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Development of Gap Mold Technology for RTM of CFRP Parts

Article of Honda R&D Technical Review Vol.30 No.1

Summary

A mold structure making it possible to conduct gap resin transfer molding (RTM), a method that reduces the internal pressure of the mold during molding of carbon fiber reinforced plastics (CFRP) parts, using standard hydraulic pressing equipment with no position control function has been developed. Gas springs have been employed in order to maintain the necessary fixed gap in the mold from the vacuum process to the resin injection process. In addition, a specialized seal shape able to withstand both the negative pressure produced during the vacuum process and the positive pressure produced during the resin filling process was also developed. The results of gap RTM using a mold applying these technologies demonstrated that they made it possible to both realize reduced internal mold pressure and produce a good quality molded part even in the case of a large part (a lower dashboard).

Reference

(1) Brady, M., Brady, P.: Technology developments in automotive composites, Reinforced Plastics, Vol. 54, Issue 6, p. 25-29, (2010)
(2) Young, W., Tseng, C.: Study on the Pre-Heated Temperatures and Injection Pressures of the RTM Process, Journal of Reinforced Plastics and Composites, Vol. 13, p. 467-482, (1994)
(3) Fais, C.: Lightweight automotive design with HP-RTM, Reinforced Plastics, Vol. 55, Issue 5, p. 29-31, (2011)
(4) Simacek, P., Advani, S., Iobst, S.: Modeling Flow in Compression Resin Transfer Molding for Manufacturing of Complex Lightweight High-Performance Automotive Parts, Journal of Composite Materials, Vol. 42, p. 2523-2545, (2008)
(5) JP, 2005-271551, A
(6) Kobayashi, M., Dan, K., Baba, T., Yamakawa, K., Nakano, R.: VISUALIZATION EXPERIMENT AND NUMERICAL SIMULATION OF LIQUID IMPREGNATION WITH RACE-TRACKING FOR RTM PROCESS, 17th European Conference on Composite Materials(ECCM17), (2016)
(7) Chang, C., Hourng, L., Chou, T.: Effect of Process Variables on the Quality of Compression Resin Transfer Molding, Journal of Reinforced Plastics and Composites, Vol. 25, p. 1027-1037, (2006)
(8) NOK CORPORATION: B-g. O Ringu no Sekkei Kijun, TECHNICAL NOTE, p. 130 (in Japanese)
(9) JIS B 2401-2:2012, O-Rings -- Part 2: Housing dimensions and sizes
(10) JIS B 2410:2005, O-rings -- Suitability of elastomeric materials for industrial applications

Author (organization or company)

Hiroyuki KANNO(Automobile R&D Center)、Hiroshi KIYOMOTO(Automobile R&D Center)、Bungo NISHINO(Automobile R&D Center)、Yohei KAJIURA(Automobile R&D Center)、Takayuki TAKATSUKA(Automobile R&D Center)、Masahiro ANZAI(Automobile R&D Center)、Kohei MATSUMOTO(Automobile R&D Center)

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