Microstructure and performance analysis of organic coating under high temperature and high CO₂ partial pressure

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• 作者：Qiongwei Li 李琼伟 ; Jianxun Zhang ; Mingxing Li…
• 关键词：Key wordscoating ; aging process ; microstructure ; mechanical property ; permeability
• 刊名：Journal of Wuhan University of Technology-Mater. Sci. Ed.
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：31
• 期：6
• 页码：1181-1186
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general;
• 出版者：Wuhan University of Technology
• ISSN：1993-0437
• 卷排序：31

文摘

To evaluate the property of the organic coatings in oil and gas plants, the aging process was studied in high temperature and high CO₂ partial pressure environment. Correlations were developed between the macroscopic properties and microstructure of the organic coatings. The surface appearance, mechanical properties, and permeability of the organic coatings were measured. Furthermore, the crystal structure of the organic coatings was investigated through synchrotron radiation grazing incidence X-ray diffraction (GIXRD) on the BL14B1 beam line in Shanghai Synchrotron Radiation Facility. Combined with the Fourier transform infrared spectroscopy, the molecular structure of the organic coatings was investigated. The experimental results indicate that the thickness variation and weight loss of the organic coatings increase with the immersion time, and the penetration resistance of the coating obviously decreases as the temperature rises. Moreover, the degradation of the organic coatings with immersion time in high temperature and high CO₂ partial pressure environment is caused by the amorphization of the organic coatings as the groups and bonds of the organic coatings were not damaged.