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Acrylic
Acrylic resin generally refers to acrylic acid, which is the general term for acrylic acid, methacrylic acid and their derivative polymers.
Divided by the type of chemical reaction, it can be divided into two major categories: thermoplastic and thermosetting com" href="">coatings online coatingol.
The thermoplastic acrylic resin does not undergo further crosslinking during the film forming process, so its relative molecular weight is relatively large, has good gloss and color retention, water and chemical resistance, fast drying, convenient construction, easy to recoat and rework, and prepare The whiteness and positioning of the aluminum powder are good when it is painted with aluminum powder.
Thermosetting acrylic resin refers to a certain functional group in the structure, and forms a network structure by reacting with the functional groups in amino resin, epoxy resin, polyurethane, etc.
Divided according to the types of coatings applied, acrylic resins appear in solvent-based paints, water-based paints, and powder coatings.
In solvent-based paints, it is not only the main variety of weather-resistant outdoor coatings, but also used to modify other resin paints to improve weather resistance, especially automotive topcoats and topcoat varnishes.
Among water-dispersible paints, acrylic emulsions are also unique.
But on the other hand, among the functional additives of powder coatings, acrylic resin is unmatched by other resins.
Acrylic resin for matting powder coatings
Powder coating is a new type of solvent-free coating developed in the 1950s.
There are generally several methods for the extinction of powder coatings as follows:
a.
The powder coating does not contain solvent or water, which will cause the original wax powder and gas silicon to fail to produce sufficient matting effect.
b.
In order to make up for the defect of migration, there are other possibilities: two systems are used to complete the curing, one initially produces the effect of gel, and the other shrinks to destroy the gel surface.
