atmosphere, and finally carrying out vacuum suction filtration to obtain the modified graphene oxide nano powder.

Preferably, in the step (1), the mixing ratio of the graphene oxide nano powder and the alcohol solvent is 3-8:10, and the alcohol solvent is at least one of n-butanol, methanol, ethanol and isopropanol; in the step (2), the mixing ratio of the 1-pyrene butyric acid to the graphene oxide dispersion liquid is 2:3-4; in the step (3), the mixing ratio of the hydrazine hydrate and the reaction liquid is 1:2-5.

According to the embodiment of the invention, the modified graphene oxide nano powder is prepared through the steps, the material mixing proportion of each step is strictly controlled, the solubility of graphite oxide in an epoxy resin-epoxy acrylate system can be improved, and the modified graphene oxide nano powder has better conductivity; the graphene oxide nano powder is firstly dispersed in an alcohol solvent to promote dissolution of the graphene oxide nano powder, then non-covalent bond modification is carried out by utilizing pi-pi bond interaction of 1-pyrene butyric acid with a large pi conjugated system and graphene oxide, so that the dispersibility of the graphene oxide in a solution system is improved, the dispersion and dissolution of the graphene oxide in an epoxy resin-epoxy acrylate system are promoted, and hydration hydrazine is used for reduction, and the conductivity and toughness of the graphene oxide are improved through vacuum suction filtration, so that the further prepared graphene heating slurry has better flexibility, is easy to print on a conductive sheet, and improves the electron mobility and conductivity and heating efficiency.

Preferably, each part of the silane coupling agent comprises 2-3 parts of gamma-aminopropyl triethoxysilane, 2-3 parts of methyltriethoxysilane, 1-2 parts of pyrophosphite titanate and 4-5 parts of vinyltris (beta-methoxyethoxy) silane; the curing agent is at least one of triethanolamine, an adduct of 2-methylimidazole and epoxy butyl ether, diamino diphenyl sulfone, m-phenylenediamine and beta-hydroxyethyl ethylenediamine; the solvent is at least one of acetone, xylene and isopropanol.

According to the embodiment of the invention, the silane coupling agent can improve the wettability and dispersibility of materials in the graphene heating paste, promote the cross-linking coupling between epoxy resin and epoxy acrylate, between epoxy resin-epoxy acrylate and a curing agent and between epoxy resin-epoxy acrylate and conductive powder, and improve the stability of the graphene heating paste; the adopted gamma-aminopropyl triethoxysilane contains two different active groups, namely amino and ethoxy, so that the cross-linking coupling between epoxy resin-epoxy acrylate and conductive powder (modified graphene oxide nano powder and nano copper powder) can be effectively improved, the cohesiveness of the two can be enhanced, and the dispersion uniformity of the conductive powder can be improved; the vinyl tri (beta-methoxyethoxy) silane can effectively improve the cross-linking coupling between epoxy resin-epoxy acrylate and conductive powder (modified graphene oxide nano powder and nano copper powder).

The curing agent can be cured and crosslinked with epoxy resin and epoxy acrylate, so that the curing efficiency and the curing forming stability of the graphene heating slurry are improved, wherein the amine group in the triethanolamine can be crosslinked with the epoxy group in the system to form a stable three-dimensional network structure system, and the stability of the prepared heating circuit is improved; the 2-methylimidazole and epoxy butyl ether adduct is easy to combine with epoxy resin and epoxy acrylate, so that the strength and corrosion resistance of the graphene heating slurry can be improved while the system material is promoted to be cured, and the electrical property is excellent; the conductivity and the heat resistance of the graphene heating slurry can be improved by adopting diamino diphenyl sulfone and m-phenylenediamine, and the corrosion resistance is excellent; the adopted beta-hydroxyethyl ethylenediamine and epoxy groups have quicker crosslinking and curing reaction, and the curing efficiency of the graphene heating slurry can be effectively improved.

Preferably, the graphene heating paste is prepared by the following steps:

step1: adding epoxy resin, epoxy acrylate, a silane coupling agent and a curing agent into a solvent according to parts by weight, mixing and stirring, adding modified graphene oxide nano powder into the mixture after uniform dispersion, and carrying out ultrasonic stirring for 2-5h under the condition of the frequency of 15000-18000HZ to prepare a mixture;

Step 2: according to the weight portions, adding the nanometer copper powder and methylimidazole into the mixture prepared in the step ①, mixing and stirring, and uniformly dispersing to prepare the graphene heating slurry.

According to the embodiment of the invention, the graphene heating paste is prepared through the steps, the cross-linking coupling degree of the epoxy resin and the epoxy acrylate is improved through the silane coupling agent, a stable resin paste system is promoted to be formed, the epoxy resin and the epoxy acrylate are cross-linked and cured through the curing agent, the cross-linking combination degree of the system is improved, the curing and forming of a heating circuit are promoted, then the modified graphene oxide nano powder is added into the resin system, the dispersion is good, the solubility is high, the modified graphene oxide nano powder is reacted with graphene components in a conductive sheet, the mobility and the flow smoothness of current electrons in the conductive sheet and the heating circuit are improved, the conductivity and the heating efficiency are improved, and finally the nano copper powder and the methylimidazole are added into the modified graphene heating paste to improve the dispersibility and the conductivity of materials, so that the prepared graphene heating paste has better fluidity and the extending uniformity, does not generate sagging phenomenon in the printing process of the conductive sheet, the curing and the cross-linking defects of the epoxy resin and the epoxy acrylate are coordinated, and the stability of the graphene heating paste is improved.

The embodiment of the invention also provides a preparation method of the graphene heating component 20, which comprises the following steps:

Step ①: printing graphene heating slurry on the outer surface of a conducting plate, and curing to obtain a heating circuit layer;

Step ②: a packaging insulating layer is taken to cover the outer surface of the heating circuit layer, and a composite layer is prepared;

Step ③: and (3) taking a substrate layer, respectively carrying out corona treatment on two sides of the substrate layer, respectively coating adhesives on two sides of the substrate layer to respectively prepare a first adhesive layer and a second adhesive layer, simultaneously bonding and connecting the inner surface of the composite layer with the outer surface of the second adhesive layer, bonding and connecting the outer surface of the component body with the inner surface of the first adhesive layer, and carrying out hot press and solidification to obtain the graphene heating component 20.

Preferably, in the step ①, the curing temperature of the graphene heating paste is 110-120 ℃ and the curing time is 15-25s; in the step ③, the temperature of the hot press is 130-150 ℃, the press-fit pressure is 2-4KPa, and the press-fit time is 6-12s.

According to the embodiment of the invention, the graphene heating component 20 is prepared through the steps, the parameters of each step are strictly controlled, the operation is simple, the control is convenient, the production cost is reduced, the product quality is high, the prepared graphene heating component 20 is uniform in heating, the heating efficiency is high, the mechanical properties such as higher strength and impact strength are achieved, the bonding strength of the first adhesive layer and the second adhesive layer respectively with the substrate layer can be effectively improved through corona treatment on the substrate layer, the interlayer bonding stability of the graphene heating composite material is improved, the interlayer separation phenomenon is avoided, and the graphene heating composite material and the component body are stably bonded through a hot pressing mode, so that the graphene heating component 20 is stable in performance, the heating composite material is not easy to fall off, and the quality is stable, and can be used for large-scale production.

The preparation method of the graphene heating component 20 is simple to operate and convenient to control, reduces production cost, is high in product quality, enables the prepared graphene heating component 20 to generate heat uniformly, is high in heating efficiency, has high strength, high impact strength and other mechanical properties, can effectively improve the bonding strength of the first adhesive layer and the second adhesive layer respectively with the substrate layer by carrying out corona treatment on the substrate layer, improves interlayer bonding stability of the graphene heating composite material, avoids interlayer detachment and other phenomena, and enables the graphene heating composite material to be bonded with the component body stably in a hot press mode, so that the graphene heating component 20 is stable in performance, is not easy to fall off, is stable in quality and can be used for mass production.

The present invention will be further described with reference to specific examples and figures 7 to 8, which are not intended to be limiting, for the purpose of facilitating understanding of those skilled in the art.

Example 1

The graphene heating component 20 comprises a component body 1 and a graphene heating composite material 2 arranged on the outer surface of the component body 1, wherein the graphene heating composite material 2 comprises a first adhesive layer 21, a base material layer 22, a second adhesive layer 23, a conductive sheet 24, a heating circuit layer 25 and a packaging insulating layer 26 which are sequentially arranged from inside to outside, and the inner surface of the first adhesive layer 21 is in adhesive connection with the outer surface of the component body 1; the conductive sheet 24 is a graphene-copper composite conductive sheet, and the heating circuit layer 25 is prepared by printing graphene heating paste. The substrate layer 22 is a PVC film with an outer surface and an inner surface subjected to corona treatment; the first adhesive layer 21 and the second adhesive layer 23 are polyolefin hot melt adhesive layers; the encapsulation insulating layer 26 includes 40 parts glass frit, 15 parts silica, 3 parts hydroxyethyl cellulose, and 60 parts terpineol. The graphene-copper composite conductive sheet comprises the following raw materials in parts by weight: 15 parts of graphene nano powder, 30 parts of nano metal powder, 50 parts of methyl vinyl silicone rubber, 0.5 part of hydroxyl-terminated polydimethylsiloxane, 4 parts of vinyl trimethoxy silane, 3 parts of precipitated white carbon black, 5 parts of conductive carbon black, 0.5 part of hydroxyl silicone oil and 0.5 part of vulcanizing agent. The nanometer metal powder is a mixture composed of nanometer copper powder and nanometer nickel powder in a weight ratio of 5:1-2:2, and the nanometer copper powder is spherical silver coated copper powder with the surface coated by nanometer silver powder; the vinyl content of the methyl vinyl silicone rubber is 0.14%, and the molecular weight is 55 ten thousand; the hydroxyl content of the hydroxyl silicone oil is 4%; the vulcanizing agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.

Example 2

The graphene heating component 20 comprises a component body 1 and a graphene heating composite material 2 arranged on the outer surface of the component body 1, wherein the graphene heating composite material 2 comprises a first adhesive layer 21, a base material layer 22, a second adhesive layer 23, a conductive sheet 24, a heating circuit layer 25 and a packaging insulating layer 26 which are sequentially arranged from inside to outside, and the inner surface of the first adhesive layer 21 is in adhesive connection with the outer surface of the component body 1; the conductive sheet 24 is a graphene-copper composite conductive sheet, and the heating circuit layer 25 is prepared by printing graphene heating paste. The substrate layer 22 is a PE film with an outer surface and an inner surface subjected to corona treatment; the first adhesive layer 21 and the second adhesive layer 23 are polyamide hot melt adhesive layers; the encapsulation insulating layer 26 includes 45 parts glass frit, 18 parts silica, 4 parts hydroxyethyl cellulose, and 65 parts terpineol. The graphene-copper composite conductive sheet comprises the following raw materials in parts by weight: 16 parts of graphene nano powder, 32 parts of nano metal powder, 52 parts of methyl vinyl silicone rubber, 0.8 part of hydroxyl-terminated polydimethylsiloxane, 5 parts of vinyl trimethoxy silane, 4 parts of precipitated white carbon black, 6 parts of conductive carbon black, 0.6 part of hydroxyl silicone oil and 0.6 part of vulcanizing agent. The nanometer metal powder is a mixture composed of nanometer copper powder and nanometer nickel powder in a weight ratio of 5.2:1-2:2.2, and the nanometer copper powder is spherical silver coated copper powder with the surface coated by nanometer silver powder; the vinyl content of the methyl vinyl silicone rubber is 0.15%, and the molecular weight is 58 ten thousand; the hydroxyl content of the hydroxyl silicone oil is 5%; the vulcanizing agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.

Example 3

The graphene heating component 20 comprises a component body 1 and a graphene heating composite material 2 arranged on the outer surface of the component body 1, wherein the graphene heating composite material 2 comprises a first adhesive layer 21, a base material layer 22, a second adhesive layer 23, a conductive sheet 24, a heating circuit layer 25 and a packaging insulating layer 26 which are sequentially arranged from inside to outside, and the inner surface of the first adhesive layer 21 is in adhesive connection with the outer surface of the component body 1; the conductive sheet 24 is a graphene-copper composite conductive sheet, and the heating circuit layer 25 is prepared by printing graphene heating paste. The substrate layer 22 is a PET film or a PP film with the outer surface and the inner surface subjected to corona treatment; the first adhesive layer 21 and the second adhesive layer 23 are both polyurethane adhesive layers; the encapsulation insulating layer 26 includes 50 parts glass frit, 20 parts silica, 5 parts hydroxyethyl cellulose, and 70 parts terpineol. The graphene-copper composite conductive sheet comprises the following raw materials in parts by weight: 18 parts of graphene nano powder, 35 parts of nano metal powder, 55 parts of methyl vinyl silicone rubber, 1.0 part of hydroxyl-terminated polydimethylsiloxane, 6 parts of vinyl trimethoxy silane, 5 parts of precipitated white carbon black, 8 parts of conductive carbon black, 0.8 part of hydroxyl silicone oil and 0.8 part of vulcanizing agent. The nanometer metal powder is a mixture composed of nanometer copper powder and nanometer nickel powder in a weight ratio of 5.5:1-2:2.5, and the nanometer copper powder is spherical silver coated copper powder with the surface coated by nanometer silver powder; the vinyl content of the methyl vinyl silicone rubber is 0.16%, and the molecular weight is 60 ten thousand; the hydroxyl content of the hydroxyl silicone oil is 6%; the vulcanizing agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.

Example 4

The graphene heating component 20 comprises a component body 1 and a graphene heating composite material 2 arranged on the outer surface of the component body 1, wherein the graphene heating composite material 2 comprises a first adhesive layer 21, a base material layer 22, a second adhesive layer 23, a conductive sheet 24, a heating circuit layer 25 and a packaging insulating layer 26 which are sequentially arranged from inside to outside, and the inner surface of the first adhesive layer 21 is in adhesive connection with the outer surface of the component body 1; the conductive sheet 24 is a graphene-copper composite conductive sheet, and the heating circuit layer 25 is prepared by printing graphene heating paste. The substrate layer 22 is a PC film with an outer surface and an inner surface subjected to corona treatment; the first adhesive layer 21 and the second adhesive layer 23 are both organic silica gel adhesive layers or epoxy resin adhesive layers; the encapsulation insulating layer 26 includes 55 parts glass frit, 23 parts silica, 6 parts hydroxyethyl cellulose, and 75 parts terpineol. The graphene-copper composite conductive sheet comprises the following raw materials in parts by weight: 19 parts of graphene nano powder, 38 parts of nano metal powder, 58 parts of methyl vinyl silicone rubber, 1.3 parts of hydroxyl-terminated polydimethylsiloxane, 7 parts of vinyl trimethoxy silane, 7 parts of precipitated white carbon black, 9 parts of conductive carbon black, 0.9 part of hydroxyl silicone oil and 0.9 part of vulcanizing agent. The nanometer metal powder is a mixture composed of nanometer copper powder and nanometer nickel powder in a weight ratio of 5.8:1-2:2.8, and the nanometer copper powder is spherical silver coated copper powder with the surface coated by nanometer silver powder; the vinyl content of the methyl vinyl silicone rubber is 0.17%, and the molecular weight is 63 ten thousand; the hydroxyl content of the hydroxyl silicone oil is 7%; the vulcanizing agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.

Example 5

The graphene heating component 20 comprises a component body 1 and a graphene heating composite material 2 arranged on the outer surface of the component body 1, wherein the graphene heating composite material 2 comprises a first adhesive layer 21, a base material layer 22, a second adhesive layer 23, a conductive sheet 24, a heating circuit layer 25 and a packaging insulating layer 26 which are sequentially arranged from inside to outside, and the inner surface of the first adhesive layer 21 is in adhesive connection with the outer surface of the component body 1; the conductive sheet 24 is a graphene-copper composite conductive sheet, and the heating circuit layer 25 is prepared by printing graphene heating paste. The substrate layer 22 is a PEN film with corona treated outer and inner surfaces; the first adhesive layer 21 and the second adhesive layer 23 are both EVA hot melt adhesive layers; the encapsulation insulating layer 26 includes 60 parts glass frit, 25 parts silica, 8 parts hydroxyethylcellulose, and 80 parts terpineol. The graphene-copper composite conductive sheet comprises the following raw materials in parts by weight: 20 parts of graphene nano powder, 40 parts of nano metal powder, 60 parts of methyl vinyl silicone rubber, 1.5 parts of hydroxyl-terminated polydimethylsiloxane, 8 parts of vinyl trimethoxy silane, 8 parts of precipitated white carbon black, 10 parts of conductive carbon black, 1.0 part of hydroxyl silicone oil and 1.0 part of vulcanizing agent. The nanometer metal powder is a mixture composed of nanometer copper powder and nanometer nickel powder in a weight ratio of 6:1-2:3, and the nanometer copper powder is spherical silver coated copper powder with the surface coated by nanometer silver powder; the vinyl content of the methyl vinyl silicone rubber is 0.18%, and the molecular weight is 65 ten thousand; the hydroxyl content of the hydroxyl silicone oil is 8%; the vulcanizing agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.

Comparative example 1: this comparative example differs from example 3 above in that: the conductive sheet comprises the following raw materials in parts by weight: 35 parts of nano metal powder, 55 parts of methyl vinyl silicone rubber, 1.0 part of hydroxyl-terminated polydimethylsiloxane, 6 parts of vinyl trimethoxy silane, 5 parts of precipitated white carbon black, 8 parts of conductive carbon black, 0.8 part of hydroxyl silicone oil and 0.8 part of vulcanizing agent. Comparative example 2: this comparative example differs from example 3 above in that: the graphene-copper composite conductive sheet comprises the following raw materials in parts by weight: 18 parts of graphene nano powder, 35 parts of nano metal powder, 55 parts of methyl vinyl silicone rubber, 1.0 part of hydroxyl-terminated polydimethylsiloxane, 6 parts of vinyl trimethoxy silane, 5 parts of precipitated white carbon black, 8 parts of conductive carbon black, 0.8 part of hydroxyl silicone oil and 0.8 part of vulcanizing agent. The nanometer metal powder is a mixture composed of nanometer copper powder and nanometer nickel powder in a weight ratio of 5.5:1-2:2.5, and the surface of the nanometer copper powder is not coated by nanometer silver powder. Comparative example 3: this comparative example differs from example 3 above in that: the graphene heating slurry comprises the following raw materials in parts by weight: 30 parts of graphene oxide nano powder, 13 parts of nano copper powder, 40 parts of epoxy resin, 23 parts of epoxy acrylate, 2 parts of methylimidazole, 2 parts of a silane coupling agent, 1.3 parts of a curing agent and 55 parts of a solvent.

The graphene heating composite materials prepared in examples 1-5 and comparative examples 1-3 were subjected to performance tests such as electron mobility, conductivity, thermal conductivity and the like, and the test results are shown below:

From the above data, the electron mobility of the graphene heating composite material prepared by the invention is up to 18630-19200cm ²/(v.s), the resistivity is 7.2-8.3 (Ω.cm), the conductivity is up to 1.33 x 10 ⁶～1.46*10⁶ (s/m), and the heat conductivity coefficient is up to 5780W/(m.K), which indicates that the graphene component of the graphene heating composite material prepared by the invention promotes electrons to migrate and flow between the conductive sheet 24 and the heating circuit layer 25 by adopting the conductive sheet 24 containing graphene nano powder to interact with the heating circuit containing modified graphene oxide nano powder, thereby improving the conductivity and the heating efficiency.

Compared with the embodiment 3, the conductive sheet 24 of the comparative example 1 has no graphene nano powder, the electron mobility, the conductivity and the heat conductivity coefficient are all obviously reduced, the resistivity is increased, which means that the electron mobility efficiency between the conductive sheet 24 without the graphene nano powder component and the heating circuit layer 25 is obviously reduced, and the conductive sheet adopting the graphene nano powder can interact with the heating circuit containing the modified graphene oxide nano powder, and the graphene components of the two can promote electrons to migrate and flow between the conductive sheet 24 and the heating circuit layer 25, thereby improving the conductivity and the heating efficiency.

Compared with the embodiment 3, in the conductive sheet of the comparative example 2, the surface of the nano copper powder is not coated by the nano silver powder, the electron mobility, the electric conductivity and the heat conductivity coefficient are all reduced, and the electric resistivity is increased, which shows that the volume resistivity of the silver layer on the surface is low by coating the surface of the nano copper powder by adopting the nano silver powder, so that the volume resistivity of the surface of the nano copper powder can be effectively reduced, the electric conductivity of the conductive sheet is increased, and the electric conductivity and the heating efficiency are improved.

Compared with the embodiment 3, the graphene heating slurry of the comparative example 3 adopts graphene oxide, and does not adopt modified graphene oxide modified by pi-pi bonds, so that the prepared graphene oxide has obviously reduced electron mobility, conductivity and heat conductivity, and increased resistivity, which means that the graphene oxide which is not modified by pi-pi bonds has lower solubility in an epoxy system of the slurry, further reduces the performances such as conductivity and heat conductivity, and the like, and also means that the dispersion uniformity of the graphene heating slurry in an epoxy resin-epoxy acrylate system can be improved by adopting the modified graphene oxide nano powder as one of the slurry raw materials of the heating circuit layer, and the conductivity and the heating efficiency of the graphene heating slurry are jointly improved by combining the adopted nano copper powder.

In addition, the graphene-copper composite conductive sheets prepared in examples 1 to 5 were subjected to mechanical and physical property tests such as hardness, rebound resilience (softness), tensile strength, elongation at break, tear strength and the like, and the test results are shown below:

As can be seen from the data in the table, the graphene-copper composite conductive sheet prepared by the invention has good miscibility with conductive metal powder, better mechanical properties such as tensile strength, rebound resilience, elongation at break, tearing strength and the like, processability, easiness in processing and molding, and high stability.

In another embodiment of the present invention, the electrical interface 40 of the graphene hair growing device is a magnetic interface or a USB interface. Specifically, the electrical interface 40 is mainly connected to a power line and is connected to an external power source, a controller or a mobile terminal, so that the graphene heating component 20 can be powered on and controlled to heat the graphene heating component 20. Also, depending on the actual production requirements and model, a magnetic interface or a USB interface may be selected as the electrical interface 40 of the graphene generating device of the present embodiment.

In another embodiment of the present invention, as shown in fig. 3 and fig. 5 to 6, a fixing seat 50 is further provided in the housing 10 of the graphene hair growing device, and the circuit board 70 is clamped on the fixing seat 50. Specifically, the fixing seat 50 is provided to facilitate the installation and fixing of the circuit board 70, so that when the graphene hair growing device is used, even if the shell 10 is continuously shaken or the shell 10 is subjected to a certain external force, the circuit board 70 still does not need to be worried about loosening or falling off, and the stability and reliability of the connection between the circuit board 70 and the graphene heating component 20 are ensured.

In another embodiment of the present invention, as shown in fig. 3 and 5, a battery 60 is further disposed inside the housing 10 of the graphene hair growing device, and the battery 60 is electrically connected to the circuit board 70. Specifically, the arrangement of the battery 60 can directly supply power to the graphene heating component 20, so that the graphene hair growing device can work without connecting a power line with the electric interface 40, and the interference of the power line to a user can be reduced when the graphene hair growing device is used, and the use comfort is improved.

In another embodiment of the present invention, the battery 60 of the graphene hair growth device is provided as a dry battery 60. The dry battery 60 is used as the battery 60, so that the use is convenient, and the dry battery 60 can be quickly replaced to ensure the endurance of the graphene hair growing device.

In another embodiment of the present invention, the battery 60 of the graphene hair growing device is a rechargeable battery 60, and the rechargeable battery 60 can be charged after the power line is connected to the power connection port.

In another embodiment of the present invention, as shown in fig. 5 to 6, a battery cavity 51 is provided on the fixing base 50 of the graphene hair growing device, and the battery 60 is embedded in the battery cavity 51. In this embodiment, the battery 60 can be accommodated and fixed by the arrangement of the battery 60 cavity, so as to ensure the stability of the battery 60 after installation, and the stability of the output electric quantity of the battery 60 is ensured by keeping the stability of the position of the battery 60 after installation, so that the reliability and stability of the graphene hair growing device in use are improved. Specifically, the front side of the fixing base 50 is provided with two corresponding and spaced insertion grooves 53, and two sides of the circuit board 70 may be respectively inserted into the two insertion grooves 53. Meanwhile, the embedded groove 53 is of a strip structure, so that when the circuit board 70 is embedded in the embedded groove 53, the circuit board 70 is pushed to slide for a certain distance relative to the fixed seat 50, and the contact area between the embedded groove 53 and the circuit board 70 is increased, so that the circuit board 70 can be stably fixed.

In another embodiment of the present invention, as shown in fig. 3 and 5, the fixing seat 50 of the graphene hair growing device is provided at a front position inside the housing 10, and the front position inside the housing 10 refers to a front position facing a straight direction with the forehead position of the human head when the graphene hair growing device is worn on the human head. The battery 60 and the circuit board 70 can be guaranteed to be arranged at the front side, the electric interface 40 connected with the circuit board 70 can be arranged at the front side, and therefore a user can conveniently plug in the electric interface 40 through a handheld power line, and the electric interface has the advantage of convenience in use.

In another embodiment of the present invention, as shown in fig. 3 to 6, two elastic clamping columns 1221 are disposed in the housing 10 of the graphene hair growing device, and preferably, the two elastic clamping columns 1221 are disposed at front side positions inside the housing 10. Further, the two opposite sides of the fixing seat 50 are provided with protruding blocks 52, and the distance between the two protruding blocks 52 is close to the distance between the two elastic clamping columns 1221, so that when the fixing seat 50 is disposed between the two elastic clamping columns 1221, the two protruding blocks 52 are respectively clamped with the two elastic clamping columns 1221. In addition, the two elastic clamping columns 1221 have certain deformation elastic capability, so when the fixing seat 50 is installed, the two elastic clamping columns 1221 can be firstly bent to deform, the fixing seat 50 is arranged between the two elastic clamping columns 1221, after the force for bending the deformation of the two elastic clamping columns 1221 is removed, the elastic clamping columns 1221 are reset under the action of the elastic force of the elastic clamping columns 1221, and are respectively clamped with the two protruding blocks 52, so that the installation and the positioning of the fixing seat 50 are realized. When the fixing seat 50 needs to be disassembled, the two elastic clamping columns 1221 are also yielded, so that the two elastic clamping columns 1221 are separated from the clamping connection with the two convex blocks 52, and the fixing seat 50 can be taken out, thereby completing the disassembly of the fixing seat 50.

In another embodiment of the present invention, as shown in fig. 2, the housing 10 of the graphene hair growing device is provided with two ear avoidance positions 102, where the two ear avoidance positions 102 are respectively located at two side portions of the head cavity 101, and the two ear avoidance positions 102 are used for avoiding the ear avoidance positions 102 of the ears. Specifically, the shape of the ear avoidance bit 102 is arc-shaped, which can ensure that the bottom edge of the shell 10 does not press against the ears of the human body when the graphene hair growing device is worn on the head, and improves the comfort of using the graphene hair growing device.

In another embodiment of the present invention, as shown in fig. 2 and 5, the housing 10 of the graphene hair growing device provided includes a liner 12 and an upper cover 11, a head cavity 101 adapted to the shape of the head is disposed at the bottom of the liner 12, the liner 12 and the upper cover 11 are connected to form a housing 10 having a cavity therein, wherein the circuit board 70, the graphene heat generating component 20 and the battery 60 may be disposed in the cavity inside the housing 10. The connection between the inner container 12 and the upper cover 11 can be fixed connection or detachable connection. For example, bonding, ultrasonic welding, or fastener attachment.

In another embodiment of the present invention, the inner container 12 of the housing 10 of the graphene hair growing device may be made of soft plastic, so that the inner container 12 is in soft contact with the head of the human body, thereby improving the comfort of the head when the graphene hair growing device is used.

In another embodiment of the present invention, as shown in fig. 3 and 5, the inner container 12 of the housing 10 of the graphene hair-growing device provided includes a main body of the inner container 12 and an annular blocking rim 122 disposed at the bottom circumference of the main body of the inner container 12, and the upper cover 11 is in fit contact with the outer circumference of the annular blocking rim 122, so that the inner container 12 and the upper cover 11 are connected to form a housing 10 having a chamber inside. Further, the elastic clip 1221 is provided at a position where the annular flange 122 is located on the front side. Further, the bottom of the annular rim 122 is provided with a clearance hole 1222, and the clearance hole 1222 is provided for receiving and exposing the button 71 so that a user can operate to push the button 71. In addition, the ear relief 102 is disposed at two bottom positions corresponding to the annular rim 122.

According to the graphene hair growing device provided by the other embodiment of the invention, as shown in fig. 1-5, the graphene hair growing device comprises a shell 10, a circuit board 70, a battery 60 and a graphene heating component 20, wherein the shell 10 is provided with a head cavity 101 matched with the shape of a head, the graphene heating component 20, the battery 60 and the circuit board 70 are all arranged in the shell 10, the graphene heating component 20 is electrically connected with the circuit board 70, and the battery 60 is electrically connected with the circuit board 70. When the graphene hair growing device provided by the embodiment of the invention is specifically used, the shell 10 is worn on the head of a human body, wherein the head cavity 101 arranged on the shell 10 is matched with the head of the wearer, the battery 60 supplies power to the graphene heating component 20, the graphene heating component 20 can realize rapid heating, far infrared rays generated by the graphene heating component 20 can generate a warm effect and a resonance effect on the head of the human body, so that high-frequency vibration is generated at the scalp position of the head, oxidized free radicals can be removed from the dermis layer to the epidermis layer deeply, the blood circulation of scalp microvascular is promoted, the occurrence of alopecia is reduced, and better hair growth is assisted. In the embodiment, the graphene hair growing device does not need to be used, so that the interference of the power line to a user can be reduced when the graphene hair growing device is used, and the use comfort is improved.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. Graphene hair growing device is characterized in that: the graphene heating device comprises a shell, a circuit board and a graphene heating component, wherein the shell is provided with a head cavity matched with the shape of the head, the graphene heating component and the circuit board are both arranged in the shell, the graphene heating component is electrically connected with the circuit board, and the side part of the shell is provided with an electrical interface electrically connected with the circuit board;

the graphene heating component comprises a component body and a graphene heating composite material arranged on the outer surface of the component body, wherein the graphene heating composite material comprises a first adhesive layer, a base material layer, a second adhesive layer, a conducting strip, a heating circuit layer and a packaging insulating layer which are sequentially arranged from inside to outside, and the inner surface of the first adhesive layer is in adhesive connection with the outer surface of the component body; the conductive sheet is a graphene-copper composite conductive sheet, the heating circuit layer is prepared by printing graphene heating slurry, and the heating circuit layer is electrically connected with the electrical interface;

the graphene-copper composite conductive sheet comprises the following raw materials in parts by weight:

15-20 parts of graphene nano powder

30-40 Parts of nano metal powder

50-60 Parts of methyl vinyl silicone rubber

0.5-1.5 Parts of hydroxyl-terminated polydimethylsiloxane

Vinyl trimethoxy silane 4-8 parts

3-8 Parts of precipitated white carbon black

Conductive carbon black 5-10 parts

0.5 To 1.0 part of hydroxyl silicone oil

0.5-1.0 Parts of vulcanizing agent.

2. The graphene hair-growing device of claim 1, wherein: the substrate layer is one of a PET film, a PVC film, a PE film, a PC film, a PEN film and a PP film, wherein the outer surface and the inner surface of the PET film are subjected to corona treatment; the first adhesive layer and the second adhesive layer can be one of an organic silica gel adhesive layer, an epoxy resin adhesive layer, a polyurethane adhesive layer, a polyamide hot melt adhesive layer, a polyolefin hot melt adhesive layer and an EVA hot melt adhesive layer; the packaging insulating layer comprises 40-60 parts of glass powder, 15-25 parts of silicon dioxide, 3-8 parts of hydroxyethyl cellulose and 60-80 parts of terpineol.

3. The graphene hair-growing device of claim 1, wherein: the nanometer metal powder is a mixture composed of nanometer copper powder and nanometer nickel powder in a weight ratio of 5-6:1-2:2-3, and the nanometer copper powder is spherical silver coated copper powder with the surface coated by nanometer silver powder; the vinyl content of the methyl vinyl silicone rubber is 0.14-0.18%, and the molecular weight is 55-65 ten thousand; the hydroxyl content of the hydroxyl silicone oil is 4-8%; the vulcanizing agent is 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.

4. The graphene hair-growing device of claim 1, wherein: the graphene-copper composite conductive sheet is prepared by the following steps of;

5. The graphene hair-growing device of claim 1, wherein: the graphene heating slurry comprises the following raw materials in parts by weight:

20-40 parts of modified graphene oxide nano powder

10-15 Parts of nanometer copper powder

30-50 Parts of epoxy resin

20-25 Parts of epoxy acrylate

1-3 Parts of methylimidazole

1-3 Parts of silane coupling agent

0.5-2.0 Parts of curing agent

50-60 Parts of a solvent;

the modified graphene oxide nano powder is prepared by the following steps:

6. The graphene hair-growing device of claim 5, wherein: in the step (1), the mixing ratio of the graphene oxide nano powder and the alcohol solvent is 3-8:10, and the alcohol solvent is at least one of n-butanol, methanol, ethanol and isopropanol; in the step (2), the mixing ratio of the 1-pyrene butyric acid to the graphene oxide dispersion liquid is 2:3-4; in the step (3), the mixing ratio of the hydrazine hydrate and the reaction liquid is 1:2-5.

7. The graphene hair-growing device of claim 5, wherein: each part of the silane coupling agent comprises 2-3 parts of gamma-aminopropyl triethoxysilane, 2-3 parts of methyl triethoxysilane, 1-2 parts of pyrophosphite titanate and 4-5 parts of vinyl tri (beta-methoxyethoxy) silane; the curing agent is at least one of triethanolamine, an adduct of 2-methylimidazole and epoxy butyl ether, diamino diphenyl sulfone, m-phenylenediamine and beta-hydroxyethyl ethylenediamine; the solvent is at least one of acetone, xylene and isopropanol.