Elastic fluorocarbon silver paint and preparation method thereof and use method

Abstract

The invention relates to elastic fluorocarbon silver powder lacquer. Main lacquer is prepared from the following components in weight percentage: 70 to 85 percent of fluoroesin, 3 to 5 percent of 20 percent of CAB551-0.2, 0.3 to 0.5 percent of a dispersant, 0.4 to 0.6 percent of an antisettle agent, 0.3 to 0.5 percent of a levelling agent, 0 to 3 percent of flatting powder, 0.4 to 0.8 percent of wax powder, 7 to 10 percent of a nonfloating type aluminum silver slurry, 7 to 10 percent of xylene and 18 to 25 percent of a mixed solvent; the fluoroesin is a copolymer of tetrafluoroethylene or vinyl monomers or a copolymer of chlorotrifluoroethylene or vinyl monomers; a curing agent of the lacquer is formed by mixing the following components in weight percentage: 90 percent of an elastic HDI curing agent and 10 percent of anhydrous butyl acetate; and the weight ratio of the main lacquer to the curing agent is based on the content of the hydroxyl value of the fluoroesin and the NCO content of the curing agent of 1 to (1.05-1.15). The elastic fluorocarbon silver powder lacquer has outstanding weather resistance, excellent anti-staining performance, scrubbing resistance and decorating property and the like; the lacquer has good room-temperature and low-temperature elasticity, can resist fine cracks, prevent cracks on the surface of a coating layer caused by the fine cracks on a putty layer and can be also used as surface lacquer of a complete anti-cracking aluminum-like plate fluorocarbon painting system.

Description

technical field [0001] The invention relates to a two-component elastic fluorocarbon silver powder paint for building exterior walls and its preparation and use methods. Background technique [0002] In recent years, the normal temperature cross-linked fluorocarbon paint technology and its construction technology have developed rapidly, and the market application, especially the fluorocarbon silver powder paint imitation aluminum plate coating, has become more and more widespread. Carbon paint research and development, production and construction enterprises, in order to solve this problem, the main method currently adopted is to use two-component flexible putty and various fiber mesh cloth to prevent cracking of the putty layer, but because the putty layer is generally thick, it will cause cracking. The reasons for this are complex and difficult to completely avoid. Contents of the invention [0003] The technical problem to be solved by the present invention is to pr...

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Problems solved by technology

[0002]In recent years, the normal temperature cross-linked fluorocarbon paint technology and its construction technology have developed rapidly, and the market application, especially the fluorocarbon silver powder paint imitation aluminum plate coating, has become more and more widespread. The cracking phenomenon of the imitation aluminum plate coating caused by various reasons has been plagued by fluorocarbon paint research and development, production and construction enterprises. In order to solve this problem, the main method currently adopted is to use two-component flexible putty and various fiber mesh cloth to prevent The putty layer cracks, but because the putty layer is generally thicker, the reasons for the cracking phenomenon are more complicated, and it is difficult to completely avoid

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