The influence of various types of paint thickeners on latex paint, how should we mix

Original: The influence of various types of paint thickeners on latex paint, how should we mix

With the increasing concern of human beings for energy and the environment, countries around the world have successively carried out strict control over VOCs (volatile organic solvents) in coatings, and the development and application of waterborne coatings with environmental protection properties have undoubtedly become a hot spot

Latex paint blended using a paint thickener

Latex paint is mainly composed of emulsion, pigment filler, water, additives, it uses water as a dispersion medium, although it can greatly reduce the VOC in the paint, but usually the viscosity is low, rheology is very poor

There are many types of coating thickeners, mainly cellulose ethers and their derivatives, alkali swelling coating thickeners (ASE and HASE) and polyurethane coating thickeners (HEUR

Paint thickeners are used in emulsion paints

The use of a type of paint thickener alone, the comprehensive performance obtained is not ideal, such as a separate use of a cellulose, its rheology is not very good, the smell of opening the can is relatively large; Or when adding synthetic paint thickeners alone, its advantages and disadvantages are obvious, the latex paint formulated with it has excellent rheology, can be pulled into a very fine silk continuously, and the brush resistance is particularly strong (this is contrary to the conclusion that the durability of alkali dissolved or swelling paint thickeners reported by Yang Qun and others will decrease), but the splashing process is particularly serious and the subsequent thickening effect is also very serious

The above four types of paint thickeners are used as two pairs of composites, and their effects on the properties of emulsion paints: after the combination of natural paint thickeners and synthetic paint thickeners, its comprehensive performance is greatly improved

Summary:

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2, synthetic paint thickener to be used in conjunction with cellulose, generally there are at least two or more kinds of paint thickener composition

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Source of the article: The article is from "China Federal Thickener", please indicate the source when

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