MULTILAYER STRUCTURE FOR TRANSPORTING OR STORING HYDROGEN

• Main Authors: MARCOURT, Marjorie, DUFAURE, Nicolas, PRENVEILLE, Thomas
• Format: Patent
• Language: English
• Published: 29.08.2024
• Subjects: BLASTING; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; STORING OF DISTRIBUTING GASES OR LIQUIDS; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

Multilayer structure intended for the transportation, for the distribution and for the storage of hydrogen, including, from the inside toward the outside, at least one leaktightness layer (1) and at least one composite reinforcing layer (2), said innermost composite reinforcing layer being wound around said outermost adjacent leaktightness layer (1), said leaktightness layers having a composition predominantly including: at least one aliphatic polyamide thermoplastic polymer P1i, i=1 to n, n being the number of semicrystalline leaktightness layers, the Tm of which, as measured according to ISO 11357-3: 2013, is greater than 200° C., with the exclusion of a polyether block amide (PEBA), said polyamide thermoplastic polymer being a polyamide exhibiting a mean number of carbon atoms per nitrogen atom of from 7 to 9, up to 30% by weight of impact modifier, up to 1.5% by weight of plasticizer, said composition being devoid of nucleating agent.