摘要
:以对苯二甲醛 (TPA)和对苯二胺 (PDA)为原料在环氧树脂基体中原位聚合聚甲亚胺 (PAM) ,得到了 PAM分散良好的改性环氧树脂体系。用红外光谱、紫外光谱对原位聚合的结果进行了表征 ,并用 GPC测定了原位聚合生成的 PAM的分子量。以三乙烯四胺 (TETA)固化原位聚合 PAM改性的环氧树脂 ,原位聚合过程中未加稀释剂的改性体系的力学性能变化不明显 ;原位聚合过程中加有稀释剂 (E6 0 0 )的 PAM/ EP/ E6 0 0 =8/ 10 0 / 15体系 ,其拉伸模量与弯曲模量可提高 6 0 % ,拉伸强度和弯曲强度可提高 40 % ,而且冲击强度和断裂韧性也分别可提高 40 %及10 0 % ,另外 ,它的玻璃化温度可提高近 40℃ 。
In this paper, polyazomethine(PAM) was formed and dispersed well in the matrix of epoxy resin by means of in situ polymerization. The results of in situ polymerization were inspected by IR and Ultra violet spectrum. Molecular weight of PAM formed by in situ polymerization was measured by GPC. Compared with epoxy resin which was not modified, mechanical properties of EP/PAM cured by triethyltetramine(TETA) changes only a little when E600 is not added during in situ polymerization. While strength and modulus of cured EP/E600/PAM/TETA=100/15/8/15 can be improved to 140% and 160% separately, impact strength and fracture toughness be improved to 140% and 200%. In addition, its T g can be raised nearly 40 , its dynamic mechanical properties can be improved as well.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2000年第5期71-74,共4页
Polymer Materials Science & Engineering
