CN116288564A - An anti-oxidation process of acrylic electroplating - Google Patents

Abstract

The invention provides an acrylic electroplating anti-oxidation process, which relates to the technical field of acrylic electroplating processes and comprises the following steps: step one: placing the semi-finished product of acrylic into a cleaning basket, spraying with clear water, and then cleaning glass with 8-20g/m ² Uniformly coating the surface of the glass, cleaning for 7-9min by using a hairbrush, removing surface cleaning liquid from the cleaned acrylic semi-finished product in a secondary spraying mode, and finally drying by hot air; according to the invention, the protective film is formed on the surface of the acrylic semi-finished product through antioxidant treatment, so that the phenomenon that the acrylic semi-finished product is oxidized due to irradiation of ultraviolet lamps in the subsequent paint spraying and curing process of the surface of the acrylic semi-finished product is avoided, the yield of the acrylic semi-finished product is improved, and meanwhile, a good foundation is established for the later paint spraying through an electrostatic dust removing mode before paint spraying, so that the electroplating work of the acrylic semi-finished product is facilitated.

Description

An anti-oxidation process of acrylic electroplating

technical field

The invention relates to the technical field of acrylic electroplating technology, in particular to an anti-oxidation technology of acrylic electroplating.

Background technique

Acrylic, also known as PMMA or plexiglass, and its chemical name is polymethyl methacrylate, is an important plastic polymer material developed earlier, with good transparency, chemical stability and weather resistance, easy to dye, easy It is widely used in the construction industry due to its beautiful processing and appearance. Plexiglass products can usually be divided into cast plate, extruded plate and molding compound. In the process of acrylic electroplating, it is usually necessary to carry out UV curing on the surface of the paint. Since acrylic is a kind of plexiglass, it is easy to cause Oxidation and discoloration of acrylic, which can easily cause oxidation during the curing process.

Contents of the invention

The purpose of the present invention is to solve the shortcomings in the prior art, and propose an acrylic electroplating anti-oxidation process.

In order to achieve the above object, the present invention adopts the following technical scheme: an acrylic electroplating anti-oxidation process, comprising the following steps:

Step 1: Put the acrylic semi-finished product into the cleaning basket and spray it with clean water, then apply the glass cleaning solution evenly on the glass surface according to the amount of 8-20g/ ^m2 , and use a brush to clean it for 7-9min, the cleaned acrylic semi-finished product Remove the surface cleaning liquid by means of secondary spraying, and finally dry with hot air;

Step 2: Put the cleaned acrylic semi-finished product into the dust collector, use the electrostatic field to ionize the gas so that the dust particles are charged and adsorbed to the electrode to collect dust;

Step 3: Form a protective film on the surface of the acrylic semi-finished product through antioxidant treatment, and then wash and dry the acrylic semi-finished product after film formation;

Step 4: Heat the primer and acrylic semi-finished products to 75-80°C in vacuum. After the compressed air is purified by an oil-water separator, a cold dryer and an adsorption desiccant, an airflow is formed by an air compressor, and the primer is atomized and sprayed on the glass. surface;

Step 5: Use ultraviolet rays to illuminate the acrylic semi-finished product, the irradiation time is 6-8s, and the distance between the ultraviolet lamp and the acrylic semi-finished product is 18cm;

Step 6: Coat the surface of the acrylic semi-finished product by electroplating, with a film thickness of 20nm-500nm. Repeat step 4 for the surface of the coated acrylic semi-finished product to spray the topcoat on the surface.

In order to initially clean the acrylic semi-finished product, the present invention is improved. In step one, the glass cleaning solution is made of sodium dodecylbenzenesulfonate, polyglycerol ester, glyceryl monostearate and glyceryl monostearate and ethyl alcohol. Glycol butyl ether, ammonium citrate, kaolin clay, ethanol and isopropanol mixed with deionized water.

In order to dry the acrylic semi-finished product, the improvement of the present invention is that in step 1, the temperature of the hot air drying needs to be controlled at 50-75°C.

In order to improve the cleaning effect, the present invention is improved in that in step 1, the brush is an electrostatic brush.

In order to fully contact the antioxidant, the improvement of the present invention is that in step 3, the antioxidant treatment is performed by soaking or spraying, and the concentration of the antioxidant is 2-5%.

In order to clean up the acrylic semi-finished product, the present invention is improved. In step 3, the water washing adopts the method of manipulator unloading, and the acrylic semi-finished product is taken out of the water after soaking for 8-10s.

In order to achieve the anti-oxidation effect, the present invention is improved in that in the third step, the antioxidant is formed by mixing benzotriazole and tolylbenzotriazole.

In order to assist spraying, the present invention improves that in step 4, the line speed is 10-15m/min, and the primer contains 0.8% adhesion promoter by weight.

In order to change the spraying effect, the present invention improves that in step 4, the spraying air pressure is 0.25-0.35Mpa, the atomization angle of the paint mist is 45°, and the distance between the spray gun and the glass surface is 12-14cm.

Compared with prior art, advantage and positive effect of the present invention are,

In the present invention, a protective film is formed on the surface of the acrylic semi-finished product through anti-oxidant treatment, thereby avoiding the oxidation phenomenon of the acrylic semi-finished product caused by the irradiation of ultraviolet light in the subsequent process of spraying and curing the surface of the acrylic semi-finished product, and improving the finished product yield of the acrylic semi-finished product , At the same time, through the way of electrostatic dust removal before painting, a good foundation is established for the later painting, so as to facilitate the electroplating of acrylic semi-finished products.

Description of drawings

Fig. 1 is a flow chart of an acrylic electroplating anti-oxidation process proposed by the present invention.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the present invention is not limited to the specific embodiments disclosed below. limit.

Embodiment 1, please refer to Fig. 1, the present invention provides a technical solution: an anti-oxidation process of acrylic electroplating, comprising the following steps:

Step 1: Put the acrylic semi-finished product into the cleaning basket and spray it with clean water, then apply the glass cleaning solution evenly on the glass surface according to the amount of 10g/ ^m2 , and use a brush to clean it for 7 minutes. After cleaning, the acrylic semi-finished product is sprayed twice. Remove the surface cleaning solution by spraying, and finally dry with hot air;

Step 2: Put the cleaned acrylic semi-finished product into the dust collector, use the electrostatic field to ionize the gas so that the dust particles are charged and adsorbed to the electrode to collect dust;

Step 3: Form a protective film on the surface of the acrylic semi-finished product through antioxidant treatment, and then wash and dry the acrylic semi-finished product after film formation;

Step 4: Vacuum heat the primer and acrylic semi-finished products to 80°C, the compressed air is purified by an oil-water separator, a cold dryer and an adsorption desiccant, and then an airflow is formed by an air compressor, and the primer is atomized and sprayed on the glass surface;

Step 5: Use ultraviolet light to illuminate the acrylic semi-finished product, the irradiation time is 8s, and the distance between the ultraviolet lamp and the acrylic semi-finished product is 18cm;

Step 6: Coat the surface of the acrylic semi-finished product by electroplating, with a film thickness of 200nm. Repeat step 4 of the coated acrylic semi-finished product to spray the topcoat on the surface.

In step one, the glass cleaning liquid is made of sodium dodecylbenzenesulfonate, polyglycerol ester, glyceryl monostearate and glyceryl monostearate and butyl glycol ether, ammonium citrate, kaolin, Ethanol and isopropanol mixed with deionized water.

In step one, the temperature of hot air drying needs to be controlled at 75°C.

In step 1, the brush adopts an electrostatic brush. The anti-static brush is often used as a tool for cleaning dust in the industry, such as cleaning the surface dirt of SMD and PCB boards. The static electricity generated can be released to the ground. Its function The mechanism is to use the conductive plastic or metal material used in the anti-static brush to make the handle, and the anti-static plastic wire or metal wire, and animal hair to make the bristles. It has the characteristics of stable anti-static performance and convenient use.

In the third step, the antioxidant treatment is carried out by soaking or spraying, and the antioxidant concentration is 5%.

In the third step, the water washing adopts the method of manipulator unloading, and the acrylic semi-finished product is taken out of the water after soaking for 10 seconds.

In the third step, the antioxidant is formed by mixing benzotriazole and tolylbenzotriazole.

In step 4, the linear speed of the assembly line is 15m/min, and the primer contains 0.8% by weight of adhesion promoter.

In step 4, the spraying air pressure is 0.25Mpa, the atomization angle of the paint mist is 45°, and the distance between the spray gun and the glass surface is 14cm.

Embodiment 2, please refer to Fig. 1, the present invention provides a technical solution: an anti-oxidation process of acrylic electroplating, comprising the following steps:

Step 1: Put the acrylic semi-finished product into the cleaning basket and spray it with clean water, then apply the glass cleaning solution evenly on the glass surface according to the amount of 16g/ ^m2 , and use a brush to clean it for 8 minutes. After cleaning, the acrylic semi-finished product is sprayed twice. Remove the surface cleaning solution by spraying, and finally dry with hot air;

Step 2: Put the cleaned acrylic semi-finished product into the dust collector, use the electrostatic field to ionize the gas so that the dust particles are charged and adsorbed to the electrode to collect dust;

Step 3: Form a protective film on the surface of the acrylic semi-finished product through antioxidant treatment, and then wash and dry the acrylic semi-finished product after film formation;

Step 4: Vacuum heat the primer and acrylic semi-finished products to 78°C, the compressed air is purified by an oil-water separator, a cold dryer and an adsorption desiccant, and then an airflow is formed by an air compressor, and the primer is atomized and sprayed on the glass surface;

Step 5: Use ultraviolet rays to illuminate the acrylic semi-finished product, the irradiation time is 7s, and the distance between the ultraviolet lamp and the acrylic semi-finished product is 18cm;

Step 6: Coating the surface of the acrylic semi-finished product by electroplating, with a film thickness of 100nm. Repeat step 4 for the surface of the coated acrylic semi-finished product to spray the topcoat. After spraying, repeat step 5 for light work, and finally the acrylic semi-finished product is finished.

In step one, the glass cleaning liquid is made of sodium dodecylbenzenesulfonate, polyglycerol ester, glyceryl monostearate and glyceryl monostearate and butyl glycol ether, ammonium citrate, kaolin, Ethanol and isopropanol mixed with deionized water.

In step one, the temperature of hot air drying needs to be controlled at 60°C.

In step 1, the brush adopts an electrostatic brush. The anti-static brush is often used as a tool for cleaning dust in the industry, such as cleaning the surface dirt of SMD and PCB boards. The static electricity generated can be released to the ground. Its function The mechanism is to use the conductive plastic or metal material used in the anti-static brush to make the handle, and the anti-static plastic wire or metal wire, and animal hair to make the bristles. It has the characteristics of stable anti-static performance and convenient use.

In the third step, the antioxidant treatment is carried out by soaking or spraying, and the antioxidant concentration is 5%.

In step 3, the water washing adopts the method of manipulator unloading, and the acrylic semi-finished product is taken out of the water after soaking for 9s.

In the third step, the antioxidant is formed by mixing benzotriazole and tolylbenzotriazole.

In step 4, the linear speed of the assembly line is 12m/min, and the primer contains 0.8% by weight of adhesion promoter.

In step 4, the spraying air pressure is 0.35Mpa, the atomization angle of the paint mist is 45°, and the distance between the spray gun and the glass surface is 14cm.

Embodiment 3, please refer to Fig. 1, the present invention provides a technical solution: an anti-oxidation process of acrylic electroplating, including the following steps:

Step 1: Put the acrylic semi-finished product into the cleaning basket and spray it with clean water, then apply the glass cleaning solution evenly on the glass surface according to the amount of 9g/ ^m2 , and use a brush to clean it for 7 minutes. After cleaning, the acrylic semi-finished product is sprayed twice. Remove the surface cleaning solution by spraying, and finally dry with hot air;

Step 2: Put the cleaned acrylic semi-finished product into the dust collector, use the electrostatic field to ionize the gas so that the dust particles are charged and adsorbed to the electrode to collect dust;

Step 3: Form a protective film on the surface of the acrylic semi-finished product through antioxidant treatment, and then wash and dry the acrylic semi-finished product after film formation;

Step 4: Vacuum heat the primer and acrylic semi-finished products to 78°C, the compressed air is purified by an oil-water separator, a cold dryer and an adsorption desiccant, and then an airflow is formed by an air compressor, and the primer is atomized and sprayed on the glass surface;

Step 5: Use ultraviolet rays to illuminate the acrylic semi-finished product, the irradiation time is 6s, and the distance between the ultraviolet lamp and the acrylic semi-finished product is 18cm;

Step 6: Coat the surface of the acrylic semi-finished product by electroplating, with a film thickness of 80nm. Repeat step 4 for the surface of the coated acrylic semi-finished product to spray the topcoat on the surface.

In step one, the glass cleaning liquid is made of sodium dodecylbenzenesulfonate, polyglycerol ester, glyceryl monostearate and glyceryl monostearate and butyl glycol ether, ammonium citrate, kaolin, Ethanol and isopropanol mixed with deionized water.

In step one, the temperature of hot air drying needs to be controlled at 50°C.

In step 1, the brush adopts an electrostatic brush. The anti-static brush is often used as a tool for cleaning dust in the industry, such as cleaning the surface dirt of SMD and PCB boards. The static electricity generated can be released to the ground. Its function The mechanism is to use the conductive plastic or metal material used in the anti-static brush to make the handle, and the anti-static plastic wire or metal wire, and animal hair to make the bristles. It has the characteristics of stable anti-static performance and convenient use.

In the third step, the antioxidant treatment is carried out by soaking or spraying, and the antioxidant concentration is 3%.

In step 3, the water washing adopts the method of manipulator unloading, and the acrylic semi-finished product is taken out of the water after soaking for 8s.

In the third step, the antioxidant is formed by mixing benzotriazole and tolylbenzotriazole.

In step 4, the linear speed of the assembly line is 11 m/min, and the primer contains 0.8% by weight of adhesion promoter.

In step 4, the spraying air pressure is 0.25Mpa, the atomization angle of the paint mist is 45°, and the distance between the spray gun and the glass surface is 12cm.

In the present invention, a protective film is formed on the surface of the acrylic semi-finished product through anti-oxidant treatment, thereby avoiding the oxidation phenomenon of the acrylic semi-finished product caused by the irradiation of ultraviolet light in the subsequent process of spraying and curing the surface of the acrylic semi-finished product, and improving the finished product yield of the acrylic semi-finished product , At the same time, through the way of electrostatic dust removal before painting, a good foundation is established for the later painting, so as to facilitate the electroplating of acrylic semi-finished products.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solutions of the present invention without departing from the content of the technical solutions of the present invention.

Claims (9)

1. an acrylic electroplating anti-oxidation process, is characterized in that, comprises the following steps: Step 1: Put the acrylic semi-finished product into the cleaning basket and spray it with clean water, then apply the glass cleaning solution evenly on the glass surface according to the amount of 8-20g/ ^m2 , and use a brush to clean it for 7-9min, the cleaned acrylic semi-finished product Remove the surface cleaning liquid by means of secondary spraying, and finally dry with hot air; Step 2: Put the cleaned acrylic semi-finished product into the dust collector, use the electrostatic field to ionize the gas so that the dust particles are charged and adsorbed to the electrode to collect dust; Step 3: Form a protective film on the surface of the acrylic semi-finished product through antioxidant treatment, and then wash and dry the acrylic semi-finished product after film formation; Step 4: Heat the primer and acrylic semi-finished products to 75-80°C in vacuum. After the compressed air is purified by an oil-water separator, a cold dryer and an adsorption desiccant, an airflow is formed by an air compressor, and the primer is atomized and sprayed on the glass. surface; Step 5: Use ultraviolet rays to illuminate the acrylic semi-finished product, the irradiation time is 6-8s, and the distance between the ultraviolet lamp and the acrylic semi-finished product is 18cm; Step 6: Coat the surface of the acrylic semi-finished product by electroplating, with a film thickness of 20nm-500nm. Repeat step 4 for the surface of the coated acrylic semi-finished product to spray the topcoat on the surface. 2. The acrylic electroplating anti-oxidation process according to claim 1 is characterized in that: in step 1, the glass cleaning solution is composed of sodium dodecylbenzenesulfonate, polyglycerol ester, glyceryl monostearate and Glyceryl monostearate and butyl glycol ether, ammonium citrate, kaolin clay, ethanol and isopropanol mixed with deionized water. 3. The anti-oxidation process of acrylic electroplating according to claim 1, characterized in that: in step 1, the temperature of hot air drying needs to be controlled at 50-75°C. 4. The anti-oxidation process of acrylic electroplating according to claim 1, characterized in that: in step 1, the brush is an electrostatic brush. 5. The anti-oxidation process of acrylic electroplating according to claim 1, characterized in that: in step 3, the antioxidant treatment is by soaking or spraying, and the antioxidant concentration is 2-5%. 6. The anti-oxidation process of acrylic electroplating according to claim 1, characterized in that: in step 3, the water washing adopts the method of manipulator unloading, and the acrylic semi-finished product is taken out of the water after soaking for 8-10s. 7. The anti-oxidation process of acrylic electroplating according to claim 1, characterized in that: in step 3, the antioxidant is formed by mixing benzotriazole and tolylbenzotriazole. 8. The anti-oxidation process of acrylic electroplating according to claim 1, characterized in that: in step 4, the line speed is 10-15m/min, and the primer contains an adhesion promoter of 0.8% by weight. 9. The acrylic electroplating anti-oxidation process according to claim 1, characterized in that: in step 4, the spraying air pressure is 0.25-0.35Mpa, the atomization angle of the paint mist is 45°, and the distance between the spray gun and the glass surface is 12 -14cm.

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