论文部分内容阅读
以DSC、TRLS和SEM等方法研究了固化剂DDS用量对苯端基聚醚酰亚胺(P-PEI)改性4,4′-二氨基二苯甲烷四缩水甘油环氧树脂(TGDDM)体系的固化速率及相结构的影响.结果表明,20phrP-PEI改性环氧体系在150℃固化时,随DDS量增加,固化反应速率增大,相分离时间提前,形成了不同的相结构,解释了DDS量对粘接剪切强度的影响.
The amount of curing agent DDS was studied by means of DSC, TRLS and SEM. The effects of the amount of curing agent on the content of benzene-terminated polyetherimide (P-PEI) modified 4,4’-diaminodiphenylmethane tetraglycidyl epoxy resin (TGDDM) The curing rate and phase structure of the impact. The results showed that the curing reaction rate of 20phrP-PEI modified epoxy system increased with the increase of the amount of DDS at 150 ℃, and the phase separation time advanced. Different phase structures were formed. The influence of DDS content on the bond shear strength Impact.