| TDI/TiO_2有机无机纳米杂化材料的合成与表征 |
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| 引用本文： | 衡忠伟,陈洪龄,孙永明,高阳.TDI/TiO_2有机无机纳米杂化材料的合成与表征[J].化学工程,2010,38(2). |
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| 作者姓名： | 衡忠伟 陈洪龄 孙永明 高阳 |
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| 作者单位： | 南京工业大学,化学化工学院,材料化学工程国家重点实验室,江苏,南京,210009 |
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| 摘 要： | 文章采用有机包覆法对纳米TiO2进行表面改性,制备了2,4-甲苯二异氰酸酯(TDI)/TiO2纳米杂化材料。采用红外光谱(FT-IR)、热质量损失分析(TGA)、静态接触角(CA)、透射电镜(TEM)及分散性实验等手段对纳米TiO2和TDI/TiO2纳米杂化粒子进行分析和表征。红外光谱和热质量损失分析显示,TDI以物理吸附和化学键合的方式存在于纳米TiO2的表面,并形成了有机包覆层。经计算,每nm2约有4.0个羟基参与化学反应,化学包覆率达57.97%。静态接触角数值表明,TDI/TiO2纳米杂化粒子具有很强的疏水性能,与水的接触角达147°。分散性实验显示,TDI/TiO2纳米杂化粒子在基础润滑油中分散稳定,静置20 d未出现分层现象。
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| 关 键 词： | 纳米TiO2 杂化材料 表面改性 2 4-甲苯二异氰酸酯 分散 |
Synthesis and characterizations of organic-inorganic nano-hybrid composite of toluene-2,4-diisocyanate /TiO_2 |
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| HENG Zhong-wei,CHEN Hong-ling,SUN Yong-ming,GAO Yang.Synthesis and characterizations of organic-inorganic nano-hybrid composite of toluene-2,4-diisocyanate /TiO_2[J].Chemical Engineering,2010,38(2). |
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| Authors: | HENG Zhong-wei CHEN Hong-ling SUN Yong-ming GAO Yang |
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| Affiliation: | State Key Laboratory of Materials-Oriented Chemical Engineering;College of Chemistry and Chemical Engineering;Nanjing University of Technology;Nanjing 210009;Jiangsu Province;China |
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| Abstract: | The surface of TiO2 nanoparticles was modified with organic coating method,and the toluene-2,4-diisocyanate(TDI)/TiO2 nano-hybrid composite was successfully fabricated.TiO2 nanoparticles and TDI/TiO2 nano-hybrid composite were characterized by infrared spectroscopy(FT-IR),thermogravimetric analysis(TGA),contact angle measurement(CA),transmission electron microscopy(TEM) as well as dispensibility experiment.FT-IR spectra and TGA results show that TDI exists on the surface of TiO2 in forms of physical adsorpt... |
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| Keywords: | TiO2 nanoparticles hybrid composite surface modification toluene-2 4-diisocyanate dispersion |
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