Low-penetration fuel hose and preparing method thereof

A fuel hose, low-permeability technology, applied in chemical instruments and methods, hoses, pipes, etc., can solve the problems of waste, excessive product performance, and high prices

Inactive Publication Date: 2009-10-07
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the fuel pipe with a permeability standard of 80°C×24h, <8g/100cm, and the operating temperature range is -40°C to 150°C, the current general-purpose fuel hose can no longer meet the requirements, and the other is from the inside to the outside. Fuel hoses with fluororubber layer, epichloride rubber l

Method used

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  • Low-penetration fuel hose and preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Production inner diameter is 5±0.3mm×wall thickness is 1.7±0.3mm (Viton inner layer 1 thickness 0.2mm, chlorosulfonated polyethylene rubber middle layer 2 thickness 0.5mm, chlorosulfonated polyethylene rubber outer layer 4 thickness 1.0mm) The fluorine rubber and chlorosulfonated polyethylene rubber, chlorosulfonated polyethylene rubber fuel hose, the method steps are as follows:

[0017] The inner layer of fluororubber and the middle layer of chlorosulfonated polyethylene rubber are double-compounded, and the extrusion temperature of the inner layer of fluororubber is 70°C in the head section, 70°C in the mixing section, 70°C in the feeding section, and 60°C in the screw section; the middle layer The extrusion temperature of chlorosulfonated polyethylene rubber is 70°C in the mixing section, 60°C in the feeding section, and 40°C in the screw section.

[0018] Braided layer: produced by weaving with aramid yarn, aramid yarn 800dtx, weaving stroke 20mm.

[0019] Chloros...

Embodiment 2

[0027] Production inner diameter is 7.5±0.3mm×wall thickness is 3.5±0.3mm (Viton inner layer 1 thickness 0.5mm, chlorosulfonated polyethylene rubber middle layer 2 thickness 1.0mm, chlorosulfonated polyethylene rubber outer layer 4 thickness 2.0mm) Fluorine rubber and chlorosulfonated polyethylene rubber, chlorosulfonated polyethylene rubber fuel hose, the method steps are as shown in embodiment 1, and the difference is:

[0028] 1) Tube embryo manufacturing process

[0029] The inner layer of fluororubber and the middle layer of chlorosulfonated polyethylene rubber are double-compounded, and the extrusion temperature of the inner layer of fluororubber is 100°C in the head section, 80°C in the mixing section, 70°C in the feeding section, and 70°C in the screw section; the middle layer The extrusion temperature of chlorosulfonated polyethylene rubber is 60°C in the mixing section, 60°C in the feeding section, and 60°C in the screw section.

[0030] Braided layer: produced by w...

Embodiment 3

[0039] The production inner diameter is 10.0±0.3mm×wall thickness 5.3±0.5mm (Viton inner layer 1 thickness 0.8mm, chlorosulfonated polyethylene rubber middle layer 2 thickness 1.5mm, chlorosulfonated polyethylene rubber outer layer 4 thickness 3.0mm) Fluorine rubber and chlorosulfonated polyethylene rubber, chlorosulfonated polyethylene rubber fuel hose, the method steps are as shown in embodiment 1, the difference is:

[0040] The inner layer of fluororubber and the middle layer of chlorosulfonated polyethylene rubber are double-compounded, and the extrusion temperature of the inner layer of fluororubber is 90°C in the head section, 90°C in the mixing section, 90°C in the feeding section, and 90°C in the screw section; the middle layer The extrusion temperature of chlorosulfonated polyethylene rubber is 70°C in the mixing section, 70°C in the feeding section, and 60°C in the screw section.

[0041] Braided layer: produced by weaving with aramid thread, aramid thread 1100dtx, ...

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Abstract

The present invention relates to a low-penetration fuel hose and preparing method thereof. The low-penetration fuel hose has a four-layer structure which is composed of the following components: a fluorubber inner layer (1), a chlorosulphonated polyethylene middle layer (2), a reinforcing layer (3) and a chlorosulphonated polyethylene outer layer (4). The preparing method comprises the following steps: 1) extruding step: compositely extruding out the fluorubber inner layer and chlorosulphonated polyethylene middle layer, weaving a weaved layer with aramid fiber thread, and extruding out the chlorosulphonated polyethylene outer layer rubber; and 2) vulcanizing forming process: adopting a one-segment vulcanizing method with the following vulcanizing parameters: 130-180 DEG C of vulcanizing temperature and 5-60 min of vulcanizing time. The low-penetration fuel hose of the invention settles the problem of high penetration of prior low-temperature fuel hose and environment pollution.

Description

technical field [0001] The invention relates to a low-permeability fuel oil hose and a preparation method, in particular to a novel environment-friendly low-permeability fluororubber and chlorosulfonated polyethylene rubber, a reinforcement layer, a chlorosulfonated polyethylene rubber structural fuel hose and a preparation technology. Background technique [0002] With the development of the automobile industry and the enhancement of environmental awareness, the performance of existing fuel hoses can no longer meet the ever-changing performance requirements of automobiles. The current general-purpose three-layer structure fuel hoses are: nitrile rubber layer, aramid fiber Thread layer, neoprene layer. The fuel oil permeability standard is 80℃×24h, <15g / 100cm; the service temperature range is -40℃~125℃. For the fuel pipe with a permeability standard of 80°C×24h, <8g / 100cm, and the operating temperature range is -40°C to 150°C, the current general-purpose fuel hose can...

Claims

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Application Information

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IPC IPC(8): F16L11/08B29C47/92B29C35/02B32B1/08B32B25/08B29C48/92
CPCB29C48/92B29C2948/92561B29C2948/92704B29C2948/92923
Inventor 张洪起胡金明
Owner TIANJIN PENGYI GRP CO LTD
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