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    題名: Preparation of hydrophobic nanosilica-filled polyacrylate hard coatings on plastic substrates
    作者: Chang, Chao-Ching;Oyang, Tai-Yueh;Chen, Yu-Chen;Hwang, Feng-His;Cheng, Liao-Ping
    貢獻者: 淡江大學化學工程與材料工程學系
    關鍵詞: collodial silica;hard coatings;UV-curing;plastic substrate;hydrophobic
    日期: 2014-05
    上傳時間: 2015-01-12 16:53:41 (UTC+8)
    出版者: New York: Springer New York LLC
    摘要: Colloidal silica nanoparticles synthesized from tetraethoxysiliane (TEOS) via a sol-gel process were surface-modified first by 3-(trimethoxysilyl)propyl methacrylate (MSMA), and then by trimethylethoxysilane (TMES). The former agent acts both as a coupling agent and as a C=C provider, whereas the latter agent is used to prevent particle aggregation and to increase hydrophobicity of the coating. The modified silica particles were UV-cured together with the monomer, 2-hydroxyethyl methacrylate (2-HEMA), and the crosslinking agent, dipentaethritol hexaacrylate (DPHA), to form hard coatings on plastic substrates. Both differential scanning calorimetric (DSC) and thermal gravimetric (TG) analyses of the hybrid materials indicated enhanced thermal stability with respect to the neat HEMA-DPHA copolymer. Furthermore, due to the incorporation of TMES, hydrophobicity of the hybrid coating increased considerably with increasing modified-silica content. In the extreme case, an anti-abrasive hard coating (7H on PMMA) with a water contact angle of 99o has been obtained at the silica content of 15%.
    關聯: Journal of Coatings Technology and Research 11(3), pp.381-386
    DOI: 10.1007/s11998-013-9540-0
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文

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