Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector

Multilayer structure for transporting, distributing and storing hydrogen, comprising, from the inside to the outside, at least one sealing layer (1) and at least one composite reinforcing layer (2), the innermost composite reinforcing layer being wound around the outermost adjacent sealing layer (1), the sealing layers consisting of a composition predominantly comprising at least one semi-crystalline, long-chain polyamide thermoplastic polymer P1i (i = 1 to n, n being the number of sealing layers), the Tf of which, as measured according to ISO 11357-3: 2013, is greater than 160°C, with the exception of one polyether block amide (PEBA), up to 50% by weight of impact modifier relative to the total weight of the composition and up to 1.5% by weight of plasticiser relative to the total weight of the composition, the composition being free of nucleating agent, the at least one polyamide thermoplastic polymer of each sealing layer being able to be identical or different, and at least one of the composite reinforcing layers consisting of a fibrous material in the form of continuous fibres impregnated by a composition predominantly comprising at least one polymer P2j (j = 1 to m, m being the number of reinforcing layers), in particular an epoxy resin or epoxy-based resin, and the structure being free of an outermost layer adjacent to the outermost polyamide polymer composite reinforcing layer.

» Number: MX2022008891A (A)

» Publication Date: 15/08/2022

» Applicant: ARKEMA FRANCE?[FR]

» Inventor: DUFAURE NICOLAS?[FR]; DANG PATRICK (1)

» More Information

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