| 二氧化钛含量对PET非等温结晶性能的影响 |
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| 引用本文： | 叶丽华,李乃祥,潘小虎.二氧化钛含量对PET非等温结晶性能的影响[J].合成技术及应用,2016(2):35-38. |
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| 作者姓名： | 叶丽华 李乃祥 潘小虎 |
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| 作者单位： | 1. 中国石化仪征化纤有限责任公司生产部,江苏仪征,211900;2. 中国石化仪征化纤有限责任公司研究院，江苏仪征 211900; 江苏省高性能纤维重点实验室，江苏仪征 211900 |
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| 摘 要： | 采用差示扫描量热法研究了不同二氧化钛(Ti O2)含量聚对苯二甲酸乙二醇酯(PET)的非等温冷结晶和熔融结晶性能。结果表明,与纯PET相比,在二氧化钛含量小于2.4%时,消光PET的冷结晶动力学常数Zc基本不变,半结晶时间t1/2略有减小;随着二氧化钛含量的增加,熔融结晶动力学常数Zc逐渐增大、半结晶时间t1/2逐渐减小,结晶速率加快;Avrami指数n先逐渐增大,当二氧化钛含量达到2.4%后又减小。
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| 关 键 词： | 聚对苯二甲酸乙二醇酯 二氧化钛 非等温结晶 差示扫描量热仪 |
Effects of amounts of titanium dioxide on non-isothermal crystallization behavior of PET |
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| Abstract: | The non-isothermal crystallization behavior of PET with different contents of TiO 2 was investigated by differential scanning calorimetry .Results showed that when the TiO 2 content lie in the range of 2.4%, the cold crystallization kinetics constant Zc basically unchanged , while the half-crystallization time t1/2 decreased slightly. With the increasing TiO2 content, the melt crystallization kinetics constant Zc increased, half-crystallization time t1/2 decreased and the crystallization rate enhanced .Avrami index n increased gradually in the beginning and then decreased when the TiO 2 content reached 2 .4%. |
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| Keywords: | polyethylene terephthalate titanium dioxide non-isothermal crystallization differential scanning calorimetry |
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