Anti-crack foundry coating

Abstract

Anti-crack foundry coating is prepared from the following raw materials in parts by weight: 7-10 parts of phenolic resin, 3-8 parts of mildew preventive, 5-7 parts of glyoxal, 8-11 parts of dibutyl phthalate, 3-7 parts of chlorinated rubber, 4-7 parts of n-butyl alcohol, 1-3 parts of zinc oxide, 15-22 parts of emery powder, 2-5 parts of sodium borate, 6-9 parts of nano attapulgite, 5-8 parts of nanoscale titanium dioxide, 3-6 parts of talcum powder and 6-12 parts of hemihydrate gypsum. The foundry coating has the benefits that the foundry coating has good high-temperature resistance and a good anti-crack effect and is convenient to construct.

Description

technical field [0001] The invention relates to a crack-resistant casting coating, which belongs to the field of coatings. Background technique [0002] Most of the traditional casting coatings are in the form of water-based liquid, alcohol-based liquid or paste, which brings a lot of inconvenience to transportation and trial use, and has the following performance requirements, that is, the coating should have good wettability and hangability , good high temperature crack resistance and high temperature strength and good high temperature air permeability. However, the existing coatings cannot meet the requirements for use, and have the disadvantages of poor crack resistance and difficult peeling off. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the problem to be solved by the present invention is to provide a casting coating which has good high temperature resistance, good anti-cracking effect and convenient construction. [0004] In or...

AI Technical Summary

Problems solved by technology

However, the existing coatings cannot meet the requirements of use, and have the disadvantages of poor crack resistance and not easy to peel off