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CN117127419B - Cooling sun-proof fabric and preparation method thereof - Google Patents

Cooling sun-proof fabric and preparation method thereof Download PDF

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Publication number
CN117127419B
CN117127419B CN202311395688.3A CN202311395688A CN117127419B CN 117127419 B CN117127419 B CN 117127419B CN 202311395688 A CN202311395688 A CN 202311395688A CN 117127419 B CN117127419 B CN 117127419B
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nano
micro
hydrophilic
sun
diatomite
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CN117127419A (en
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沈红霞
付员峰
晋超
汪明星
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Wujiang Hanta Textile Finishing Co ltd
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Wujiang Hanta Textile Finishing Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D06N3/005—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by blowing or swelling agent
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
    • D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/14—Properties of the materials having chemical properties
    • D06N2209/141—Hydrophilic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/1678—Resistive to light or to UV

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention relates to a cooling sun-proof fabric and a preparation method thereof, wherein the cooling sun-proof fabric comprises a hydrophilic cloth layer and a micro-nano sponge pore membrane layer which are mutually adhered; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other; the micro-nano sponge porous membrane layer contains nano hybridized coated diatomite and a hydrophilic modifier, wherein the nano hybridized coated diatomite accounts for 15-25wt% and the hydrophilic modifier accounts for 1-5wt%; firstly, preparing micro-nano foaming glue by using nano hybridized coated diatomite and a hydrophilic modifier, and then coating the micro-nano foaming glue on hydrophilic cloth to prepare the cooling sun-proof fabric. According to the preparation method, sweat on the surface of a human body is quickly transferred to the outer layer film surface of the fabric through sunlight reflection and strong capillary effect to form a quick evaporation heat absorption effect, sweat on the hydrophilic cloth layer is quickly absorbed, and the effects of sun protection and somatosensory cooling are achieved; the product of the invention has excellent sunlight shielding and reflecting effects, has ventilation function and is comfortable to wear.

Description

Cooling sun-proof fabric and preparation method thereof
Technical Field
The invention belongs to the technical field of fabric after-finishing, and relates to a cooling sun-proof fabric and a preparation method thereof.
Background
Sun protection is one of the important ways to help us prevent irreversible aging, and the skin, with or without sun protection measures, can be exposed to ultraviolet light for a long time: firstly, skin can heat firstly, the temperature rises along with the rise, the phenomenon of redness appears, if the temperature is not reduced in time for the skin, red scars can be left, the inside of the skin is damaged when the red scars appear, pores can be increased along with the rise of the temperature of the skin, the skin gradually loses elasticity, and irreversible damage is formed, and the skin is easy to go on aging.
The existing sun-proof cooling products have low ultraviolet-proof efficacy, poor isolation and reflection efficacy on sunlight energy, so that the sun-proof efficacy is not ideal, and the sun-proof cooling products can not be cooled rapidly and efficiently, thus people are stuffy; when the sun-proof product is a garment fabric, the sun-proof product can not quickly and efficiently cool, so that the skin of a person can sweat and the person is uncomfortable to wear.
In order to solve the problems, the prior art generally uses fiber materials with high heat conductivity coefficient to prepare fabrics, in order to improve the heat conduction effect, nanometer powder of minerals such as jade or mica is added into the fibers, and the cool feeling function of the fibers is enhanced by utilizing the characteristics of good heat conduction performance and slow heat absorption of the minerals.
Patent CN116657414a discloses that microcapsule diatomite with a nano hybrid coating on the surface is added into polyurethane emulsion to obtain sun-proof refrigeration polyurethane emulsion, and then sun-proof refrigeration polyurethane emulsion is adopted to carry out surface coating finishing on textile fabric so as to increase sun-proof cooling function of the fabric, however, the patent only solves the problem of reducing sunlight irradiation, and still needs to be further improved, in addition, the environmental temperature in summer is very high, perspiration, ventilation and cooling of a human body must be fast and effectively carried out to give cool and comfortable experience.
In addition, there are other technical means, such as weaving into a smooth fabric, and increasing the heat dissipation rate by increasing the contact area between the fabric and the human body, however, this solution increases the heat dissipation area by increasing the area and also increases the heat absorption area, so that the cooling effect is not ideal.
Therefore, the cooling sun-proof fabric and the preparation method thereof are researched, so that people feel comfortable and no longer stuffy, and skin is not sunburned any more, and the cooling sun-proof fabric has very important significance.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a cooling sun-proof fabric and a preparation method thereof;
in order to achieve the above purpose, the invention adopts the following scheme:
a cooling sun-proof fabric comprises a hydrophilic cloth layer and a micro-nano sponge pore membrane layer which are adhered to each other; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other;
the micro-nano sponge porous membrane layer contains nano hybridized coated diatomite and a hydrophilic modifier, wherein the nano hybridized coated diatomite accounts for 15-25wt% and the hydrophilic modifier accounts for 1-5wt%; the content of the nano hybridized coated diatomite is lower than 15wt percent, so that the cooling sun-proof effect is insufficient, and the content higher than 15wt percent can increase the hardness and reduce the strength of the micro-nano sponge pore membrane layer.
As a preferable technical scheme:
as described above, the cooling sun-proof fabric has UPF of more than 7000, UVA of less than 0.3, heat shielding rate of more than 30% (the test standard is GB/T41560-2022, determination of heat shielding performance of textile), and air permeability of 2-20 mm/s (the test standard is GB/T5453-1997, determination of air permeability of textile).
The cooling sun-proof fabric is characterized in that the hydrophilic cloth layer is a hydrophilic natural fiber fabric or a hydrophilic chemical fiber fabric; the gram weight of the hydrophilic cloth layer is 15-350 g/square meter, and the thickness of the micro-nano sponge pore membrane layer is 25-120 mu m.
According to the cooling sun-proof fabric, the aperture of the micro-nano holes in the micro-nano sponge hole film layer is 100 nm-20 mu m, and the porosity is 50-90%.
The nanometer hybridized coated diatomite is obtained by adding micron-sized diatomite into nanometer hybridized water solution, stirring, concentrating and drying gradually, and then superfine grinding; the nanometer hybrid material is a mixture of nanometer graphene, nanometer titanium dioxide, nanometer zinc oxide and nanometer aluminum oxide.
The invention also provides a preparation method of the cooling sun-screening fabric, which comprises the steps of firstly uniformly mixing polyurethane particles with butanone, DMC, nano hybridized coated diatomite, a hydrophilic modifier, a foaming material (OWEN AC low-temperature foaming agent of Shijia multi-hundred million chemical engineering Co., ltd.), and a bridging agent (TDI bridging curing agent of Fushan Chang Union technology Co., ltd.), adding butanone to adjust viscosity to 500 mPa.s (the viscosity is adjusted so as to ensure that the coating still has viscosity and permeability after primary curing), obtaining micro-nano foaming glue, coating the micro-nano foaming glue on a PET base film by using a gravure or a scraper, carrying out primary curing at 60 ℃ for 1-1.5 minutes (ensuring that the adhesive film is formed and can be well bonded and permeated with a hydrophilic cloth layer when being separated from the base film later), pressing the hydrophilic cloth on the coating by using a pressing roller, and finally curing at 150 ℃ for 0.5-1 minute, and separating the PET base film to obtain the cooling sun-screening fabric.
As a preferable technical scheme:
according to the preparation method of the cooling sun-proof fabric, the mass of polyurethane particles is taken as a reference, the addition amount of butanone is 26-29%, the addition amount of DMC is 30%, the addition amount of nano hybrid coated diatomite is 10-20%, the addition amount of hydrophilic modifier is 1-4%, the addition amount of foaming material is 5%, and the addition amount of bridging agent is 15%.
The invention also provides a preparation method of the cooling sun-proof fabric, which comprises the steps of firstly adding nano hybridized coated diatomite, a hydrophilic modifier, a foam stabilizer (silicone oil water foam stabilizer or non-silicone oil water foam stabilizer, such as Shenzhen Guangdong polyurethane soft foam stabilizer GSYPU-595) and a foam stabilizer (silicone oil, silicone polyether emulsion (MPS) water foam stabilizer, such as Shandong you chemical modified silicone polyether microemulsion FM-550) into a water polyurethane solution with the solid content of 50-60%, mixing uniformly, adding water to adjust the viscosity to 500-1000 mPa.s to obtain micro-nano foaming glue, then carrying out micro-nano foaming by a micro-nano foaming machine, coating the micro-nano foaming glue onto hydrophilic cloth by using a gravure or a scraper, and drying at the temperature of 125-160 ℃ to obtain the cooling sun-proof fabric.
As a preferable technical scheme:
according to the preparation method of the cooling sun-proof fabric, the mass of the aqueous polyurethane solution is taken as a reference, the addition amount of the nano hybrid coated diatomite is 10-20%, the addition amount of the hydrophilic modifier is 1-4%, the addition amount of the foam stabilizer is 0.5-2%, and the addition amount of the foam stabilizer is 0.5-2%.
The principle of the invention:
the reason that the human body temperature is affected in hot and high-temperature weather is that high-temperature sunlight irradiates and sweat cannot be quickly evaporated to form body surface cooling.
The invention utilizes the high-proportion nano hybridized coated diatomite and thicker coating to achieve the effect of high shielding sunlight energy and simultaneously adopts the micro-nano foaming technology to form high air permeability, thereby forming the effect of shielding sunlight, ventilation and cooling; in addition, the sweat absorption of the hydrophilic cloth layer and the strong capillary effect of the micro-nano sponge pore membrane layer absorb and transfer sweat (the capillary water absorption effect is extremely strong when the micro-nano sponge pores are hydrophilically modified and have strong hydrophilism, so that the accumulated micro-sweat of the fabric can be instantly absorbed and quickly transferred to the whole membrane surface), the sweat can be instantly transferred to the micro-nano sponge pore membrane layer through the hydrophilic cloth layer and uniformly distributed, the water content of the hydrophilic cloth layer can be quickly reduced so as not to adhere to the skin, and the sweat water vapor on the membrane surface is quickly volatilized through capillary pores due to the strong capillary effect in the micro-nano sponge pore membrane layer to form an evaporative refrigeration effect, so that the fabric layer has the small environmental effect of an air conditioner, the cooling effect is obvious, and the lasting cool feeling experience is provided for a user.
Advantageous effects
(1) According to the preparation method of the cooling sun-proof fabric, a large number of spongy communicated micro-nano sponge holes are formed in the micro-nano sponge hole film layer and on the surface of the micro-nano sponge hole film layer, so that extremely strong capillary effect can be formed, sweat on the surface of a human body can be quickly transferred to the outer film surface of the fabric through sunlight reflection and strong capillary effect to quickly evaporate and absorb the heat absorption effect, sweat on the hydrophilic cloth layer can be quickly absorbed, the space temperature regulation effect of cooling the small environment in the fabric is achieved, and the body feeling can be cooled by 5-15 ℃ and has the sun-proof effect.
(2) The cooling sun-proof fabric has excellent sun-proof and reflecting effects, UPF is more than 7000, UVA is less than 0.3, and ultraviolet light of more than 99.985% can be shielded at most;
(3) The cooling sun-proof fabric has ventilation function and meets wearing comfort.
Drawings
Fig. 1 is a schematic structural diagram of a cooling sun-proof fabric, wherein a is a micro-nano sponge pore membrane layer, C is a hydrophilic cloth layer, and B is a region where the hydrophilic cloth layer and the micro-nano sponge pore membrane layer are bonded to each other.
Detailed Description
The invention is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
The test method/standard related to the invention is as follows:
UPF: the ultraviolet protection factor UPF test standard test is carried out according to AATCC TM 183 fabric;
UVA: the test standard is ISO 24442-2011 cosmetic, sun protection test method, in vivo determination of long wave ultraviolet protection of opacifier;
porosity: the test standard is GB/T42697-2023 nonwoven fabric porosity test method;
heat shielding rate: the test standard is GB/T41560-2022 determination of heat-shielding performance of textiles;
air permeability: the test standard is GB/T5453-1997 determination of fabric breathability.
The invention adopts the following partial substances:
nano graphene: shanghai Qian field New Material technology Co., ltd., product number YT-Y-01-1 (20 nm black sphere);
nano titanium dioxide: darcy concentrated nanotechnology (everstate) limited, darcy concentrated 100nm anatase titanium dioxide powder;
nano zinc oxide: DXN-HQ20W darcy 50nm nano zinc oxide, available from darcy concentration nanotechnology (everstate);
nano aluminum oxide: packaging specification DCA-300N (300 nanometers) of Dongguan Dong ultra-New Material technology Co., ltd;
micron-sized diatomaceous earth: lingshu county, xuancheng mineral product processing plant, product number XC-GZHB2;
polyurethane particles: solvent-based (ketone) polyurethanes of the type 103 (Shanghai Pair Du Utility Co., ltd.;
hydrophilic modifier: the Dongguan pacific new material science and technology limited hydrophilic agent has a product number of TYL-168;
foaming material: OWEN AC low-temperature foaming agent of Shijizhuang multi-hundred million chemical technology limited company;
and (3) a bridging agent: TDI bridging curing agent of Buddha Chang Ling technology Co., ltd;
PET carrier film: PET release film of Guangzhou Baoyuan new material science and technology Co., ltd;
hydrophilic natural fiber fabric: jiangsu Su Sun textile technologies, inc., 60s all cotton;
hydrophilic treated chemical fiber fabric: jiangsu Sun textile technologies, inc., 60 days silk;
aqueous polyurethane solution with solid content of 50-60%;
soaking agent: shenzhen Guangsi far polyurethane soft foam homogenizing agent GSYPU G-595;
foam stabilizer: shandong you su chemical modified silicone polyether microemulsion FM-550.
Example 1
A preparation method of nano hybridized coated diatomite comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
(2) Dispersing the 4 kinds of nano hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 80KHz to obtain a homogeneous nano hybrid material aqueous solution with the concentration of 1%;
(3) Adding the micron-sized diatomite into the homogeneous nano-hybrid material aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 30 revolutions per minute, then drying at 120 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybrid coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 25:1.5; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 20wt%;
(4) The diatomite with the nano-hybrid coating on the surface is subjected to superfine grinding to obtain the nano-hybrid coating diatomite with the particle size of less than 3 mu m.
Example 2
A preparation method of nano hybridized coated diatomite comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
(2) Dispersing the 4 kinds of nano hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 100KHz to obtain a homogeneous nano hybrid material aqueous solution with the concentration of 1%;
(3) Adding the micron-sized diatomite into the homogeneous nano-hybrid material aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 50 revolutions per minute, then drying at a temperature of 150 ℃, and continuously stirring and concentrating to obtain the diatomite with the nano-hybrid coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 30:1.5; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 23wt%;
(4) The diatomite with the nano-hybrid coating on the surface is subjected to superfine grinding to obtain the nano-hybrid coating diatomite with the particle size of less than 3 mu m.
Example 3
A preparation method of nano hybridized coated diatomite comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
(2) Dispersing the 4 kinds of nano hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 80KHz to obtain a homogeneous nano hybrid material aqueous solution with the concentration of 1.5%;
(3) Adding the micron-sized diatomite into the homogeneous nano-hybrid material aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 100 revolutions per minute, then drying at 180 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybrid coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 30:1.5; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 24wt%;
(4) The diatomite with the nano-hybrid coating on the surface is subjected to superfine grinding to obtain the nano-hybrid coating diatomite with the particle size of less than 3 mu m.
Example 4
A preparation method of nano hybridized coated diatomite comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
(2) Dispersing the 4 kinds of nano hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 100KHz to obtain a homogeneous nano hybrid material aqueous solution with the concentration of 1.5%;
(3) Adding the micron-sized diatomite into the homogeneous nano-hybrid material aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 200 revolutions per minute, then drying at 200 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybrid coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 35:2; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 26.5wt%;
(4) The diatomite with the nano-hybrid coating on the surface is subjected to superfine grinding to obtain the nano-hybrid coating diatomite with the particle size of less than 3 mu m.
Example 5
A preparation method of nano hybridized coated diatomite comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
(2) Dispersing the 4 kinds of nano hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 25KHz to obtain a homogeneous nano hybrid material aqueous solution with the concentration of 2%;
(3) Adding the micron-sized diatomite into the homogeneous nano-hybrid material aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at the rotating speed of 250 revolutions per minute, then drying at the temperature of 230 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybrid coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 25:1.5; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 20wt%;
(4) The diatomite with the nano-hybrid coating on the surface is subjected to superfine grinding to obtain the nano-hybrid coating diatomite with the particle size of less than 3 mu m.
Example 6
A preparation method of nano hybridized coated diatomite comprises the following specific steps:
(1) Preparation of raw materials:
nano hybrid material: nano graphene, nano titanium dioxide, nano zinc oxide and nano aluminum oxide;
micron-sized diatomite with particle size of 1-3 mu m;
(2) Dispersing the 4 kinds of nano hybrid materials in water in equal parts, and carrying out ultrasonic oscillation at the frequency of 130KHz to obtain a homogeneous nano hybrid material aqueous solution with the concentration of 2%;
(3) Adding the micron-sized diatomite into the homogeneous nano-hybrid material aqueous solution prepared in the step (2) to obtain a mixed solution, stirring at a rotating speed of 300 revolutions per minute, then drying at the temperature of 250 ℃, and continuously stirring and concentrating in the drying process to obtain the diatomite with the nano-hybrid coating on the surface;
wherein, the mass ratio of the micro-scale diatomite to the nano hybrid material is 30:1.2; the total concentration of the nano hybrid material and the micro diatomite in the mixed solution is 24wt%;
(4) The diatomite with the nano-hybrid coating on the surface is subjected to superfine grinding to obtain the nano-hybrid coating diatomite with the particle size of less than 3 mu m.
Example 7
The preparation method of the cooling sun-proof fabric comprises the following specific steps:
(1) Uniformly mixing polyurethane particles with butanone, DMC, nano hybridized coated diatomite prepared in example 1, a hydrophilic modifier, a foaming material and a bridging agent, and then regulating the viscosity to 500 mPa.s to obtain micro-nano foaming glue;
based on the mass of polyurethane particles, the addition amount of butanone is 26%, the addition amount of DMC is 30%, the addition amount of nano hybridized coated diatomite is 10%, the addition amount of hydrophilic modifier is 4%, the addition amount of foaming material is 5%, and the addition amount of bridging agent is 15%;
(2) Coating micro-nano foaming glue on a PET (polyethylene terephthalate) base film by using a gravure, primarily curing at the temperature of 60 ℃ for 1 minute, pressing hydrophilic natural fiber fabric with the gram weight of 150 g/square meter on the coating by using a pressing roller, and finally separating the PET base film after completely curing at the temperature of 150 ℃ within 30 seconds to obtain the cooling sun-proof fabric.
As shown in fig. 1, the finally prepared cooling sun-proof fabric comprises a hydrophilic natural fiber fabric and a micro-nano sponge pore membrane layer which are adhered to each other; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other; the thickness of the micro-nano sponge pore membrane layer is 40 mu m; the aperture of the micro-nano holes in the micro-nano sponge porous membrane layer is 100 nm-10 mu m, and the porosity is 50%; the UPF of the cooling sun-proof fabric is 7500, the UVA is 0.2, the heat shielding rate is 35%, and the air permeability is 15mm/s.
Comparative example 1
A fabric substantially as in example 7 except that the same mass of diatomaceous earth was used in step (1) instead of the nano-hybrid coated diatomaceous earth.
The UPF of the prepared fabric is 50, the UVA is 5, the heat shielding rate is 10%, and the air permeability is 15mm/s.
Comparing comparative example 1 with example 7, it can be found that comparative example 1 has a much reduced solar blocking due to the lack of a nano-hybrid material that has high solar blocking and reflects light.
Comparative example 2
A fabric substantially as in example 7 except that in the step (1), the content of the nano-hybrid coated diatomaceous earth was 5% by weight and the content of the hydrophilic modifier was 1% by weight based on the mass of the polyurethane particles.
The UPF of the prepared fabric is 500, the UVA is 3, the heat shielding rate is 15%, and the air permeability is 15mm/s.
Comparing comparative example 2 with example 7, it can be found that the UPF of comparative example 2 is much reduced and UVA is much increased because the addition amount of nano-hybrid coated diatomaceous earth is reduced, directly affecting the reflection and blocking effects on sunlight.
Example 8
The preparation method of the cooling sun-proof fabric comprises the following specific steps:
(1) Uniformly mixing polyurethane particles with butanone, DMC, nano hybridized coated diatomite prepared in example 2, a hydrophilic modifier, a foaming material and a bridging agent, and then regulating the viscosity to 500 mPa.s to obtain micro-nano foaming glue;
based on the mass of polyurethane particles, the addition amount of butanone is 29%, the addition amount of DMC is 30%, the addition amount of nano hybridized coated diatomite is 20%, the addition amount of hydrophilic modifier is 1%, the addition amount of foaming material is 5%, and the addition amount of bridging agent is 15%;
(2) Coating micro-nano foaming glue on a PET (polyethylene terephthalate) base film by using a scraper, primarily curing at the temperature of 60 ℃ for 1 minute, pressing the hydrophilically treated chemical fiber fabric with the gram weight of 350 g/square meter on the coating by using a pressing roller, and finally separating the PET base film after completely curing at the temperature of 150 ℃ within 45 seconds to obtain the cooling sun-proof fabric.
The finally prepared cooling sun-proof fabric comprises hydrophilic treated chemical fiber fabric and a micro-nano sponge pore membrane layer which are adhered to each other; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other; the thickness of the micro-nano sponge pore membrane layer is 50 mu m; the aperture of the micro-nano holes in the micro-nano sponge porous membrane layer is 100 nm-20 mu m, and the porosity is 75%; the UPF of the cooling sun-proof fabric is 8900, the UVA is 0.1, the heat shielding rate is 40%, and the air permeability is 10mm/s.
Example 9
The preparation method of the cooling sun-proof fabric comprises the following specific steps:
(1) Uniformly mixing polyurethane particles with butanone, DMC, nano hybridized coated diatomite prepared in example 3, a hydrophilic modifier, a foaming material and a bridging agent, and then regulating the viscosity to 500 mPa.s to obtain micro-nano foaming glue;
based on the mass of polyurethane particles, the addition amount of butanone is 25%, the addition amount of DMC is 30%, the addition amount of nano hybridized coated diatomite is 15%, the addition amount of hydrophilic modifier is 2%, the addition amount of foaming material is 5%, and the addition amount of bridging agent is 15%;
(2) Coating micro-nano foaming glue on a PET (polyethylene terephthalate) base film by using a scraper, primarily curing at the temperature of 60 ℃ for 1 minute, pressing the hydrophilically treated chemical fiber fabric with the gram weight of 200 g/square meter on the coating by using a pressing roller, and finally separating the PET base film after completely curing at the temperature of 150 ℃ within 50 seconds to obtain the cooling sun-proof fabric.
The finally prepared cooling sun-proof fabric comprises hydrophilic treated chemical fiber fabric and a micro-nano sponge pore membrane layer which are adhered to each other; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other; the thickness of the micro-nano sponge pore membrane layer is 100 mu m; the aperture of the micro-nano holes in the micro-nano sponge porous membrane layer is 100 nm-15 mu m, and the porosity is 70%; the UPF of the cooling sun-proof fabric is 20000, the UVA is 0.05, the heat shielding rate is 65%, and the air permeability is 5mm/s.
Example 10
The preparation method of the cooling sun-proof fabric comprises the following specific steps:
(1) Adding the nano hybridized coated diatomite prepared in the example 4, a hydrophilic modifier, a foam homogenizing agent and a foam stabilizer into an aqueous polyurethane solution with the solid content of 55%, uniformly mixing, and adding water to adjust the viscosity to 500 mPa.s to obtain micro-nano foaming glue;
based on the mass of the aqueous polyurethane solution, the addition amount of the nano hybrid coated diatomite is 10%, the addition amount of the hydrophilic modifier is 1.5%, the addition amount of the foam homogenizing agent is 0.5%, and the addition amount of the foam stabilizer is 0.5%;
(2) Coating micro-nano foaming glue on hydrophilic natural fiber fabric with gram weight of 150 g/square meter by using a gravure after micro-nano foaming by using a micro-nano foaming machine, and drying at 145 ℃ to obtain the cooling sun-proof fabric.
The finally prepared cooling sun-proof fabric comprises hydrophilic natural fiber fabric and a micro-nano sponge pore membrane layer which are adhered to each other; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other; the thickness of the micro-nano sponge pore membrane layer is 50 mu m; the aperture of the micro-nano holes in the micro-nano sponge hole membrane layer is less than 5 mu m, and the porosity is 75%; the UPF of the cooling sun-proof fabric is 8000, the UVA is 0.25, the heat shielding rate is 31%, and the air permeability is 20mm/s.
Comparative example 4
A fabric is basically the same as in example 10, except that the same mass of diatomite is used to replace the nano-hybrid coated diatomite in step (1).
The UPF of the prepared fabric is 60, the UVA is 4, the heat shielding rate is 12%, and the air permeability is 20mm/s.
Comparing comparative example 4 with example 10, it can be found that comparative example 4 has a much reduced solar blocking due to the lack of a nano-hybrid material that has high solar blocking and reflects light.
Comparative example 5
A fabric substantially as in example 10, except that the content of the nano-hybrid coated diatomaceous earth in the step (1) was 6% by weight and the content of the hydrophilic modifier was 2% by weight based on the mass of the polyurethane particles.
The UPF of the prepared fabric is 600, the UVA is 2, the heat shielding rate is 15%, and the air permeability is 20mm/s.
Comparing comparative example 5 with example 10, it can be seen that the UPF of comparative example 5 is much reduced and UVA is much increased because the addition amount of nano-hybrid coated diatomaceous earth is reduced, directly affecting the reflection and blocking effect on sunlight.
Example 11
The preparation method of the cooling sun-proof fabric comprises the following specific steps:
(1) Adding the nano hybridized coated diatomite prepared in the example 5, a hydrophilic modifier, a foam homogenizing agent and a foam stabilizer into an aqueous polyurethane solution with the solid content of 55%, uniformly mixing, and adding water to adjust the viscosity to 800 mPa.s to obtain micro-nano foaming glue;
based on the mass of the aqueous polyurethane solution, the addition amount of the nano hybrid coating diatomite is 15%, the addition amount of the hydrophilic modifier is 2.5%, the addition amount of the foam homogenizing agent is 1%, and the addition amount of the foam stabilizer is 1.5%;
(2) Coating the micro-nano foaming glue on the hydrophilically treated chemical fiber fabric with the gram weight of 180 g/square meter by using a scraper after micro-nano foaming by using a micro-nano foaming machine, and drying at the temperature of 150 ℃ to obtain the cooling sun-proof fabric.
The finally prepared cooling sun-proof fabric comprises hydrophilic treated chemical fiber fabric and a micro-nano sponge pore membrane layer which are adhered to each other; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other; the thickness of the micro-nano sponge pore membrane layer is 80 mu m; the aperture of the micro-nano holes in the micro-nano sponge hole membrane layer is smaller than 10 mu m, and the porosity is 85%; the UPF of the cooling sun-proof fabric is 9000, the UVA is 0.15, the heat shielding rate is 35%, and the air permeability is 15mm/s.
Example 12
The preparation method of the cooling sun-proof fabric comprises the following specific steps:
(1) Adding the nano hybridized coated diatomite prepared in the example 6, a hydrophilic modifier, a foam homogenizing agent and a foam stabilizer into an aqueous polyurethane solution with the solid content of 55%, uniformly mixing, and adding water to adjust the viscosity to 900 mPa.s to obtain micro-nano foaming glue;
based on the mass of the aqueous polyurethane solution, the addition amount of the nano hybrid coated diatomite is 20%, the addition amount of the hydrophilic modifier is 3%, the addition amount of the foam stabilizer is 1.5%, and the addition amount of the foam stabilizer is 2%;
(2) Coating the micro-nano foaming glue on the hydrophilically treated chemical fiber fabric with the gram weight of 200 g/square meter by using a scraper after micro-nano foaming by using a micro-nano foaming machine, and drying at 160 ℃ to obtain the cooling sun-proof fabric.
The finally prepared cooling sun-proof fabric comprises hydrophilic treated chemical fiber fabric and a micro-nano sponge pore membrane layer which are adhered to each other; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other; the thickness of the micro-nano sponge pore membrane layer is 100 mu m; the aperture of the micro-nano holes in the micro-nano sponge hole membrane layer is smaller than 10 mu m, and the porosity is 80%; the UPF of the cooling sun-proof fabric is 12000, the UVA is 0.08, the heat shielding rate is 60%, and the air permeability is 10mm/s.

Claims (7)

1. The utility model provides a cooling sun-proof surface fabric which characterized in that: comprises a hydrophilic cloth layer and a micro-nano sponge pore membrane layer which are adhered to each other; the micro-nano holes in the micro-nano sponge hole film layer are communicated with each other;
the micro-nano sponge porous membrane layer contains nano hybridized coated diatomite and a hydrophilic modifier, wherein the nano hybridized coated diatomite accounts for 10-20wt% and the hydrophilic modifier accounts for 1-4wt%;
the nanometer hybridized coated diatomite is obtained by adding micron-sized diatomite into nanometer hybridized material aqueous solution, stirring, concentrating and drying step by step, and then superfine grinding; the nanometer hybrid material is a mixture of nanometer graphene, nanometer titanium dioxide, nanometer zinc oxide and nanometer aluminum oxide;
the UPF of the cooling sun-proof fabric is more than 7000, the UVA is less than 0.3, the heat shielding rate is more than 30%, and the air permeability is 2-20 mm/s.
2. The cooling sun-proof fabric according to claim 1, wherein the hydrophilic cloth layer is hydrophilic natural fiber fabric or hydrophilic chemical fiber fabric; the gram weight of the hydrophilic cloth layer is 15-350 g/square meter, and the thickness of the micro-nano sponge pore membrane layer is 25-120 mu m.
3. The cooling sun-proof fabric as claimed in claim 1, wherein the aperture of the micro-nano holes in the micro-nano sponge hole film layer is 100 nm-20 μm, and the porosity is 50-90%.
4. The method for preparing the cooling sun-screening fabric according to any one of claims 1-3, which is characterized by comprising the following steps: firstly, uniformly mixing polyurethane particles with butanone, DMC, nano hybridized coated diatomite, a hydrophilic modifier, a foaming material and a bridging agent, regulating the viscosity to 500 mPa.s to obtain micro-nano foaming glue, then coating the micro-nano foaming glue on a PET (polyethylene terephthalate) base film by using a gravure or a scraper, primarily curing at the temperature of 60 ℃ for 1-1.5 minutes, pressing hydrophilic cloth on the coating by using a pressing roller, and finally curing at the temperature of 150 ℃ for 0.5-1 minute, and separating the PET base film to obtain the cooling sun-proof fabric.
5. The preparation method of the cooling sun-screening fabric according to claim 4, wherein the mass of polyurethane particles is taken as a reference, the addition amount of butanone is 26-29%, the addition amount of DMC is 30%, the addition amount of foaming material is 5%, and the addition amount of bridging agent is 15%.
6. The method for preparing the cooling sun-screening fabric according to any one of claims 1-3, which is characterized by comprising the following steps: firstly adding nano hybridized coated diatomite, a hydrophilic modifier, a foam homogenizing agent and a foam stabilizer into a water-based polyurethane solution with the solid content of 50-60%, uniformly mixing, adding water to adjust the viscosity to 500-1000 mPa.s to obtain micro-nano foaming glue, then coating the micro-nano foaming glue on hydrophilic cloth by using a gravure or a scraper after micro-nano foaming by using a micro-nano foaming machine, and drying at the temperature of 125-160 ℃ to obtain the cooling sun-proof fabric.
7. The preparation method of the cooling sun-screening fabric according to claim 6, wherein the addition amount of the foam stabilizer is 0.5-2% and the addition amount of the foam stabilizer is 0.5-2% based on the mass of the aqueous polyurethane solution.
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