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Composite oil gas rubber pipe and manufacturing method thereof

A manufacturing method and technology of rubber hose, applied in the direction of hose, pipe, pipe/pipe joint/pipe fitting, etc., can solve the problems of shortened service life, accelerated thermal aging, poor heat resistance, etc., to achieve high production efficiency and improve product performance , good heat and oil resistance

Pending Publication Date: 2018-10-16
ZHEJIANG JUNHE RUBBER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: poor heat resistance, nitrile rubber and neoprene materials will accelerate thermal aging when over 100°C, and shorten service life; and the existing rubber hose materials have high fuel permeability, which is not conducive to the prevention of fuel emissions. Environmental requirements

Method used

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  • Composite oil gas rubber pipe and manufacturing method thereof
  • Composite oil gas rubber pipe and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A composite oil and gas hose, the hose body is a two-layer composite structure composed of an inner rubber layer and an outer rubber layer, the inner rubber layer is made of chloroether rubber, and the outer rubber layer is made of chlorosulfonated polyethylene rubber . Its inner diameter is 7.0±0.3mm, wall thickness is 3.5±0.4mm, and length is 630±5mm.

[0028] The manufacturing steps are as follows:

[0029] Step 1, rubber compounding: the inner rubber layer and the outer rubber layer are respectively mixed with raw materials;

[0030] According to the raw rubber weight, small material weight and large material weight of the inner rubber layer and outer rubber layer components;

[0031] Put the components of the inner rubber layer into the internal mixer for mixing, set the glue inlet temperature at 50-100°C, the glue discharge temperature at 140°C, the upper bolt pressure at 0.6MPa, and the internal mixer speed at 35 rpm; Add carbon black and plasticizer;

[0032...

Embodiment 2

[0038] A composite oil and gas hose, the hose body is a two-layer composite structure composed of an inner rubber layer and an outer rubber layer, the inner rubber layer is made of chloroether rubber, and the outer rubber layer is made of chlorosulfonated polyethylene rubber . Its inner diameter is 10±0.3mm, wall thickness is 4.5±0.4mm, and length is 580±5mm.

[0039] The manufacturing steps are as follows:

[0040] Step 1, rubber compounding: the inner rubber layer and the outer rubber layer are respectively mixed with raw materials;

[0041] According to the raw rubber weight, small material weight and large material weight of the inner rubber layer and outer rubber layer components;

[0042] Put the components of the inner rubber layer into the internal mixer for mixing, set the glue inlet temperature at 50-100°C, the glue discharge temperature at 140°C, the upper bolt pressure at 0.6MPa, and the internal mixer speed at 35 rpm; Add carbon black and plasticizer;

[0043]...

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Abstract

The invention discloses a composite oil gas rubber pipe which comprises a rubber pipe body. The rubber pipe body is of a two-layer composite structure formed by an inner-layer rubber layer and an outer-layer rubber layer; the inner-layer rubber layer is made of epichlorohydrin rubber; and the outer-layer rubber layer is made of chlorosulfonated polyethylene rubber. A manufacturing method comprisesthe steps of after carrying out raw material compounding for the outer-layer rubber layer and the inner-layer rubber layer, feeding into an internal mixer for mixing, then feeding into two extrudingmachines of a T-shaped composite extruding machine for composite extruding, and then carrying out primary vulcanization. The composite oil gas rubber pipe and the manufacturing method thereof have theadvantages that the double-layer structure is adopted, the inner layer is made of the epichlorohydrin rubber so as to be good in heat resistance and oil resistance, the outer layer is supported by the chlorosulfonated polyethylene rubber so as to be outstanding in heat resistance and ozone resistance, and the characteristics of the inner-layer rubber material and the outer-layer rubber material are fully utilized, so that the product performance can be greatly improved; and by adopting double-composite co-extrusion process for production, the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of automobile rubber hose manufacturing, in particular to a composite oil-gas rubber hose and a manufacturing method thereof. Background technique [0002] The rubber hose used in the fuel evaporation system of the automobile fuel tank and the exhaust gas utilization system of the engine crankcase must use a rubber hose with good fuel resistance, low fuel permeability, good heat aging resistance, and negative pressure resistance. Existing materials for low-pressure oil and gas hoses use a single-layer structure of nitrile rubber + PVC material, or nitrile rubber as the inner rubber layer, polyester fiber as the reinforcing layer, and neoprene as the outer rubber layer material. Its disadvantages are: poor heat resistance, nitrile rubber and neoprene materials will accelerate thermal aging when over 100°C, and shorten service life; and the existing rubber hose materials have high fuel permeability, which is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/10F16L58/10B29C47/06B29K23/00B29K71/00
CPCF16L11/10F16L58/109B29C48/022B29C48/10B29C48/21B29K2023/00B29K2071/02
Inventor 蒋亨雷蒋广煜洪辉高朋雁
Owner ZHEJIANG JUNHE RUBBER TECH
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