POLYETHYLENE TOUGHENED BY CACO3 PARTICLES - THE INTERFACE BEHAVIOR AND FRACTURE MECHANISM IN HIGH-DENSITY POLYETHYLENE/CACO3 BLENDS

被引:48
|
作者
FU, Q
WANG, GH
LIU, CX
机构
[1] Department of Polymer Science and Materials, Chengdu University of Science and Technology, Chengdu
基金
中国国家自然科学基金;
关键词
CORE SHELL MORPHOLOGY; HDPE CACO3 BLENDS; FRACTURE MECHANISM;
D O I
10.1016/0032-3861(95)97339-H
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Tensile behaviour and impact force-time curves of high density polyethylene/CaCO3 blends have been investigated. The results showed that there may exist a flexible interfacial area with lower stiffness than the matrix. The concept of yielding in the interfacial area was proposed to explain the fracture mechanism of HDPE/CaCO3 blends. Three types of fracture behaviour were assumed to be dependent on the surface-to-surface interparticle distance: (1) cavitation and crazing; (2) coexistence of cavitation and yielding in the interfacial area; (3) interfacial area yielding and matrix yielding. Based on the results, the interface conditions for brittle-ductile transition and core-shell morphology of CaCO3 particles were discussed.
引用
收藏
页码:2397 / 2401
页数:5
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