摘要
The universal creep equation is successful in relating the creep (ε) to the aging time (te), coefficient of retardation time (β), and intrinsic time (t0). This relation was used to treat the creep experimental data for polyvinyl chloride (PVC) specimens at a given stress and different aging times. The βgs found by the “polynomial fitting” method in this work instead of the “middle-point” method reported in the literature. The unified master line was constructed with the treated data and curves according to the universal equation. The master line can be used to predict the long-term creep behavior and lifetime by extrapolating.
The universal creep equation is successful in relating the creep (ε) to the aging time (t) , coefficient of retardation time (β) , and intrinsic time ( to ). This relation was used to treat the creep experimental data for polyvinyl chloride ( PVC ) specimens at a given stress and different aging times. The βgs found by the “polynomial fitting” method in this work instead of the “middle - point” method reported in the literature. The unified master line was constructed with the treated data and curves according to the universal equation. The master line can be used to predict the long- term creed behavior and lifetime by extrapolating.
基金
Sponsored by the Departmet of Science ad Technology, Government of Heilongjiang Province(Grant No.GC04A407).
关键词
线性推断
氯化聚乙烯
PVC
塑性变形
拉伸力
老化反应
linear extrapolation
prediction
tensile creep compliance
polyvinyl chloride ( PVC )