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, a sealing layer (1) and at least one composite reinforcement layer (2), said sealing layer comprising from the inside to the outside: a layer (a) consisting of a composition predominantly comprising: a short-chain polyamide thermoplastic polymer, more than 15% and up to 50% by weight of impact modifier, or predominantly comprising: a semi-crystalline long-chain polyamide thermoplastic polymer, up to 50% by weight of impact modifier relative to the total weight of the composition, up to 3% by weight of plasticizer relative to the total weight of the composition; optionally a layer of binder; a hydrogen barrier layer, in particular made of a fluoropolymer, in particular of PVDF, or of EVOH; optionally a layer of binder; a layer (b) consisting of a composition predominantly comprising: a short-chain polyamide thermoplastic polymer, more than 15% and up to 50% by weight of impact modifier, or predominantly comprising: a semi-crystalline long-chain polyamide thermoplastic polymer, up to 50% by weight of impact modifier, up to 3% of weight of plasticizer, said innermost composite reinforcement layer (2) being wound around said sealing layer (1), 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 polymer P1j, j = 1 to m, m being the number of reinforcement layers.

» Number: MX2022008889A (A)

» Publication Date: 15/08/2022

» Applicant: ARKEMA FRANCE?[FR]

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

» More Information

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