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Self cleaning fluorocarbon resin paint and its preparing method

A fluorocarbon resin, self-cleaning technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as rainwater flow marks, pollution, etc.

Inactive Publication Date: 2010-10-06
鳄鱼制漆(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the phenomenon of rainwater flow marks that are difficult to eliminate with hydrophobic fluorocarbon coatings and the pollution of solvent-based coatings by oily components in urban pollution sources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Put 666g of IPDI and 134g of trimethylolpropane into the reactor, and stir and react at 85°C for 3 hours. Then add 514g of C 4 h 9 -(OCH 2 CH 2 ) 10 OH, the reaction was stirred at 85°C for 2 hours. Then add 5256g of fluorocarbon resin, stir and react at 85°C for 2 hours, cool down to room temperature, and discharge, obtained from clean fluorocarbon resin. Then, the self-cleaning fluorocarbon resin and biuret curing agent were formulated into a two-component coating according to the conventional method. There is no change in the salt spray resistance for 1000 hours.

Embodiment 2

[0026] Put 504g HDI and 93g glycerol into the reaction kettle, stir and react at 75°C for 3.5 hours, then add 692g of CH 3 -(OCH 2 CH 2 ) 15 OH, the reaction was stirred at 70°C for 3 hours. Then add 6445g of fluorocarbon resin, stir and react at 85°C for 3 hours, cool down to room temperature, and discharge, obtained from clean fluorocarbon resin. Then, the self-cleaning fluorocarbon resin and isophorone diisocyanate (IPDI) prepolymerized resin curing agent were formulated into a two-component coating according to the conventional method. The coating film obtained after construction had a water contact angle of 30° and an adhesion level of There is no change in aging resistance for 5000 hours, and no change in salt spray resistance for 1000 hours.

Embodiment 3

[0028] Put 522g of TDI and 134g of trimethylolpropane into the reactor and stir the reaction at 75°C for 4 hours, then add 954g of C4H9-(OCH 2 CH 2 ) 20 OH, stirred and reacted at 75°C for 2.5 hours, then added 8050g of fluorocarbon resin, stirred and reacted at 80°C for 3.5 hours, cooled to room temperature, and discharged, obtained from clean fluorocarbon resin. Then, the self-cleaning fluorocarbon resin was formulated into a one-component coating according to the conventional method. The coating film obtained after construction had a contact angle of 25° to water, a level of adhesion, no change in aging resistance for 5000 hours, and no change in salt spray resistance for 1000 hours. Variety.

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Abstract

The present invention relates to a kind of self-cleaning fluorocarbon resin paint and its preparation process. The preparation process includes the following steps: reaction between diisocyanate and tribasic alcohol to certain degree, adding polyglycol monoether to react to obtain branching modified diisocyanate, and reaction between the modified diisocyanate and fluorocarbon resin to introduce hydrophilic molecular radical and obtain self-cleaning fluorocarbon resin. The self-cleaning fluorocarbon resin is further compounded into paint through a conventional process. After being painted, thehydrophilic molecular radical immigrates to the surface of the coating to form hydrophilic surface with self-cleaning function while the fluorocarbon resin forms compact film in the bottom to avoid water and pollutant permeation. The present invention can eliminate current mark and oily component pollution.

Description

technical field [0001] The invention belongs to the technical field of paint self-cleaning paint, in particular to a self-cleaning fluorocarbon resin paint and a preparation method thereof. Background technique [0002] Fluorocarbon coating is a collective name for a series of coatings with fluorine-containing resin as the main film-forming substance. It is a new type of coating material modified and processed on the basis of fluorine resin. Its main feature is that the resin contains a large amount of The F-C bond has a bond energy of 116 kal / mol, ranking first among all chemical bonds. Under the action of heat and light (including ultraviolet rays), the F-C bond is difficult to break, so it shows super weather resistance and chemical medium corrosion resistance, so its stability is the best among all resin coatings. As a high-tech functional coating and a brand-new surface decoration and protection material, its weather resistance, chemical corrosion resistance and many o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/12C09D175/04
Inventor 韩冬吕侠卢斯亮李艳萍
Owner 鳄鱼制漆(上海)有限公司