3302 竹繊維を強化材としたFRPボートの開発(OS5-1 安全,安心,低環境負荷の設計,OS5 安全・安心・防災・環境負荷低減,オーガナイズド・セッション)

概要

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Pleasure boats were fabricated using Bamboo FRP(BFRP). Technical consideration for practical application was cleared by fabrications and drop impact tests as follows; the lack of BFRP strength and moisture absorption of bamboo fiber during fabrication. Non-woven mat using short curled bamboo fiber was used as reinforcement because it is technically too difficult to extract long bamboo fiber. As a result, young's modulus of BFRP is widely inferior to GFRP. Therefore, specific rigidity was improved by a sandwich construction. Consequently, rigidity of BFRP-sandwich boat could make rigidity as well as the GFRP boat. However, the strength of BFRP-sandwich could not meet to the standards by drop impact tests. Next, moisture absorption of bamboo fiber during fabrication caused delamination of gel coat. This delamination was occurred by accumulated vapor caused by cure heat. As a result, this delamination occurred. It was concluded that a BFRP pleasure boat could be practical used, when these problems were solved.
2008-12-09