中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (09): 34-37 .DOI: 10.19491/j.issn.1001-9278.2008.09.007

• 材料与性能 • 上一篇    下一篇

原位聚合制备SiO2高含量PA6/SiO2母料及其复合材料

田力伟;唐颂超;邵佳敏;樊晓烨   

  1. 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
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-09-26 发布日期:2008-09-26

In-situ Preparation of PA6/SiO2 Masterbatch and Its Composites

TIAN Li-wei;TANG Song-chao;SHAO Jia-min;FAN Xiao-ye   

  1. Key Laboratory for Ultrafine Material of Ministry of Education, School of Material Science and Engineering, East China University of Science and Technology
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
  • Contact: TIAN Li-wei

摘要： 采用溶剂转移法对二氧化硅(SiO2)进行改性处理，并通过原位聚合方法制备了高含量聚酰胺6(PA6)/ SiO2母料，并通过母料与外购纯PA6共混制备了纳米复合材料。通过X-射线衍射、透射电镜(TEM)等仪器分别对PA6/SiO2纳米复合材料的结晶及晶型结构、微观分散形态进行了表征；并对纳米复合材料的力学性能等进行了测试。结果表明，改性后的SiO2在PA6原位聚合体系中分散均匀且能够达到纳米级的分散效果，并会起到异相成核剂的作用。通过母料与纯PA6共混制备的SiO2纳米复合材料与传统熔融法相比拉伸强度提高了12.17%，断裂伸长率提高了37.30%，缺口冲击强度提高了37.25%。

关键词: 聚酰胺6, 纳米二氧化硅, 溶剂转移法, 原位聚合, 母料

Abstract: Nano silica was surface modified through solvent transfer method. In presence of the modified silica, ε-caprolactam was in situ polymerized leading to a master batches, which was subsequently blended with neat polyamide 6 resulting in nano-composites. TEM showed that a uniform dispersion of SiO2 in the matrix was achieved, which may react as nucleating agent. The tensile stress and elongation of the nanocomposites were improved by 12.17% and 37.30% compared with those prepared by melting methods. The izod impact was increased by 37.25%.

Key words: polyamide 6, nano silicon dioxide, solvent transfer method, in-situ polymerization, master batches

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