| PET纤维热老化的研究 |
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| 引用本文： | 梁超,李文刚,张幼维,赵炯心.PET纤维热老化的研究[J].合成技术及应用,2014(1):15-18,46. |
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| 作者姓名： | 梁超 李文刚 张幼维 赵炯心 |
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| 作者单位： | 东华大学纤维材料改性国家重点实验室,上海201620 |
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| 摘 要： | 测量了聚对苯二甲酸乙二醇酯(PET)纤维在不同温度下经不同时间热老化后的特性粘数、端羧基含量和断裂强度。PET纤维的特性粘数降和端羧基含量增长基本符合一级反应的规律。建立了PET纤维断裂强度变化的动力学方程,断裂强度随时间的变化为三级反应,断裂强度变化的表观活化能为135.7 kJ·mol-1。
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| 关 键 词： | 聚对苯二甲酸乙二醇酯 热降解 断裂强度 动力学 |
Study on thermal alageing of PET fiber |
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| Liang Chao,Li Wengang,Zhang Youwei,Zhao Jiongxin.Study on thermal alageing of PET fiber[J].Synthetic Technology and Application,2014(1):15-18,46. |
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| Authors: | Liang Chao Li Wengang Zhang Youwei Zhao Jiongxin |
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| Affiliation: | (State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China ) |
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| Abstract: | The intrinsic viscosity、content of carboxyl end group and fracture strength of Polyethylene tereph-thalate （ PET） fibers were measured after thermal ageing .The results showed that the intrinsic viscosity degradation and the growth of carboxyl end group content of PET during the thermal aging is first order reaction .Fitting is made to the loss of strength and found that the strength loss of PET fiber is third-order reaction and the apparent activation energy is 135.7 kJ· mol-1 . |
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| Keywords: | Polyethylene terephthalate （ PET） thermal degradation fracture strength kinetics |
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