Application and function of main raw materials of architectural coatings

Most of the emulsions used in architectural coatings are non-crosslinked thermoplastic emulsions. Usually classified according to its monomer composition. The main varieties are:

①Vinyl acetate-ethylene copolymer emulsion (VAE emulsion);

②Vinyl acetate-vinyl tertiary carbonate copolymer emulsion (tertiary vinegar emulsion);

③Vinyl acetate-acrylate copolymer emulsion (vinegar-acrylic emulsion, ethylene-propylene emulsion);

④Pure acrylate copolymer emulsion (pure acrylic emulsion);

⑤ Styrene-acrylate copolymer emulsion (styrene-acrylic emulsion);

⑥Silicone-acrylate copolymer emulsion (silicone acrylic emulsion);

⑦Fluorocarbon emulsion.

In addition to thermoplastic emulsions, room temperature crosslinking emulsions have also appeared in recent years, such as pure acrylic self-crosslinking emulsions containing crosslinking monomer N-methylol acrylamide, room temperature crosslinking emulsions crosslinked by metal ions, and "Escape type" room temperature crosslinked emulsion that crosslinks by evaporation of water. In many emulsion varieties, different polymerization methods result in different emulsion properties. In addition to the general drip polymerization process, there are soap-free emulsion polymerization, interpenetrating network emulsion polymerization, core-shell emulsion polymerization and so on. The more commonly used are styrene-acrylic emulsion, pure acrylic emulsion, ethylene-propylene emulsion, silicone-acrylic emulsion and so on.

What are the basic properties of emulsions?

The basic properties of emulsion include colloidal properties and coating film properties. The colloidal properties are mainly related to the paint blending adaptability and coating performance, while the coating film properties are mainly related to some physical and chemical properties of the coating film