| 基于多种微观表征方法探究氯丁橡胶热氧老化机理 |
| Study on Thermal-oxidative Aging Mechanism of Neoprene Based on a Variety of Microscopic Characterization Methods |
| 投稿时间：2016-01-20 修订日期：2016-01-20 |
| DOI： |
| 中文关键词: 核磁共振 扫描电镜 红外光谱 交联密度 热氧老化 |
| 英文关键词: nuclear magnetic resonance scanning electron microscope infrared spectroscopy crosslink density thermal-oxidative aging |
| 基金项目:山东省自然科学基金资助项目(ZR2014EMM018) |
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| 中文摘要: |
| 本文采用溶胀法、核磁共振(NMR)、扫描电镜(SEM)和红外光谱(FTIR)等方法,对氯丁橡胶热氧老化过程微观结构变化进行了表征。结果表明：随着老化时间的延长,交联密度增大,老化温度越高增幅越大,老化后期有所下降；氯丁橡胶微观形貌由颗粒状逐渐变成了胶着状；分子内的C=C键的峰值随老化温度的提高而降低,C-Cl键的峰值发生微小变化。 |
| 英文摘要: |
| In this paper, the method of swelling, nuclear magnetic resonance (NMR), scanning electron microscope (SEM) and infrared spectroscopy (FTIR) were used to characterize the microstructure of neoprene during the thermal-oxygen aging process. Results showed that: crosslink density increased with aging time prolonged and the higher the aging temperature, the bigger of the crosslink density, and declined in late stage of aging; the micro morphology of neoprene changed particulate matter into stalemate; the peak of C=C bond in the molecule decreased with the increase of the aging temperature, and the peak value of the C-Cl bond changed slightly. |
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