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Fuel pipe and preparation method thereof

A fuel pipe and pipe blank technology, which is applied in hoses, pipes, mechanical equipment, etc., can solve the problems of poor fuel penetration resistance, strong rigidity, and hard pipe body, and achieve improved fuel permeability, ultra-low fuel penetration, Good barrier effect

Active Publication Date: 2013-05-22
ANHUI ZHONGDING SEALING PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the NBR nitrile rubber hose used in the current automotive fuel system has many advantages such as oil resistance and aging resistance, its resistance to fuel penetration is poor.
Although the existing plastic pipes have the characteristics of low permeability, they have the defects that the pipe body is too hard and the rigidity is too strong

Method used

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  • Fuel pipe and preparation method thereof
  • Fuel pipe and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036]A fuel pipe with THV fluoroplastic material, from the inside to the outside: NBR nitrile rubber layer 1, THV fluoroplastic material layer 2, NBR nitrile rubber layer 3, aramid fiber layer 4, CSM chlorosulfonated polyamide Vinyl rubber layer5.

[0037] The preparation method of the fuel pipe comprises the following steps:

[0038] (1) Extrude NBR nitrile rubber from a cold feed extruder into inner rubber;

[0039] (2) Extrude the THV fluoroplastic material from a special plastic extruder to coat the outside of the NBR nitrile rubber inner rubber layer, and then extrude the NBR nitrile rubber to coat the THV fluoroplastic layer through the middle rubber extruder On the outside, the aramid fiber thread is woven on the knitting machine, and finally the CSM chlorosulfonated polyethylene rubber is extruded and coated on the outside of the aramid fiber thread through the outer rubber extruder to form a tube blank;

[0040] (3) Put the tube blank on the special mold core, then...

Embodiment 2

[0042] A fuel pipe with THV fluoroplastic material. The fuel pipe is sequentially composed of a first NBR nitrile rubber layer 1 with a thickness of 1.5mm, a THV fluoroplastic material layer 2 with a thickness of 0.1mm, and a second layer with a thickness of 1mm from the inside to the outside. NBR nitrile rubber layer 3, 0.6mm thick aramid fiber layer 4, 1.4mm thick CSM chlorosulfonated polyethylene rubber layer 5.

[0043] The preparation method of the fuel pipe comprises the following steps:

[0044] (1) Extrude NBR nitrile rubber from a cold feed extruder into inner rubber;

[0045] (2) Extrude the THV fluoroplastic material from a special plastic extruder to coat the outside of the NBR nitrile rubber inner rubber layer, and then extrude the NBR nitrile rubber to coat the THV fluoroplastic layer through the middle rubber extruder On the outside, the aramid fiber thread is woven on the knitting machine, and finally the CSM chlorosulfonated polyethylene rubber is extruded an...

Embodiment 3

[0048] A fuel pipe with THV fluoroplastic material, the fuel pipe is sequentially composed of a first NBR nitrile rubber layer 1 with a thickness of 1.2mm, a THV fluoroplastic material layer 2 with a thickness of 0.16mm, and a second layer with a thickness of 0.4mm from the inside to the outside. Two NBR nitrile rubber layers 3, 0.4mm thick aramid fiber layers 4, 1.4mm thick CSM chlorosulfonated polyethylene rubber layers 5.

[0049] The preparation method of the fuel pipe comprises the following steps:

[0050] (1) Extrude NBR nitrile rubber from a cold feed extruder into inner rubber;

[0051] (2) Extrude the THV fluoroplastic material from a special plastic extruder to coat the outside of the NBR nitrile rubber inner rubber layer, and then extrude the NBR nitrile rubber to coat the THV fluoroplastic layer through the middle rubber extruder On the outside, the aramid fiber thread is woven on the knitting machine, and finally the CSM chlorosulfonated polyethylene rubber is e...

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Abstract

The invention relates to a fuel pipe and a preparation method of the fuel pipe. The fuel pipe comprises a first nitrile-butadiene rubber (NBR) layer, a tetrafluoroethylene hexafluoropropylene vinylidene fluoride (THV) fluoroplastics material layer, a second NBR layer, an aramid fiber layer and a chlorosulfonated polyethylene (CSM) rubber layer. By means of the fuel pipe and the preparation method of the fuel pipe, the THF fluoroplastics material is chosen as a fuel blocked layer of the fuel pipe, nitrile-butadiene rubber, aramid fibers, chlorosulfonated polyethylene rubber and the like are coordinated, the fuel pipe is enabled to play a good blocking role on the fuel, the fuel penetrating quality of the fuel pipe is improved remarkably, and the purpose of super-low fuel penetration is achieved.

Description

technical field [0001] The invention relates to a fuel pipe and a preparation method thereof, in particular to a low-permeability automobile fuel pipe and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of economy, all countries in the world have gradually realized the tension of energy and the negative impact of economic development on the global environment. Therefore, countries are investing more and more in energy conservation and environmental protection. bigger and bigger. Safety, energy saving and environmental protection are the eternal themes in the development of automobile technology. The use of electronically controlled fuel injection system engine is one of the important measures to reduce emissions. After the car adopts the EFI engine, the pressure of the fuel system is about 10 times higher than that of the usual engine. The use of the EFI engine not only increases the temperature of the engine itself, ...

Claims

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Application Information

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IPC IPC(8): F16L11/12B29C47/06B29C35/04
Inventor 夏迎松郑海波朱宝宁严江威陈晋阳鲍仁德
Owner ANHUI ZHONGDING SEALING PARTS
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