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RTM Resin Content

  • 1.  RTM Resin Content

    This message was posted by a user wishing to remain anonymous
    Posted 02-03-2020 19:07
    This message was posted by a user wishing to remain anonymous

    What is the typical resin content for Resin Transfer Moulding (RTM) composite parts? 


  • 2.  RE: RTM Resin Content

    Posted 02-04-2020 11:48
    Typical fiber volume fractions for infusion are between 55-70%. Thus, resin volume fraction would be dependent upon this and many other variables such as the yarn size, fiber form (or weave style), channel area.  All of these factors and more contribute to the net fiber and resin content.  Abaris Training in Reno, NV offers a practical hands-on resin infusion class that also teaches all of this. Part of the class includes calculations of net resin volume requirements.  I hope this helps to answer your question and provide you a resource to further your knowledge.

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    Louis C. Dorworth
    Direct Services Manager
    Abaris Training Resources, Inc.
    Lou@abaris.com
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  • 3.  RE: RTM Resin Content

    Posted 02-05-2020 12:04
    The achievable fibre volume fractions will depend on the clamping force available on the mould and the reinforcement format, but might sensibly be around 20% for chopped strand/random swirl reinforcement, 50% for woven reinforcements, or 65% for unidirectional (including multi-axial non-crimp fabrics).  However for high volume fractions the permeability may be compromised by the reduced porespace!

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    John Summerscales
    Professor of Composites Engineering
    University of Plymouth
    Plymouth, United Kingdom.
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