Effects of Z-Direction Flowing RTM Technology on Distribution of Composites Fiber Volume Fraction and Thermoplastic Toughener

Abstract:

In this paper, a novel Z-direction flowing RTM technology using an in-mold resin distributor has been applied to the “Ex-situ” composites and the process feasibility was evaluated. The effect of injection type on distribution of fiber volume fraction and thermoplastic toughener in the composite were investigated. The results showed that perfect internal quality composite panels could be fabricated via the novel RTM technology and the injection type has some effects on distribution of fiber volume fraction along the thickness direction of the panels. After the injection and curing cycle, the typical bicontinuous phase structures were mainly observed at the interlaminar and also slightly spreading into the fibre beam.

• Periodical: Advanced Materials Research (Volume 629)
• Pages: 110-114
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.629.110
• Online since: December 2012
• Authors: Wei Dong Li, Gang Liu, Xue Feng An, Xiao Su Yi
• Keywords: Bicontinuous Phase Structures, Fiber Volume Fraction, RTM, Z-Direction Flowing

References

[1] Yi XS, An XF, Tang B, et al. "Ex-situ" formation periodic interlayer structure to improve significantly the impact damage resistance of carbon laminates. Advanced Engineering Materials 2003; 5:729–732.

DOI: 10.1002/adem.200300360

[2] Yi XS, An XF. Effect of interleaf sequence on impact damage and residual strength in a graphite/epoxy laminate. Journal of Materials Science 2004; 39:3253–5.

DOI: 10.1023/b:jmsc.0000025872.39337.16

[3] Cheng QF, Fang ZP, Xu YH, et al. Morphological and spatial effects on toughness and impact damage resistance of PEKC toughened BMI and graphite fiber composite laminates. Chinese Journal of Aeronautics 2009; 22:87–96.

DOI: 10.1016/s1000-9361(08)60073-4

[4] Cheng QF, Fang ZP, Yi XS, et al. "Ex-situ" concept for toughening the RTMable BMI matrix composites, Part I: improving the interlaminar fracture toughness. Journal of Applied Polymer Science 2008; 109:1625–1634.

DOI: 10.1002/app.27868

[5] Cheng QF, Fang ZP, Yi XS, et al. "Ex-situ" concept for toughening the RTMable BMI matrix composites, Part II: improving the compression after impact. Journal of Applied Polymer Science 2008; 108:2211–7.

DOI: 10.1002/app.27864

[6] Li XG, Xiong L, Ma HY, et al. Toughness improvement of PMR-type polyimide and laminated graphite systems by "Ex-situ" concept. Journal of Materials Science 2005; 40:5067–5070.

DOI: 10.1007/s10853-005-1748-7

[7] Nabovati A, Lewellin EW, Antonio CM, et al. Through-thickness permeability prediction of three-dimensional multifilament woven fabrics. Composites Part A 2010; 41:453–463.

DOI: 10.1016/j.compositesa.2009.11.011