摘要
以断裂力学为基础,研究了BR胶料从高应变至低应变较宽广区域的S-N曲线及断裂参数β和c_0,从定性和定量角度解析了BR胶料的疲劳破坏寿命和断裂特性,认为BR胶料在动态疲劳过程中抗裂纹扩展性能较差,与NR并用可显著改善这一性能,其并用比以BR/NR=70/30～60/40(质量比)为宜。
The fatigue curves (S-N curves )under a quite wide range of strain (from higher to lower ) and the fracture parameters β and c0 were studied on the basis of fracture mechanics . The results of quantitative and qualitative analyses of fatigue life and dynamic failure characteristic of BR vulcanizates showed that the speed of crack propagation of BR compounds could be reduced obviously by blending with 30-40 phr NR components , which are favorable to antifatigue property . Fracture parameters (β and c0) of BRvulcanizates are give in Table .Table Fracture parameters of BR/NR vulcanizates
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1992年第4期235-237,共3页
China Synthetic Rubber Industry
关键词
聚丁二烯
橡胶
疲劳
断裂
顺丁橡胶
cis- 1,4-polybutadiene
natural rubber
composite
dynamic fatigue
failure
