新型螺环单体的合成及其对环氧树脂的改性研究  

Syntheses of Prepolymer Containing Spiro Orthocarbonate and Its Copolymerization with Epoxy Resin

作　　者：闵庆祝[1] 王长松[1] 

机构地区：[1]沈阳化工学院,辽宁沈阳110142

出　　处：《沈阳化工学院学报》2008年第4期327-330,共4页Journal of Shenyang Institute of Chemical Technolgy

摘　　要：利用3-甲硫基丙醛与甲醛在碱性条件下所发生的坎尼扎罗反应合成新的三元醇:2,2-二羟甲基-3甲硫基丙醇,进而合成新的螺环原碳酸酯化合物:3,9-二羟甲基-3’,9’二乙硫基-1,5,7,11-四氧杂螺环[5.5]十一烷,通过红外光谱、核磁共振氢谱和元素分析表征其结构.在三氟化硼单乙胺络合物的催化作用下,该化合物能够进行阳离子开环聚合反应.用膨胀计法跟踪测试了在聚合反应过程中该化合物的体积膨胀率约为4.05%.并且合成了该化合物与TDI反应生成的预聚物,研究了该预聚物与环氧树脂的共聚固化反应,对共聚过程中的反应历程进行初步探讨,并测试了其改性效应.The synthesis of a new spiro orthocarbonate 3,9-dihydroxymethy- 3＇, 9＇-diethylthio-1,5,7, 11-tetraoxaspiro[5.5] undecane was reported. Its prepolymer with TDI （toluene-2,4-diisocyanate） was prepared. Their structures were confirmed by proton NMR and IR data. And its expansion rate was determined by dilatometer. The curing reactions of epoxy resin with or without the prepolymer were monitored by differential scanning calometer and IR spectroscopy. It was found that DSC curves is shifted to a higher position when the prepolymer is added. The mechanism of curing reaction was discussed. The modification effect of prepolymer on epoxy resin was measured.

关 键 词：螺环原碳酸酯 预聚物 阳离子开环聚合反应 环氧树脂 

分 类 号：O631[理学—高分子化学]