Prediction of long-term creep behavior and lifetime of PPC pipe materials by linear extrapolation

被引：0
|
作者：
胡立江
刘志刚
机构：
来源：
Journal of Harbin Institute of Technology | 2002年 / 02期
关键词：
polypropylene block copolymer (PPC); prediction; creep; lifetime; universal function; united master line;
D O I：
暂无
中图分类号：
TQ325 [聚合类树脂及塑料];
学科分类号：
0805 ; 080502 ;
摘要：
The universal creep equation relates creep behavior (ε/ε 0) to aging time (t a), coefficient of retardation time (β), and intrinsic time (t 0). The relation was used to treat the creep experimental data for pipe specimens of polypropylene block copolymer (PPC), which were aged for different days (short term) and tested under different stress levels at a certain temperature. Then unified master lines were constructed with the treated data and curves according to the universal equation. The master straight lines can be used for extrapolation to predict the long term creep behavior and lifetime of the pipe materials of PPC in the same way as plate materials.
引用
收藏
页码：170 / 175
页数：6
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