Thermal Aging Behaviors of Weather Resistant Rubber Composites of EPDM, IIR, and BIIR

被引：9
|
作者：
Choi, Sung-Seen [1 ]
Kim, Jong-Chul [1 ]
机构：
[1] Sejong Univ, Dept Chem, 98 Gunja Dong, Seoul 143747, South Korea
来源：
ELASTOMERS AND COMPOSITES | 2012年 / 47卷 / 02期
关键词：
thermal aging; EPDM; IIR; BIIR; crosslink density change; activation energy;
D O I：
10.7473/EC.2012.47.2.148
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
EPDM, IIR, and BIIR composites were thermally aged and the crosslink density changes were investigated. Crosslink densities of the EPDM composite increased with increasing the aging time and temperature, whereas those of IIR and BIIR composites for long-term aging at high temperatures tended to decrease. Activation energies for the crosslink density changes of the EPDM composite were higher than those of the BIIR one. The experimental results were explained with the number of allylic hydrogens, activation of the zinc complex, the steric hindrance effect, and oxidation of rubber chain.
引用
收藏
页码：148 / 155
页数：8
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