| SIS-g-BMA热降解动力学研究 |
| Study on the thermal degradation kinetics of SIS-g-BMA |
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| DOI： |
| 中文关键词: 苯乙烯-异戊二烯-苯乙烯三元嵌段共聚物-甲基丙烯酸丁酯接枝共聚物 热重分析 差示热重分析 热降解动力学 |
| 英文关键词: SIS-g-BMA thermogravimetry differential thermogravimetry thermal degradation kinetics |
| 基金项目:河南省科技攻关项目（0624250025）；河南省教育厅自然科学研究项目（2006150024） |
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| 中文摘要: |
| 采用热重分析法和差示热重分析法研究苯乙烯-异戊二烯-苯乙烯三元嵌段共聚物(SIS)与甲基丙烯酸丁酯(BMA)的接枝共聚物(SIS-g-BMA)在氮气和氧气气氛中的热降解性能。结果表明，SIS-g-BMA在氮气气氛中第1步热降解温度范围为398～739 K，质量损失率为93.7%，最大热降解速率温度为658.2 K，第2步热降解温度范围为739～945 K，质量损失率为6.3%，平均活化能为176.1 kJ·mol-1；在氧气气氛中第1步热降解温度范围为459～719 K，质量损失率为76.8%，第2步热降解温度范围为719～776 K，质量损失率为23.2%，最大热降解速率温度为735.0 K，平均活化能为51.75 kJ·mol-1。 |
| 英文摘要: |
| The thermal degradation of SIS-g-BMA in nitrogen and oxygen atmospheres was investigated by thermogravimetry and differential thermogravimetry.The results showed that in nitrogen atmosphere，the temperature range for the first stage of thermal degradation was 398～739 K，weight-loss rate was 93.7%，the temperature at the maximum thermal degradation rate was 658.2 K，the temperature range for the second stage of thermal degradation was 739～945 K，weight-loss rate was 6.3%，average activation energy was 176.1 kJ·mol-1；in oxygen atmosphere，the temperature range for the first stage of thermal degradation was 459～719 K，weight-loss rate was 76.8%，the temperature range for the second stage of thermal degradation was 719～776 K，weight-loss rate was 23.2%，the temperature at the maximum thermal degradation rate was 735.0 K，and average activation energy was 51.76 kJ·mol-1. |
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