Plastic liner for a composite pressure vessel

A technology of plastics and linings, applied in the direction of pressure vessels, container discharge methods, container structure manufacturing, etc., can solve problems such as hydrogen permeability problems

Active Publication Date: 2017-02-22
PLASTIC OMNIUM NEW ENERGIES FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It has been found that these known liners suffer from relatively high hydrogen gas permeability in the polymer

Method used

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  • Plastic liner for a composite pressure vessel
  • Plastic liner for a composite pressure vessel
  • Plastic liner for a composite pressure vessel

Examples

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Embodiment Construction

[0056] figure 1 is a schematic cross-sectional view of a multilayer structure of a plastic liner according to a first embodiment of the present invention. like figure 1 As shown, the plastic liner may comprise a PVDF-based inner layer 7, a first adhesive layer 6, an HDPE-based middle layer 5, a second adhesive layer 4, an EVOH-based barrier layer 3, a third adhesive layer 2 and HDPE-based outer layer1.

[0057] The multilayer structure combining PVDF layer and EVOH layer has the advantage of enhancing the barrier effect (ie reducing / eliminating the risk of gas permeation) while effectively protecting the liner from cracking effects due to foaming.

[0058] figure 2 is a schematic cross-sectional view of a multilayer structure of a plastic liner according to a second embodiment of the present invention. like figure 2 As shown, the plastic liner may comprise a PVDF-based inner layer 7, a first adhesive layer 6, an HDPE-based middle layer 5, a second adhesive layer 4, an...

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Abstract

The invention discloses a plastic liner for a composite pressure vessel. According to the invention, the plastic liner for the storage of hydrogen comprises: a first barrier layer (3), a second barrier layer (7) configured to be an inner layer in contact with hydrogen, at least one intermediate layer arranged between the first and the second barrier layers, wherein the second barrier layer (7) has a lower hydrogen permeability than said at least intermediate layer such that the second barrier layer (7) slows down the migration of hydrogen inside said at least one intermediate layer.

Description

technical field [0001] The present invention relates to a plastic liner for a composite pressure vessel. In particular, the invention relates to a plastic liner for hydrogen storage. Background technique [0002] Some vehicles use compressed gas, especially hydrogen, as fuel. Typically, such vehicles are equipped with composite pressure vessels. Typically, the composite pressure vessel includes a liner for hydrogen storage. [0003] Both metallic and non-metallic linings are used, but non-metallic linings are preferred because of their lighter weight. [0004] Non-metallic linings can be of the single layer type or of the multilayer type. Typically, liners of the monolayer type comprise a single polyamide layer. Typically, multilayer type liners comprise a structure with 6 layers: an inner layer based on thermoplastic material (preferably: HDPE), a first adhesive layer, a layer comprising impermeable resin (preferably: EVOH), a second An adhesive layer, a regrind layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/00F17C13/00B32B27/08B60K15/03B29C48/335
CPCB32B27/08B60K15/03006B60K15/03177F17C1/00F17C13/00B60K2015/03486B60K2015/03046B60K2015/03039F17C2203/0604F17C2223/0123F17C2221/012F17C2209/2127Y02E60/32B32B1/02B32B7/02B32B7/12B32B27/20B32B27/304B32B27/306B32B2307/7242B32B2605/08F17C1/005F17C1/02F17C2203/066F17C2209/2109F17C2209/232
Inventor B·克里尔弗朗索瓦·道尼尔
Owner PLASTIC OMNIUM NEW ENERGIES FRANCE
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