Title:
FIBER-REINFORCED RESIN HOLLOW CYLINDRICAL BODY
Document Type and Number:
WIPO Patent Application WO/2020/217573
Kind Code:
A1
Abstract:
Provided is a fiber-reinforced resin hollow cylindrical body provided with impact energy absorption that is torsion-resistant and can be used in an energy absorption member such as a crash box. The fiber-reinforced resin hollow cylindrical body comprises: a reinforced fiber thread; and a resin composition impregnated with the reinforced fiber thread. The reinforced fiber thread has a fiber diameter D of 10.0 to 18.0 μm, the reinforced fiber thread has a weight T of 100 to 1500 tex, the reinforced fiber thread in the fiber-reinforced resin hollow cylindrical body has a volume content rate V of 40.0 to 80.0 %, and the above D, T, and V satisfy the following formula (1).
(1) 0.090 ≦ T１/４ × Ｖ/Ｄ３ ≦ 0.155
Inventors:
TAKAHASHI YUTA (JP)
NUKUI YOSUKE (JP)
SANO KAZUNORI (JP)
HIRAYAMA NORIO (JP)
SAKATA KAZUHIRO (JP)
NUKUI YOSUKE (JP)
SANO KAZUNORI (JP)
HIRAYAMA NORIO (JP)
SAKATA KAZUHIRO (JP)
Application Number:
PCT/JP2019/044102
Publication Date:
October 29, 2020
Filing Date:
November 11, 2019
Export Citation:
Assignee:
NITTO BOSEKI CO LTD (JP)
International Classes:
B29C70/06; B29C70/32; B29K105/08; B29L31/30
Domestic Patent References:
| WO2010084809A1 | 2010-07-29 |
Foreign References:
| JP6493646B1 | 2019-04-03 | |||
| JPH06143273A | 1994-05-24 |
Other References:
KAZUHIRO SAKATA, NORIO HIRAYAMA, YOSHIO AOKI, SHOMA KAWARAGUCHI, YUSAKU KATO, KAZUNORI SANO, TSUNEFUMI AIZAWA , SEIJI YAMADA: "Energy Absorption Properties of FW Cylinder Using High Strength Glass Fiber", REINFORCED PLASTICS, vol. 64, no. 5, 22 May 2018 (2018-05-22), pages 212 (18) - 217 (23), XP009524552, ISSN: 0452-9685
See also references of EP 3888897A4
See also references of EP 3888897A4
Attorney, Agent or Firm:
SATO & ASSOCIATES (JP)
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