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首页> 外文期刊>Applied Surface Science >Surface hydrophobic modification of ultra-fine aluminum silicate by mechanically grinding and heating
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Surface hydrophobic modification of ultra-fine aluminum silicate by mechanically grinding and heating

机译：通过机械研磨和加热对超细硅酸铝进行表面疏水改性

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摘要

Highly hydrophobic ultra-fine aluminum silicate can be obtained by mechanically grinding and heating both aluminum silicate particles and octadecoic acid. The results showed that the organic modifier was adsorbed on the surface of aluminum silicate particles where a little new organic group was generated, and the hydrophobicity of ultra-fine aluminum silicate powder was enhanced. Grafting reaction was mainly carried out in heating process. Due to both grinding and heating, the modifier spread on the surface of particle completely and bonded with Si to form Si-O-C, and with Al to form acyl alumina in bidentate coordination. As a result, a highly hydrophobic layer was formed on the powder surface. However, it was unsuitable for heating temperature to exceed 180℃, or else the layer would be destroyed. All the above points represent a useful effort for surface-grafting modification of powder particles. In this study, a novel method as a reference was provided on the surface-grafting modification of powder particles.
机译：可以通过机械研磨和加热硅酸铝颗粒和十八酸来获得高度疏水的超细硅酸铝。结果表明，有机改性剂被吸附在硅酸铝颗粒表面，产生了少量新的有机基团，超细硅酸铝粉末的疏水性得到增强。接枝反应主要在加热过程中进行。由于研磨和加热的作用，改性剂完全散布在颗粒表面，并与Si结合形成Si-O-C，与Al结合形成二齿配位的酰基氧化铝。结果，在粉末表面上形成了高度疏水的层。但是，加热温度超过180℃是不合适的，否则会破坏该层。以上所有这些点代表了对粉末颗粒的表面接枝改性的有用的努力。在这项研究中，提供了一种新方法作为对粉末颗粒表面接枝改性的参考。

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  • 来源
    《Applied Surface Science》 |2010年第22期|p.6824-6828|共5页
  • 作者

    Liaosha Li; Xue Ren; Weixiao Jia; Jibin Liu; Jing Zhu;

  • 作者单位

    Anhui Provincial Key Laboratory of Metallurgy Engineering & Resources Recycling. Anhui University of Technology, Ma'anshan, Anhui Province 243002, China,Anhui University ofTechnology, Ma'anshan, Anhui Province 243002, China;

    Anhui Provincial Key Laboratory of Metallurgy Engineering & Resources Recycling. Anhui University of Technology, Ma'anshan, Anhui Province 243002, China,Anhui University ofTechnology, Ma'anshan, Anhui Province 243002, China;

    Anhui Provincial Key Laboratory of Metallurgy Engineering & Resources Recycling. Anhui University of Technology, Ma'anshan, Anhui Province 243002, China,Anhui University ofTechnology, Ma'anshan, Anhui Province 243002, China;

    Anhui Provincial Key Laboratory of Metallurgy Engineering & Resources Recycling. Anhui University of Technology, Ma'anshan, Anhui Province 243002, China,Anhui University ofTechnology, Ma'anshan, Anhui Province 243002, China;

    Anhui University ofTechnology, Ma'anshan, Anhui Province 243002, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    grind; hydrophobic modification; ultra-fine aluminum silicate; octadecoic acid;

    机译：研磨;疏水改性超细硅酸铝;十八酸;

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