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長繊維強化樹脂の高速衝撃特性

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川崎製鉄技報

KAWASAKI STEEL GIHO Vol.29 (1997) No.4

長繊維強化樹脂の高速衝撃特性

Impact Resistance Property of Long-Fiber-Reinforced Thermoplastic

尾野 友重(Tomoshige Ono) 久保 秀穂(Hideho Kubo) 副田 直彦(Naohiko Soeda) 要旨 : 長繊維強化ポリプロピレンの高速衝撃特性を検討した。衝撃試験はホプキンソン棒法衝撃 引張試験により行い,比較として,静的な引張試験を行った。最大引張応力,および衝撃 吸収エネルギーはガラス繊維含有率,繊維長の増加に伴い,増加した。また,相溶化剤の 添加は,最大応力を増加させるが,材料の脆性化をもたらすことが明らかになった。これ ら結果は,耐衝撃用途の部品設計,材料設計に反映される。 Synopsis :

The tensile fracture behavior of long glass fiber reinforced polypropylene (GFPP) under a high strain rate in a range from 500 to 1 000 s21 was investigated by means of tensile impact tests of Hopkinson pressure bar system and was compared with that obtained by pseudo-static tensile tests. The maximum stress and the impact absorption energy increased as glass fiber (GF) length or GF content increased. An addition of compatibilizer increased the maximum stress but made the materials brittle. These results are reflected on designs of parts or materials which should withstand crash impact.

(c)JFE Steel Corporation, 2003

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