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首页> 外文期刊>Journal of Applied Polymer Science >Effects of elevated temperature and crude oil on the properties of a hydrogenated nitrile butadiene rubber elastomer
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Effects of elevated temperature and crude oil on the properties of a hydrogenated nitrile butadiene rubber elastomer

机译：高温和原油对氢化丁腈橡胶弹性体性能的影响

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The stability and durability of hydrogenated nitrile butadiene rubber (HNBR) material in crude oil environments are of great importance for petroleum equipment to resist leakage and to ensure reliability. In this paper, an HNBR material was fabricated, and the degradation of the HNBR material was investigated in simulated crude oil environments. One crude oil and three temperatures (50 degrees C, 75 degrees C, and 100 degrees C, based on actual crude oil operations, were used in this study. Weight changes for the HNBR specimens were monitored after exposure to the environments over time. Optical microscopy was used to show the topographical changes on the specimen surfaces. Attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy was employed to study the surface chemistry of the HNBR material before and after exposure to the simulated crude oil environments at selected times. Mechanical property tests (tensile and compressive stress-strain tests, tear strength test, and compression set test) were conducted to assess the changes in mechanical properties of the HNBR specimens before and after exposure to the environments. The test results show that the physical-mechanical properties of the HNBR material changed significantly. The temperature and the crude oil had a direct effect on the degradation of the mechanical properties. The ATR-FTIR test results indicate that the surface chemistry changed via chain crosslinking in the material after exposure to the environments over time. The degradation mechanisms of the HNBR material after exposure to the crude oil could be due to the presence of chain crosslinking, chain mobility, and backbone scission. (C) 2016 Wiley Periodicals, Inc.
机译：氢化丁腈橡胶（HNBR）在原油环境中的稳定性和耐用性对于石油设备抵抗泄漏和确保可靠性至关重要。本文制备了HNBR材料，并在模拟原油环境中研究了HNBR材料的降解。在这项研究中，使用了一种原油和三种温度（分别基于实际原油操作的50摄氏度，75摄氏度和100摄氏度），并在长时间暴露于环境后监测了HNBR试样的重量变化。用显微镜观察样品表面的形貌变化，并采用衰减全反射傅立叶变换红外（ATR-FTIR）光谱技术研究HNBR材料在选定时间暴露于模拟原油环境前后的表面化学性质。进行了机械性能测试（拉伸和压缩应力应变测试，撕裂强度测试和压缩永久变形测试），以评估HNBR样品在暴露于环境之前和之后的机械性能变化。测试结果表明， HNBR材料的力学性能发生了显着变化，温度和原油对m的降解有直接影响。力学性能。 ATR-FTIR测试结果表明，随着时间的推移，材料暴露于环境后，表面化学性质通过链中的链交联而改变。暴露于原油后，HNBR材料的降解机理可能是由于存在链交联，链迁移和主链断裂。 （C）2016威利期刊公司

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