| 聚对苯二甲酸丙二醇酯树脂的结晶特性和结晶动力学 |
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| 引用本文： | 陈国康,顾利霞. 聚对苯二甲酸丙二醇酯树脂的结晶特性和结晶动力学[J]. 高分子材料科学与工程, 2001, 17(1): 141-145 |
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| 作者姓名： | 陈国康 顾利霞 |
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| 作者单位： | 中国纺织大学高分子材料系 |
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| 摘 要： | 采用热台偏振光显微镜和ＤＳＣ差示扫描量热仪对ＰＴＴ、ＰＢＴ和ＰＥＴ的结晶性能进行了研究。实验得到的结晶是：ＰＴＴ的结晶诱导期和球晶出现与ＰＢＴ接近，但与ＰＥＴ相差较大：球晶生长速率随温度的变化ＰＴＴ快于ＰＥＴ；在相同结晶温度下，ＰＴＴ的分子链段比ＰＥＴ更易进入结晶界面和形成稳定的晶核，然而总晶速率ＰＴＴ小于ＰＢＴ。
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| 关 键 词： | 聚对苯二甲酸丙二醇酯 等温结晶 结晶动力学 特性 |
| 文章编号： | 1000-7555(2001)01-0141-05 |
STUDIES ON THE CRYSTALLIZATION PROPERTIES AND CRYSTALLIZATION KINETICS OF POLYTRIMETHYLENE TEREPHTHALATE |
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| CHEN Guo-kang,GU Li-xia. STUDIES ON THE CRYSTALLIZATION PROPERTIES AND CRYSTALLIZATION KINETICS OF POLYTRIMETHYLENE TEREPHTHALATE[J]. Polymer Materials Science & Engineering, 2001, 17(1): 141-145 |
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| Authors: | CHEN Guo-kang GU Li-xia |
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| Abstract: | The crystallization properties and crystallization kinetics of PTT(polytrimethylene terephthalate), PBT(polybutylene terephthalate) and PET(polyethylene terephthalate) were studied by means of the heat table polarization microscope and DSC differential scanning calorimeter. It omes to the conclusions that the crystallization induction period and spherulit appearance time of PTT are approximate to PBT but different from PET. PTT spherulite growth rate that varied with temperature is more quickly than PET. Under the same temperature, if chain fragments of PTT are compared to that of PET, the former enters crystallization interface and forms stable crystal nucleus more easily than the latter, however, the overall crystallization rate of PTT is smaller than PBT. |
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| Keywords: | polytrimethylene terephthalate isothermal crystallization crystallization kinet |
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