1 0 0 0 OA 平織強化CFRP材における繊維方向のヤング率の評価
1 0 0 0 OA マイクロセルポリウレタンフォームにおける動的圧縮弾性率による耐熱性の評価
- 著者
- 足立 廣正
- 出版者
- 公益社団法人 高分子学会
- 雑誌
- 高分子論文集 (ISSN:03862186)
- 巻号頁・発行日
- vol.63, no.6, pp.440-443, 2006 (Released:2007-09-21)
- 参考文献数
- 6
- 被引用文献数
- 2 2
To evaluate of thermal endurance of foamed plastics, the time characteristics of dynamic compression modulus of six micro-cell polyurethane foams were investigated by dynamic viscoelastic measurements. The logarithm of time t, at which the compression dynamic modulus became 50% of its initial value, was found to be a linear function of the reciprocal of absolute temperature T -1. Thermal endurance characteristics can thus be evaluated from the linear relation between log t and T -1.