Thermoplastic Acrylic Resins are a class of thermoplastic resins made by polymerizing acrylic acid, methacrylic acid and derivatives thereof such as esters, nitriles, and amides. It can be repeatedly softened by heat and solidified by cooling. Generally, it is a linear polymer compound, which may be a homopolymer or a copolymer, has good physical and mechanical properties, is excellent in weather resistance, chemical resistance, and water resistance, and has high gloss and color retention. The thermal acrylic resin used in the coating industry generally has a molecular weight of 75 000 to 120 000. It is commonly used in combination with nitrocellulose, cellulose acetate butyrate and perchloroethylene resin to improve the film properties.
The thermoplastic acrylic resin is a kind of solvent-based acrylic resin, which can be melted and dissolved in a suitable solvent. The coating prepared by the solvent is evaporated by the solvent and the macromolecule is aggregated into a film, and no crosslinking reaction occurs during film formation, which is a non-reactive type. coating. In order to achieve better physical and chemical properties, the molecular weight of the resin should be made larger, but in order to ensure that the solid content is not too low, the molecular weight can not be too large, generally at tens of thousands of times, the physical and chemical properties and construction performance are relatively balanced.
Post time: Nov-01-2006