RTM theory

  • Kevin Potter


It is probably the case that in all the technical literature on RTM more pages are taken up by attempts to understand the processes that occur during the injection of resin than by any other single area of study. There are essentially two reasons for this. Firstly, the subject of how resin moves through a tool and wets out the reinforcement is central to questions of quality and production rate. Secondly, finding reliable answers to even the most basic questions has proven to be very difficult and this has acted as a spur to the further development of models.


Contact Angle Flow Channel Bulk Flow Flow Front Mould Filling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Moinar, J. A., Trevino, L. and Lee, L. J. (1989) Mold filling in structural RIM and resin transfer molding, 44th Annual Conf. Composites Institute, SPI, Feb. 1987, Session 20A.Google Scholar
  2. 2.
    Lundstrom, T. S. (1994) Void formation and transport in the RTM process, Proc. 39th International SAMPE Symposium, April.Google Scholar
  3. 3.
    Lekebou, C, Johari, M., Norman, D. and Bader, M. (1996) Measurement techniques and effects on in-plane permeability of woven cloths in RTM, Composites, part A, 27.5.1996, 401–8.Google Scholar
  4. 4.
    Hannoura, A. A. and Barenda, F. B. J. (1981) Non-Darcy flow: a state of the art, Proc. Euromech., 143, Delft, The Netherlands.Google Scholar
  5. 5.
    Injectex RTM: a solution to increasing cost-effectiveness of composites, Composites News 3, 1994, Ciba Geigy, 8–9.Google Scholar
  6. 6.
    Chick, J. P. and Rudd, C. D. (1996) Material characterization for flow modelling in structural reaction injection moulding. Polymer Composites 17(1), 124–35.CrossRefGoogle Scholar
  7. 7.
    Chan, A. W., Larvine, D. E. and Morgan, R. J. (1993) Anisotropic permeability of fibre preforms. Constant flow rate measurement, J. Compos. Mater., 27.996.CrossRefGoogle Scholar
  8. 8.
    Yates, B., McCalla, B., Phillips, L., Kingston-Lee, D. and Rogers, K. (1979) The thermal expansion of carbon fibre reinforced plastics. Part 5. The influence of matrix curing characteristics, J. Mat Sci. 14, 1207–17.CrossRefGoogle Scholar
  9. 9.
    Darcy, H. (1856) Les Fontaines publiques de la ville de Dijon, Paris: Delmont.Google Scholar
  10. 10.
    Chan, A. W. and Morgan, R. J. (1994) Computer modelling of liquid composite molding for 3-dimensional complex shaped structures. In Proc 10th ASM/ESD Advanced Composites Conference/Exposition, Dearborn, MI: ACCE, Nov., 341–5.Google Scholar
  11. 11.
    Lee, L. J., Young, W. B. and Lin, R. J. (1994) Mold filling and cure modelling of RTM and SRIM processes, Compos. Struct. 27, 109.CrossRefGoogle Scholar
  12. 12.
    Gauvin, R., Trochu, F., Boudreault, J. and Carreau, P. (1993) Finite element simulation of the resin transfer molding process, ECCM 6, Sept., Woodhead Publishing Ltd, 57–62.Google Scholar
  13. 13.
    Rudd, C. D. and Long, A. C. (1994) Design strategies for fibre preforms, Proc. 10th Annual ASM/ESD Advanced Composites Conference/Exposition, Dearborn, MI: ACCE, Nov.Google Scholar
  14. 14.
    Tucker, C. L. and Virlouvet, P. H. (1991) TIMS Users Manual Version 2.1, Polymer Processing Laboratory, Dept of Mechanical and Industrial Enginering, University of Illinois, Urbana.Google Scholar
  15. 15.
    Cai, Z. (1992) Analysis of mold filling in RTM process, Journal of Composite Materials 26(9), 1310–38.CrossRefGoogle Scholar
  16. 16.
    Gebart, B. R., Gudmunson, P. and Lundemo, C. Y. (1992) An evaluation of alternative injection strategies in RTM, Proc. 47th Annual Conf. Composites Institute, SPI, Feb.Google Scholar
  17. 17.
    Carman, P. C. (1937) Fluid flow through granular beds, Trans. Int. Chem. Eng. 15, 150–66.Google Scholar
  18. 18.
    Williams, J. G., Morris, C. E. M. and Ennis, B. C. (1974) Liquid flow through aligned fibre beds, Polymer Engineering and Science 14(6), June, 413–19.CrossRefGoogle Scholar
  19. 19.
    Rudd, C. D., Long, A. C, McGeehin, P. and Smith P. (1996) In plane permeability determination for simulation of liquid composite molding of complex shapes, Polymer Composites 17(1), Feb., 52–9.CrossRefGoogle Scholar
  20. 20.
    Moore, W. J. (1962) Physical Chemistry, London: Longman.Google Scholar
  21. 21.
    Williams, J. G., Morris, C. E. M. and Ennis, B. C. (1974) Liquid flow through aligned fibre beds, Polymer Engineering and Science 14(6), June, 413–19.CrossRefGoogle Scholar
  22. 22.
    Scott, F. N. (1988) Processing characteristics of polyester resin for the resin transfer moulding process, PhD Thesis, University of Nottingham.Google Scholar
  23. 23.
    Lin, R., Lee, L. J. and Liou, M. J. (1991) Non isothermal mould filling in RTM and SRIM, Proc. 49th Annual Technical Conference, ANTEC 91, SPE.Google Scholar
  24. 24.
    Advani, S. G. and Bruschke, M. V. (1994) Resin transfer moulding phenomena in polymeric composites. Chapter 12 of S. G. Advani (ed.), Flow and Rheology in Polymer Composites Manufacturing, Amsterdam: Elsevier Science BV.Google Scholar
  25. 25.
    Johnson, M. S., Rudd, C. D. and Hill, D. J. (1995) Cycle time reductions in resin transfer moulding using microwave preheating, Proc. Inst. Mech. Eng. 209, 443–53.CrossRefGoogle Scholar
  26. 26.
    Kenny, J. M., Maffezzoli, A. and Nicolais, L. (1990) A model for the thermal and chemorheological behaviour of thermoset processing (II) unsaturated polyester based composites, Composites Science and Technology 38, 339–58.CrossRefGoogle Scholar
  27. 27.
    Loos, A. C. and Springer, G. S. (1983) Curing of epoxy matrix composites, Journal of Composite Materials 17, 135–69.CrossRefGoogle Scholar
  28. 28.
    May, C. A. (1988) Epoxy Resins, Chemistry and Technology, New York: Marcel Dekker, Chapter 14.Google Scholar
  29. 29.
    ASTM D2566. Linear shrinkage of cured thermosetting casting resins during cure.Google Scholar

Copyright information

© Kevin Potter 1997

Authors and Affiliations

  • Kevin Potter
    • 1
  1. 1.Department of Aerospace EngineeringUniversity of BristolUK

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