Degradation of hydrogenated nitrile-butadiene rubber in hydrochloride aqueous solution at high temperature

被引：0
|
作者：
Cong C. [1 ]
Zou G. [1 ]
Meng X. [1 ]
Zhou Q. [1 ]
机构：
[1] Department of Material Science and Engineering, Beijing Key Laboratory of Failure, Corrosion and Protection of Oil/Gas Facility Materials, China University of Petroleum (Beijing), Beijing
来源：
Cong, Chuanbo (occb@163.com) | 1600年 / Sichuan University卷 / 32期
关键词：
Degradation; HCl aqueous; Hydrogenated nitrile-butadiene rubber;
D O I：
10.16865/j.cnki.1000-7555.2016.03.022
中图分类号：
学科分类号：
摘要：
The degradation of hydrogenated nitrile-butadiene rubber (HNBR) in 10% hydrochloride aqueous solution at different high temperature was investigated. The samples unexposed and exposed to hydrochloride aqueous solution were characterized by 13C-nuclear magnetic resonance, X-ray photoelectron spectroscopy, infrared spectra, scanning electron microscopy and tensile test. From these characterizations, it can be concluded that the hydrolysis of cyanic group to carbonyl amide carboxyl acid is dominant reaction comparing to the conversion to carboxyl acid at 110 and 130℃. At 150℃, some carbonyl amide groups are altered to carboxyl acid groups and a little bit of ammonia gas produce. However, at 170℃, a great deal of carboxyl acid groups and ammonia gas produce lead to forming voids in HNBR matrix and condensation reactions occur between carbonyl amide groups leading to hardness increase of the HNBR matrix. The variety of mechanical properties can be well explained by these reactions. © 2016, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：118 / 123
页数：5
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