What is the difference between thermoplastic and thermosetting acrylic resins?

Acrylic resin is a resin made by copolymerization of acrylic esters, methacrylic esters and other olefinic monomers. By selecting different resin structures, different formulas, production processes and solvent compositions, different types and properties can be synthesized Compared with acrylic resins in different applications, acrylic resins can be divided into thermoplastic acrylic resins and thermosetting acrylic resins according to the difference in structure and film-forming mechanism.





The main light absorption peak of the acrylic resin copolymerized by acrylate and methacrylate monomers of thermosetting acrylic resin is outside the solar spectrum range, so the acrylic resin paint prepared has excellent light resistance and outdoor aging resistance. Thermosetting acrylic resins are based on acrylic monomers (methyl acrylate, ethyl acrylate, n-butyl acrylate, methyl methacrylate, n-butyl methacrylate, etc.), which are cross-linked into an insoluble and infusible network structure Acrylic polymer. In addition to the general performance of acrylic resin, it has better heat resistance, water resistance, solvent resistance, and abrasion resistance. There are many forms of casting material, solution type, emulsion type, and water-based type. This type of thermosetting acrylic resin is mainly used as a treatment agent for fabrics, leather, paper, industrial paints and architectural coatings.

Thermoplastic acrylic resin Thermoplastic acrylic resin is a type of thermoplastic resin made by polymerization of acrylic acid, methacrylic acid and their derivatives (such as esters, nitriles, amides). It can be softened by heating and solidified by cooling repeatedly. Generally linear polymer compounds, which can be homopolymers or copolymers, have good physical and mechanical properties, excellent weather resistance, chemical resistance and water resistance, and high gloss and color retention. Thermoplastic acrylic resin is a kind of solvent-based acrylic resin. It can be melted and dissolved in a suitable solvent. The coatings prepared by it are assembled into a film after the solvent volatilizes. There is no cross-linking reaction when the film is formed. It is a non-reactive type. coating. In order to achieve better physical and chemical properties, the molecular weight of the resin should be increased, but in order to ensure that the solid content is not too low, and the molecular weight is not too large, the physical and chemical properties and construction performance are generally balanced at tens of thousands.