| 摘要 |
PURPOSE:To improve the weather resistance, chemical stability and flexural breakage resistance of an optical fiber cord and to reduce the weight of a coating material by coating peripherally an optical fiber core with a fiber- reinforced plastic consisting of PE fibers having specific tensile strength and tensile modulus as a reinforcing material and a thermosetting resin as a matrix material. CONSTITUTION:The PE fibers (A) have preferably the tensile strength of at least 20g/denier, more preferably >=30g/denier and more particularly preferably >=40g/denier and the tensile modulus of at least 500g/denier, more preferably >=800g/denier and more particularly preferably >=1,000g/denier. The single yarn denier of the PE fibers to be used is more preferably 0.2-20d. The thermosetting resin (B) is an unsatd. polyester resin, vinyl ester resin, epoxy resin, phenolic resin, etc. which may be alone or the compd. of >=2 kinds. The bending modulus of the fiber-reinforced plastic (C) consisting of the PE fibers (A) as the reinforcing material and the thermosetting resin (B) as the matrix material is preferably 300-1,500kg/mm<2>, more preferably 500-1,000kg/mm<2>.
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