高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

硅烷偶联剂对纳米二氧化钛表面改性的研究

姚超1,2；高国生2;林西平2; 杨绪杰1;陆路德1;汪信1   

  1. 1. 南京理工大学化工学院, 南京 210094;
    2. 江苏工业学院, 常州 213016
  • 收稿日期:2005-03-28 修回日期:2005-06-07 出版日期:2006-03-20 网络出版日期:2006-03-20

Surface Modification of Nanosized TiO2 with Silane Coupling Reagent

YAO Chao1,2, GAO Guo-Sheng2, LIN Xi-Ping2, YANG Xu-Jie1, LU Lu-De1, WANG Xin1   

  1. 1. School of Chemical Engineering,Nanjing University of Science \& Technology,
    Nanjing 210094, China;
    2. Jiangsu Polytechnic University, Changzhou 213016, China
  • Received:2005-03-28 Revised:2005-06-07 Published:2006-03-20 Online:2006-03-20

PDF (PC)

2797

被引次数

433

摘要： 利用硅烷偶联剂(KH-570)对表面包覆氧化硅的金红石相纳米TiO2进行了有机表面改性. 采用红外光谱(IR)、X射线光电子能谱(XPS)、热分析(TG-DTA)、透射电镜(TEM)和润湿性实验等分析手段对表面改性前后的纳米TiO2进行了表征. 红外光谱和X射线光电子能谱表明, KH-570以化学键合的方式结合在纳米TiO2的表面, 并形成了有机包覆层. 经测量, 纳米TiO2表面包覆的KH-570的质量分数约为7.42%～8.59%. 润湿性实验显示, 经KH-570表面改性的纳米TiO2具有疏水性. 力学性能实验表明, 经KH-570表面改性的纳米TiO2能同时提高复合材料的强度和韧性.

关键词: 纳米TiO2, KH-570, 表面改性

Abstract: The surface modification with silane coupling reagent KH-570 of nanosized TiO2 in the rutile phase pre-coated with silica, was studied. The prepared samples were characterized by FT-IR, XPS,TEM, TG and DTA techniques. According to the spectra of FT-IR and XPS, it can be inferred that the KH-570 is bound on the surface of nanosized TiO2 particles and an organic coating layer is formed. The mass fraction of KH-570 coated on the surface of nanosized TiO2 measured is about 7.42%～8.59%.The wetting experiments show that the hydrophobicity of nanosized TiO2 modified with KH-570 is improved. Mechanical tests reveal that the strength and toughness of the nanosized TiO2 modified with KH-570 are improved simultaneously.

Key words: TiO2, KH-570, surface modification

中图分类号: