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Coating and water permeation properties of SiO2 thin films prepared by the sol-gel method on nylon-6 substrates

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Abstract

Nylon-6 substrates were coated with SiO2 thin films by the sol-gel method and their water permeability coefficient was evaluated. Methyltriethoxysilane (MTES) and tetraethoxysilane (TEOS) were used as starting materials. The addition of MTES to TEOS has enabled the formation of crack-free thin films on the substrates. The thin films strongly adhered to the substrates. The water permeability coefficients of nylon-6 substrates coated with these thin films decreased with the increase in the ratio of TEOS to the total alkoxides. The pretreatment of the nylon-6 substrates with γ-aminopropyltriethoxysilane was found to be effective to suppress the water permeability. The water permeability was suppressed by about 40% under the optimal condition.

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Authors and Affiliations

  1. Department of Applied Materials Science, College of Engineering, Osaka Prefecture University, 593, Sakai, Osaka, Japan

    Kiyoharu Tadanaga, Kazuki Iwashita & Tsutomu Minami

  2. Department of Metallurgical Engineering, Faculty of Science and Engineering, Kinki University, 577, Higashi-Osaka, Osaka, Japan

    Noboru Tohge

Authors
  1. Kiyoharu Tadanaga
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  2. Kazuki Iwashita
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  3. Tsutomu Minami
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  4. Noboru Tohge
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Tadanaga, K., Iwashita, K., Minami, T. et al. Coating and water permeation properties of SiO2 thin films prepared by the sol-gel method on nylon-6 substrates. Journal of Sol-Gel Science and Technology 6, 107–111 (1996). https://doi.org/10.1007/BF00402593

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  • DOI: https://doi.org/10.1007/BF00402593

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