STRESS-ACCELERATED PHOTOOXIDATION OF POLYPROPYLENE AND GLASS-FIBER-REINFORCED POLYPROPYLENE

被引：49

作者：

ODONNELL, B ^{[1
]}

WHITE, JR ^{[1
]}

机构：

[1] UNIV NEWCASTLE UPON TYNE,DEPT MECH MAT & MFG ENGN,DIV MAT,NEWCASTLE TYNE NE1 7RU,TYNE & WEAR,ENGLAND

来源：

POLYMER DEGRADATION AND STABILITY | 1994年 / 44卷 / 02期

关键词：

D O I：

10.1016/0141-3910(94)90166-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of tensile stress on the rate of photo-oxidation of polypropylene has been investigated. Molecular weight measurements have shown that tensile stress accelerates molecular scission in injection-moulded bars exposed to ultraviolet irradiation. Corresponding to this a small drop in the tensile strength was observed. No change was found in the failure mechanism that could be attributed to the tensile stress present during irradiation. Depth-profiling indicated that the degradation process was oxygen diffusion-limited, The presence of glass-fibre-reinforcement reduced the sensitivity of the material to the application of tensile stress during ultraviolet irradiation.

引用

页码：211 / 222

页数：12

共 18 条

[1] PHOTOOXIDATION OF POLYPROPYLENE UNDER LOAD [J].