环氧封端和丙烯酸酯封端聚硫橡胶的合成

SYNTHESIS OF EPOXY AND ACRYLATE TERMINATED POLYSULFIDE

成功地合成了分子量为１２５０、３８００两种环氧封端的聚硫橡胶（ＥＰ－ＬＰ－３、ＥＰ－ＬＰ－２），并提出高分子量环氧封端聚硫（ＥＰ－ＬＰ－２）合成机理。以ＥＰ－ＬＰ为原料，与丙烯酸加成反应，制备相应分子量丙烯酸酯封端的聚硫橡胶（Ａｃｒｙ－ＬＰ－３、Ａｃｒｙ－ＬＰ－２）。用ＮＭＲ、ＩＲ、端基分析等手段对它们进行结构表征。

wo kinds of epoxy terminated liquid polysulfide (EPLP3, EPLP2), whose molecular weight are 1250, 3800 respectively, have been synthesized successfully. The synthesis mechanism of epoxy terminated liquid polysulfide (EPLP2) with high molecular weight has been proposed. Two kinds of acrylate terminated liquid polysulfide (AcryLP3, AcryLP2) with low and high molecular weight respectively have been synthesized by reacting EPLP with acrylic acid. All samples were characterized by NMR, IR, etc.