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a primer

A technology of primer and acrylic resin, which is applied in coating and other directions, and can solve the problems of primer yellowing and poor yellowing resistance

Active Publication Date: 2016-08-17
珠海展辰新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The prior art provides primers with multiple functions such as cold resistance, abrasion resistance and moisture resistance, but these primers provided by the prior art have poor yellowing resistance. After the surface of the material is coated with the primer provided by the prior art, after Under UV exposure for a period of time, the primer will appear yellowing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 45g of acrylic resin and 8g of butyl acetate are first mixed to obtain a first mixture; under the condition of 1000 rpm, 2g of polyamide wax is added to the first mixture for 10 minutes of second mixing , to obtain a second mixture; add 15g of barium white powder, 10g of titanium dioxide and 20g of talcum powder to the second mixture for the third mixing to obtain a primer.

[0051] The primer obtained by the embodiment of the present invention 1 is detected according to the standard of GB / T23983-2009 "Wood Coating Yellowing Resistance Determination Method", and the detection result is that the color difference value of the primer provided by the embodiment of the present invention 1 is 0.08, and the resistance to yellowing is 0.08. Yellowing performance is better.

Embodiment 2

[0053] 40g of acrylic resin and 4g of propylene glycol methyl ether acetate were first mixed to obtain the first mixture; under the condition of 800 rpm, 1g of polyamide wax was added to the first mixture for 20 minutes. The second mixture is obtained to obtain the second mixture; 20g of barium white powder, 8g of titanium dioxide and 30g of talcum powder are added to the second mixture for the third mixture to obtain the primer.

[0054] The primer obtained by the embodiment of the present invention 2 is detected according to the standard of GB / T23983-2009 "Wood Coating Yellowing Resistance Determination Method", and the detection result is that the color difference value of the primer provided by the embodiment of the present invention 2 is 0.08, and the resistance to yellowing is 0.08. Yellowing performance is better.

Embodiment 3

[0056] The acrylic resin of 50g and the butyl acetate of 12g are mixed for the first time to obtain the first mixture; under the condition of 1300 rev / min, the polyamide wax of 1.4g is added in the first mixture for 15 minutes for the second Mix to obtain a second mixture; add 16g of barium white powder, 9g of titanium dioxide and 24g of talcum powder to the second mixture for a third mixture to obtain a primer.

[0057] The primer obtained by the embodiment of the present invention 3 is detected according to the standard of GB / T23983-2009 "Wood Coating Yellowing Resistance Determination Method", and the detection result is that the color difference value of the primer provided by the embodiment of the present invention 3 is 0.09, and the resistance to yellowing is 0.09. Yellowing performance is better.

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PUM

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Abstract

The invention provides a primer, which comprises, in parts by weight: 40-50 parts of acrylic resin, the glass transition temperature of which is 45°C-60°C; 35-50 parts of filler; 8 parts ~10 parts of pigment; 1~2 parts of polyamide wax; A part of solvent, 0<A≤14. The primer provided by the present invention is a one-component primer, using acrylic resin with a glass transition temperature of 45°C to 60°C as a film-forming substance, and using this acrylic resin with a higher glass transition temperature as a film-forming substance to obtain the primer It has good yellowing resistance. Experimental result shows, according to the standard of GB / T23983-2009 "Wood Coating Yellowing Resistance Determination Method", the primer provided by the present invention is detected, and the test result is that the color difference value of the primer provided by the present invention is 0.08~0.1, and the yellowing resistance is 0.08~0.1. Good denaturation performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a primer. Background technique [0002] A primer is a paint that is applied directly to a surface to serve as a solid base for a topcoat. The primer is the first layer of the paint system, which is used to improve the adhesion of the topcoat and increase the fullness of the topcoat. The primer can also ensure the uniform absorption of the topcoat. At the same time, the primer can also provide the paint system with alkali resistance, Anti-corrosion and other functions, so that the paint system can play the best effect. [0003] The Chinese patent application number 201210228002.7 discloses a cold-resistant primer, which includes the following components: 0.1-0.2 parts by weight of silica pellets, 0.25-0.3 parts by weight of zinc naphthenate, 1.5 parts by weight of 2.5 parts by weight of anti-settling agent, 20.1 to 20.2 parts by weight of hydrochloric acid, and 100 to 102 parts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D7/12
Inventor 黎小华陈寿生
Owner 珠海展辰新材料股份有限公司