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A toughened epoxy resin system from Huntsman Advanced Materials is being used by the University of Bayreuth’s Department of Polymer Engineering, in an on-going research programme analysing the effective use of carbon fibre-reinforced polymer (CFRP) for cryogenic liquid hydrogen storage systems within aerospace applications.
According to Huntsman, the system is currently focused on investigating the influence of the composite surface structure on the peel strength of metallised CFRP epoxies, the vessels are being produced using XU 3508 / Aradur 3486, a high toughness resin system from Huntsman, processed via Resin Transfer Moulding (RTM).
Highlighting the system’s high fracture toughness, the University of Bayreuth believes it is particularly well suited to cryogenic applications. Due to its chemical stability, it is also helping to optimise sandblasting pre-treatment processes on the composite surface.
Huntsman explains that traditional materials have been replaced in pursuit of greater weight and thus composites have continued to grow within the aerospace and automotive industries. The use of CFRP for cryogenic liquid hydrogen storage systems is gaining increasing attention from industrial and academic parties alike. As an energy carrier, liquid hydrogen offers much higher gravimetric energy density compared to gaseous and solid stored hydrogen, as well as conventional fuel systems.
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