约束条件下天然橡胶硫化胶疲劳现象分析  

Analysis on Fatigue Behavior of Vulcanized Natural Rubber Under Constrained Condition

作　　者：袁远[1] 栗付平[1] 孙霞容[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《材料工程》2013年第7期40-43,49,共5页Journal of Materials Engineering

摘　　要：通过凝胶色谱分析、衰减全反射傅里叶红外光谱分析及气相色谱-质谱联用分析等手段,对天然橡胶硫化胶在约束条件下剪切疲劳的产物进行了研究。结果表明,在一维受压状态下,剪切疲劳过程中橡胶分子链首先主要发生力断裂现象,进而发生氧老化作用,同时疲劳过程中部分低分子量降解产物和游离态填料会向应力集中的部位迁移集聚。The shear fatigue behavior of vulcanized natural rubber （NR） under constrained condition was investigated by Gel Permeation Chromatography（GPC）, Attentuated Total Reflectance-Fourier Transform InfraRed （ATR-FTIR） spectroscopy, and Gas Chromatography-Mass Spectrometry （GC- MS）. The results showed that in the shear fatigue process molecular chains were first broken under one-dimensional compression load, and then oxygen aging occurred. At the same time, some of the low-molecular mass degradation products and free state fillers migrated and agglomerated at the stress concentration regions.

关 键 词：天然橡胶 剪切疲劳 疲劳 

分 类 号：TQ330.14[化学工程—橡胶工业]