| 最快结晶速率温度与结晶参数的关系 |
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| 引用本文： | 张志英,谷国利.最快结晶速率温度与结晶参数的关系[J].高分子学报,1992,0(5):557-563. |
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| 作者姓名： | 张志英 谷国利 |
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| 作者单位： | 天津纺织工学院纺化系，天津纺织工学院纺化系 天津，邮政编码:300160，天津，邮政编码:300160 |
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| 摘 要： | 以经典的结晶速率与温度的关系为基础,对T_(c,max)与结晶参数的关系进行了研究.结果表明,T_(c,max)同平衡熔融温度(T_m)的比值仅与成核参数(φ)同扩散活化能(E_d)之比有关.高聚物的结晶过程可用二次成核模型近似.当结晶速率与温度的关系采用下式时 G=G_0exp-E_d/RT-φT_m~2/T~2(T_m-T)]T_(c,max)与结晶参数的关系为 T_(c,max)=2/3T_m1-(1+9α)~(1/2)cos(1/3)arccos1/(1+9α)~(3/2)+240°]或 α=φR/E_d=T_(c,max)(T_m-T_(c,max)~2/T_m?2(3T_(c,max)-2T_m)
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| 关 键 词： | 结晶温度 熔融温度 活化能 成核参数 结晶速率 |
| 收稿时间： | 1991-01-10 |
CORRELATION BETWEEN MAXIMUM CRYSTALLIZATION TEMPERATURE AND THE PARAMETERS CHARACTERIZING CRYSTALLIZATION OF POLYMERS |
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| ZHANG Zhi-ying,GU Guo-li.CORRELATION BETWEEN MAXIMUM CRYSTALLIZATION TEMPERATURE AND THE PARAMETERS CHARACTERIZING CRYSTALLIZATION OF POLYMERS[J].Acta Polymerica Sinica,1992,0(5):557-563. |
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| Authors: | ZHANG Zhi-ying GU Guo-li |
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| Institution: | Department of Textile Chemical Engineering; Tianjin Institute of Textile Science and Technology; Tianjin post code: 300160 |
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| Abstract: | The relationships between maximum crystallization temperature (Tcsmax) and the other parameters were investigated by using the classical temperature dependence of polymer crystallization rate. The results show that the ratio of Tcsmax/Tm is dependent on the ratio of the nucleation parameter to the activation energy for transport. The crystallization of polymers can be assumed to be the process of the secondary nucleation. In case the temperature dependence of the crystallization rate of polymers is adopted as. |
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| Keywords: | Crystallization temperature Melting temperature Activation energy for transport Nucleation parameter Crystallization rate |
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