DADC/VAc共聚物的合成及性能

Synthesis and Properties of DADC/VAc Copolymers

经 IR、1 H-NMR和元素分析等证实一缩二乙二醇双烯丙基碳酸酯 (DADC)与乙酸乙烯酯 (VAc)发生了共聚合反应 ,测定了共聚物组成对树脂浇铸体力学性能的影响。结果表明 :DADC/VAc树脂浇铸体加工性能良好 ,冲击强度和弯曲强度都比 DADC均聚物高 ,共聚物固化反应表观活化能为 93 .8k J/

By means of IR, NMR and elemental analysis etc., it is proved that the copolymerization of diethylene glycol bis(allyl carbonate) (DADC) and vinyl acetate (VAc) has been taken place. Effects of the compositions of copolymers on the mechanical properties of the resin castings were determined. The results show that DADC/VAc resin castings have a good processibility, their toughness and flexural strength are better than those of DADC homopolymer, and the apparent activation energy of the copolymerization obtained by Kissinger equation is 93.8 kJ/mol.