CN108745810A - A kind of production technology of nano antibacterial, moldproof metal coin - Google Patents
A kind of production technology of nano antibacterial, moldproof metal coin Download PDFInfo
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- CN108745810A CN108745810A CN201810623190.0A CN201810623190A CN108745810A CN 108745810 A CN108745810 A CN 108745810A CN 201810623190 A CN201810623190 A CN 201810623190A CN 108745810 A CN108745810 A CN 108745810A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Apparatus For Disinfection Or Sterilisation (AREA)
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Abstract
The present invention provides a kind of production technology of nano antibacterial, moldproof metal coin, carries out antibacterial and mouldproof processing for the whole surface to metal coin ontology, in turn includes the following steps：Allocate coating, cleaning, spraying adhering coating, spraying nano-antimicrobial fungus-resisting paint, solidification；Wherein, coating is allocated：Allocate mould proof, antibacterial nano-antimicrobial fungus-resisting paint；Cleaning：Automatic pollution removing spray process is carried out to the whole surface of metal coin；Spray adhering coating：Metal coin whole surface after cleaning is carried out to the spraying of adhering coating, forms adhesive layer；Spray nano-antimicrobial fungus-resisting paint：After completing adhering coating spraying at least 3 minutes, the spraying of nano-antimicrobial fungus-resisting paint is carried out to the whole surface of metal coin, forms nano antibacterial, moldproof layer；Solidification：The metal coin for coating nano antibacterial, moldproof coating is sent into hot setting area, in the environment of 150-300 degrees Celsius of temperature, is dried 30-50 minutes.
Description
Technical Field
The invention relates to the technical field of production processes, in particular to a production process of a nanometer antibacterial and mildewproof metal coin.
Background
The common metal coin is used as a market circulation and collection souvenir, the surface of the common metal coin has no functions of mildew resistance, rust resistance, antibiosis and bacteriostasis, and the common metal coin has the defects of yellow spots, mildew spots, rusting and the like after being used for a long time; and the common coins have no antibacterial function.
Particularly, the metal coins circulating in the market have enough attention on antibiosis and bacteriostasis, and the metal coins are generally circulated by manual and hand direct contact; however, in daily life, a person's hand is in direct and frequent contact with an object, and the skin of the hand contains various microorganisms such as bacteria and viruses, most of which are skin wrinkles and finger tips. Scientific experiments prove that the hands which are not washed have 80 million bacteria at most, and the nail dirt of one gram which is only very little can store 38 hundred million bacteria; furthermore, on average, 150 species of bacteria are present on each hand, and many species are beyond the expectations of researchers, and these bacteria include a large amount of Staphylococcus aureus in addition to Escherichia coli. Moreover, the bacteria have great possibility of spreading the bacteria to other people through circulating coins. For example: when people eat the meal in a restaurant, the people need to pay money and eat the meal, and if people contact circulating coins before eating, bacteria can easily enter the body through the mouth to cause disease transmission, the health of co-diners can be threatened while the people get the disease, and the health of the users is greatly harmed.
In view of the above, the present inventors have specially designed a production process of a nano antibacterial and mildewproof metal coin, and have produced the present invention.
Disclosure of Invention
The invention aims to provide a production process of a nano antibacterial and mildewproof metal coin, which is used for carrying out antibacterial and mildewproof treatment on the whole surface of a metal coin body so as to solve the defects that the existing metal coin is easy to have yellow spots, mildew spots, rust and the like, does not have any other antibacterial and bacteriostatic functions, and sequentially comprises the following steps: preparing a coating, cleaning, spraying an adhesion coating, spraying a nano antibacterial mildew-proof coating, and curing; wherein,
preparing a coating: preparing a mildew-proof and antibacterial nano antibacterial mildew-proof coating;
cleaning: carrying out automatic decontamination spraying treatment on the whole surface of the metal coin;
spraying an adhesion coating: spraying an adhesive coating on the whole surface of the cleaned metal coin to form an adhesive layer;
spraying nano antibacterial and mildewproof paint: after the spraying of the adhesive coating is finished for at least five minutes, the whole surface of the metal coin is sprayed with the nano antibacterial mildew-proof coating to form a nano antibacterial mildew-proof layer;
and (3) curing: and (3) conveying the metal coin sprayed with the nano antibacterial and mildew-proof coating into a high-temperature curing area, and drying for 30-50 minutes at the temperature of 150-300 ℃.
Further, the nano antibacterial and mildewproof coating comprises 80-110 parts by weight of acrylic resin, 60-100 parts by weight of polyvinyl acetate resin, 30-50 parts by weight of organic solvent, 1.5-2.5 parts by weight of inorganic nano antibacterial agent, 1.5-5.5 parts by weight of mildewproof additive and 35-80 parts by weight of curing agent.
Further, the preparation method of the nano antibacterial and mildewproof coating comprises the following steps: under the conventional environment and the stirring condition that the stirring speed is 350-400 r/min, uniformly mixing acrylic resin, polyvinyl acetate resin and an organic solvent in a reaction tank, adding a nano inorganic nano antibacterial agent and a mildew-proof additive into the reaction tank to uniformly mix and disperse all the components, and finally adding a curing agent into the reaction tank to uniformly mix to obtain the nano antibacterial mildew-proof coating.
Further, the cleaning, the spraying of the adhesive coating, the spraying of the nano antibacterial mildew-proof coating and the curing are all completed through a production line, and the spraying of the adhesive coating is performed by adopting a dust-free automatic spraying work cabinet.
Further, the cleaning adopts a flat plate type mechanical automatic spraying cleaning line to perform five-path treatment on the metal coins, and comprises the following specific steps:
a. spraying for removing dirt and rust;
b. spraying clear water for the first time;
c. bright passivation treatment;
d. spraying clear water for the second time;
e. drying treatment: and (3) automatically drying for 15-20 minutes at constant temperature under water vapor with the temperature of 130 ℃.
Further, the error range of the temperature of 130 ℃ in the drying treatment is controlled within 3 ℃ from top to bottom.
Furthermore, the nano antibacterial and mildew-proof coating is sprayed on the whole surface of the metal coin by adopting a 8000 rpm high-speed rotating cup and an automatic spray gun.
Further, the thickness of the attaching layer is controlled to be between 5 and 10 nm.
Furthermore, the nano antibacterial mildew-proof layer is controlled between 10nm and 15 nm.
The production process of the nano antibacterial mildew-proof metal coin has the following beneficial effects:
firstly, by adopting the production process of the nano antibacterial mildew-proof metal coin, the produced metal coins made of various materials not only avoid the defects of yellow spots, mildew spots, rusting and the like on the surface on the basis of keeping the original advantages of the coins, but also endow the coins with the antibacterial, bacteriostatic and mildew-proof performances;
secondly, by adopting the production process of the nano antibacterial mildew-proof metal coin, the produced metal coins made of various materials have the advantages and also have the functions of fingerprint resistance, oil stain resistance and easiness in cleaning;
thirdly, by adopting the production process of the nano antibacterial mildew-proof metal coin, the surface hardness of the produced metal coins of various materials is higher than that of the conventional coin, can reach 8-9H, is more wear-resistant and corrosion-resistant, is not deformed and faded after long-term use, and can be collected and have the service life more than 1.5 times longer than that of the common metal coin after test and identification;
fourthly, by adopting the production process of the nano antibacterial mildew-proof metal coin, the metal coins made of various materials have low production cost, high quality efficiency, vividness and uniqueness and very wide market prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Wherein:
FIG. 1 is a flow chart of the production process of the present invention;
FIG. 2 is a flow chart of the cleaning of the present invention;
fig. 3 is a partial cross-sectional view of a metal coin according to the present invention.
Description of reference numerals:
10-metal coin body, 20-adhesion layer, 30-nanometer antibiotic mildew-proof layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 3, the metal coin manufactured by the process for manufacturing a nano antibacterial and mildewproof metal coin according to the present invention includes a metal coin body 10, an adhesion layer 20, and a nano antibacterial and mildewproof layer 30, wherein the adhesion layer 20 and the nano antibacterial and mildewproof layer 30 are sequentially coated on an outer side of the metal coin body 10.
Referring to fig. 1-2, the present invention discloses a process for producing a nano metal coin with antibacterial and antifungal effects, which is used for performing antibacterial and antifungal treatment on the entire surface of a metal coin body 10, and sequentially comprises the following steps: preparing a coating, cleaning, spraying an adhesion coating, spraying a nano antibacterial mildew-proof coating, and curing; the cleaning, the spraying of the adhesive coating, the spraying of the nano antibacterial mildew-proof coating and the curing are all completed through a production line, and the spraying of the adhesive coating is performed by adopting a dust-free automatic spraying work cabinet. The method specifically comprises the following steps:
preparing a coating: preparing a mildew-proof and antibacterial nano antibacterial mildew-proof coating;
cleaning: carrying out automatic decontamination spraying treatment on the whole surface of the metal coin;
spraying an adhesion coating: spraying an adhesive coating on the whole surface of the cleaned metal coin to form an adhesive layer 20, wherein the thickness of the adhesive layer 20 is controlled to be 5-10nm, so that the subsequent coating can be conveniently adhered;
spraying nano antibacterial and mildewproof paint: after the spraying of the adhesive coating is finished for at least five minutes, the whole surface of the metal coin is sprayed with the nano antibacterial and mildew-proof coating to form a nano antibacterial and mildew-proof layer 30, and the nano antibacterial and mildew-proof layer 30 is controlled to be 10-15 nm; wherein, the nano antibacterial mildew-proof coating is sprayed on the whole surface of the metal coin by adopting a high-speed rotating cup of 8000 revolutions per minute and utilizing an automatic spray gun thereof;
and (3) curing: and (3) conveying the metal coin sprayed with the nano antibacterial and mildew-proof coating into a high-temperature curing area, and drying for 30-50 minutes at the temperature of 150-300 ℃.
Specifically, the nano antibacterial and mildewproof coating comprises 80-110 parts by weight of acrylic resin, 60-100 parts by weight of polyvinyl resin, 30-50 parts by weight of organic solvent, 1.5-2.5 parts by weight of inorganic nano antibacterial agent, 1.5-5.5 parts by weight of mildewproof additive and 35-80 parts by weight of curing agent.
The preparation method of the nano antibacterial and mildewproof coating comprises the following steps: under the conventional environment and the stirring condition that the stirring speed is 350-400 r/min, uniformly mixing acrylic resin, polyvinyl acetate resin and an organic solvent in a reaction tank, adding a nano inorganic nano antibacterial agent and a mildew-proof additive into the reaction tank to uniformly mix and disperse all the components, and finally adding a curing agent into the reaction tank to uniformly mix to obtain the nano antibacterial mildew-proof coating.
The cleaning comprises the following specific steps:
a. spraying for removing dirt and rust;
b. spraying clear water for the first time;
c. bright passivation treatment;
d. spraying clear water for the second time;
e. drying treatment: and (3) drying for 15-20 minutes at constant temperature automatically under water vapor with the temperature of 130 ℃, wherein the error range of the temperature of 130 ℃ is controlled within 3 ℃ from top to bottom, namely 127-133 ℃.
Example 1
A production process of a nanometer antibacterial mildew-proof metal coin is used for carrying out antibacterial mildew-proof treatment on the whole surface of a metal coin body 10, and sequentially comprises the following steps: preparing a coating, cleaning, spraying an adhesion coating, spraying a nano antibacterial mildew-proof coating, and curing; the cleaning, the spraying of the adhesive coating, the spraying of the nano antibacterial mildew-proof coating and the curing are all completed through a production line, and the spraying of the adhesive coating is performed by adopting a dust-free automatic spraying work cabinet. The method specifically comprises the following steps:
preparing a coating: preparing a mildew-proof and antibacterial nano antibacterial mildew-proof coating, wherein the components of the nano antibacterial mildew-proof coating are as follows: 82 parts by weight of acrylic resin, 65 parts by weight of polyvinyl acetate resin, 32 parts by weight of organic solvent, 1.8 parts by weight of inorganic nano antibacterial agent, 2.2 parts by weight of mildew-proof additive and 40 parts by weight of curing agent, wherein the nano antibacterial and mildew-proof coating adopts the following preparation method: under the conventional environment and the stirring condition that the stirring speed is 350-400 r/min, uniformly mixing acrylic resin, polyvinyl acetate resin and an organic solvent in a reaction tank, adding a nano inorganic nano antibacterial agent and a mildew-proof additive into the reaction tank to uniformly mix and disperse all the components, and finally adding a curing agent into the reaction tank to uniformly mix to obtain the nano antibacterial mildew-proof coating;
cleaning: after the sand blasting is finished, the whole surface of the metal coin is automatically subjected to decontamination spraying treatment, and the specific cleaning steps are as follows: a. spraying for removing dirt and rust; b. spraying clear water for the first time; c. bright passivation treatment; d. spraying clear water for the second time; e. drying treatment: automatically drying for 16 minutes at constant temperature under water vapor with the temperature of 130 ℃;
spraying an adhesion coating: spraying an adhesive coating on the whole surface of the cleaned metal coin to form an adhesive layer 20, wherein the thickness of the adhesive layer 20 is controlled to be 6 nm;
spraying nano antibacterial and mildewproof paint: after the spraying of the adhesion coating is finished for at least five minutes, spraying the nano antibacterial and mildew-proof coating on the whole surface of the metal coin by adopting a high-speed rotating cup at 8000 revolutions per minute and utilizing an automatic spray gun of the high-speed rotating cup to form a nano antibacterial and mildew-proof layer 30, wherein the thickness of the nano antibacterial and mildew-proof layer 30 is controlled to be 11 nm;
and (3) curing: and (3) curing the metal coin sprayed with the nano antibacterial and mildew-proof coating for 46 minutes at a constant temperature of 160 ℃, and then air-cooling.
Example 2
A production process of a nanometer antibacterial mildew-proof metal coin is used for carrying out antibacterial mildew-proof treatment on the whole surface of a metal coin body 10, and sequentially comprises the following steps: preparing a coating, cleaning, spraying an adhesion coating, spraying a nano antibacterial mildew-proof coating, and curing; the cleaning, the spraying of the adhesive coating, the spraying of the nano antibacterial mildew-proof coating and the curing are all completed through a production line, and the spraying of the adhesive coating is performed by adopting a dust-free automatic spraying work cabinet. The method specifically comprises the following steps:
preparing a coating: preparing a mildew-proof and antibacterial nano antibacterial mildew-proof coating, wherein the components of the nano antibacterial mildew-proof coating are as follows: 95 parts by weight of acrylic resin, 80 parts by weight of polyvinyl acetate resin, 40 parts by weight of organic solvent, 2 parts by weight of inorganic nano antibacterial agent, 3 parts by weight of mildew-proof additive and 55 parts by weight of curing agent, wherein the nano antibacterial and mildew-proof coating adopts the following preparation method: under the conventional environment and the stirring condition that the stirring speed is 350-400 r/min, uniformly mixing acrylic resin, polyvinyl acetate resin and an organic solvent in a reaction tank, adding a nano inorganic nano antibacterial agent and a mildew-proof additive into the reaction tank to uniformly mix and disperse all the components, and finally adding a curing agent into the reaction tank to uniformly mix to obtain the nano antibacterial mildew-proof coating;
cleaning: after the sand blasting is finished, the whole surface of the metal coin is automatically subjected to decontamination spraying treatment, and the specific cleaning steps are as follows: a. spraying for removing dirt and rust; b. spraying clear water for the first time; c. bright passivation treatment; d. spraying clear water for the second time; e. drying treatment: automatically drying for 17 minutes at constant temperature under water vapor with the temperature of 130 ℃;
spraying an adhesion coating: spraying an adhesive coating on the whole surface of the cleaned metal coin to form an adhesive layer 20, wherein the thickness of the adhesive layer 20 is controlled to be 6 nm;
spraying nano antibacterial and mildewproof paint: after the spraying of the adhesion coating is finished for at least five minutes, spraying the nano antibacterial and mildew-proof coating on the whole surface of the metal coin by adopting a high-speed rotating cup at 8000 revolutions per minute and utilizing an automatic spray gun of the high-speed rotating cup to form a nano antibacterial and mildew-proof layer 30, wherein the thickness of the nano antibacterial and mildew-proof layer 30 is controlled to be 11 nm;
and (3) curing: and (3) curing the metal coin sprayed with the nano antibacterial and mildew-proof coating for 40 minutes in an environment with a constant temperature of 225 ℃, and then cooling by air.
Example 3
A production process of a nanometer antibacterial mildew-proof metal coin is used for carrying out antibacterial mildew-proof treatment on the whole surface of a metal coin body 10, and sequentially comprises the following steps: preparing a coating, cleaning, spraying an adhesion coating, spraying a nano antibacterial mildew-proof coating, and curing; the cleaning, the spraying of the adhesive coating, the spraying of the nano antibacterial mildew-proof coating and the curing are all completed through a production line, and the spraying of the adhesive coating is performed by adopting a dust-free automatic spraying work cabinet. The method specifically comprises the following steps:
preparing a coating: preparing a mildew-proof and antibacterial nano antibacterial mildew-proof coating, wherein the components of the nano antibacterial mildew-proof coating are as follows: 108 parts by weight of acrylic resin, 95 parts by weight of polyvinyl acetate resin, 48 parts by weight of organic solvent, 2.2 parts by weight of inorganic nano antibacterial agent, 4.8 parts by weight of mildew-proof additive and 75 parts by weight of curing agent, wherein the nano antibacterial and mildew-proof coating adopts the following preparation method: under the conventional environment and the stirring condition that the stirring speed is 350-400 r/min, uniformly mixing acrylic resin, polyvinyl acetate resin and an organic solvent in a reaction tank, adding a nano inorganic nano antibacterial agent and a mildew-proof additive into the reaction tank to uniformly mix and disperse all the components, and finally adding a curing agent into the reaction tank to uniformly mix to obtain the nano antibacterial mildew-proof coating;
cleaning: after the sand blasting is finished, the whole surface of the metal coin is automatically subjected to decontamination spraying treatment, and the specific cleaning steps are as follows: a. spraying for removing dirt and rust; b. spraying clear water for the first time; c. bright passivation treatment; d. spraying clear water for the second time; e. drying treatment: drying for 18 minutes at constant temperature automatically under the water vapor with the temperature of 130 ℃;
spraying an adhesion coating: spraying an adhesive coating on the whole surface of the cleaned metal coin to form an adhesive layer 20, wherein the thickness of the adhesive layer 20 is controlled to be 6 nm;
spraying nano antibacterial and mildewproof paint: after the spraying of the adhesion coating is finished for at least five minutes, spraying the nano antibacterial and mildew-proof coating on the whole surface of the metal coin by adopting a high-speed rotating cup at 8000 revolutions per minute and utilizing an automatic spray gun of the high-speed rotating cup to form a nano antibacterial and mildew-proof layer 30, wherein the thickness of the nano antibacterial and mildew-proof layer 30 is controlled to be 11 nm;
and (3) curing: and (3) curing the metal coin sprayed with the nano antibacterial and mildew-proof coating for 34 minutes at the constant temperature of 290 ℃, and then air-cooling.
Example 4
Example 4 is the same as example 1 except that the following portions are different.
In example 4, the thicknesses of the adhesion layer 20 and the nano antibacterial and antifungal layer 30 were controlled as follows: 9nm and 14nm, and the rest of the reaction solution was the same as in example 1.
Example 5
Example 5 is the same as example 2 except that the following portions are different.
In example 5, the thicknesses of the adhesion layer 20 and the nano antibacterial and antifungal layer 30 were controlled as follows: 9nm and 14nm, and the rest are the same as in example 2.
Example 6
Example 6 is the same as example 3 except that the following portions are different.
In example 6, the thicknesses of the adhesion layer 20 and the nano antibacterial and antifungal layer 30 were controlled as follows: 9nm and 14nm, and the rest are the same as those in example 3.
The metal coins manufactured in examples 1 to 6 were compared with the conventional common coins in terms of rust prevention, mold prevention, bacteria resistance, etc., and the experimental data are as follows:
as can be seen from the above table, the nano antibacterial and mildewproof metal coins in the embodiments 1 to 6 have the antirust and mildewproof effects, the mildewproof performance of the nano antibacterial and mildewproof metal coins reaches 0 grade, and the antibacterial effective rate on escherichia coli and staphylococcus aureus exceeds 99 percent compared with the existing common coins; also has the functions of fingerprint resistance, no oil stain adhesion and easy cleaning.
In conclusion, the production process of the nano antibacterial and mildewproof metal coin has the following beneficial effects:
firstly, by adopting the production process of the nano antibacterial mildew-proof metal coin, the produced metal coins made of various materials not only avoid the defects of yellow spots, mildew spots, rusting and the like on the surface on the basis of keeping the original advantages of the coins, but also endow the coins with the performances of antibacterial, bacteriostatic and mildew-proof (note: the antibacterial efficiency of the metal coins treated by the production process of the nano antibacterial mildew-proof on escherichia coli and staphylococcus aureus exceeds 99 percent through the inspection and identification of an antibacterial detection center of a Chinese academy of sciences, the mildew-proof performance reaches 0 grade, and the health, safe collection and use of people when the metal coins are used can be effectively cared;
secondly, by adopting the production process of the nano antibacterial mildew-proof metal coin, the produced metal coins of various materials have the advantages of fingerprint resistance, no greasy dirt adhesion and easy cleaning (note that a group of waste engine oil can be randomly smeared on the surface of the nano antibacterial mildew-proof metal coin or randomly scratched by an oil pen, the nano antibacterial mildew-proof metal coin is not required to be cleaned by water, and paper money or a towel is randomly and lightly smeared to be clean as new);
thirdly, by adopting the production process of the nano antibacterial mildew-proof metal coin, the surface hardness of the produced metal coins of various materials is higher than that of the conventional coin, can reach 8-9H, is more wear-resistant and corrosion-resistant, is not deformed and faded after long-term use, and can be collected and have the service life more than 1.5 times longer than that of the common metal coin after test and identification;
fourthly, by adopting the production process of the nano antibacterial mildew-proof metal coin, the produced metal coins of various materials have low production cost, high quality efficiency, vividness and uniqueness and very wide market prospect;
fifth, the nano antibacterial and mildewproof metal coin has the surface nano antibacterial and mildewproof layer material detected by the national authority as follows: the food-grade nano coating is nontoxic and tasteless, and the product only has the function of protecting the home health and life and has no safety problem.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A production process of a nanometer antibacterial mildew-proof metal coin is used for carrying out antibacterial mildew-proof treatment on the whole surface of a metal coin body, and is characterized by sequentially comprising the following steps: preparing a coating, cleaning, spraying an adhesion coating, spraying a nano antibacterial mildew-proof coating, and curing; wherein,
preparing a coating: preparing a mildew-proof and antibacterial nano antibacterial mildew-proof coating;
cleaning: carrying out automatic decontamination spraying treatment on the whole surface of the metal coin;
spraying an adhesion coating: spraying an adhesive coating on the whole surface of the cleaned metal coin to form an adhesive layer;
spraying nano antibacterial and mildewproof paint: after the spraying of the adhesive coating is finished for at least 3 minutes, the whole surface of the metal coin is sprayed with the nano antibacterial mildew-proof coating to form a nano antibacterial mildew-proof layer;
and (3) curing: and (3) conveying the metal coin sprayed with the nano antibacterial and mildew-proof coating into a high-temperature curing area, and drying for 30-50 minutes at the temperature of 150-300 ℃.
2. The process for producing a nano antibacterial and mildewproof metal coin according to claim 1, wherein the nano antibacterial and mildewproof coating comprises 80 to 110 parts by weight of acrylic resin, 60 to 100 parts by weight of polyvinyl resin, 30 to 50 parts by weight of organic solvent, 1.5 to 2.5 parts by weight of inorganic nano antibacterial agent, 1.5 to 5.5 parts by weight of mildewproof additive and 35 to 80 parts by weight of curing agent.
3. The production process of the nano antibacterial and mildewproof metal coin according to claim 2 is characterized in that the preparation method of the nano antibacterial and mildewproof coating comprises the following steps: under the conventional environment and the stirring condition that the stirring speed is 350-400 r/min, uniformly mixing acrylic resin, polyvinyl acetate resin and an organic solvent in a reaction tank, adding a nano inorganic nano antibacterial agent and a mildew-proof additive into the reaction tank to uniformly mix and disperse all the components, and finally adding a curing agent into the reaction tank to uniformly mix to obtain the nano antibacterial mildew-proof coating.
4. The production process of the nano antibacterial and mildewproof metal coin according to claim 1 is characterized in that the cleaning, the spraying of the adhesive coating, the spraying of the nano antibacterial and mildewproof coating and the curing are all finished through a production line, and the spraying of the adhesive coating is carried out by adopting a dust-free automatic spraying work cabinet.
5. The production process of the nano antibacterial and mildewproof metal coin according to claim 1, wherein the metal coin is subjected to five-pass treatment by adopting a flat plate type mechanical automatic spraying cleaning line, and the production process comprises the following specific steps of:
a. spraying for removing dirt and rust;
b. spraying clear water for the first time;
c. bright passivation treatment;
d. spraying clear water for the second time;
e. drying treatment: and (3) automatically drying for 15-20 minutes at constant temperature under water vapor with the temperature of 130 ℃.
6. The process for producing nano antibacterial and mildewproof metal coins according to claim 5, wherein the error range of the temperature of 130 ℃ in the drying treatment is controlled within 3 ℃ from top to bottom.
7. The process for producing a nano antibacterial and mildewproof metal coin according to claim 1, wherein the nano antibacterial and mildewproof coating is sprayed on the whole surface of the metal coin by using an automatic spray gun with a high-speed rotating cup of 8000 revolutions per minute.
8. The process for producing nano antibacterial and mildewproof metal coins according to claim 1, wherein the thickness of the attaching layer is controlled to be between 5 and 10 nm.
9. The process for producing nano antibacterial and mildewproof metal coins according to claim 1, wherein the nano antibacterial and mildewproof layer is controlled to be between 10 and 15 nm.
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