HexFlow® Infusion Resins

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HexFlow® infusion resins provide cost-effective manufacturing of aerospace parts without the investment in autoclave equipment.

As an industry innovator Hexcel has optimized its knowledge of resins and reinforcements to develop new solutions for faster, more cost-effective ways of manufacturing high performance composite parts. 

Infusion Resins1

HexFlow® Infusion Resins for Aerospace

Resin Transfer Molding (RTM) and Vacuum Infusion are composite manufacturing methods that are particularly suitable for low- to medium-volume production rates, allowing high quality components to be created without using autoclaves. Large complex shapes can be achieved with good surface quality and a reduce part count.
 
HexFlow® RTM6 is the aerospace industry standard for resin transfer molding, manufactured in Europe and the U.S. and qualified by all major OEMs and Tier 1s. This mono-component resin system has 20 years of proven service and is favored for its high glass transition temperatures and flexibility in injection and cure cycle parameters.
 
In response to customer demand Hexcel has developed a bi-component format of RTM6 called HexFlow® RTM6-2. With the same chemical composition as RTM6, this provides the same high mechanical properties as the original resin and is easy to transport by air or sea. At customer facilities, this system can be stored at +5°C for 12 months (instead of -18°C for 9 months for HexFlow® RTM6). This new form of HexFlow® RTM6-2 is available in larger drums (up to 200kg). 

Also available is HexFlow® RTM651 – a premixed bismaleimide system for service temperatures to 232°C (450°F).
 
Hexcel also offers a VaRTM resin systems VRM37 –  targeted at secondary and primary aerospace structures.
 
HexFlow® resins are fully compatible with the extensive range of HexForce® reinforcement fabrics. Our Technical Support Engineers are on hand to assist you with the optimum resin and reinforcement selection. 
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Technical Resources

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RTM/LRI

Products Downloads
RTM6 / RTM6-2 Global Version
RTM230 ST Global Version
RTM250 ST Global Version

HiFlow Resins

Products Downloads
HiFlow1078-1 Global Version
HiFlow® RTM200 Global Version

Additional Resources

FAQs

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A composite material made from combining high performance reinforcement fibers or fabrics with a thermoset or thermoplastic resin matrix. When cured under high temperature and pressure, exceptional structural properties are achieved.

Prepregs are used for a wide range of applications requiring high strength and stiffness combined with low weight. The use of prepreg was pioneered by the aerospace industry, closely followed by developments for sports goods, performance boats, F1 and Indy cars. Recent innovations have included train bogies and wind turbine blades.

Hexcel prepregs are based on four main matrix types: epoxy, phenolic, bismaleimide and cyanate ester. Reinforcements include carbon, glass, aramid and hybrid fibers in both woven and unidirectional form.

Selection is governed by the achievable cure temperature and the maximum service temperature of the component. Consult the prepreg selector guide and Hexcel’s Technical Support department for advice on prepreg selection.

Please note that Hexcel’s lowest temperature curing prepregs are currently HexPly® M34 and HexPly® M79 for industrial applications.

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