| 热氧老化对特种氟橡胶交联结构及力学性能的影响 |
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| 引用本文： | 张录平,付建农,庞明磊,李晖,王湘明.热氧老化对特种氟橡胶交联结构及力学性能的影响[J].弹性体,2010,20(4). |
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| 作者姓名： | 张录平 付建农 庞明磊 李晖 王湘明 |
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| 作者单位： | 中国兵器工业集团第五三研究所 |
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| 基金项目： | 国防军工环境试验与观测重点项目 |
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| 摘 要： | 采用加速老化实验方法对特种氟橡胶密封材料的热氧老化性能进行了研究,获得了不同老化温度及老化时间对特种氟橡胶力学性能和交联结构的影响规律。研究结果表明,氟橡胶在热空气中老化时随老化温度的升高和老化时间的延长,材料的拉伸强度、硬度降低,100%定伸应力先增加后减小,拉断伸长率先减小后增大,回弹性和压缩永久变形增大。材料的交联密度先增加后减少,表明氟橡胶在热氧老化初期以交联为主,在老化后期以降解为主。
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| 关 键 词： | 氟橡胶 热氧老化 交联结构 力学性能 |
The influence of thermal-oxidative aging on crosslink structure and mechanical properties of special fluoroelastomer |
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| ZHANG Lu-ping,FU Jian-nong,PANG Ming-lei,LI Hui,WANG Xiang-ming.The influence of thermal-oxidative aging on crosslink structure and mechanical properties of special fluoroelastomer[J].China Elastomerics,2010,20(4). |
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| Authors: | ZHANG Lu-ping FU Jian-nong PANG Ming-lei LI Hui WANG Xiang-ming |
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| Affiliation: | ZHANG Lu-ping; FU Jian-nong; PANG Ming-lei; LI Hui; WANG Xiang-ming (CNGC.Institute 53; Ji nan 250031; China); |
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| Abstract: | Fluoroelastomer can be used as a sealing material for different purposes.The aim of this work is the evaluation of the thermal-oxidative aging properties of fluoroelastomer by using accelerated aging test,then the relations between different aging temperatures and aging time and mechanical properties and crosslink structure of fluoroelastomer were obtained.The results showed that in the air-oven with extended aging time and aging temperature,the tensile strength and hardness decreased,and the tensile stress... |
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| Keywords: | fluoroelastomer thermal-oxidative aging test crosslink structure mechanical properties |
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