摘要
以甲苯二异氰酸酯 (TDI)、聚异丙二醇 (PPG)、丙烯酸 (AA)、二羟甲基丙酸 (DMPA)为主要原料 ,采用分子设计合成了带有双键的氨基甲酸酯的丙烯酸酯类单体 (U 大单体 ) ,通过红外光谱、核磁共振对U 大单体的结构进行表征。用此PU 大单体与丙烯酸酯类单体进行共聚 ,得到了稳定的乳液 ,其乳液的粘度随PU 大单体含量的增加而增大、其胶膜的玻璃化转变温度则随之下降、热分解温度为 (390± 5 )℃ ;各种配比的聚氨酯 丙烯酸酯 (PUA)共聚乳液涂膜均为透明膜 。
A kind of polymerizable urethane acrylate(U monomer) with double bond was synthesized from 2,4 toluene diisocyanate, PPG1000, acrylate and DMPA. The structure of the U monomer was described by FT IR, NMR. A series of steady emulsions were obtained from copolymerization of the U monomer and acrylate. The viscidity of the emulsions increases with increase of U monomer content, while its T g declines, hot decomposing temperature is (390 ± 5)℃; The films containing different contents of urethane acrylate monomer are transparent and have better mechanical performances.
出处
《聚氨酯工业》
2004年第2期10-13,共4页
Polyurethane Industry
