| 用 Avrami-Ozawa 模型研究6-叔丁基间甲酚非等温结晶动力学 |
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| 引用本文： | 李智勇,赵胤,孙艳红,陈燕鑫,尹秋响,陈巍.用 Avrami-Ozawa 模型研究6-叔丁基间甲酚非等温结晶动力学[J].化学工业与工程,2012,29(6):16-19. |
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| 作者姓名： | 李智勇 赵胤 孙艳红 陈燕鑫 尹秋响 陈巍 |
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| 作者单位： | 天津大学化工学院,天津,300072 |
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| 基金项目： | 国家自然科学基金项目（20836055,21176184）; 先进能源材料化学教育部重点实验室（南开大学）开放课题（KLAEMC-OP201201） |
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| 摘 要： | 主要研究了6-叔丁基间甲酚(3M6TB)的静态熔融结晶动力学.通过差示扫描量热仪(DSC)在不同的降温速率下测定降温结晶过程中的放热曲线,然后对数据进行分析得到相对转化度随温度变化的关系.用Avrami-Ozawa模型处理试验数据得到3M6TB静态熔融结晶过程的力学参数FT(达到给定结晶度所需要的冷却速率的值)以及θ(Avrami常数对Ozawa常数的比值),FT和θ均随着降温速率的增大而增大,导致在本研究试验条件下一定结晶时间内3M6TB的相对结晶度随降温速率的增加而提高.
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| 关 键 词： | 6-叔丁基间甲酚 DSC 非等温结晶 动力学 Avrami-Ozawa 模型 |
Kinetics Study on Nonisothermal Crystallization of 6-tertButyl-3-methylphenol by Avrami-Ozawa Model |
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| LI Zhi-yong,ZHAO Yin,SUN Yan-hong,CHEN Yan-xin,YIN Qiu-xiang,CHEN Wei.Kinetics Study on Nonisothermal Crystallization of 6-tertButyl-3-methylphenol by Avrami-Ozawa Model[J].Chemical Industry and Engineering,2012,29(6):16-19. |
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| Authors: | LI Zhi-yong ZHAO Yin SUN Yan-hong CHEN Yan-xin YIN Qiu-xiang CHEN Wei |
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| Affiliation: | (School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China) |
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| Abstract: | In this paper,the kinetic behavior of the static melt crystallization of 6-tert-butyl-3-methylphenol（3M6TB） was investigated by DSC at different cooling rates.The relationship between relative crystallinity and temperature at different cooling rates was determined.The experimental data was fitted with Avrami-Ozawa model and kinetic parameters such as FT and θ were obtained.Both parameters increased with cooling rate so that the relative crystallinity of 3M6TB showed similar temperature dependence with them. |
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| Keywords: | 6-tert-butyl-3-methylphenol DSC nonisothermal crystallization kinetics Avrami-Ozawa model |
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