β晶型聚丙烯塑性形变过程中的形态变化  

STUDY ON TRANSFORMATION OF MORPHOLOGY DURING PLASTIC DEFORMATION FOR β- FORM POLYPROPYLENE

作　　者：沈静姝[1] 任宏燕[1] 况勋 史观一[1] 

机构地区：[1]中国科学院化学研究所高分子物理开放实验室,中国科学院上海有机所

出　　处：《高分子学报》1994年第6期749-752,共4页Acta Polymerica Sinica

基　　金：国家基础性重大关键项目

摘　　要：β晶型聚丙烯塑性形变过程中的形态变化沈静姝，任宏燕，况勋（中国科学院化学研究所高分子物理开放实验室，北京，１０００８０）史观一（中国科学院上海有机所，上海，２０００３２）关键词β晶型聚丙烯，塑性形变，形态全同立构聚丙烯的分子链都是３；螺旋链，但其晶体...orphology transformation during stretching is investigated by SEM forβ-form polypropylene sheets at room temperatere and at low elongation rate.When stress whining or even yielding in specimen has occured, the β-formspherulites did not obviously change,but a lot of crazes and microcracks insidespherulites have developed Perpendicular to the stretching direction.As perfect neckis formed at 60% of drawing strain and microfibrillar structure is created. Thespherulites is broken by interlamellar sliPPage and rotation at stretehing direction.

关 键 词：聚丙烯 塑性形变 形态变化 

分 类 号：O632.12[理学—高分子化学]