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Synthesis of SiO2 glass fibres from Si(OC2H5)4-H2O-C2H5OH-HCl solutions through sol-gel method

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Abstract

Various factors affecting the spinnability of the Si(OC2H5)4-H2O-C2H5OH-HCl solutions have been investigated in order to find appropriate experimental conditions for making gel-derived SiO2 glass fibres. The molar ratios of H2O, C2H5OH and HCl to Si(OC2H5)4 were changed in the range from 0.5 to 10.0, 0.5 to 7.0 and 0.001 to 0.1, respectively. The solutions were reacted at 30 and 80° C. It has been reconfirmed that the most important factor determining the spinnability of the solution in the course of the hydrolysis reaction is the molar ratio of water to Si(OC2H5)4 in the solution. The rise of the reaction temperature led to the remarkable shortening of the time required for drawing fibres. The increase of the amount of HCl decreased the upper limit of the H2O/Si(OC2H5)4 molar ratio range where the spinnability is found as well as reaction temperature. The solutions with a H2O/Si(OC2H5)4 ratio larger than 2.0 gave often fibres having a circular cross-section, while other solutions gave fibres with a non-circular one. The tensile strength of the gel-derived SiO2 glass fibres was also reported.

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Authors and Affiliations

  1. Department of Industrial Chemistry, Faculty of Engineering, Mie University, 514, Tsu, Mie, Japan

    Kanichi Kamiya & Toshinobu Yoko

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  1. Kanichi Kamiya
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  2. Toshinobu Yoko
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Kamiya, K., Yoko, T. Synthesis of SiO2 glass fibres from Si(OC2H5)4-H2O-C2H5OH-HCl solutions through sol-gel method. J Mater Sci 21, 842–848 (1986). https://doi.org/10.1007/BF01117362

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  • DOI: https://doi.org/10.1007/BF01117362

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