| POM/TPU共混合金非等温结晶动力学研究 |
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| 引用本文： | 文志红,李宝龙,刘娜,尚翠.POM/TPU共混合金非等温结晶动力学研究[J].天津科技大学学报,2014(5):48-52,64. |
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| 作者姓名： | 文志红 李宝龙 刘娜 尚翠 |
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| 作者单位： | 天津科技大学材料科学与化学工程学院,天津,300457 |
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| 摘 要： | 通过布拉本德单螺杆挤出机熔融共混挤出制备聚甲醛/热塑性聚氨酯(POM/TPU)共混合金.采用差示扫描量热仪(DSC)和热台偏光显微镜(HS-PLM)对POM/TPU共混合金的非等温结晶动力学及POM球晶生长形态进行跟踪观察.结果表明:采用莫志深法对POM/TPU共混合金的非等温结晶动力学分析结果与Jeziorny法相吻合;POM结晶过程中同时存在均相成核和异相成核,TPU提高了POM的结晶完善性.
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| 关 键 词： | 聚甲醛 热塑性弹性体 非等温结晶动力学 球晶生长 |
Non-isothermal Crystallization Kinetics of POM/TPU Blends |
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| WEN Zhihong,LI Baolong,LIU Na,SHANG Cui.Non-isothermal Crystallization Kinetics of POM/TPU Blends[J].Journal of Tianjin University of Science & Technology,2014(5):48-52,64. |
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| Authors: | WEN Zhihong LI Baolong LIU Na SHANG Cui |
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| Institution: | WEN Zhihong;LI Baolong;LIU Na;SHANG Cui;College of Material Science and Chemical Engineering,Tianjin University of Science & Technology; |
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| Abstract: | Blends of polyoxymethylene and thermoplastic polyurethane（POM/TPU）were prepared by melting blending through Brabender single screw extruder. Non-isothermal crystallization kinetics and spherulite morphology of POM/TPU blends were characterized by differential scanning calorimeter（DSC）and hot stage polarizing light microscopy（HS-PLM）, respectively. It is found that non-isothermal crystallization kinetics of POM/TPU blends analysed with Mo’s equation and Jeziorny method achieved the same result. Homogeneous nucleation and heterogeneous nucleation both existed during crys-tallization,with indicates TPU accelerated the crystallinity of POM slightly. |
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| Keywords: | polyoxymethylene thermoplastic polyurethane non-isothermal crystallization kinetics spherulitic growth |
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