| 摘要 |
PURPOSE:To eliminate air bubble in impregnated resin by repeating decompression and pressurization of resin impregnated lobing after winding and laminating on a mold and heating thereof. CONSTITUTION:An epoxy resin is impregnated in a lobing of a carbon fibre, then, it is wound and laminated on a mold, and after a softening of the impregnated resin 4 by heating it to 60-80 deg.C, the air bubble 5 in the resin is flowed out on a surface by being decompressed lower than 10Torr and then expanded, further, a volume of a residual air bubble is reduced by the pressurization, the decompression and the pressurization are repeated again, after a completion of the elimination of the air bubble, the epoxy resin is cured under heating to 120 deg.C, and an air- bubble-less FRP product with a high strength is manufactured.
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