橡胶增韧塑料机理研究进展

Advance in research on mechanisms for rubber-toughening of plastics

介绍了橡胶增韧塑料机理演进及其与不同链结构基体树脂断裂行为的关系,描述了银纹和裂缝区别,详细地介绍了不同基体树脂的分子链参数与橡胶分散相形态参数的定量关系,同时强调基体树脂的链参数既控制聚合物/橡胶共混物的本征韧性,又决定了橡胶分散相的适宜形态。

The mechanisms for deformation behaviors of rubber-toughened plastics are summarized in terms of their evolution, limitations and relationship with the failure behaviors of glassy polymer matrices. The difference between craze and crack is explained in detail using many experimental evidences in literature. In particular, Souheng Wu＇s quantitative method is systematically explained, which is derived from this yielding- crazing competition theory and reveals the quantitative relationship between molecular chain parameters of the matrices and morphological parameters of the dispersed rubber phase. In addition, Wu＇s view is emphasized that chain parameters of the matrices control the intrinsic brittleness and toughness of both matrix and its blend with rubber, and determine the favorable morphology of rubber phase as well.