Abrasion-resistant scratch-proof coating and preparation method thereof

An anti-scratch and paint technology, applied in the field of paint, can solve the problems of poor anti-scratch and anti-wear properties, poor filler dispersion, poor adhesion, etc., to avoid interface cracking, increase hardness and anti-corrosion performance, improved abrasion and scratch resistance

Inactive Publication Date: 2019-02-22
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a wear-resistant and scratch-resistant coating and its preparation method, which solves the problems of poor scratch resistance and abrasion resistance, low hardness, poor adhesion and filler dispersion of the existing coatings. sexual problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]1) Put 5 g of SiC micropowder with a particle size of 600nm in 60 g of 10% sulfuric acid solution and stir at room temperature for 4 hours, then filter and wash repeatedly with deionized water until the conductivity is constant, then suction filter to obtain a filter cake, which is placed in a vacuum box Dry at 60°C to obtain pretreated SiC powder;

[0033] 2) Take 1g of the pretreated SiC micropowder obtained in step 1) and evenly disperse it in 30 g of toluene, then add 10 g of monomethyltrichlorosilane to react at 90°C for 5 h, suction filter and dry to obtain the surface-modified SiC micropowder ;

[0034] 3) Dissolve OP-9, PMAANa and SDS in water, then add the surface-modified SiC micropowder obtained in step 2), and ultrasonically disperse for 5 minutes to form a uniform suspension, so that the concentration of OP-9 in the suspension is 4.0 g / L, the concentration of PMAANa is 3.0 g / L, the concentration of SDS is 2.0 g / L, and the concentration of SiC micropowder i...

Embodiment 2

[0038] 1) Put 5 g of SiC micropowder with a particle size of 700nm in 130 g of 10% sulfuric acid solution and stir at room temperature for 4 hours, then filter and wash repeatedly with deionized water until the conductivity is constant, then suction filter to obtain a filter cake, which is placed in a vacuum box Dry at 60°C to obtain pretreated SiC powder;

[0039] 2) Take 1g of the pretreated SiC micropowder obtained in step 1) and evenly disperse it in 40 g of toluene, then add 15 g of monomethyltrichlorosilane to react at 90°C for 5 h, suction filter and dry to obtain the surface modified SiC micropowder ;

[0040] 3) Dissolve OP-9, PMAANa and SDS in water, then add the surface-modified SiC micropowder obtained in step 2), and ultrasonically disperse for 5 minutes to form a uniform suspension, so that the concentration of OP-9 in the suspension is 4.5g / L, the concentration of PMAANa is 3.5 g / L, the concentration of SDS is 2.1 g / L, and the concentration of SiC micropowder ...

Embodiment 3

[0044] 1) Put 5 g of SiC micropowder with a particle size of 800nm ​​in 100 g of 10% hydrochloric acid solution and stir at room temperature for 4 hours, then filter and wash repeatedly with deionized water until the conductivity is constant, then filter the filter cake with suction, put it in a vacuum box Dry at 60°C to obtain pretreated SiC powder;

[0045] 2) Take 1 g of the pretreated SiC micropowder obtained in step 1) and evenly disperse it in 45 g of toluene, then add 20 g of monomethyltrichlorosilane to react at 90°C for 5 h, suction filter and dry to obtain the surface-modified SiC micropowder ;

[0046] 3) Dissolve OP-9, PMAANa and SDS in water, then add the surface-modified SiC micropowder obtained in step 2), and ultrasonically disperse for 5 minutes to form a uniform suspension, so that the concentration of OP-9 in the suspension is 4.5 g / L, the concentration of PMAANa is 3.5g / L, the concentration of SDS is 2.2g / L, and the concentration of SiC micropowder is 7.0...

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Abstract

The invention discloses abrasion-resistant scratch-proof coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: 100-120 parts of a film forming agent, 30-50 parts of filler, 25-45 parts of a diluting agent, 1-5 parts of a defoaming agent and 30-50 parts of a curing agent, wherein the filler is mixture of SiC and sodium benzenesulfonate coated polymer. The coating has the characteristics of large hardness, abrasion resistance, scratch resistance, strong adhesion and the like, has the hardness to be over 6H and adhesion to be zero grade, and can avoid the problems of coating cracking, peeling, falling and the like, and improve the coating construction performance, so that the technical problems of poor filler dispersibility, low hardness of coating, easily scratched coating and poor adhesion can be solved. The preparation method is simple and easily controllable in operation, can easily realize industrial production, and has anexcellent application prospect.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a wear-resistant and scratch-resistant coating and a preparation method thereof. Background technique [0002] With the development of polymer science and people's demand for lighter products in life, coatings are widely used in various fields of social life to decorate and improve various properties of materials. However, the wear resistance and scratch resistance of many coatings after film formation cannot meet the needs of practical applications. Therefore, fillers are added to improve the wear resistance and scratch resistance of coatings. [0003] In resin-based coatings, inorganic particles are usually added as fillers to make the coating formed after the coating has higher hardness, wear resistance and scratch resistance. However, on the one hand, the inorganic filler has interface incompatibility with the resin, resulting in poor dispersion of the inorganic filler in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D183/04C09D7/20C09D7/62C09D7/63
CPCC09D7/20C09D7/62C09D7/63C09D163/00C08L83/04C08K9/10C08K3/34C08K5/42
Inventor 李明田杨瑞嵩吴猛赵克荣袁力王莹
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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