|
|||||
|
|
| PTT的等温与非等温结晶动力学研究 | |
| 引用本文： | 王学火,孙朝阳,吕珏,关士友,吴梓新.PTT的等温与非等温结晶动力学研究[J].工程塑料应用,2011,39(11):65-69. |
| 作者姓名： | 王学火 孙朝阳 吕珏 关士友 吴梓新 |
| 作者单位： | 1. 上海华谊集团技术研究院,上海200241;华东理工大学材料科学与工程学院,上海200237 2. 上海华谊集团技术研究院,上海20024 3. 华东理工大学材料科学与工程学院,上海,200237 |
| 摘 要： | 采用DSC方法对聚对苯二甲酸丙二酯进行等温与非等温结晶动力学研究,利用不同动力学模型对其结晶过程进行分析.结果表明,在等温结晶过程中,Avrami指数n和半结晶时间随着结晶温度的升高而增大,结晶速率常数K随着结晶温度的升高而减小；在非等温结晶的过程中,结晶动力学常数Zc和相对过冷度△Tc随着降温速率的提高而上升,Avr... |
| 关 键 词： | 聚对苯二甲酸丙二酯 等温结晶 非等温结晶 动力学 |
ISOTHERMAL AND NON-ISOTHERMAL CRYSTALLIZATION KINETICS OF PTT |
|
| Wang Xuehuo,Sun Zhaoyang,Lü Jue,Guan Shiyou,Wu Zixin.ISOTHERMAL AND NON-ISOTHERMAL CRYSTALLIZATION KINETICS OF PTT[J].Engineering Plastics Application,2011,39(11):65-69. | |
| Authors: | Wang Xuehuo Sun Zhaoyang Lü Jue Guan Shiyou Wu Zixin |
| Affiliation: | (1,2),Sun Zhaoyang~1,L(u|¨) Jue~1,Guan Shiyou~2,Wu Zixin~1 (1.Technology Research lnsititute of Shanghai Huayi Group,Shanghai 200241,China; 2.Institute of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China) |
| Abstract: | The isothermal and non-isothermal crystallization kinetics of PTT was studied by DSC,and different dynamic models were used to analyze its crystallization process.The results indicated that in the isothermal crystallization process the Avrami index（n ）and half-time of crystallization(t1/2) increased with the crystallization temperature increasing,while the crystallization rate constant（k ） decreased with the enhancement of crystallization temperature.In the non-isothermal crystallization process the kinetic constant of crystallization（Zc ） and relative undercooling degree（ΔTc ） increased with the enhancement of cooling rate,and the Avrami index（n ） and half-time of crystallization(t1/2) decreased with the cooling rate increasing. |
| Keywords: | poly(trimethylene terephthalate) isothermal crystallization non-isothermal crystallization kinetics |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
