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A plastic surface treatment process

A plastic surface treatment and plastic technology, applied in the direction of coating, etc., can solve the problems of plastic shell toughness decrease, plastic brittleness, insufficient toughness, etc., and achieve good adhesion, fast film formation, and bright color effects

Active Publication Date: 2016-10-05
CHUZHOU HONGYUAN SPRAYING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the toughness of conventional shell plastics is insufficient, especially as the use time increases, for example, after 5-8 years of use, the toughness of plastic shells decreases significantly, and it is not uncommon for plastics to become brittle and cracked.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Sand the plastic surface with sandpaper;

[0023] Degrease the plastic surface with ethanol;

[0024] Use negative ion dedusting device to dedust the plastic surface;

[0025] The plastic surface is sprayed with the first paint, and the first paint includes the following raw material components in parts by weight:

[0026] Thermoplastic acrylic resin 30; ethyl acetate 8; polyethylene wax 5, cellulose ether 2, glycol 7.5, 2-ethyl methacrylate and silicone copolymer 50, silicone defoamer: 0.1;

[0027] Bake the plastic sprayed with the first paint in an oven for 1 to 3 minutes, and control the temperature at 50°C to 70°C;

[0028] Adopt the second coating to spray the plastic surface, and described second coating comprises the raw material component of following parts by weight: 30 parts of acrylic one-component paints, nano-silica 3, nano-silicon carbide 1.5, plastic anti-aging agent 1.5;

[0029] The plastic sprayed with the second paint is placed in an oven and bake...

Embodiment 2

[0032] Sand the plastic surface with sandpaper;

[0033] Degrease the plastic surface with ethane;

[0034] Use negative ion dedusting device to dedust the plastic surface;

[0035] The plastic surface is sprayed with the first paint, and the first paint includes the following raw material components in parts by weight:

[0036] Thermoplastic acrylic resin 50; ethyl acetate 12; polyethylene wax 7, cellulose ether 3, glycol 8.5, 2-ethyl methacrylate and silicone copolymer 75, defoamer: 0.3;

[0037] Bake the plastic sprayed with the first paint in an oven for 1 to 3 minutes, and control the temperature at 50°C to 70°C;

[0038] Adopt the second coating to spray the plastic surface, and described second coating comprises the raw material component of following parts by weight: 40 parts of acrylic one-component paints, nano-silica 4, nano-silicon carbide 2, plastic anti-aging agent 3.5;

[0039] The plastic sprayed with the second paint is placed in an oven and baked for 5-10 ...

Embodiment 3

[0043] Sand the plastic surface with sandpaper;

[0044] Degrease the plastic surface with ethanol;

[0045] Use negative ion dedusting device to dedust the plastic surface;

[0046] The plastic surface is sprayed with the first paint, and the first paint includes the following raw material components in parts by weight:

[0047] Thermoplastic acrylic resin 50; ethyl acetate 10; polyethylene wax 9, cellulose ether 4, glycol 7.5, 2 ~ ethyl methacrylate and silicone copolymer 80, defoamer: 0.3.

[0048] Bake the plastic sprayed with the first paint in an oven for 1 to 3 minutes, and control the temperature at 50°C to 70°C;

[0049] The plastic surface was sprayed with the second coating, which included the following raw material components in parts by weight: 50 parts of acrylic one-component paint, 5 nanometer silicon dioxide, 2 nanometer silicon carbide, and 5.5 parts of plastic anti-aging agent.

[0050] The plastic sprayed with the second paint is placed in an oven and ba...

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Abstract

The invention discloses a plastic surface treatment process. Through earlier-stage processing and a coating technology, the toughness of a plastic surface can be effectively improved, and the durability of plastic is improved. The plastic surface treatment process comprises the following steps that the plastic surface is polished through abrasive paper; ungreasing treatment is conducted on the plastic surface through a solution; dust on the plastic surface is removed through an anion dust collection device; the plastic surface is coated with a first coating and baked; the plastic surface is coated with a second coating and baked. By the adoption of the plastic surface treatment process, a film can be rapidly formed on the plastic surface, the adhesion force is high, a paint film is high in water resistance, corrosion resistance and aging resistance, the toughness of the plastic can be remarkably improved, the plastic surface is bright in color and free of yellow discolouration, and the plastic is particularly suitable for manufacturing of white shells of household appliances such as an air conditioner and a refrigerator.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and in particular relates to a surface treatment method of home appliance plastics. Background technique [0002] Plastic is an important raw material for the manufacture of household appliances, and the shells and internal components of many appliances need to be made of plastic. The main component of plastic is resin, which has a certain degree of flexibility, is easy to shape, and has low cost. It is widely used in the home appliance industry. However, the toughness of conventional shell plastics is insufficient, especially as the use time increases, for example, after 5-8 years of use, the toughness of plastic shells decreases significantly, and it is not uncommon for plastics to become brittle and cracked. Contents of the invention [0003] In order to solve the above problems, the present invention discloses a plastic surface treatment process, which can effectively increase th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C08J7/02C09D133/00C09D133/10C09D7/12
Inventor 王新志
Owner CHUZHOU HONGYUAN SPRAYING