EP4136180A1 - Mehrschichtige struktur zum transport oder zur lagerung von wasserstoff - Google Patents

Mehrschichtige struktur zum transport oder zur lagerung von wasserstoff

Info

Publication number
EP4136180A1
EP4136180A1 EP21725566.0A EP21725566A EP4136180A1 EP 4136180 A1 EP4136180 A1 EP 4136180A1 EP 21725566 A EP21725566 A EP 21725566A EP 4136180 A1 EP4136180 A1 EP 4136180A1
Authority
EP
European Patent Office
Prior art keywords
polyamide
hydrogen
multilayer structure
composition
weight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21725566.0A
Other languages
English (en)
French (fr)
Inventor
Nicolas Dufaure
Antoine GOUPIL
Olivier Merle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkema France SA
Original Assignee
Arkema France SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arkema France SA filed Critical Arkema France SA
Publication of EP4136180A1 publication Critical patent/EP4136180A1/de
Pending legal-status Critical Current

Links

Classifications

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    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K3/1025—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by non-chemical features of one or more of its constituents
    • C09K3/1028—Fibres
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    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • B32B17/04—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments bonded with or embedded in a plastic substance
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    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0604—Liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/066—Plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F17C2203/0673—Polymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • F17C2209/2118—Moulding by injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • F17C2209/2127—Moulding by blowing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/232—Manufacturing of particular parts or at special locations of walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0184—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Definitions

  • TITLE MULTI-LAYER STRUCTURE FOR THE TRANSPORT OR STORAGE OF
  • the present patent application relates to multilayer structures intended for the transport, distribution or storage of hydrogen, in particular for the distribution or storage of hydrogen, in particular for the storage of hydrogen, comprising a layer of hydrogen.
  • sealant consisting of a polyamide composition and the use of said sealant layer satisfy a test for contaminants present in hydrogen and extracted from said sealant layer by hydrogen, and their manufacturing process.
  • Hydrogen tanks are a subject that is currently attracting a lot of interest from many manufacturers, especially in the automotive sector.
  • One of the goals is to offer vehicles that pollute less and less.
  • electric or hybrid vehicles comprising a battery aim to gradually replace thermal vehicles, such as gasoline or diesel vehicles.
  • thermal vehicles such as gasoline or diesel vehicles.
  • the battery is a relatively complex component of the vehicle.
  • the electric vehicle still suffers today from several problems, namely the autonomy of the battery, the use in these rare earth batteries whose resources are not inexhaustible, recharging times much longer than the durations. tank filling, as well as a problem of electricity production in the different countries to be able to recharge the batteries.
  • Hydrogen therefore represents an alternative to the electric battery since hydrogen can be transformed into electricity by means of a fuel cell and thus power electric vehicles.
  • Supplying the fuel cell with hydrogen therefore requires the presence of both a hydrogen storage tank in the vehicle and a pipe for transporting the hydrogen from the tank to the fuel cell.
  • Hydrogen tanks or hydrogen transport pipes generally consist of a metallic or thermoplastic liner (liner or sealing layer) which must prevent the permeation of hydrogen.
  • a metallic or thermoplastic liner liner or sealing layer
  • thermoplastic resin liner or sealing sheath
  • a reinforcing structure made up of fibers (glass, aramid, carbon) also called sheath or reinforcing layer which allow working at much higher pressures. while reducing the mass and avoiding the risk of explosive rupture in the event of severe external attacks.
  • the fuel cell is very sensitive to various contaminants which degrade its performance and durability.
  • a tank or a hydrogen transport pipe used with a fuel cell must not only have the basic characteristics listed above but also the hydrogen after contact with the sealing layer of said tank and / or pipe. must contain only a minimum of contaminants extracted from said sealing layer.
  • This double problem is solved by providing a multilayer structure of the present invention intended for the transport, distribution or storage of hydrogen.
  • the terms “liner” and “sealing sheath” have the meaning same meaning.
  • the present invention therefore relates to the use of a sealing layer (1) consisting of a composition comprising at least one polyamide for the preparation of a multilayer structure intended for the transport, distribution or storage of hydrogen. , in particular for the distribution or storage of hydrogen, in particular for the storage of hydrogen, said sealing layer satisfying a test for contaminants present in the hydrogen and extracted from said sealing layer after contact with the hydrogen therewith, said test being carried out as defined in the CSA / ANSI CHMC 2: 19 standard, the total proportion of said contaminants extracted in hydrogen, being less than or equal to 3% by weight, in particular less than 2 % by weight of the sum of the constituents of said composition.
  • a sealing layer (1) consisting of a composition comprising at least one polyamide made it possible to prepare a multilayer structure intended for the transport, distribution or storage of hydrogen, exhibiting the basic characteristics listed above but that it also made it possible to limit the proportion of contaminants present in the hydrogen and extracted after contact of the hydrogen with said sealing layer.
  • multilayer structure is meant a tank comprising or consisting of several layers, namely several sealing layers and several reinforcing layers, or one sealing layer and several reinforcing layers, or several sealing layers and a backing layer or a waterproofing layer and a backing layer.
  • the multilayer structure in the present invention also denotes a pipe or a tube intended for transporting hydrogen from the tank to the fuel cell and which comprises or consists of several layers, namely several sealing layers and several outer layers, or a sealing layer and a plurality of outer layers, or a plurality of sealing layers and an outer layer or a sealing layer and an outer layer.
  • sealing layer satisfying a test for contaminants present in hydrogen and extracted from said sealing layer by hydrogen means that the proportion of contaminants present in hydrogen and originating from the layer of leaktightness after contact with hydrogen, whether it is a tank or a pipe, does not exceed the limit values preventing the correct functioning of the fuel cell.
  • the CSA / ANSI CHMC 2 19 standard details the procedure used to determine the volatile components in the headspace of a polymer upon exposure to hydrogen in service.
  • the expression "after contact of hydrogen therewith” means as above an exposure to hydrogen during service.
  • the test equipment should include the following: a) cryofocus to preconcentrate gas samples; b) a gas chromatograph using a suitable column, connected in series with a suitable mass selective detector; c) Headspace vials (40 ml), septa, ring closures and vial sealer; d) an analytical balance capable of weighing up to 60,0001 g; and e) a convection oven capable of maintaining a temperature of 70 ⁇ 5 ° C.
  • the conditioning hydrogen gas should be of known composition and purity, as described below.
  • the purity of the hydrogen gas used to fill the test chamber should, as a minimum, conform to ISO 14687: 2019, parts 1 to 3, or SAE J2719 (2015).
  • ISO 14687-2 defines the strictest hydrogen quality specification, with the lowest threshold values for each impurity among these ISO standards (see tables 1).
  • SAE J2719 also applies to Proton Exchange Membrane (PEM) fuel cell vehicles and is harmonized with ISO 14687-2.
  • the temperature at which measurements of the hydrogen transmission rate are made should be checked to within ⁇ 1 ° C.
  • the test pressure should remain constant within 1% of the test value.
  • test procedure is described in ISO 14687: 2019 in section 5.6.
  • contaminant is understood in the broad sense of the term from the moment when said contaminant is extracted from said sealing layer by hydrogen and is not already present in the hydrogen which is introduced into said multilayer structure to make operate the fuel cell of the vehicle, for example due to the process for obtaining hydrogen.
  • the term contaminant covers metal cations such as K + , Cu 2+ , Ni 2+ and Fe 3+ which can be produced by stabilizers used in polyamides, organic or metal stabilizers as such, plasticizers , oligomers, in particular caprolactam and its cyclic dimer 1, 8-diazacyclotetradecane-2,7-dione (DCDD), volatile organic compounds such as NH3, NOx, SOx, N2, benzoic compounds, 03, l ' water absorbed by the polyamide after manufacture of the waterproofing layer, fatty substances such as oil.
  • metal cations such as K + , Cu 2+ , Ni 2+ and Fe 3+ which can be produced by stabilizers used in polyamides, organic or metal stabilizers as such, plasticizers , oligomers, in particular caprolactam and its cyclic dimer 1, 8-diazacyclotetradecane-2,7-dione (DCDD), volatile organic compounds such as NH3, NOx, SOx
  • Volatile organic compounds therefore exclude all the other materials mentioned in the above list.
  • the total proportion of said contaminants extracted in hydrogen is less than or equal to 3% by weight, in particular less than 2% by weight of the sum of the constituents of said composition. Consequently, this total proportion of said extracted contaminants does not take take into account the proportion of contaminants that would come from the hydrogen preparation process or from any other source.
  • the total proportion of said contaminants extracted in hydrogen is from 0.01% to 3%, in particular from 0.01% to 2%, more particularly from 0.01% to 1%, in particular from 0, 01% to 0.5% by weight.
  • the contaminants extracted are chosen from plasticizers, stabilizers, oligomers, water, a fatty substance, volatile organic compounds and a mixture of these.
  • the proportion by weight of each individual contaminant extracted is less than or equal to 1%.
  • the constitution of the contaminants extracted is as follows: up to 1% plasticizers, up to 0.5% stabilizers, up to 0.5% oligomers, up to 0.5% water, up to 0.5% fatty substance, and up to 0.5% volatile organic compounds, the sum of the contaminants extracted being less than or equal to 3%, in particular less than 2% by weight of the sum of the constituents of said composition.
  • the total proportion of said contaminants extracted in hydrogen is from 0.01% to 3%, in particular from 0.01% to 2%, more particularly from 0, 01% to 1%, especially from 0.01% to 0.5% by weight.
  • the proportion by weight of each individual contaminant extracted is less than or equal to 1%.
  • the extracted contaminants are chosen from stabilizers, water, oil, volatile organic compounds and a mixture thereof.
  • the proportion by weight of each individual contaminant extracted is less than or equal to 0.5%.
  • the constitution of the contaminants extracted is as follows: up to 0.5% stabilizers, up to 0.5% water, up to 0.5% fatty substance , and up to 0.5% of volatile organic compounds, the sum of the contaminants being less than or equal to 2% by weight of the sum of the constituents of said composition.
  • the total proportion of said contaminants extracted in hydrogen is from 0.01% to 2%, more particularly from 0.01% to 1%, in particular from 0.01 % to 0.5% by weight.
  • the proportion by weight of each individual contaminant extracted is less than or equal to 0.5%.
  • the composition which constitutes said sealing layer (1) comprises by weight: at least 63.5% of polyamide, from 0 to 30% of modifier impact, in particular from 0 to less than 15% of impact modifier, in particular from 0 to 12% of impact modifier, from 0 to 1.5% of plasticizer, and from 0 to 5% by weight of additives, the sum of constituents of the composition being equal to 100%.
  • said composition of this first embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier.
  • said composition of this first embodiment comprises from 0.1 to 1.5% of plasticizer.
  • composition of this first embodiment comprises from 0.1 to 5% by weight of additives
  • said composition of this first embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier and from 0.1 to 1, 5% plasticizer.
  • said composition of this first embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier and from 0.1 to 5% by weight of additives.
  • said composition of this first embodiment comprises from 0.1 to 1.5% of plasticizer and from 0.1 to 5% by weight of additives
  • said composition of this first embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier, from 0.1 to 1, 5% plasticizer and 0.1 to 5% by weight additives.
  • the composition which constitutes said sealing layer (1) in particular in the first variant defined above, consists by weight: of at least 63.5% of polyamide, from 0 to 30 % of impact modifier, in particular from 0 to less than 15% of impact modifier, in particular from 0 to 12% of impact modifier, from 0 to 1.5% of plasticizer, and from 0 to 5% by weight of additives, the sum of the constituents of the composition being equal to 100%.
  • said composition of this second embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier.
  • said composition of this second embodiment comprises from 0.1 to 1.5% of plasticizer.
  • said composition of this second embodiment comprises from 0.1 to 5% by weight of additives.
  • said composition of this second embodiment comprises from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier and from 0.1 to 1.5% of plasticizer.
  • said composition of this second embodiment comprises from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier and from 0.1 to 5% by weight of additives.
  • said composition of this second embodiment comprises from 0.1 to 1.5% of plasticizer and from 0.1 to 5% by weight of additives.
  • said composition of this second embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier, from 0.1 to 1, 5% plasticizer and 0.1 to 5% by weight additives.
  • the composition which constitutes said sealing layer (1) comprises by weight: at least 63.5% of polyamide, from 0 to 30% of modifier impact, in particular from 0 to less than 15% of impact modifier, in particular from 0 to 12% of impact modifier, and from 0 to 5% by weight of additives, the sum of the constituents of the composition being equal to 100%.
  • said composition of this third embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier.
  • said composition of this third embodiment comprises from 0.1 to 5% by weight of additives.
  • said composition of this third embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier and from 0.1 to 5% by weight of additives.
  • the composition which constitutes said sealing layer (1) in particular in the second variant defined above, consists by weight: of at least 63.5% of polyamide, from 0 to 30 % of impact modifier, in particular from 0 to less than 15% of impact modifier, in particular from 0 to 12% of impact modifier, and from 0 to 5% by weight of additives, the sum of the constituents of the composition being equal to 100%.
  • said composition of this fourth embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier.
  • said composition of this fourth embodiment comprises from 0.1 to 5% by weight of additives.
  • said composition of this fourth embodiment comprises from 1 to 30% of impact modifier, in particular from 1 to less than 15% of impact modifier, in particular from 1 to 12% of impact modifier and from 0.1 to 5% by weight of additives.
  • the polyamide can be a homopolyamide or a copolyamide or a mixture thereof.
  • Polyamide is a semi-crystalline polyamide, that is to say a material generally solid at room temperature, and which softens during an increase in temperature, in particular after passing its glass transition temperature (Tg), and which may present a clear melting on passing of its so-called melting temperature (Tm), and which becomes solid again when the temperature drops below its crystallization temperature.
  • Tg glass transition temperature
  • Tm melting temperature
  • Tg, Te and Tf are determined by differential scanning calorimetry (DSC) according to standard 11357-2: 2013 and 11357-3: 2013 respectively.
  • the number-average molecular mass Mn of said semi-crystalline polyamide is preferably in a range from 10,000 to 85,000, in particular from 10,000 to 60,000, preferably from 10,000 to 50,000, even more preferably from 12,000 to 50,000. These Mn values may correspond. at inherent viscosities greater than or equal to 0.8 as determined in m-cresol according to standard ISO 307: 2007 but by changing the solvent (use of m-cresol instead of sulfuric acid and the temperature being 20 ° C).
  • the polyamide is chosen from an aliphatic polyamide, a semi-aromatic polyamide and a mixture of the two, advantageously an aliphatic polyamide.
  • Said aliphatic polyamide can be obtained from the polycondensation: at least one C 6 to C 18 amino acid, preferably C 8 to C 18, more preferably C 10 to C 18, even more preferably C 10 to C 12, in particular Cn; or at least one C6 to Cie lactam, preferably C8 to C 18 , more preferably C 10 to Cie, even more preferably C10 to C12, in particular C12; or at least one C4-C36 aliphatic diamine Ca, in particular C6-C36, preferably O Q - Ci 8 , preferably C6-C12, more preferably C10-C12 with at least one Cb C4-C36 aliphatic diacid, in particular in C6-C36, preferentially C6-C18, preferentially C10-C18, more preferentially C10-C12.
  • a C to C 12 amino acid is in particular 6-aminohexanoic acid, 9-aminononanoic acid, 10-aminodecanoic acid, 10-aminoundecanoic acid, 12-aminododecanoic acid and 11-aminoundecanoic acid as well as its derivatives, in particular N-heptyl-11-aminoundecanoic acid.
  • said at least one semi-crystalline aliphatic polyamide is obtained from the polycondensation of at least one amino acid, it can therefore comprise a single amino acid or several amino acids.
  • said semi-crystalline aliphatic polyamide is obtained from the polycondensation of a single amino acid and said amino acid is chosen from 11-aminoundecanoic acid and 12-aminododecanoic acid, advantageously 11-aminoundecanoic acid.
  • the lactam in O Q to C12 is in particular caprolactam, decanolactam, undecanolactam, and lauryllactam.
  • said at least one semi-crystalline aliphatic polyamide is obtained from the polycondensation of at least one lactam, it can therefore comprise a single lactam or several lactams.
  • said at least one semi-crystalline aliphatic polyamide is obtained from the polycondensation of a single lactam and said lactam is chosen from lauryllactam and unecanolactam, advantageously lauryllactam.
  • the Ca diamine can be linear or branched. Advantageously, it is linear.
  • Said at least one C4-C36 diamine Ca can in particular be chosen from butanemethylenediamine, 1,5-pentamethylenediamine, 1,6-hexamethylenediamine, 1,7-heptamethylenediamine, 1,8-octamethylenediamine, 1,9 -nonamethylenediamine, 1,10- decamethylenediamine, 1,11-undecamethylenediamine, 1,12-dodecamethylenediamine, 1, 13-tridecamethylenediamine, 1,14-tetradecamethylenediamine, 1,16-hexadecamethylenediamine and 1,16-hexadecamethylenediamine and 1,18-hexadecamethylenediamine and 1,18-hexadecamethylenediamine , octadecenediamine, eicosanediamine, docosanediamine and diamines obtained from fatty acids.
  • said at least one Ca diamine is C6-C36 and chosen from 1,6-hexamethylenediamine, 1,7-heptamethylenediamine, 1,8-octamethylenediamine, 1,9- nonamethylenediamine, 1, 10-decamethylenediamine, 1, 11-undecamethylenediamine, 1, 12-dodecamethylenediamine, 1, 13-tridecamethylenediamine, 1, 14-tetradecamethylenediamine, 1, 16-hexadecamethylenediamine, 1, 16-hexadecamethylenediamine, 18ediamine and 1 roctadecenediamine, reicosanediamine, docosanediamine and diamines obtained from fatty acids.
  • Said at least one Cb C4 to C36 dicarboxylic acid can be chosen from butanedioic acid, pentanedioic acid, adipic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, brassylic acid, tetradecanedioic acid, pentadecanedioic acid, hexadecanedioic acid, octadecanedioic acid, and diacids obtained from fatty acids.
  • the diacid can be linear or branched. Advantageously, it is linear.
  • the aliphatic polyamide is chosen from PA6, PA66, PA11, PA12, PA610, PA612, PA1010, PA1012 and PA1212.
  • Said semi-aromatic polyamide can be, in particular, a semi-aromatic polyamide of formula X / YAr, as described in EP1505099, in particular a semi-aromatic polyamide of formula A / XT in which A is chosen from a unit obtained from an amino acid as defined above, a unit obtained from a lactam as defined above and a unit corresponding to the formula (Ce diamine).
  • (Cd diacid) with c representing the number of carbon atoms of the diamine and d representing the number of carbon atoms of the diacid, c and d each being between 4 and 36, advantageously between 9 and 18, the unit (diamine in Ce) being chosen from aliphatic diamines, linear or branched, as defined above, cycloaliphatic diamines and alkylaromatic diamines and the unit (diacid in Cd) being chosen from aliphatic, linear or branched diacids, as defined above, cycloaliphatic diacids and aromatic diacids;
  • XT denotes a unit obtained from the polycondensation of a Cx diamine and terephthalic acid, with x representing the number of carbon atoms of the Cx diamine, x being between 5 and 36, advantageously between 9 and 18, in particular a polyamide of formula A / 5T, A / 6T, A / 9T, A / 10T or A / 11 T, A being as defined above, in particular a polyamide chosen from a PA MPMDT / 6T, one PA11 / 10T, one PA 5T / 10T, one PA 11 / BACT, one PA 11 / 6T / 10T, one PA MXDT / 10T, one PA MPMDT / 10T, one PA BACT / 10T, one PA BACT / 6T, PA BACT / 10T / 6T, one PA 11 / BACT / 6T, PA 11 / MPMDT / 10T, PA 11 / B
  • T is terephthalic acid
  • MXD is m-xylylenediamine
  • MPMD is methylpentamethylene diamine
  • BAC is bis (aminomethyl) cyclohexane.
  • Said semi-aromatic polyamide can also be a polyamide of formula ZAr in which Z is a unit resulting from the polycondensation of at least one aliphatic diamine in Ca as defined above and Ar is an aromatic dicarboxylic acid, in particular the terepthalic acid, isophthalic acid and naphthalenic acid.
  • the polyamide is aliphatic and selected from PA6, PA66, PA11, PA12, PA610, PA612, PA1010, PA1012 and PA1212.
  • the polyamide is semi-aromatic and chosen from polyamide 11 / 5T, 11 / 6T, 11/1 OT, MXDT / 10T, MPMDT / 10T and BACT / 10T.
  • said polyamide of said composition is washed beforehand at least once with a system chosen from a polar solvent, in particular methanol, water or water vapor, or a mixture of these. this.
  • the impact modifier can be any impact modifier from the moment when a polymer of lower modulus than that of the resin, exhibiting good adhesion with the matrix, so as to dissipate the cracking energy.
  • the impact modifier is advantageously constituted by a polymer having a flexural modulus of less than 100 MPa measured according to the ISO 178 standard and of Tg less than 0 ° C (measured according to the 11357-2 standard at the inflection point of the DSC thermogram ), in particular a polyolefin.
  • PEBAs are excluded from the definition of impact modifiers.
  • the polyolefin of the impact modifier can be functionalized or non-functionalized or be a mixture of at least one functionalized and / or at least one non-functionalized.
  • the polyolefin has been designated by (B) and functionalized polyolefins (B1) and unfunctionalized polyolefins (B2) have been described below.
  • An unfunctionalized polyolefin (B2) is conventionally a homopolymer or copolymer of alpha olefins or diolefins, such as, for example, ethylene, propylene, butene-1, octene-1, butadiene.
  • alpha olefins or diolefins such as, for example, ethylene, propylene, butene-1, octene-1, butadiene.
  • LDPE low density polyethylene
  • HDPE high density polyethylene
  • LLDPE linear low density polyethylene, or linear low density polyethylene
  • VLDPE very low density polyethylene, or very low density polyethylene
  • metallocene polyethylene metallocene polyethylene
  • ethylene / alpha-olefin copolymers such as ethylene / propylene, EPR (abbreviation of ethylene-propylene-rubber) and ethylene / propylene / diene (EPDM).
  • EPR abbreviation of ethylene-propylene-rubber
  • EPDM ethylene / propylene / diene
  • SEBS ethylene-butene / styrene
  • SBS styrene / butadiene / styrene
  • SIS styrene / isoprene / styrene
  • SEPS styrene / ethylene-propylene / styrene
  • the functionalized polyolefin (B1) can be a polymer of alpha olefins having reactive units (the functionalities); such reactive units are the acid, anhydride, or epoxy.
  • reactive units are the acid, anhydride, or epoxy.
  • a functionalized polyolefin is for example a PE / EPR mixture, the weight ratio of which can vary widely, for example between 40/60 and 90/10, said mixture being co-grafted with an anhydride, in particular maleic anhydride, according to a degree of grafting, for example from 0.01 to 5% by weight.
  • the functionalized polyolefin (B1) can be chosen from the following (co) polymers, grafted with maleic anhydride or glycidyl methacrylate, in which the degree of grafting is for example from 0.01 to 5% by weight:
  • ethylene / alpha-olefin copolymers such as ethylene / propylene, EPR (abbreviation of ethylene-propylene-rubber) and ethylene / propylene / diene (EPDM).
  • EPR abbreviation of ethylene-propylene-rubber
  • EPDM ethylene / propylene / diene
  • SEBS ethylene-butene / styrene
  • SBS styrene / butadiene / styrene
  • SIS styrene / isoprene / styrene
  • SEPS styrene / ethylene-propylene / styrene
  • alkyl (meth) acrylate copolymers containing up to 40% by weight of alkyl (meth) acrylate;
  • the functionalized polyolefin (B1) can also be chosen from ethylene / propylene copolymers predominantly in propylene grafted with maleic anhydride and then condensed with mono-amine polyamide (or a polyamide oligomer) (products described in EP-A-0342066) .
  • the functionalized polyolefin (B1) can also be a co- or ter polymer of at least the following units: (1) ethylene, (2) alkyl (meth) acrylate or vinyl ester of saturated carboxylic acid and (3) anhydride such as maleic anhydride or (meth) acrylic acid or epoxy such as glycidyl (meth) acrylate.
  • (meth) acrylic acid can be salified with Zn or Li.
  • alkyl (meth) acrylate in (B1) or (B2) denotes methacrylates and acrylates of C1 to C8 alkyl, and may be chosen from methyl acrylate, ethyl acrylate , n-butyl acrylate, isobutyl acrylate, ethyl-2-hexyl acrylate, cyclohexyl acrylate, methyl methacrylate and ethyl methacrylate.
  • the aforementioned polyolefins (B1) can also be crosslinked by any suitable process or agent (diepoxy, diacid, peroxide, etc.); the term functionalized polyolefin also includes mixtures of the abovementioned polyolefins with a difunctional reagent such as diacid, dianhydride, diepoxy, and the like. capable of reacting with these or mixtures of at least two functionalized polyolefins capable of reacting with each other.
  • a difunctional reagent such as diacid, dianhydride, diepoxy, and the like.
  • copolymers mentioned above, (B1) and (B2) can be copolymerized in a random or block fashion and have a linear or branched structure.
  • MFI melt flow index
  • the unfunctionalized polyolefins (B2) are chosen from homopolymers or copolymers of polypropylene and any homopolymer of ethylene or copolymer of ethylene and of a comonomer of higher alpha olefinic type such as butene, hexene, octene or 4-methyl 1-Pentene. Mention may be made, for example, of PPs, high density PE, medium density PE, linear low density PE, low density PE, very low density PE. These polyethylenes are known to those skilled in the art as being produced according to a "radical” process, according to a “Ziegler” type catalysis or, more recently, according to a so-called "metallocene” catalysis.
  • the functionalized polyolefins (B1) are chosen from any polymer comprising alpha olefinic units and units bearing polar reactive functions such as epoxy, carboxylic acid or carboxylic acid anhydride functions.
  • polymers mention may be made of the ter polymers of ethylene, of alkyl acrylate and of maleic anhydride or of glycidyl methacrylate, such as Lotader® from the Applicant or polyolefins grafted with l.
  • maleic anhydride such as Orevac® from the Applicant as well as ter polymers of ethylene, of alkyl acrylate and of (meth) acrylic acid.
  • said constituent composition of said sealant layer or layers is devoid of polyether block amide (PEBA).
  • PEBA polyether block amide
  • said transparent composition is devoid of core-shell particles or “core-shell” core-shell polymers.
  • core-shell particle it is necessary to understand a particle of which the first layer forms the core and the second or all of the following layers form the respective shell.
  • the core-shell particle can be obtained by a multi-step process comprising at least two steps. Such a method is described for example in documents US2009 / 0149600 or EP0722961.
  • the proportion of impact modifier is then from 0 to less than 10% by weight, in particular from 0 to 8% by weight, in particular from 1 to less than 10% by weight, especially 1 to 8% by weight.
  • said composition also comprises from 0.1 to 5% by weight of additives.
  • the plasticizer can be a plasticizer commonly used in compositions based on polyamide (s).
  • a plasticizer which has good thermal stability so that no fumes are formed during the stages of mixing the various polymers and of processing the composition obtained.
  • this plasticizer can be chosen from: benzene sulfonamide derivatives such as n-butyl benzene sulfonamide (BBSA), ortho and para isomers of ethyl toluene sulfonamide (ETSA), N-cyclohexyl toluene sulfonamide and N- (2-hydroxypropyl) benzenesulfonamide (HP-BSA), esters of hydroxybenzoic acids such as 2-ethylhexyl para-hydroxybenzoate (EHPB) and 2-decylhexyl para-hydroxybenzoate (HDPB), esters or ethers of tetrahydrofurfuryl alcohol, such as oligoethyleneoxytetrahydrofurfurylalcohol, and esters of citric acid or of hydroxymalonic acid, such as oligoethyleneoxymalonate.
  • BBSA n-butyl benzene sulfonamide
  • ESA
  • a preferred plasticizer is n-butyl benzene sulfonamide (BBSA).
  • Another more particularly preferred plasticizer is N- (2-hydroxy-propyl) benzene sulfonamide (HP-BSA).
  • HP-BSA N- (2-hydroxy-propyl) benzene sulfonamide
  • the additives can be selected from an antioxidant, a heat stabilizer, a UV absorber, a light stabilizer, a lubricant, an inorganic filler, a flame retardant, a nucleating agent and a colorant.
  • the present invention relates to a multilayer structure comprising at least one sealing layer (1) as defined above.
  • the total proportion of said contaminants extracted and present in the hydrogen is less than or equal to 3% by weight, in particular less than 2% by weight of the sum of the constituents of the composition constituting said waterproofing layer, determined according to the test defined in the CSA / ANSI CHMC 2: 19 standard.
  • said multilayer structure corresponds to a reservoir and further comprises at least one composite reinforcing layer (2), said sealing layer being in contact with hydrogen.
  • Said multilayer structure can therefore comprise at least one waterproofing layer and at least one composite reinforcing layer which is wrapped around the waterproofing layer and which may or may not adhere to each other.
  • said sealing and reinforcing layers do not adhere to each other and consist of compositions which respectively comprise different polymers.
  • said different polymers can be of the same type.
  • one of the two composite sealing and reinforcing layers consists of a composition comprising an aliphatic polyamide
  • the other layer consists of a composition comprising a polyamide which is not aliphatic and which is for example a semi-aromatic polyamide so as to have a high tg polymer as the matrix of the composite reinforcement.
  • Said multilayer structure can comprise up to 10 waterproofing layers and up to 10 composite reinforcement layers of different types. It is obvious that said multilayer structure is not necessarily symmetrical and that it can therefore comprise more sealing layers than composite layers or vice versa, but there cannot be alternation of layers and of reinforcing layer.
  • said multilayer structure comprises one, two, three, four, five, six, seven, eight, nine or ten sealing layers and one, two, three, four, five, six, seven, eight, nine or ten layers composite reinforcement.
  • said multilayer structure comprises one, two, three, four or five waterproofing layers and one, two, three, four or five composite reinforcement layers.
  • said multilayer structure comprises one, two or three waterproofing layers and one two or three composite reinforcement layers.
  • said multilayer structure comprises a single waterproofing layer and several reinforcing layers, said adjacent reinforcing layer being wrapped around said waterproofing layer and the other reinforcing layers being wrapped around the reinforcing layer. directly adjacent.
  • said multilayer structure comprises a single reinforcing layer and several sealing layers, said reinforcing layer being wrapped around said adjacent sealing layer.
  • said multilayer structure comprises a single sealing layer and a single composite reinforcing layer, said reinforcing layer being wrapped around said sealing layer.
  • each sealing layer consists of a composition comprising the same type of polyamide.
  • polystyrene resin By the same type of polymer is meant, for example, a polyamide which can be an identical or different polyamide depending on the layers.
  • each reinforcing layer consists of a composition comprising the same type of polymer P2j, in particular an epoxy or epoxy-based resin.
  • each sealing layer comprises the same type of polyamide and each reinforcing layer comprises the same type of polymer P2j, in particular an epoxy or epoxy-based resin.
  • the P2j polyamide is identical for all the reinforcing layers.
  • said polymer P2j is an epoxy resin or an epoxy-based resin.
  • the polyamide is identical for all the sealing layers.
  • said polyamide of the waterproofing layer is an aliphatic polyamide, in particular PA6, PA66, PA610, PA612, PA1010, PA 1012, PA 1212, PA11, PA12, in particular PA 11 or PA12 and said polymer P2j is a semi polyamide.
  • -aromatic in particular chosen from a PA MPMDT / 6T, a PA11 / 10T, a PA 11 / BACT, a PA 5T / 10T, a PA 11 / 6T / 10T, a PA MXDT / 10T, a PA MPMDT / 10T, one PA BACT / 10T, one PA BACT / 6T, PA BACT / 10T / 6T, one PA 11 / BACT / 6T, PA 11 / MPMDT / 6T, PA 11 / MPMDT / 10T, PA 11 / BACT / 10T, one PA and 11 / MXDT / 10T.
  • said multilayer structure consists of a single reinforcing layer and a single sealing layer in which said polyamide of the sealing layer is a long chain aliphatic polyamide, in particular PA1010, PA 1012, PA 1212, PA11, PA12, in particular PA 11 or PA12 and said polymer P2j is a semi-aromatic polyamide, in particular chosen from a PA MPMDT / 6T, a PA11 / 10T, a PA 11 / BACT, a PA 5T / 10T, one PA 11 / 6T / 10T, one PA MXDT / 10T, one PA MPMDT / 10T, one PA BACT / 10T, one PA BACT / 6T, PA BACT / 10T / 6T, one PA 11 / BACT / 6T, PA 11 / MPMDT / 6T, PA 11 / MPMDT / 10T, PA 11 / BACT / 10T and a PA 11 / MXDT / 10
  • a long chain polyamide is a polyamide with an average number of carbon atoms per nitrogen atom greater than 8.
  • said multilayer structure consists of a single reinforcing layer and a single sealing layer in which said polyamide of the sealing layer (1) is a long chain aliphatic polyamide, in in particular PA1010, PA 1012, PA 1212, PA12, in particular PA12 and said polymer P2j is a semi-aromatic polyamide, in particular chosen from a PA MPMDT / 6T, a PA PA11 / 10T, a PA 11 / BACT, a PA 5T / 10T one PA 11 / 6T / 10T, one PA MXDT / 10T, one PA MPMDT / 10T, one PA BACT / 10T, one PA BACT / 6T, PA BACT / 10T / 6T, one PA 11 / BACT / 6T, PA 11 / MPMDT / 6T, PA 11 / MPMDT / 10T, PA 11 / BACT / 10T and a PA 11 / MXDT / 10T.
  • the multilayer structure consists of a single reinforcing layer and a single sealing layer in which said polyamide of the sealing layer (1) is a long chain aliphatic polyamide, in particular PA1010, PA 1012, PA 1212, PA11, PA12, or semi-aromatic, in particular chosen from polyamide 11 / 5T or 11 / 6T or 11 / 10T, MXDT / 10T, MPMDT / 10T and BACT / 10T, in particular PA 11 or PA12 and said polymer P2j is an epoxy resin or an epoxy-based resin.
  • said polyamide of the sealing layer (1) is a long chain aliphatic polyamide, in particular PA1010, PA 1012, PA 1212, PA11, PA12, or semi-aromatic, in particular chosen from polyamide 11 / 5T or 11 / 6T or 11 / 10T, MXDT / 10T, MPMDT / 10T and BACT / 10T, in particular PA 11 or PA12 and said polymer P2j is an
  • the multilayer structure consists of a single reinforcing layer and a single sealing layer in which said polyamide of the sealing layer (1) is a long chain aliphatic polyamide, in particular PA1010, PA 1012, PA 1212, PA12, or semi-aromatic, in particular chosen from polyamide 11 / 5T or 11 / 6T or 11 / 10T, MXDT / 10T, MPMDT / 10T and BACT / 10T , in particular PA12 and said polymer P2j is an epoxy resin or an epoxy-based resin.
  • said multilayer structure further comprises at least one outer layer made of a continuous fiberglass fibrous material impregnated with a transparent amorphous polymer, said layer being the outermost layer of said multilayer structure.
  • Said outer layer is a second but transparent reinforcing layer which makes it possible to put an inscription on the structure.
  • said multilayer structure corresponds to a pipe and further comprises at least one outer metal braid (2 ’), said sealing layer being in contact with hydrogen.
  • This pipe is intended in particular to connect the reservoir defined above to the fuel cell.
  • the characteristics of the waterproofing layer are the same as above.
  • constituent fibers of said fibrous material they are in particular fibers of mineral, organic or plant origin.
  • said fibrous material can be sized or not sized.
  • Said fibrous material can therefore comprise up to 3.5% by weight of an organic material (thermosetting or thermoplastic resin type) called sizing.
  • fibers of mineral origin mention may be made of carbon fibers, glass fibers, basalt or basalt-based fibers, silica fibers, or silicon carbide fibers, for example.
  • fibers of organic origin mention may be made of fibers based on a thermoplastic or thermosetting polymer, such as semi-aromatic polyamide fibers, aramid fibers or polyolefin fibers, for example.
  • they are based on an amorphous thermoplastic polymer and have a glass transition temperature Tg greater than the Tg of the polymer or mixture of thermoplastic polymer constituting the pre-impregnation matrix when the latter is amorphous, or greater than the Tm of the polymer or mixture of thermoplastic polymer constituting the prepreg matrix when the latter is semi-crystalline.
  • they are based on semi-crystalline thermoplastic polymer and have a melting temperature Tm greater than the Tg of the polymer or mixture of thermoplastic polymer constituting the prepreg matrix when the latter is amorphous, or greater than the Tm of the thermoplastic polymer. polymer or mixture of thermoplastic polymer constituting the prepreg matrix when the latter is semi-crystalline.
  • fibers of plant origin mention may be made of natural fibers based on flax, hemp, lignin, bamboo, silk, in particular spider silk, sisal, and other cellulose fibers, in particular viscose. These fibers of plant origin can be used pure, processed or else coated with a coating layer, in order to facilitate the adhesion and impregnation of the thermoplastic polymer matrix.
  • the fibrous material can also be fabric, braided or woven with fibers.
  • organic fibers can be mixed with mineral fibers to be pre-impregnated with thermoplastic polymer powder and to form the pre-impregnated fibrous material.
  • the rovings of organic fibers can have several grammages. They can also have several geometries.
  • the fibers constituting the fibrous material can also be in the form of a mixture of these reinforcing fibers of different geometries. Fibers are continuous fibers.
  • the fibrous material is chosen from glass fibers, carbon fibers, basalt or basalt-based fibers, or a mixture of these, in particular carbon fibers.
  • It is used as a wick or several wicks.
  • the present invention relates to a method of manufacturing a multilayer structure as defined above, characterized in that it comprises a step of manufacturing a sealing layer (1) as defined in one of claims 1 to 12, by injection, extrusion, extrusion blow molding or rotational molding.
  • said method comprises a preliminary step of washing the polyamide of the composition at least once with a system chosen from a polar solvent, in particular methanol, water or water vapor, or a mixture of these.
  • a polar solvent in particular methanol, water or water vapor, or a mixture of these.
  • said method of manufacturing a multilayer structure which corresponds to a reservoir and as defined above is characterized in that it comprises a step of filament winding of a reinforcing layer (2), such as defined above, around the waterproofing layer (1).
  • said multilayer structure can be washed after manufacture at least once with a system chosen from a polar solvent, in particular methanol, water or water vapor, or a mixture thereof.
  • a polar solvent in particular methanol, water or water vapor, or a mixture thereof.
  • the structure is dried for 2 days under a stream of dry air, in particular at a temperature of 40 ° C to 80 ° C, in particular from 50 ° C to 70 ° C, in particular at 60 ° C after manufacture or after manufacturing and washing.
  • PA11 is a polyamide 11 of Mn (number molecular mass) 45,000. The melting point is 190 ° C, its enthalpy of fusion is 56 J / g.
  • PA11 / 10T Rilsan HT (Arkema)
  • Plasticizer BBSA (n-butyl benzene sulfonamide)
  • the sealing layers (liner) of the invention comprising a sealing layer (1) are obtained by rotational molding of the sealing layer (liner) with the various compositions above at a temperature suited to the nature of the material. thermoplastic resin used.
  • the multilayer structures comprising a composite reinforcement of epoxy resin or epoxy-based resin are obtained by a wet filament winding process which consists in winding carbon fibers around the liner, which fibers being pre-impregnated in a bath of liquid epoxy or a liquid epoxy based bath.
  • the reservoir is then polymerized in an oven for 2 hours.
  • Multilayer structure with waterproofing layer based on composition-11 ⁇ 0.5%
  • Multilayer structure with waterproofing layer based on composition-12 ⁇ 0.5%
  • Multilayer structure with waterproofing layer based on composition-13 ⁇ 0.5%
  • Multilayer structure with waterproofing layer based on composition-14 ⁇ 0.5%
  • Multilayer structure with waterproofing layer based on composition-15 ⁇ 0.5%
  • Multilayer structure with a waterproofing layer based on CI composition > 3%

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EP21725566.0A 2020-04-16 2021-04-15 Mehrschichtige struktur zum transport oder zur lagerung von wasserstoff Pending EP4136180A1 (de)

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FR2003818A FR3109389A1 (fr) 2020-04-16 2020-04-16 Structure multicouche pour le transport ou le stockage de l’hydrogene
PCT/FR2021/050657 WO2021209718A1 (fr) 2020-04-16 2021-04-15 Structure multicouche pour le transport ou le stockage de l'hydrogene

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FR3124428A1 (fr) * 2021-06-28 2022-12-30 Arkema France Structure multicouche pour le transport ou le stockage de l’hydrogene
FR3127435A1 (fr) * 2021-09-27 2023-03-31 Arkema France Structure tubulaire multicouche présentant un faible taux d’extractibles pour le transport de l’hydrogène

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CA1326832C (fr) * 1987-07-21 1994-02-08 Claude Leon Hembert Reservoir de fluide et son procede de fabrication
FR2629090B1 (fr) 1988-03-24 1990-11-23 Atochem Copolymere greffe a base d'alpha-mono-olefine, son procede de fabrication, son application a la fabrication d'alliages thermoplastiques, alliages thermoplastiques obtenus
US5534594A (en) 1994-12-05 1996-07-09 Rohm And Haas Company Preparation of butadiene-based impact modifiers
FR2858626B1 (fr) 2003-08-05 2005-10-07 Atofina Polyamides semi aromatiques souple a faible reprise en humidite
EP1844086B1 (de) 2004-11-22 2010-07-21 Arkema Inc. Schlagzäh modifizierte thermoplastische harzzusammensetzung
JP4792232B2 (ja) * 2005-02-25 2011-10-12 東海ゴム工業株式会社 燃料電池用ホース
FR2893622B1 (fr) * 2005-11-24 2007-12-21 Commissariat Energie Atomique Composition a base de caprolactame,procede de fabrication d'un element d'etancheite,et reservoir
CN104837927A (zh) * 2012-10-10 2015-08-12 罗地亚经营管理公司 气体储罐
FR2998299B1 (fr) * 2012-11-19 2015-04-03 Arkema France Composition a base d'un copolyamide semi-aromatique, d'une polyolefine et d'un stabilisant thermique au cuivre, sa preparation et ses utilisations
KR20150046790A (ko) * 2013-09-24 2015-05-04 한일튜브 주식회사 수소 전달 튜브
EP3145969B1 (de) * 2014-05-18 2021-12-22 Nuova Connavi Ricerca e Sviluppo S.R.L. Verfahren zur herstellung von erzeugnissen und halbzeugen wie prepregs auf der basis einer epoxidharzzusammensetzung und zusammensetzung dafür
FR3049953B1 (fr) * 2016-04-08 2020-04-24 Arkema France Composition de polymere thermoplastique et stabilisant a base de cuivre, sa preparation et ses utilisations
EP3587882B1 (de) * 2017-02-24 2022-02-16 Bridgestone Corporation Wasserstofftransportkomponente

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KR20230007381A (ko) 2023-01-12
FR3109389A1 (fr) 2021-10-22
US20230151255A1 (en) 2023-05-18
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