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Coating method capable of reducing surface chalking of plastic part

A coating method and a technology for plastic parts, which are applied in the direction of surface coating liquid devices, coatings, anti-corrosion coatings, etc., can solve problems such as whitening of the paint film, affecting the color uniformity and light transmittance of plastic parts, and achieve Slow volatilization speed, improved chemical stability, fast drying effect

Inactive Publication Date: 2018-05-18
安徽新胜塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the development of material science, plastic parts have been used more and more widely. They have the characteristics of light weight, high strength, corrosion resistance and oxidation resistance. Plastic coating is the last step in the process of plastic parts processing. Operation steps, which can further improve the mechanical properties and chemical properties of plastic parts, but in the prior art, during the process of painting plastic parts, the prepared paint film is prone to whitening, which is serious Affects the uniformity and light transmittance of the color of plastic parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A coating method for reducing whitening of plastic parts, comprising the following steps:

[0019] (1) In parts by weight, after mixing 35 parts of epoxy resin and 55 parts of acetone evenly, continue to stir until the epoxy resin is completely dissolved, add 20 parts of dihydroxy functional silicone oligomers to it, and mix the After the temperature rises to 67°C, continue to add 3 parts of initiator therein, and heat preservation treatment for 3 hours to obtain a copolymer emulsion;

[0020] (2) In parts by weight, after uniformly mixing 42 parts of copolymer emulsion, 11 parts of isopropanol pinacol borate, and 2 parts of tetrabromobisphenol S, a coating for plastic parts is obtained;

[0021] (3) After the surface of the plastic part is decontaminated and degreased, the plastic part paint prepared in step (2) is evenly painted on the surface of the plastic part, and then put into an oven for drying treatment to obtain a finished product.

[0022] Specifically, in t...

Embodiment 2

[0028] A coating method for reducing whitening of plastic parts, comprising the following steps:

[0029] (1) In parts by weight, after mixing 40 parts of epoxy resin and 58 parts of acetone evenly, continue to stir until the epoxy resin is completely dissolved, add 24 parts of dihydroxy functional silicone oligomers to it, and mix the After the temperature rises to 70°C, continue to add 6 parts of initiator therein, and heat preservation treatment for 3.5 hours to obtain a copolymer emulsion;

[0030] (2) In parts by weight, after uniformly mixing 48 parts of copolymer emulsion, 13 parts of isopropanol pinacol borate, and 3 parts of tetrabromobisphenol S, the coating for plastic parts was prepared;

[0031] (3) After the surface of the plastic part is decontaminated and degreased, the plastic part paint prepared in step (2) is evenly painted on the surface of the plastic part, and then put into an oven for drying treatment to obtain a finished product.

[0032] Specifically,...

Embodiment 3

[0038] A coating method for reducing whitening of plastic parts, comprising the following steps:

[0039] (1) In parts by weight, after mixing 45 parts of epoxy resin and 60 parts of acetone evenly, continue to stir until the epoxy resin is completely dissolved, add 26 parts of dihydroxy functional silicone oligomers to it, and mix the After the temperature rises to 75°C, continue to add 9 parts of initiator therein, and heat preservation treatment for 4 hours to obtain a copolymer emulsion;

[0040] (2) In parts by weight, after uniformly mixing 50 parts of copolymer emulsion, 15 parts of isopropanol pinacol borate, and 5 parts of tetrabromobisphenol S, a coating for plastic parts is prepared;

[0041] (3) After the surface of the plastic part is decontaminated and degreased, the plastic part paint prepared in step (2) is evenly painted on the surface of the plastic part, and then put into an oven for drying treatment to obtain a finished product.

[0042] Specifically, in t...

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PUM

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Abstract

The invention discloses a coating method capable of reducing surface chalking of a plastic part. The method comprises the following steps: (1) uniformly mixing and continuously stirring epoxy resin and acetone until epoxy resin is totally dissolved, adding an organosilicone oligomer containing double-hydroxyl functional groups to the mixture, heating the mixture, continuing to add an initiator tothe mixture, and performing insulation treatment to prepare a copolymer emulsion; (2) uniformly mixing the copolymer emulsion, isopropoxyboronic acid pinacol ester and octabromobisphenol-S to preparea coating for the plastic part; (3) removing dirt and oil from the surface of the plastic part, then uniformly brushing the coating for the plastic part to the surface of the plastic part, placing theplastic part in a drying oven for drying to prepare a finished product. The surface of the prepared plastic part has excellent wear resistance, high-temperature resistance and corrosion resistance and is not prone to chalking after coating, and the quality of the plastic part is improved greatly.

Description

technical field [0001] The invention belongs to the technical field of coating of plastic parts, and in particular relates to a coating method for reducing the whitening phenomenon of plastic parts. Background technique [0002] In recent years, with the development of material science, plastic parts have been used more and more widely. They have the characteristics of light weight, high strength, corrosion resistance and oxidation resistance. Plastic coating is the last step in the process of plastic parts processing. Operation steps, which can further improve the mechanical properties and chemical properties of plastic parts, but in the prior art, during the process of painting plastic parts, the prepared paint film is prone to whitening, which is serious It affects the color uniformity and light transmittance of plastic parts. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a coating method for reducing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D187/00C09D5/08C09D7/63C09D7/20C08G81/00B05D1/28B05D7/02B05D7/24B05D3/02
CPCB05D1/28B05D3/0254B05D7/02B05D7/24C08G81/00C08K5/136C08K5/55C09D5/08C09D5/18C09D187/005
Inventor 吴二胜
Owner 安徽新胜塑料科技有限公司
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