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	橡胶工业 CHINA RUBBER INDUSTRY 2000 Vol.47 No.1 P.3-8

几种防老剂的BR/NR并用胶疲劳破坏和断裂参数及寿命预测

郭景学　刘毓真　范新刚　傅政　

摘　要：以拉伸疲劳实验为基础，研究了几种防老剂的BR/NR并用胶拉伸疲劳性能、高应变与低应变范围内胶料动态疲劳破坏性能及断裂参数(β),用数学回归处理,预测了拉伸比(γ)与疲劳寿命的关系,其结果与实验结果基本相附。通过疲劳断裂界面状态分析了断裂过程的特点。实验结果表明，胺类防老剂可有效地提高胶料的疲劳寿命。
关键词：BR；NR；并用胶料；疲劳破坏；断裂特性；寿命预测
分类号：TQ330.38⁺3;TQ332;TQ333.2　文献标识码：A
文章编号：1000-890X(2000)01-0003-06

Fatigue failure,rupture parameter β and life expectancy of BR/NR blend with various antioxidants

GUO Jing-xue ,LIU Yu-zhen ,FAN Xin-gang ,FU Zheng
(Qingdao Institute of Chemical Technology,Qingdao 266042)

Abstract：The tension fatigue property,dynamic fatigue failure property at high or low strain and rupture parameter β of BR/NR blend with various antioxidants were determined by test to obtain a regressive equation which could be used to predict the fatigue life with any tension ratio γ.It was found that the predictive fatigue life was basically in accordance with the measured one.The characteristics in rupure process on ruptured cross-section was analysed.The test results showed that the amine-type antioxidants were effective to improve the fatigue life of BR/NR blend.
Keywords：BR;NR;blend;fatigue failure;rupture characteristics;life expectancy

基金项目：国家自然科学基金资助项目(59573002)
作者简介：郭景学(1966-),男,河南遂平人,齐鲁石油化工公司橡胶厂工程师,硕士,主要从事合成橡胶的生产与管理工作。
作者单位：郭景学（青岛化工学院橡胶工程学，山东青岛 266042）　
　　　　　刘毓真（青岛化工学院橡胶工程学，山东青岛 266042）　
　　　　　范新刚（青岛化工学院橡胶工程学，山东青岛 266042）　
　　　　　傅政（青岛化工学院橡胶工程学，山东青岛 266042）　

参考文献：

［1］Barmard D,Lewis P M.Natural rubber science and technology[M].London:Oxford Science Publish,1988.621
［2］Chudnovsky A,Moet A.On the law of fatigue crack layer propagation in polymers[J].Polymer Engineering and Science,1982,22(15):922
［3］Bohatka T J,Moet A.Crack layer analysis of fatigue crack propagation in ABS polymer[J].Journal of Material Science,1995,30(18):4 669.
［4］Haglan,Moet A.The resistance of rubber compounds to brittle crack propagation[J].Rubber Chem.and Technol.,1989,62(1):98
［5］Hamed G R.Molecular aspects of the fatigue and fracture of rubber[J].Rubber Chem.and Technol.,1994,6793):529
［6］Kim S G.Lee S H.Effect of crosslink structures on the fracture crack growth behavior of NR vulcanizates with various aging conditions.Rubber Chem.and Technol[J].,1994,67(4):649
［7］Lee B L,Lim D S,Chawla M,et al.Fatigue of cord-rubber composites[J].Rubber Chem.and Technol.,1994,67(5):761
［8］深琚美英.ェテヌトヌタ疲劳寿命予测[J].日本协会志,1985,58(10):625

收稿日期：1999-07-15

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