Method for producing fuel line hose made from fluoro-resin

A technology of fuel hose and production method, which is applied in the direction of synthetic resin layered products, chemical instruments and methods, layered products, etc., and can solve the problems of fuel hose fuel penetration, poor ozone resistance, etc.

Inactive Publication Date: 2004-09-29
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is mainly to solve the requirements of NBR rubber on high temperature resistance, heat oil resistance, ozone resistance and fuel oil hose penetration.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Produce a four-layer fuel hose. On the three-dimensionally sealed rubber mixing production line, produce materials for tube blank extrusion; then extrude the semi-finished hose, from inside to outside: fluororesin layer, epichlorohydrin rubber layer, Aramid thread layer, epichlorohydrin rubber layer; the extrusion temperature of each interval of fluororesin: 230°C, 230°C, 230°C, 230°C, 230°C, 230°C, 225°C, 220°C; each interval of epichlorohydrin Extrusion temperature: 90°C, 80°C, 70°C, 70°C; then vulcanize the rubber hose, controlled by a computer, and use steam vulcanization to vulcanize and shape the semi-finished rubber hose, and perform two-stage vulcanization to make the rubber hose reach the best performance index; The desired size determines the final length of hose to be cut.

Embodiment 2

[0012] It is a production method of a five-layer THV fluororesin layer fuel hose, and the process steps are the same as in Example 1, except that from the inside to the outside, they are: fluororubber layer, fluororesin layer, epichlorohydrin rubber layer, and aramid fiber layer , Epichlorohydrin rubber layer. Among them, the extrusion temperature of each section of fluororubber: 95°C, 90°C, 90°C, 80°C; the extrusion temperature of each section of fluororesin: 230°C, 230°C, 230°C, 230°C, 230°C, 230°C, 225°C, 220°C; Extrusion temperature for each section of epichlorohydrin: 90°C, 80°C, 70°C, 70°C.

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PUM

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Abstract

A rubber tube with at least one fluorine resin layer for the fuel oil of car is prepared through refining rubber, extruding out, and sulfurizing. Its advantages are high resistance to fuel oil, high temp. ozone and osmosis and long service life.

Description

[0001] The invention relates to a production method of a fuel rubber hose, in particular to a production method of a fluororesin fuel hose used in automobiles. Background technique [0002] At present, the fuel system of automobiles uses NBR rubber, which is nitrile rubber. This material has excellent oil resistance, aging resistance and wear resistance, low air permeability and high cohesion, but poor ozone resistance. Although NBR rubber can be used continuously at 120°C and has excellent oil resistance, with the development of the automobile industry and the enhancement of environmental awareness, the performance of the original NBR can no longer meet the ever-changing performance requirements of automobiles. The current fuel hose It is required to withstand high temperatures of 200-300°C, and has very high requirements for oil permeability, and the requirement for ozone resistance has also been increased from 50pphm to 200pphm. Therefore, a new typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B1/08B32B27/40
Inventor 张洪起黄英李风海张学振
Owner TIANJIN PENGYI GRP CO LTD
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