上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (09): 1411-1415.

• 化学工程 • 上一篇    下一篇

纳米颗粒填充聚四氟乙烯基复合材料的分散性表征

 何春霞, 陆德荣, 肖声明   

  1. (南京农业大学 工学院， 南京 210031)
  • 收稿日期:2010-09-15 出版日期:2011-09-30 发布日期:2011-09-30
  • 基金资助:

    高等学校博士点基金项目（20060307002），中央高校基本科研业务费专项基金资助项目（KYZ200921）

Dispersion Characterization of PTFE Composites Filled with Different Nano-particles

 HE  Chun-Xia, LU  De-Rong, XIAO  Sheng-Ming   

  1. (College of Engineering, Nanjing Agricultural University, Nanjing 210031, China)
  • Received:2010-09-15 Online:2011-09-30 Published:2011-09-30

摘要： 对纳米Si3N4、AlN和SiC颗粒填充聚四氟乙烯（PTFE）基复合材料表面形貌的扫描电子显微镜(SEM)图像进行处理与分割，利用颗粒分散度方法表征分割图像中纳米颗粒的团聚程度和分散性.结果表明：在3种纳米颗粒填充PTFE基复合材料中，纳米SiC的分散性最佳，纳米AlN的分散性最差；当纳米Si3N4和SiC的质量分数为7%、纳米AlN的质量分数为5%时，PTFE基复合材料的分散性较好；经钛酸酯偶联剂处理后，可使纳米Si3N4和SiC在PTFE基复合材料中的分散性提高，但会使纳米AlN在PTFE基复合材料中的分散性下降.

关键词: PTFE基复合材料, 纳米颗粒, 分散性, 表征

Abstract: The sweep electron microscopy (SEM) image was processed and segmented to nano Si3N4, SiC, and AlNmodified PTFE composites. Agglomeration degree and dispersed uniformity of the nano-particles in the image were quantatively segmented using particle dispersion method. The results show that the dispersed uniformity of these three nano-particle decreases as follows: nanoSiC, and nanoSi3N4, nano-AlN. Under the condition of 7% of nano-Si3N4 and nano-SiC and 5% of nano-AlN, the dispersed uniformity in PTFE is better. By processing coupling agent NDZ, the agglomeration degree of nano-particles in PTFE will decrease, the dispersed formity of nanoSi3N4 and nano-SiC in PTFE will be improved, but the dispersed formity of nano-AlN in PTFE will decrease.

Key words: PTFE composites, nanoparticles, dispersibility, analysis

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