Investigation on accelerated aging behavior and mechanism of fluoroether rubber under wide temperature range

被引：0
|
作者：
Yu C. [1 ]
Peng X. [1 ]
Jiang J. [1 ]
Ma Y. [1 ]
Wang Y. [1 ]
机构：
[1] College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou
来源：
Huagong Xuebao/CIESC Journal | 2021年 / 72卷 / 06期
关键词：
Aging; Chemical properties; Fluoroether rubber; Mechanical properties; Wide temperature range;
D O I：
10.11949/0438-1157.20201624
中图分类号：
学科分类号：
摘要：
Based on the particularity of the use environment of fluoroether rubber, from a physical and chemical point of view, the quality, mechanical properties, and chemical related parameters such as structure, element composition and thermal stability were studied, and the influence of aging temperature and aging time on the properties of fluoroether rubber was analyzed. The influence of temperature and aging time on the properties of fluoroether rubber is analyzed. The results show that: fluoroether rubber has excellent resistance to lubricating oil aging, and its physical and chemical properties remain stable during long-term aging in the temperature range of -25-200℃; When aging temperature reaches 200℃ and above, the swelling and oxidation reaction accelerate, the material will gradually change from soft and tough to hard and brittle with the aging time. Especially at the extremely high temperature of 225℃, dehydrofluorination reaction causes the fracture of C-F bonds, the content of F element significantly decreases. Meanwhile, the oxidation reaction is enhanced, forming the C=O bonds, so that the content of O element increases; The quality, chemical structure and element content of fluoroether rubber basically remain unchanged at low aging temperatures, and glass transition occurred at -40℃, resulting in the reduction of mechanical properties. © 2021, Editorial Board of CIESC Journal. All right reserved.
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页码：3399 / 3410
页数：11
相关论文
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