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用等曲率弯曲夹具和椭圆弯曲夹具测定了硬聚氯乙烯(R-PVC)和聚甲基丙烯酸甲酯(PMMA)在汽油等五种溶剂类介质中的临界应变值e。。并由此来评价它们的环境应力开裂(ESC)特性。c。与溶解度参数之差有相应关系,但与预应力、预浸泡和试验温度无关。
Equivalent curvature bending fixture and elliptical bending fixture were used to determine the critical strain value e of R-PVC and PMMA in five solvents such as gasoline. . And to evaluate their environmental stress cracking (ESC) characteristics. c. And the solubility parameter has the corresponding relationship, but with prestress, pre-soaking and test temperature has nothing to do.