| POM与POM/TPU共混物非等温结晶动力学的研究 |
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| 引用本文： | 张青兰,郝玉英.POM与POM/TPU共混物非等温结晶动力学的研究[J].中国塑料,2008,22(11):33-37. |
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| 作者姓名： | 张青兰 郝玉英 |
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| 作者单位： | 太原理工大学理学院物理系，山西 太原 030024 |
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| 基金项目： | 国家自然科学基金项目(20671068);;教育部科学技术重点项目(207015);;山西省科技攻关项目(2006031121);;太原市科技局明星专项(07020401) |
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| 摘 要： | 利用差示扫描量热仪对聚甲醛（POM）非等温结晶动力学进行了研究，并考察了热塑性聚氨酯弹性体(TPU)的加入对POM结晶动力学的影响。通过几种理论模型分析了非等温结晶数据。结果表明， Jeziorny法、莫志深法能够成功描述POM及POM/TPU共混体系的非等温结晶过程。POM的Avrami指数n稍大于POM/TPU共混物的。半结晶时间t1/2与动力学速率参数Zc的值表明POM与POM/TPU共混物的结晶速率随冷却速率的增加而增大，但相同冷却速率下POM的结晶速率要快于POM/TPU共混物。由Kissinger法估算的POM与POM/TPU共混物的活化能分别为513.5、390.5 kJ/mol。
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| 关 键 词： | 聚甲醛 热塑性聚氨酯弹性体 非等温结晶 结晶动力学 共混 |
| 收稿时间： | 2008-01-01 |
Non-isothermal Crystallization of Polyoxymethylene and Blends of Polyoxymethylene and Thermoplastic Polyurethane |
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| ZHANG Qing-lan HAO Yu-ying.Non-isothermal Crystallization of Polyoxymethylene and Blends of Polyoxymethylene and Thermoplastic Polyurethane[J].China Plastics,2008,22(11):33-37. |
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| Authors: | ZHANG Qing-lan HAO Yu-ying |
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| Affiliation: | Department of Physics, College of Science,Taiyuan University of Technology, Taiyuan 030024,China |
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| Abstract: | A kinetic study was performed on the crystallization of polyoxymethylene (POM) and POM/ thermoplastic polyurethane (TPU) blends by means of differential scanning calorimetry at various cooling rates.Several theoretical models were applied to analyze the process.It showed that Jeziorny and Mo's treatment described well the non-isothermal crystallization of POM and POM/TPU blends.The Avrami exponent n of POM/TPU blend is slightly smaller than that of POM.The values of half-time t_(1/2) and Z_c showed that the... |
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| Keywords: | polyoxymethylene thermoplastic polyurethane non-isothermal crystallization crystallization kinetics blending |
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