Polyvinyl alcoholPolyvinyl acetate, the most widely used vinyl ester, is noted for its adhesion to substrates and high cold flow. Polyvinyl acetate serves as the precursor for polyvinyl alcohol and, directly or
Polyvinyl acetate and polyvinyl alcohol Polyvinyl acetate(PVA) andpolyvinyl alcohol(PVOH) are further examples of ethylenecopolymers.PVAis used as an emulsion adhesive for bag, sack and carton making.PVOHis produced by hydrolysis of PVA and the stronghydrogen bondingimparted by the –OH groups means...
: a synthetic polymer that has the chemical structure H(CH2CHOOCCH3)nH and that is used especially in adhesives, coatings for paper and textiles, and in the production of polyvinyl alcohol With a sponge brush apply a thin coat of polyvinyl acetate glue to the front of each heart and ...
In contrast to most other vinyl polymers, polyvinyl alcohol can be prepared by polymerization of the corresponding monomer, vinyl alcohol. Moreover, we can prepare this substance by the hydrolysis of polyvinyl acetate or using vinyl ester-derived polymers and formate or chloroacetate (instead of ac...
It is manufactured by hydrolyzing polyvinyl acetate and replacing the acetate groups with hydroxyl groups. PVA is often a white or colorless material that dissolves easily in water to generate a viscous solution. Its structure has both crystalline and amorphous parts, giving it semi-crystalline ...
polyvinyl acetate 英[ˌpɔliˈvainil ˈæsiˌteit]美[ˌpɑliˈvaɪnəl ˈæsɪˌtet]释义 常用 牛津词典 n. 多乙酸乙烯酯;聚醋酸乙烯;聚乙酸乙烯酯; 双语例句 全部 1. Polyvinyl acetate emulsion was synthesized by semi - continuous emulsion polymerization method. 采用半...
more other ethylenically unsaturated monomers, and aqueous based poly(vinyl alcohol)-containing emulsion copolymers formed by emulsion copolymerization of vinyl ethylene carbonate, vinyl acetate, and optionally one or more other ethylenically unsaturated monomer, in the presence of poly(vinyl alcohol). ...
polyvinyl acetate 美 英 un.聚醋酸乙烯酯;聚醋酸乙烯脂 英汉 网络释义 un. 1. 聚醋酸乙烯酯 2. 聚醋酸乙烯脂 例句 释义: 全部,聚醋酸乙烯酯,聚醋酸乙烯脂
The feasibility of the application ofpolyvinyl alcohol( PVA ) to printed wiring board was studied. 研究了PVA在电路板印刷的应用可行性. 互联网 The polyvinyl acetate andpolyvinyl alcoholused are ideal restoring materials obtained by numberless screening. ...
The meaning of POLYVINYL ALCOHOL is a colorless synthetic polymer that has the chemical structure H(CH2CHOH)nH and that is used especially in adhesives, films, and fibers, and in biomedical applications especially as hydrogels —called also PVA. How to u