中国塑料

中国塑料 ›› 2009, Vol. 23 ›› Issue (12): 10-15 .DOI: 10.19491/j.issn.1001-9278.2009.12.003

• 材料与性能 • 上一篇    下一篇

聚酰胺11/白炭黑纳米复合材料的非等温结晶动力学研究

崔强;王标兵;胡国胜   

  1. 中北大学高分子与生物工程研究所
  • 收稿日期:2009-09-08 修回日期:2009-10-12 出版日期:2009-12-26 发布日期:2009-12-26

Investigation on Nonisothermal Crystallization Kinetics of Nylon 11/ Silica Nanocomposites

  • Received:2009-09-08 Revised:2009-10-12 Online:2009-12-26 Published:2009-12-26

摘要： 采用原位聚合法制备了聚酰胺11（PA11）及PA11/白炭黑纳米复合材料，利用差示扫描量热仪研究了PA11及其纳米复合材料的非等温结晶过程，用经Jeziorny修正的Avrami方程、Mo法对其非等温结晶动力学进行了研究，计算并得到了非等温结晶动力学参数。结果表明，Avrami方程和Mo法都适用于处理PA11及其纳米复合材料的非等温结晶过程；在其非等温结晶过程中，PA11及其纳米复合材料都包括初期结晶和二次结晶两个阶段；Mo法表明，复合材料的结晶速率比PA11的小。此外，用Huffman-Lauritzen理论计算了PA11及其纳米复合材料非等温结晶的结晶活化能，结果表明，纳米复合材料的结晶活化能的绝对值小于PA11。

关键词: 尼龙11, 白炭黑, 纳米复合材料, 非等温结晶, 结晶活化能

Abstract: Polyamide 11 (PA11) and its nanocomposites with silica were prepared via in situ polymerization. The nonisothermal crystallization behavior of the materials was investigated using differential scanning calorimeter (DSC) with the data described with Jeziorny and Mo methods. Both Jeziorny and Mo methods described well the primary and secondary crystallization stages. It was found that the crystallization rate of the nanocomposites was lower than that of neat PA11. The activation energy of the nonisothermal crystallizations was calculated based on Huffman-Lauritzen theory, the activation energy of the nanocomposites was smaller than neat PA11.

Key words: polyamide 11, silica, nanocomposites, nonisothermal crystallization, the activation energy of crystallization

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