高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (7): 1351.

• 研究论文 • 上一篇    下一篇

辐照法制备的醋酸乙烯酯/蒙脱土纳米复合材料与HDPE和PA6共混物的研究

丁运生1,2, 张志成1   

  1. 1. 中国科学技术大学化学与材料学院, 合肥 230026;
    2. 合肥工业大学化学和工程学院, 合肥 230009
  • 收稿日期:2003-06-05 出版日期:2004-07-24 发布日期:2004-07-24
  • 通讯作者: 张志成(1945年出生),男,教授,博士生导师,从事高分子辐射化学研究.E-mail:zczhang@ustc.edu.cn E-mail:zczhang@ustc.edu.cn
  • 基金资助:

    教育部博士点基金(批准号:2000035805)资助

Studies on the Blend Composed of HDPE, PA6 and PVAc-Montmorillonite Nanocomposite Prepared via γ-ray Irradiation

DING Yun-Sheng1,2, ZHANG Zhi-Cheng1   

  1. 1. School of Chemistry and Materials, University of Science and Technology of China, Hefei 230026, China;
    2. College of Chemistry and Engineering, Hefei University of Technology, Hefei 230009, China
  • Received:2003-06-05 Online:2004-07-24 Published:2004-07-24

PDF (PC)

被引次数

20

摘要： 利用γ射线辐射引发醋酸乙烯酯(VAc)在蒙脱土(MMT)中的原位插层聚合,X射线衍射测试与透射电子显微镜观察结果表明,PVAc/MMT复合材料为纳米复合材料.其与HDPE和PA6的共混物的扫描电镜测试结果表明,PVAc-MMT纳米复合物以微胶囊的形式存在于PVAc-MMT/HDPE/PA6共混物中,均匀分散的PVAc-MMT纳米复合物改变了复合材料的相结构.热失重测试结果显示,PVAc-MMT/HDPE/PA6的起始分解温度明显高于PVAc/HDPE/PA6,热失重过程差异较大,MMT纳米粒子的存在改变了材料的结构,使材料热性能得到了改善.在PVAc-MMT/HDPE/PA6共混物中,PVAc-MMT具有增强与增韧作用.

关键词: &gamma, 射线辐射引发, 纳米复合物, 相结构, 热稳定性, 力学性能

Abstract: The in suit intercalated polymerization of vinyl acetate(VAc)-montmorillonite(MMT) was initiated via γ-ray irradiation and PVAc-MMT composite was obtained. PVAc was also prepared by the same way. X-ray diffraction(XRD) results show that the PVAc-MMT composite is a kind of nanocomposite, and transmission electron microscopy(TEM) observation gives the same result directly. Ternary blend composed of PVAc-MMT/HDPE/PA6(PMHP) was prepared by melt-mixing way, and scanning electron microscopy(SEM) testing result reveals that the PVAc-MMT nanocomposite dispersed in the PMHP for a kind of capsule particles. Thermogravimetric analysis(TGA) results show that the thermal stability of PMHP is much greater than that of PVAc/HDPE/PA6(PHP) blend because of the phase structure change of PMHP and the existence of PVAc-MMT nanocomposite in that of the ternary blend of PMHP, for the same reason the mechanical properties of PMHP is better than HDPE and PHP blend.

Key words: ray irradiation initiation, Nanocomposite, Phase structure, Thermal stability, Mechanical property

中图分类号: 

TrendMD: