用化学滴定、粘度测定等方法,研究了环氧树脂固化剂(T-31)用量对聚醚型聚氨酯改性双酚A型环氧树脂(PUDGEBA)/聚苯乙烯(PSt)室温同步IPNs体系固化动力学行为的影响.研究结果表明,增加T-31的用量,可以大大地缩短上述体系的凝胶时间.两个网络固化速度的峰值相对位置未改变.苯乙烯的固化受扩散控制,反应级数为2.0级;PUDGEBA的固化为自动催化机理,反应级数为3.0级.
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