Service Lifetime Estimation of EPDM Rubber Based on Accelerated Aging Tests

被引：24
|
作者：
Liu, Jie [1 ]
Li, Xiangbo [2 ]
Xu, Likun [2 ]
He, Tao [1 ]
机构：
[1] Yantai Univ, Coll Chem & Chem Engn, Yantai 264005, Peoples R China
[2] LSMRI, State Key Lab Marine Corros & Protect, Qingdao 266101, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2017年 / 26卷 / 04期
关键词：
aging; EPDM; nonlinearity; service lifetime; superposition principle; WEAR-OUT APPROACH; STRESS-RELAXATION; EPR MATERIALS; SEALS; TEMPERATURE; DEGRADATION; ELASTOMERS; EXTRAPOLATION; PREDICTIONS; ARRHENIUS;
D O I：
10.1007/s11665-017-2519-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Service lifetime of ethylene propylene diene monomer (EPDM) rubber at room temperature (25 A degrees C) was estimated based on accelerated aging tests. The study followed sealing stress loss on compressed cylinder samples by compression stress relaxation methods. The results showed that the cylinder samples of EPDM can quickly reach the physical relaxation equilibrium by using the over-compression method. The non-Arrhenius behavior occurred at the lowest aging temperature. A significant linear relationship was observed between compression set values and normalized stress decay results, and the relationship was not related to the ambient temperature of aging. It was estimated that the sealing stress loss in view of practical application would occur after around 86.8 years at 25 A degrees C. The estimations at 25 A degrees C based on the non-Arrhenius behavior were in agreement with compression set data from storage aging tests in natural environment.
引用
收藏
页码：1735 / 1740
页数：6
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