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Paint composition and painted member employing same

A composition and paint technology, which is applied in the field of painted parts and paint compositions, can solve the problems of uniform dispersion and affecting the performance of inorganic nanoparticles, and achieve the effect of high pencil hardness

Inactive Publication Date: 2014-06-04
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inorganic nanoparticles are easy to agglomerate, and it is difficult to disperse uniformly in the matrix, which affects the performance of inorganic nanoparticles in paint.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of surface-modified silica: Disperse 3g of fumed silica in 20ml of toluene; then slowly add 5ml of amino-containing silane coupling agent to the mixed system of silica and toluene, keep mixing The temperature of the system was 110 degrees Celsius, and the reaction was stirred for 2 hours at high speed.

[0017] Paint composition: Add 4g of modified white carbon black into 96g of polyurethane paint, and stir evenly to prepare a paint composition.

[0018] Painted parts: a PC substrate is provided, and the above-mentioned paint composition is coated on the surface of the substrate to obtain a painted part. The pencil hardness of this paint layer reaches H.

Embodiment 2

[0020] Preparation of surface-modified silica: Disperse 3g of fumed silica in 20ml of toluene; then slowly add 5ml of amino-containing aluminate dropwise to the mixed system of silica and toluene, keep the mixed system The temperature was 65 degrees Celsius, and the reaction was stirred at a high speed for 2.5 hours.

[0021] Paint composition: add 3g of modified white carbon black into 97g of polyurethane paint and stir evenly to prepare a paint composition.

[0022] Painted parts: a PC substrate is provided, and the above-mentioned paint composition is coated on the surface of the substrate to obtain a painted part. The pencil hardness of this paint layer reaches H.

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PUM

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Abstract

The invention provides a paint composition which contains a polyurethane paint and white carbon black, wherein the mass of the white carbon black accounts for 2% to 10% of the mass of the paint composition; the white carbon black is nano white carbon black obtained by a vapor phase method; the particle diameter of the white carbon black is between 30nm and 80nm; and a silane coupling agent containing amino groups or an aluminic acid ester containing the amino groups is bonded on the surface of the white carbon black. The invention further provides a painted member prepared by utilizing the paint composition. The white carbon black can be stably diffused in the paint composition. In addition, a paint layer formed by coating the paint composition has the high pencil hardness.

Description

technical field [0001] The invention relates to a paint composition and a painted article using the paint composition. Background technique [0002] Inorganic nanoparticles have small size effect, surface and interface effect, quantum size effect and macroscopic quantum tunneling effect. Adding some inorganic nanoparticles to the paint can improve the performance of the coating. However, inorganic nanoparticles are easy to agglomerate, and it is difficult to disperse uniformly in the matrix, which affects the performance of inorganic nanoparticles in paint. Contents of the invention [0003] In view of this, it is necessary to provide a paint composition that can effectively solve the above problems. [0004] In addition, it is also necessary to provide a painted article to which the above-mentioned paint composition is applied. [0005] A kind of paint composition, it contains polyurethane paint, white carbon black, wherein the quality of white carbon black is 2%-10% o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
CPCC09D7/1225Y10S977/773C09D175/04C08K9/06C09D7/67
Inventor 秦姚姚周书祥徐秋江
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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