摘要
合成了一个新的螺环原碳酸酯单体：３，９二羟甲基３′，９′二己基１，５，７，１１四氧杂螺环［５，５］十一烷．它与ＭＤＩ反应生成了低分子量预聚物，用该预聚物对环氧树脂进行改性，可以减少残留在树脂基体中的环氧基团，表明该预聚物与环氧树脂之间发生了共聚固化反应．基体树脂的Ｔｇ和热稳定性随预聚物加入量的增加而降低，但改性环氧树脂的粘接强度则随预聚物加入量的增加而增加，本文对上述试验观察到的现象进行了讨论．
This paper describes the modification of epoxy resin using a new prepolymer containing spiro orthocarbonate (3,9 dihydroxylmethyl 3′,9′ dihexyl 1,5,7,11 tetraoxa spiro undecane). It was found that the addition of prepolymer into epoxy resin system enhanced the conversion of epoxy groups and that T g and thermal stability of the matrix were slightly reduced. The adhesive tensile and shear strengths of the modified epoxy resin increased obviously as the content of the prepolymer increased. The above observed phenomena were discussed, and the relationship between shrinkage and adhesive strengths was investigated.
出处
《沈阳化工学院学报》
1999年第1期6-11,共6页
Journal of Shenyang Institute of Chemical Technolgy
关键词
改性
环氧树脂
热稳定性
膨胀聚合
聚合
spiro orthocabonate
prepolymer
modified epoxy resin
adhesive strength
thermal stability
