High-adhesion scratch-resistant wear-resistant polyurethane transparent coating material

A polyurethane coating, high adhesion technology, applied in the field of coatings, can solve the problems of polyurethane coating adhesion and anti-scratch and friction resistance at the same time, to improve the use effect and protection effect, good anti-scratch and wear resistance, particle size small diameter effect

Active Publication Date: 2020-06-19
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a scratch-resistant and wear-resistant polyurethane transparent coating with high adhesion in order to solve the problem that the existing polyurethane coating adhesion and anti-scratch and anti-friction properties cannot be taken into account at the same time

Method used

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  • High-adhesion scratch-resistant wear-resistant polyurethane transparent coating material
  • High-adhesion scratch-resistant wear-resistant polyurethane transparent coating material

Examples

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Effect test

Embodiment 1

[0041] A scratch-resistant and wear-resistant polyurethane transparent coating with high adhesion proposed by the present invention, its raw materials include by weight: 26.57 parts of polyoxytetramethylene glycol (PTMG, molecular weight 650), 1,2,4- 2.08 parts of butanetriol, 0.11 parts of stannous octoate, 1.77 parts of bisphenol A epoxy resin, 0.02 parts of polyether-modified polydimethylsiloxane, 0.22 parts of polyether-modified polyorganosiloxane, nano-titanium dioxide 0.44 parts (particle size is 20nm), 53.14 parts of N,N dimethylformamide, 15.63 parts of isophorone diisocyanate. The soft segment content of the finally obtained polyurethane is 40%.

[0042] The preparation method of the anti-scratch wear-resistant polyurethane transparent coating of above-mentioned high adhesion comprises:

[0043] Step 1: Weigh polypolyols, chain extenders, catalysts, adhesion promoters, leveling agents, wetting agents, sunscreens and solvents according to the above weight fractions, a...

Embodiment 2

[0046] The present invention proposes a high-adhesion anti-scratch and wear-resistant polyurethane transparent coating, and its raw materials include: 27.57 parts of polyoxypropylene glycol (PPG molecular weight 1000), 3.02 parts of 1,2,4-butanetriol by weight percentage , 0.11 parts of dibutyltin dilaurate, 1.70 parts of bisphenol A epoxy resin, 0.02 parts of polyether-modified polydimethylsiloxane, 0.21 parts of polyether-modified polyorganosiloxane, and 0.42 parts of nano-titanium dioxide (Particle size is 20nm), 55.13 parts of N,N dimethylformamide, 11.82 parts of hexamethylene diisocyanate (HDI). The soft segment content of the finally obtained polyurethane was 35%.

Embodiment 3

[0048] The present invention proposes a high-adhesion anti-scratch and wear-resistant polyurethane transparent coating, and its raw materials include: polycarbonate polyol (PCDL, molecular weight 1000) 25.49 parts, 1,2,4-butanetriol 3.01 parts by weight 0.12 parts of triethylamine, 1.85 parts of bisphenol-A epoxy resin, 0.02 parts of polyether-modified polydimethylsiloxane, 0.23 parts of polyether-modified polyorganosiloxane, 0.46 parts of nano-titanium dioxide (grain diameter of 20nm), N,N dimethylformamide 50.97 parts, 4,4'-dicyclohexylmethane diisocyanate (HMDI) 17.84 parts. The soft segment content of the finally obtained polyurethane was 45%.

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Abstract

The invention provides a high-adhesion scratch-resistant wear-resistant polyurethane transparent coating material, and relates to the technical field of coating materials. In the transparent coating material, the content of polyurethane soft segments ranges from 35% to 45%, and the polyurethane coating material is a two-component coating material and comprises a coating material agent A and a coating material agent B, wherein the coating material agent A comprises polyol, a chain extender, a catalyst, an adhesion promoter, a solvent, a leveling agent, a wetting agent and a sun-screening agent,and the coating material agent B is aliphatic diisocyanate. According to the invention, the polyurethane paint film has excellent mechanical properties and good resilience, and can significantly enhance the wear resistance and the scratch resistance of the polyurethane paint film, and after the paint film is scratched, scratches can be automatically repaired as before in a short time, so that theuse effect and protection effect of the product are improved, and good scratch resistance and wear resistance of the product are realized.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a scratch-resistant and wear-resistant polyurethane transparent coating with high adhesion. Background technique [0002] Polyurethane elastomer is a block copolymer with urethane (-NH-COO-) group characteristic group in the molecular main chain, which is composed of oligomer polyol as soft segment, polyisocyanate as hard segment and chain extender. The chemical reactions are connected alternately to form. The special microphase separation and soft and hard two-phase structure endow the polyurethane elastomer with excellent properties that can be flexibly adjusted. [0003] Polyurethane coating is a kind of coating with polyurethane resin as film-forming substance. Polyurethane synthesized by aliphatic diisocyanate does not contain benzene ring, so it will not oxidize and turn yellow under ultraviolet light. It can be used to make transparent and anti-yellowing paint. Polyuret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D175/04C09D175/06C09D5/33C09D5/32C09D7/65
CPCC08K2003/2241C08K2201/011C08L2201/08C08L2201/10C08L2205/025C08L2205/03C09D5/004C09D5/18C09D5/32C09D175/04C09D175/06C09D175/08C09D7/65C08L83/12C08K3/22
Inventor 刘霞赵晓礼丁才军刘鑫鑫杨小牛
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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