What are the classifications of coating additives? Coating additives are an indispensable component of coatings. They can improve the production process, maintain storage stability, improve construction conditions, improve product quality, and impart special functions. Reasonable and correct selection of additives can reduce costs and improve economic benefits.
Coating additives, also known as paint accessories, are auxiliary materials for formulating coatings, which can improve the performance of coatings and promote the formation of coating films. There are many types, including driers, tougheners, emulsifiers, thickeners, pigment dispersants, defoamers, leveling agents, anti-skinning agents, matting agents, light stabilizers, mildew inhibitors, antistatic agents (see plastic additives), etc., among which the most used are driers and tougheners. At present, the research on coating additives focuses on the additives used in water-based emulsion paints.
The manufacturing stage includes: initiator, dispersant, and transesterification catalyst.
The reaction process includes: defoamer, emulsifier, filter aid, etc.
The storage stage includes: anti-skinning agent, anti-settling agent, thickening agent, thixotropic agent, anti-floating and blooming agent, anti-gelling agent, etc.
The construction stage includes: leveling agent, anti-cratering agent, anti-sagging agent, hammer pattern auxiliary, flow control agent, plasticizer, defoamer, etc.
The film forming stage includes: coalescence aids, adhesion promoters (also called adhesion promoters), photoinitiators, light stabilizers, drying, gloss enhancement, slip enhancement, matting, curing, crosslinking, catalysis and other auxiliary agents .
Endowed with special functions: flame retardant, biocidal, anti-algae, anti-static, electrical conductivity, corrosion inhibition, anti-rust and other additives.
Generally speaking, according to their uses, they include adhesion promoters, anti-blocking agents, anti-cratering agents, anti-flowering agents, anti-floating agents, defoaming agents, anti-foaming agents, anti-gelling agents, viscosity stabilizers, Antioxidant, anti-skinning agent, anti-sagging agent, anti-precipitation agent, antistatic agent, conductivity control agent, mildew inhibitor, preservative, coalescence aid, corrosion inhibitor, rust inhibitor, dispersant, lubricant Wetting agent, drier, flame retardant, flow control agent, hammer grain additive, flow drying agent, matting agent, light stabilizer, photosensitizer, optical brightener, plasticizer, slip agent, anti-scratch Agents, thickeners, thixotropic agents, other auxiliaries.
Coating additives can be divided into oil-based coating additives and water-based coating additives. In line with the increasing emphasis on environmental protection in the world, the development of water-based coating additives has developed by leaps and bounds. There are more and more new environmentally friendly additives. Applications are becoming more and more extensive. It is the mainstream direction of the future development of coating additives.
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