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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 layer, aramid thread layer, and epichloride rubber layer, due to their high price, will also cause waste caused by excessive product performance, so in order to achieve the ideal Permeation resistance, and the cost is low, there must be a new type of fuel hose to meet the performance requirements of the car

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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