Durable scrawling-preventive anti-paste paint capable of being repeatedly coated, and preparation method thereof

Abstract

The invention relates to a durable scrawling-preventive anti-paste paint capable of being repeatedly coated, and a preparation method thereof. The urable scrawling-preventive anti-paste paint comprises the following components in parts by weight: 60-70 parts of modified silicon resin, 0.5-2 parts of levelling agent, 0.2-1 parts of non-ionic type active agent, 25-30 parts of rutile type titanium dioxide, 0.2-1 part of defoaming agent, 1-3 parts of surface tension equilibrium catalyst, 0.5-3 parts of nanometer SiO2, 0.2-1 part of dispersing agent, 0-13 parts of curing agent, 3-5 parts of acetic ether, 7-10 parts of n-butyl acetate; the modified silicon resin comprises active ingredients in parts by mass: 70-75 parts of fluorocarbon resin, 13-16 parts of polydimethylsiloxane, 0.5-1 part of coupling agent, 0.3-0.4 part of reaction accelerator, and 8-10 parts of n-butyl acetate. While the better anti-paste effect of the paint can be maintained, the durability can be greatly improved, and the paint has no barriers when being repeatedly coated, and is convenient to repair.

Description

technical field [0001] The invention relates to a coating used for various surface coatings, in particular to a recoatable and durable anti-graffiti anti-sticking coating and a preparation method thereof. Background technique [0002] Existing anti-graffiti paint mainly contains three types: A anti-sticking type; B anti-graffiti type; C anti-sticking and anti-graffiti type. At present, there are mainly types A and C in the market, and most of them are named after type C. Most of the existing coatings are based on fluorocarbon paints. The purpose of increasing the contact angle is to increase the contact angle by adding an appropriate amount of silicon leveling and low surface tension additives, and finally form the lotus leaf effect, but the actual effect is not satisfactory, and The cost is higher, which is not conducive to the popularization and application of the market. The main problem is also due to the recoatability after the surface tension is reduced and the final...

AI Technical Summary

Problems solved by technology

Most of the existing coatings are based on fluorocarbon paints. The purpose of increasing the contact angle is to increase the contact angle by adding an appropriate amount of silicon leveling and low surface tension additives, and finally form the lotus leaf effect, but the actual effect is not satisfactory, and The cost is high, which is not conducive to the promotion and application of the market

The main problem is also due to the recoatability after the surface tension is reduced and the final surface nano-layer does not form an effective covalent structure with the main resin, resulting in poor durability of the coating, which often loses its effect in a short period of time. Then it brings a series of problems such as repair

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