https://scholars.lib.ntu.edu.tw/handle/123456789/634787
標題: | Effects of exposure temperature on degradation of polyphenylene sulfide non-woven bag-filter media by NO2 gas at high temperature | 作者: | Fukui, Kunihiro Yamada, Masaaki Ichiba, Genki Prasetya, Fandi Angga HSIU-PO KUO Huang, An Ni Fukasawa, Tomonori Ishigami, Toru |
關鍵字: | Crystallization | Exposure temperature | Oxidation | Polyphenylene sulfide filter media | Reaction mechanism | 公開日期: | 1-十月-2023 | 卷: | 34 | 期: | 10 | 來源出版物: | Advanced Powder Technology | 摘要: | The influence of exposure temperature and exposure time on the degradation of polyphenylene sulfide (PPS) fabric filter media was examined in detail. Although increases in the exposure temperature and time resulted in more severe damage, PPS filter media subjected to lower exposure temperatures always had lower tensile strengths than those of media subjected to higher exposure temperatures. Although the elastic modulus increased with exposure time, the hardening rate increased with exposure temperature. Crystallinity increased monotonically with exposure time at higher temperatures, whereas it increased once and then decreased with exposure time at lower temperatures. Exposure at lower temperatures led to the oxidation of S to the sulfinyl group, whereas exposure at higher temperatures induced oxidation to the sulfonyl group and substitution on the benzene ring. The change in NO2 concentration of the exhaust gas with exposure time depended significantly on the exposure temperature. The improved model, which considered the NO2 concentration distribution in the direction of the filter media thickness, reproduced these trends more accurately and could identify the gas–solid reaction between PPS and NO2 gas as a homogeneous reaction at lower temperatures, and as a diffusion-controlled reaction in the product layer at higher temperatures successfully. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/634787 | ISSN: | 09218831 | DOI: | 10.1016/j.apt.2023.104195 |
顯示於: | 化學工程學系 |
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