MULTILAYER PIPELINE

Abstract

A multilayer motor vehicle pipeline, wherein at least one barrier layer comprised of at least one material from the group butene diol-vinyl alcohol copolymer (BVOH), polyvinyl alcohol (PVOH), polymer blend with BVOH, polymer blend with PVOH is provided. At least one outer layer made of plastic is arranged on the exterior side of the barrier layer.

Claims

1. A multilayer motor vehicle pipeline, having at least one barrier layer comprised of at least one material selected from the group of butene diol-vinyl alcohol copolymer (BVOH), polyvinyl alcohol (PVOH), polymer blend with BVOH, polymer blend with PVOH, and wherein at least one outer layer made of plastic is arranged on the exterior side of the barrier layer.

2. The pipeline according to claim 1, wherein the motor vehicle pipeline is a hydrogen transport pipeline.

3. The pipeline according to claim 1, wherein at least one inner layer made of plastic is arranged on the interior side of the barrier layer.

4. The pipeline according to claim 1, wherein the outer layer consists essentially of a plastic selected from the group polyamide, polyolefin.

5. The pipeline according to claim 1, wherein the outer layer consists essentially of polyamide 12 and/or polyamide 612.

6. The pipeline according to claim 1, wherein at least one first bonding layer made of plastic is arranged between the barrier layer and the outer layer, wherein the first bonding layer consists of a polyamide.

7. The pipeline according to claim 1, wherein the inner layer consists essentially of a plastic selected from the group polyamide, polyolefin, fluoropolymer.

8. The pipeline according to claim 1, wherein at least areas of the inner layer are configured to be electrically conductive.

9. The pipeline according to claim 1, wherein the inner layer consists essentially of a polyamide selected from the group polyamide 6, polyamide 12, polyamide 612.

10. The pipeline according to claim 1, wherein at least one second bonding layer made of plastic is arranged between the barrier layer and the inner layer, wherein the second bonding layer consists of a polyamide.

11. The pipeline according to claim 1, wherein at least one innermost layer made of plastic is connected to the interior side of the inner layer, wherein the innermost layer consists essentially of a fluoropolymer.

12. The pipeline according to claim 1, wherein the innermost layer consists essentially of ETFE.

13. The pipeline according to claim 1, wherein at least areas of the innermost layer are configured to be electrically conductive.

14. The pipeline according to claim 1, wherein a thickness of the barrier layer measures at least 5% of the overall wall thickness of the pipeline.

15. The pipeline according to claim 6, wherein the first bonding layer consists essentially of polyamide 6.

16. The pipeline according to claim 10, wherein the second bonding layer consists essentially of polyamide 6.

17. The pipeline according to claim 1, wherein a thickness of the barrier layer measures at least 10% of the overall wall thickness of the pipeline.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure will be described in more detail below based upon a drawing that only represents an exemplary embodiment. Schematically shown on:

[0019] FIG. 1 is a perspective view of a pipeline according to the disclosure;

[0020] FIG. 2 is a section through the object according to FIG. 1; and

[0021] FIG. 3 is the object according to FIG. 2 in another embodiment.

DETAILED DESCRIPTION

[0022] The figures show a multilayer motor vehicle tube or pipeline R according to the disclosure with a barrier layer 1. This motor vehicle pipeline R is a hydrogen transport pipeline for passing hydrogen through. In the exemplary embodiment, the barrier layer 1 consists of butene diol-vinyl alcohol copolymer (BVOH) or essentially of BVOH. In the exemplary embodiment according to the figures, an outer layer 2 made of polyamide 12 is arranged on the exterior side of the barrier layer 1. In addition, the pipeline R in the exemplary embodiment has an inner layer 3, for example which consists or essentially consists of polyamide 6. The inner layer 3 can be provided with conductivity additives, so that the inner layer 3 is electrically conductive in design, at least on its interior side.

[0023] In the exemplary embodiment according to the figures, a first bonding layer 4 is arranged between the outer layer 2 and the barrier layer 1, for example which can consist of polyamide 6 or essentially consist of polyamide 6. In the exemplary embodiment according to the disclosure, a second bonding layer 5 is interspersed between the inner layer 3 and the barrier layer 1, for example which can consist of polyamide 6 or essentially consist of polyamide 6.

[0024] In the embodiment on FIG. 2, the motor vehicle pipeline R according to the disclosure has a total of five layers, specifically, from the outside in, the outer layer 2, the first bonding layer 4, the barrier layer 1 made of BVOH, the second bonding layer 5 and the inner layer 3.

[0025] In the exemplary embodiment on FIG. 3, a total of six layers of the pipeline are provided. In comparison to the embodiment according to FIG. 2, an additional innermost layer 6 is present here. This innermost layer 6 preferably consists of a fluoropolymer or essentially of a fluoropolymer, and in the exemplary embodiment according to FIG. 3, best consists of ETFE or essentially of ETFE. The innermost layer 6 can here have conductivity additives, so that the innermost layer 6 is conductive in design, at least on its interior side.