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Multilayer pipe

A multi-layer tube and polyketone layer technology, applied in the field of multi-layer automotive fuel pipes and multi-layer tubes, can solve the problems of low cost, low precipitation, high and low temperature resistance, poor penetration resistance, low temperature resistance, etc. , to achieve the effect of improving the prevention of fuel penetration, saving costs and reducing dependence

Inactive Publication Date: 2016-02-03
HEBEI CHINAUST AUTOMOTIVE PLASTICS CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the oil delivery pipes used in most vehicles are single-layer polymer pipes, which have the disadvantages of poor penetration resistance, low high temperature resistance and more precipitation
[0004] There are also multi-layer oil pipelines in the prior art, but there are problems of high cost or high precipitation, and it is difficult to meet high performance requirements such as low cost, low precipitation, and high and low temperature resistance.

Method used

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Embodiment Construction

[0054] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0055] In describing the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the scope of the present invention.

[0056] Such as figure 1 Shown is a schematic cross-sectional view of an embodiment of the multilayer pipe o...

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Abstract

The invention provides a multilayer pipe. The multilayer pipe comprises two or more layers, the innermost layer is a polyketone layer or a high-density polyethylene layer or an ethylene-tetrafluoroethylene copolymer layer, the outermost layer is a polyketone layer or a high-density polyethylene layer or a polyamide layer, and one or more layers of the multilayer pipe are polyketone layers. According to the invention, polyketone low in precipitation degree is adopted in the innermost layer and / or the outermost layer so that the requirements of the internal environment of oil tanks for oil delivery pipes can be met, and the risk that precipitation material in the oil tanks causes blockage of oil way systems is avoided.

Description

technical field [0001] The invention belongs to the field of composite materials, in particular to a multilayer pipe. It also relates to the use of the multilayer pipe as a multilayer fuel pipe, in particular as a multilayer automobile fuel pipe. Background technique [0002] Automobile fuel pipes include fuel oil pipes and fuel pipes that supply fuel to the engine. They are relatively important safety parts, and there are more performance requirements for their materials. [0003] At present, the oil delivery pipes used in most vehicles are single-layer polymer pipes, which have the disadvantages of poor penetration resistance, low high temperature resistance and more precipitation. [0004] There are also multi-layer oil pipelines in the prior art, but there are problems of high cost or high precipitation, and it is difficult to meet high performance requirements such as low cost, low precipitation, and high and low temperature resistance. [0005] There is still a need ...

Claims

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Application Information

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IPC IPC(8): F16L9/12F16L9/133
CPCF16L9/121F16L9/12F16L9/123F16L9/133
Inventor 杜素果杨泉良张颖王振江孔德信施振华姚宇
Owner HEBEI CHINAUST AUTOMOTIVE PLASTICS CORP LTD