| 尼龙612的等温结晶动力学 |
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| 引用本文： | 王玉东,付鹏,李晓光,刘民英,赵清香.尼龙612的等温结晶动力学[J].高分子材料科学与工程,2011(2):103-106. |
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| 作者姓名： | 王玉东 付鹏 李晓光 刘民英 赵清香 |
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| 作者单位： | 郑州大学材料科学与工程学院; |
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| 基金项目： | 河南省杰出青年科学基金资助项目(74100510025); 中国博士后科学基金资助项目(20060400714) |
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| 摘 要： | 用差示扫描量热(DSC)研究了尼龙612的等温结晶动力学.实验结果表明,在所研究的等温结晶温度范围内(184℃、186℃、188℃、190℃、192℃),尼龙612达到最大结晶速率时的时间、半结晶期和动力学结晶速率常数分别为:O.12min、0.19 min、0.22 min、0.29 min、0.59 min;0.1...
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| 关 键 词： | 尼龙612 等温结晶动力学 结晶活化能 |
The Isothermal Melt Crystallization Kinetics of Nylon 612 |
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| Yudong Wang,Peng Fu,Xiaoguang Li,Minying Liu,Qingxiang Zhao.The Isothermal Melt Crystallization Kinetics of Nylon 612[J].Polymer Materials Science & Engineering,2011(2):103-106. |
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| Authors: | Yudong Wang Peng Fu Xiaoguang Li Minying Liu Qingxiang Zhao |
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| Affiliation: | Yudong Wang,Peng Fu,Xiaoguang Li,Minying Liu,Qingxiang Zhao(College of Material Science and Engineering,Zhengzhou University,Zhengzhou 450052,China) |
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| Abstract: | The isothermal melt crystallization kinetics of nylon 612 was systematically studied using differential scanning calorimetry(DSC).In the studied temperature range of isothermal crystallization(184 ℃ 186 ℃,188 ℃,190 ℃,192 ℃),crystallization rate of nylon 612 reaches the maximum when the time for half-crystallization temperature and crystallization kinetic rate constants are 0.12 min, 0.19 min,0.22 min,0.29 min,0.59 min;0.15 min,0.22 min,0.24 min,0.33 min,0.64 min and 22.03 min-1,23.28 min-1,8.85 min-1,5.15 min-1,1.93 min-1 respectively.Isothermal crystallization process is in line with Avrami equation,the phenomenon of secondary crystallization is not obvious.The Avrami exponent is determined for nylon 612 as 1.81～2.32 approximately which implies that the isothermal crystallization is one or two-dimensional growth.The calculated activation energy is-209.5 kJ/mol for isothermal crystallization by Arrhenius equation. |
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| Keywords: | nylon 612 isothermal crystallization kinetics crystallization activation energy |
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