FATIGUE BEHAVIOR OF ACRYLIC INTERPENETRATING POLYMER NETWORKS .2.

被引：15

作者：

HUR, T ^{[1
]}

MANSON, JA ^{[1
]}

HERTZBERG, RW ^{[1
]}

SPERLING, LH ^{[1
]}

机构：

[1] LEHIGH UNIV, DEPT MAT SCI & ENGN, BETHLEHEM, PA 18015 USA

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1990年 / 39卷 / 09期

关键词：

D O I：

10.1002/app.1990.070390909

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Energy‐absorbing simultaneous interpenetrating networks (SINs) based in polyether‐type polyurethanes (PUs) and poly(methyl methacrylate) (PMMA) networks were prepared by a prepolymer procedure. The products are translucent and appear to have single and broad glass transitions, suggesting some degree of phase separation. The percent energy absorption determined from dynamic properties and pendulum impact tests, the resistance to fatigue crack growth and fracture toughness (K1c) all increase with polyurethane content. The fracture behavior changes from brittle to ductile failure with increasing PU. The fatigue fracture surfaces of the SINs show extensive stress whitening associated with cavitation around the polyurethane domains, and localized shear deformation rather than crazing. Copyright © 1990 John Wiley & Sons, Inc.

引用

页码：1933 / 1947

页数：15

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