Coating system and application thereof

A coating and coating technology, which is applied in the direction of polyester coating, polyurea/polyurethane coating, coating, etc., can solve the problems of surface coating stress cracking, coating surface performance test is not up to standard, etc., to achieve smooth knife edge, excellent Adhesion performance, effect of reducing technical risk

Active Publication Date: 2017-06-23
松井(上海)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a coating system and its application to solve the technical problems that the joint between plastic and metal is prone to surface coating stress cracking and the coating surface performance test is not up to standard

Method used

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  • Coating system and application thereof
  • Coating system and application thereof
  • Coating system and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041]The coating system that present embodiment provides, comprises primer, filler paint, color paint and finish paint, and primer comprises the polyester resin of 25 parts by weight, the pigment filler of 15 parts (comprising 10 parts of titanium dioxide, talcum powder 5 parts), 3 parts of adhesion promoter (organic phosphate compound in this embodiment), 0.5 parts of acrylic modified rheology modifier, 56.3 parts of diluent (including 20 parts of ethyl acetate, butyl acetate 26.3 parts, 10 parts of cyclohexanone), 0.2 parts of drier. Refer to Table 1 for the parts by weight of the above components.

[0042] Table 1: Parts by weight of each component in the primer of Examples 1 to 5 and Comparative Example 1

[0043] Primer components Comparative example 1 Example 1 Example 2 Example 3 Example 4 Example 5 polyester resin - 25 30 30 30 30 Hydroxy Acrylic Resin 30 - - - - - Titanium dioxide 10 10 10 10 10 10 talcum p...

Embodiment 2

[0079] In the paint system of this embodiment, the parts by weight of each component in the primer, filler paint, color paint and top coat are respectively shown in Table 1 to Table 4, and the preparation method of each paint in the paint system is the same as in Example 1 .

Embodiment 3

[0081] In the paint system of this embodiment, the parts by weight of each component in the primer, filler paint, color paint and top coat are respectively shown in Table 1 to Table 4, and the preparation method of each paint in the paint system is the same as in Example 1 .

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Abstract

The invention discloses a coating system which comprises primer, filling paint, colored paint and finish paint. The primer is prepared from polyether resin, pigment filler, an adhesion promoter, a rheological agent, dilutent and a dryer. The invention further discloses application of the coating system to plastic and metal combined parts. The application comprises the steps of adding a curing agent into the primer, the filling paint and the colored paint to obtain a primer sample, a filling paint sample and a colored paint sample; coating the plastic and metal combined parts with the primer sample and baking; coating the product with the filling paint sample, baking and then polishing through abrasive paper; coating the product with the colored paint sample and baking; coating the product with the finish paint, and curing by ultraviolet light. According to the coating system, the primer only needs one kind of resin to provide good adhesion performance for plastic and metal, so technical risk of using varieties of resin is reduced and cost is reduced; application and operation are simple; the product has good wear resistance and high adhesion and is prevented from cracking in a CNC and anodizing manufacturing process after being coated.

Description

technical field [0001] The present invention relates to the technical field of coating plastic and metal joints, in particular, to a coating system and its application, especially to a coating system for plastic and metal joints and its application on plastic and metal joints. Background technique [0002] At present, the application of metal materials on the casing is more and more extensive. The surface coating of plastic and metal joints is usually to spray and bake the plastic and metal parts independently, and then assemble the two to form a joint. There are deep bonding lines in the bonding parts made in this way, which affects the overall appearance and flatness of the product; the method of combining plastic and metal by in-mold insert injection molding and then coating the surface will cause problems due to the two parts of plastic and metal. The large difference in the thermal expansion coefficient of the substrate causes the stress cracking of the surface coating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/00C09D7/12C09D175/14C09D133/00C09D7/00B05D7/00
CPCB05D7/584C08K3/34C08K5/521C08K2003/2241C08L2205/025C09D5/002C09D7/20C09D7/61C09D7/63C09D133/00C09D167/00C09D175/14C08L75/14
Inventor 汪文笔李玉良周长胜
Owner 松井(上海)新材料研究院有限公司
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