摘要
应用断裂力学理论定性和定量地研究了NR和BR/NR(并用比为 70 / 30 )胶料在添加不同炭黑补强体系 (HAF ,ISAF和SAF)时的动态疲劳过程。用分子论观点描述了胶料的动态疲劳过程 ,结合断裂特征参数β和C0 对S N曲线进行了分析比较。结果表明 ,在添加HAF ,ISAF和SAF这 3种补强体系的胶料中 ,随着补强体系粒径的减小 ,其抗裂纹扩展性变差 ,但胶料内部潜在缺陷减少。
The dynamic fatigue process of NR and BR/NR (70/30) compounds with different carbon blacks was qualitively and quantitively investigated by using the rupture mechanism.The dynamic fatigue process of rubber compounds was described based on the molecular theory,and the S N curves were analysed and compared combining with the rupture characteristic parameters β and C 0 .The results showed that for three different rubber compounds reinforced with HAF,ISAF and SAF respectively,the crack growth resistance deteriorated,but the potential defects in rubber compound decreased as the particle size of carbon black reduced.
出处
《橡胶工业》
CAS
北大核心
2000年第10期584-587,共4页
China Rubber Industry
基金
国家自然科学基金!资助项目 (595730 0 2 )
