Polyvinyl acetate (PVAC), also known as polyvinyl acetate. It is a polymer of vinyl acetate (vinyl acetate) with the chemical formula (C4H6O2)n. It is a colorless viscous liquid or light yellow transparent glassy particles, soluble in solvents such as benzene, acetone and chloroform. Vinyl acetate, the raw material used in PVAc emulsion, is one of the fifty most produced chemical raw materials in the world and is also the cheapest polymer monomer.
China's vinyl acetate output ranks among the top in the world. At present, more than 80% of the domestic vinyl acetate is used in the production of vinylon and polyvinyl alcohol. At the same time, downstream products such as PVAc emulsion, polyvinyl acetal and other copolymers are derived. At present, the domestic production of PVAc emulsion is more than 1 million tons.
The application fields of PVAc emulsion are very wide:
1. Construction industry, can be used for interior wall decorative coatings, colorful coatings, etc. It is also used for cement modification to improve the tensile strength, adhesion and chemical stability of cement mortar or concrete, and to prevent cracking, etc.
2. In the building materials industry, adhesive glue can be produced, such as woodworking glue, white latex, furniture glue, super glue, etc.
3. Paper industry, can be used as adhesive, impregnating agent, rewetting adhesive,
4. Packaging printing, can be used for plastic-plastic bonding, aluminum-plastic bonding, and post-processing of printed paper products
In addition, it has certain applications in textile printing and dyeing, fiberglass processing, and biomedicine.
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