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Ultraviolet-curing blends for coating of optical fibres

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Abstract

An ultraviolet-curable polymeric blend was developed to serve as a coating for optical fibres. The composition of the system was 55.6 wt% urethane acrylate, 44.4 wt% epoxyacrylate, 1.5 wt% benzoin isopropyl ether and 25 wt% 1,3-butanediol diacrylate. Three different silane coupling agents were tested to improve the polymer-glass adhesion. The optical fibres were drawn at 0.45 m sec−1 using a CO2 laser; the ultraviolet curing blend was applied and cured with a xenon flash lamp. Ageing studied in water and in humid environments performed on these coated fibres showed that there was an increase in their strength compared to the silicone-coated fibres. It was possible to triple the fibre's drawing velocity without affecting the percentage conversion of the resin and the mechanical and optical properties of the fibre.

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Authors and Affiliations

  1. Department of Materials Engineering, Federal University of SÃo Carlos, SÃo Carlos, SP, Brazil

    A. H. Rodas & R. E. S. Bretas

  2. Optical Fibres Section, Research and Development Center, Telebras, Campinas, SP, Brazil

    A. Reggianni

Authors
  1. A. H. Rodas
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  2. R. E. S. Bretas
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  3. A. Reggianni
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Rodas, A.H., Bretas, R.E.S. & Reggianni, A. Ultraviolet-curing blends for coating of optical fibres. J Mater Sci 21, 3025–3032 (1986). https://doi.org/10.1007/BF00553332

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  • DOI: https://doi.org/10.1007/BF00553332

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