Influence of clay concentration on the morphology and properties of clay-epoxy nanocomposites prepared by in-situ polymerization under ultrasonication

Jinwei Wang, Xianghua Kong, Lei Cheng, Yedong He

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    Jinwei Wang, Xianghua Kong, Lei Cheng, and Yedong He, Influence of clay concentration on the morphology and properties of clay-epoxy nanocomposites prepared by in-situ polymerization under ultrasonication, J. Univ. Sci. Technol. Beijing , 15(2008), No. 3, pp.320-323. https://dx.doi.org/10.1016/S1005-8850(08)60060-2
    Jinwei Wang, Xianghua Kong, Lei Cheng, and Yedong He, Influence of clay concentration on the morphology and properties of clay-epoxy nanocomposites prepared by in-situ polymerization under ultrasonication, J. Univ. Sci. Technol. Beijing , 15(2008), No. 3, pp.320-323. https://dx.doi.org/10.1016/S1005-8850(08)60060-2
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    Influence of clay concentration on the morphology and properties of clay-epoxy nanocomposites prepared by in-situ polymerization under ultrasonication

    • Beijing Key Laboratory for Corrosion, Erosion and Surface Technology, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

      通信作者:

      Jinwei Wang E-mail: wangjw@mater.ustb.edu.cn

    中文摘要

    To investigate the effect of clay concentration on the structures and properties of bisphenol-A epoxy/nanoclay composites, three composites with organoclay concentrations of 2.5wt%, 5wt%, and 7.5wt% of the epoxy resin were prepared by in-situ polymerization under mechanical stirring followed by ultrasonic treatment. The clay aggregates on micro-scale indicate the absence of fully exfoliated nanocomposites. The layer space decreases with the increase of clay concentration, which suggests that the exfoliation would be constrained if more clay is added as the ultrasonic force is exerted. The thermal decomposition temperature remains almost unchanged with the increase of clay concentration. The glass transition temperature of the composites decreases slightly with the increase of clay concentration, whereas the storage modulus increases with the increase of clay concentration.

     

    Materials

    Influence of clay concentration on the morphology and properties of clay-epoxy nanocomposites prepared by in-situ polymerization under ultrasonication

    Author Affilications

      • Beijing Key Laboratory for Corrosion, Erosion and Surface Technology, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

    • Received: 04 November 2007;
    To investigate the effect of clay concentration on the structures and properties of bisphenol-A epoxy/nanoclay composites, three composites with organoclay concentrations of 2.5wt%, 5wt%, and 7.5wt% of the epoxy resin were prepared by in-situ polymerization under mechanical stirring followed by ultrasonic treatment. The clay aggregates on micro-scale indicate the absence of fully exfoliated nanocomposites. The layer space decreases with the increase of clay concentration, which suggests that the exfoliation would be constrained if more clay is added as the ultrasonic force is exerted. The thermal decomposition temperature remains almost unchanged with the increase of clay concentration. The glass transition temperature of the composites decreases slightly with the increase of clay concentration, whereas the storage modulus increases with the increase of clay concentration.

     

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