| PBT /纳米SiO2非等温结晶动力学研究 |
| |
| 引用本文： | 张天水,牛建华,张玲,洪月蓉,李春忠.PBT /纳米SiO2非等温结晶动力学研究[J].中国塑料,2008,22(9):43-48. |
| |
| 作者姓名： | 张天水 牛建华 张玲 洪月蓉 李春忠 |
| |
| 作者单位： | 华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室;浙江华之杰塑料建材有限公司 |
| |
| 基金项目： | 国家高科技研究发展计划(2006AA032358);;国家自然科学基金(20706015,50703009);;上海市科技启明星计划(06QA14013,07QA14014);;上海市基础研究重大项目(07DJ14001);;教育部博士点基金(20070251022);;上海市重点实验室专项(07DZ22016,06DZ22008);;上海市科委纳米专项(0752nm010,0652nm034) |
| |
| 摘 要： | 熔融制备了PBT/纳米SiO2复合材料，用DSC分别研究了SiO2在低含量(0.3%质量分数)和高含量(3%)时的非等温结晶行为；并分析了PBT/纳米SiO2复合材料的结晶动力学。结果表明，纳米SiO2对PBT有异相成核作用，加入纳米SiO2后，显著提高了PBT结晶温度，加快了其结晶速率。结晶动力学表明，莫志深法很好的吻合了PBT/纳米SiO2复合材料体系，而Ozawa方法并不太适合。通过结晶活化能的计算，表明在低含量(0.3%)时有更好的结晶能力。
|
| 关 键 词： | 聚对苯二甲酸丁二醇酯 纳米二氧化硅 非等温结晶 动力学 纳米复合材料 |
Study of the Nonisothermal Crystallization Kinetics of PBT/Nano-SiO_2 Composites |
| |
| ZHANG Tian-shui NIU Jian-hua ZHANG Ling HONG Yue-rong LI Chun-zhong.Study of the Nonisothermal Crystallization Kinetics of PBT/Nano-SiO_2 Composites[J].China Plastics,2008,22(9):43-48. |
| |
| Authors: | ZHANG Tian-shui NIU Jian-hua ZHANG Ling HONG Yue-rong LI Chun-zhong |
| |
| Affiliation: | School of Materials Science and Engineering，Key Laboratory for Ultrafine Materials of Ministry of Education，East China University of Science and Technology;Zhejiang Huazhijie Plastic Building Material Co., Ltd. |
| |
| Abstract: | Poly(butylenes terephthalate)/nano-SiO_2 nanocomposites were prepared by melt blending us- ing a twin screw extruder.The nonisothermal crystallization kinetics of the nanocomposites was studied with differential scanning calorimetry(DSC)and the effect of SiO_2 was explored.It showed that crys- tallization peak temperature for the nanocomposites was much higher than that of neat PBT.Nano-SiO_2 accelerated the crystallization rate,indicating an obvious heterogeneous nucleation.Crystallization kinet- ics data ... |
| |
| Keywords: | poly(butylene terephthalate) nanosilica nonisothermal crystallization kinetics nanocomposites |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国塑料》浏览原始摘要信息 |
|
点击此处可从《中国塑料》下载全文 |
