INTERFACIAL ADHESION AND TOUGHENING MECHANISMS IN AN ALLOY OF POLYCARBONATE POLYETHYLENE

被引：57

作者：

SUE, HJ ^{[1
]}

HUANG, J ^{[1
]}

YEE, AF ^{[1
]}

机构：

[1] UNIV MICHIGAN,DEPT MAT SCI & ENGN,ANN ARBOR,MI 48109

来源：

POLYMER | 1992年 / 33卷 / 22期

基金：

美国国家科学基金会;

关键词：

PC PE BLEND; INTERFACIAL ADHESION; TOUGHENING MECHANISM; CAVITATIONAL STRENGTH; THERMAL STRESS;

D O I：

10.1016/0032-3861(92)90707-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Interfacial adhesion and toughening mechanisms in an alloy of polycarbonate polyethylene (PC/PE) are investigated using transmission electron microscopy. In contrast to the general speculation, it is found that the PE particles strongly adhere to the PC matrix. The toughening mechanisms in the PC/PE blend are found to be debonding of the PC/PE interface, which relieves the triaxial tension in front of the crack tip, followed by shear banding of the PC matrix. Possible causes for such an unexpected strong interfacial adhesion between PC and PE are discussed. Also. the importance of the cavitational strength of the toughener phase in toughness optimization is addressed.

引用

页码：4868 / 4871

页数：4

共 14 条

[1]

BOYCE ME, 1987, POLYMER, V28, P1681

[2]

HOLIK AS, 1979, MICROSTRUCT SCI, V7, P357

[3] THE EFFECT OF STRAIN RATE ON THE TOUGHENING MECHANISMS OF RUBBER-MODIFIED PLASTICS [J].