Vehicle fuel hose resistant to high pressure and low in permeability

A low-permeability technology for automotive fuel hoses, applied in the direction of hoses, pipes, pipes/pipe joints/fittings, etc., can solve the problems of not being able to use nitrile rubber, achieve strong practical value and economic value, and improve flexibility.

Inactive Publication Date: 2016-02-03
SHENYANG SAIYA RUBBER PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Europe, the inner layer rubber and the outer layer rubber are made of a blend of nitrile rubber and polyvinyl chloride with good aging resistance and crack resistance, but fuel injection engines are commonly used in North America, due to overoxidation Gasoline, so blends of nitrile rubber and PVC cannot be used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] This embodiment provides a kind of high-pressure-resistant low-permeability automotive fuel hose, which is sequentially from the inside to the outside: a neoprene layer, a skeleton material layer, a chlorinated polyethylene rubber layer and a composite coating; the skeleton material layer is made of polyester fiber and steel wire; the composite coating is composed of the following raw materials in weight fractions: 8 parts of triisobutyl aluminum, 4 parts of vinyl silicone oil, 2 parts of polyimide, 3.5 parts of bentonite, and 13 parts of silicon dioxide particles .

[0017] The chloroprene rubber is a synthetic rubber produced by α-polymerization of chloroprene (that is, 2-chloro-1,3-butadiene) as the main raw material. It belongs to crystalline rubber, and its pure rubber has high tensile strength. Tensile strength, high elongation at break. Chloroprene rubber is produced by emulsion polymerization, and the production process is mostly single-pot batch polymerization...

Embodiment 2

[0021] This embodiment provides a kind of high-pressure-resistant low-permeability automotive fuel hose, which is sequentially from the inside to the outside: a neoprene layer, a skeleton material layer, a chlorinated polyethylene rubber layer and a composite coating; the skeleton material layer is made of polyester fiber and steel wire; the composite coating is composed of the following raw materials in weight fractions: 6 parts of triisobutyl aluminum, 4 parts of vinyl silicone oil, 1.5 parts of polyimide, 3 parts of bentonite, and 10 parts of silicon dioxide particles .

Embodiment 3

[0023] This embodiment provides a kind of high-pressure-resistant low-permeability automotive fuel hose, which is sequentially from the inside to the outside: a neoprene layer, a skeleton material layer, a chlorinated polyethylene rubber layer and a composite coating; the skeleton material layer is made of polyester fiber and steel wire; the composite coating consists of the following raw materials in weight fractions: 10 parts of triisobutylaluminum, 5 parts of vinyl silicone oil, 3 parts of polyimide, 4.75 parts of bentonite, and 13 parts of silicon dioxide particles .

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PUM

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Abstract

A vehicle fuel hose resistant to high pressure and low in permeability is sequentially composed of a chloroprene rubber layer, a framework material layer, a chlorinated polyethylene rubber layer and a composite coating. The framework material layer is made of polyester fibers and steel wires. The composite coating is made of triisobutyl aluminum, vinyl silicone oil, polyimide, bentonite and silicon dioxide particles. The raw material of the composite coating is composed of, by weight, the triisobutyl aluminum of 5-10 parts, the vinyl silicone oil of 3-6 parts, the polyimide of 1-4 parts, the bentonite of 3-5 parts and the silicon dioxide particles of 8-15 parts. According to the hose, the framework material layer effectively improves the flexibility and the torsion resistance of the vehicle fuel hose, and the hose can be restored in shape after being subjected to high pressure; the granularity of the nano-meter silicon dioxide particles is basically uniform, so that the hose is low in permeability to liquid. Thus, the vehicle fuel hose can be widely applied to the vehicle field and has high practical value and economic value.

Description

technical field [0001] The invention relates to the technical field of rubber products, in particular to a high-pressure-resistant low-permeation automotive fuel hose. Background technique [0002] The rapid development of my country's automobile industry has brought a good opportunity for the development of rubber hoses, an accessory product for automobiles. If calculated according to the use of 20m rubber hoses for each car, the demand for rubber hoses for new car production in 2005 will be more than 100 million m, plus maintenance With rubber hose, the market potential is huge. With the development of automobiles in the direction of high speed, high functionality and comfort, and the use of electrical equipment or components such as electric injection devices and turbochargers for complete fuel combustion; in addition, in order to protect the environment, automobiles use Unleaded gasoline, the narrowing of the car engine compartment, and the rise in temperature all put fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/08C09D183/07C09D179/08C09D7/12
CPCF16L11/08C08L2203/18C09D7/61C09D7/63C09D183/04
Inventor 刘家新张迎新
Owner SHENYANG SAIYA RUBBER PRODS
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