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

The invention relates to a multilayer structure for transporting, distributing and storing hydrogen, in particular for storing hydrogen, comprising, from the inside to the outside, at least one sealing layer (1) and at least one composite reinforcement layer (2), said innermost composite reinforcement layer (2) being welded to the outermost adjacent sealing layer (1), said sealing layers (1) consisting of a composition predominantly comprising: at least one semi-crystalline polyamide thermoplastic polymer P1i, i = 1 to n, n being the number of sealing layers, excluding an amide polyether block (PEBA), up to 50% by weight of impact modifier, in particular up to less than 15% by weight of impact modifier, in particular up to 12% by weight of impact modifier relative to the total weight of the composition, up to 1.5% by weight of plasticizer relative to the total weight of the composition, wherein the at least one polyamide thermoplastic polymer of each sealing layer may be the same or different, and at least one of said composite reinforcement layers consisting of a fibrous material in the form of continuous fibers, which is impregnated with a composition predominantly comprising at least one semi-crystalline polyamide polymer P2j, j = 1 to m, m being the number of reinforcement layers, wherein the number of carbon atoms per amide function of the polyamide of said outermost adjacent sealing layer (1) differs from that of the polyamide of said innermost reinforcement layer (2) by at most 20%.

» Number: MX2022008890A (A)

» Publication Date: 15/08/2022

» Applicant: ARKEMA FRANCE?[FR]

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

» More Information

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