Anti-paste and anti-graffiti fluorocarbon coating and use method thereof

Abstract

The invention relates to an anti-paste and anti-graffiti fluorocarbon coating which is prepared by mixing a component A and a component B in a proportion of OH / NCO=1:(1.0-1.1), wherein the component A comprises the following components in percentage by weight: 50-65 percent of FEVE fluororesin, 1-3 percent of modified polydimethylsiloxane resin containing hydroxide radicals, 8-15 percent of butylacetate, 15-25 percent of propylene glycol methyl ether acetate, 0.2-0.4 percent of defoaming agent and 0.1-0.3 percent of flatting agent; and the component B is prepared by mixing 80 parts of IPDI isocyanate curing agent or GDI multifunctional isocyanate curing agent by weight and 20 parts of anhydrous butyl acetate by weight. The coating has high film crosslinking density and hardness, low surface tension, extremely strong permeability resistance and excellent anti-paste and anti-graffiti performance, and intractable oil pen graffiti can also be easily and completely wiped out. The coating also has excellent wear-resistant, scouring resistant and weather resistant properties and is suitable for long-term outdoor use. The coating can be painted and can also be sprayed after being dilutedby adding 10-20 percent of PMA or polyurethane coating diluent.

Description

technical field [0001] The invention relates to a coating, in particular to a composition of an anti-sticking and anti-graffiti coating and a method for using the same. Background technique [0002] All kinds of buildings and structures, especially public places, have been plagued by various small advertisements and graffiti for a long time, affecting the appearance of the city. In order to solve this problem, people have adopted various methods and invented various coatings to be coated on the surfaces of these buildings or structures, hoping to achieve the purpose of anti-sticking and anti-graffiti, and achieved certain effects. Most of these coatings are made by compounding organosiloxane or mineral oil and other materials by using the non-stick properties of organic silicon or mineral oil, such as water-based anti-graffiti coatings with water-based fluorosilicone emulsion as film-formers, acrylic siloxane Anti-graffiti coatings, mineral oil anti-graffiti coatings, silic...

AI Technical Summary

Problems solved by technology

There are two types of these anti-graffiti coatings. First, the active ingredients of anti-graffiti are only physically mixed with other ingredients in the paint film. The function is reduced or even disappeared, and the shortcomings of dust adhesion due to the free distribution of active ingredients on the surface of the paint film

Second, the active ingredients of the anti-graffiti and other ingredients have undergone chemical cross-linking in the paint film, such as siloxane-modified acrylic polyurethane anti-graffiti coatings, which will not be wiped off due to free distribution on the surface, resulting in the reduction or even disappearance of the anti-graffiti function , they have good anti-sticking and anti-graffiti functions, and also have good anti-graffiti effect on general oil-based pens, but it is difficult to completely wipe off some stubborn oil-based pen graffiti even with alcohol, and there will always be some obvious Mark of

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