A series of the amine-terminated poly-butadiene/amine-terminated butadiene acrylonitrile(ATB/ATBN)samples with the soft segment content from 59% to 82% were prepared on the basis of E-51,ATB,ATBN and triethylenetetramine.The DMA,SEM,strain-stress were used to study properties of the samples at low temperature.The results show that epoxy resin and ATB/ATBN can react in a wide range of proportion,with two phase structure.The Tgof soft segment does not change with soft segment content,but the Tg of hard segmen...