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Preparation method of outer-layer rubber of automobile fuel rubber hose

A technology of automotive fuel hose and outer rubber, which is applied in the field of automotive rubber hose, and can solve the problems that the performance parameters of the outer rubber of automotive fuel hose, such as fuel resistance, fuel permeability, high temperature resistance and aging resistance, cannot meet the requirements of industrial applications, etc. Achieve low fuel permeability and good fuel resistance

Active Publication Date: 2015-01-14
广西颖航科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the continuous improvement of industrial technology, the performance parameters such as fuel resistance, fuel permeability, high temperature resistance and aging resistance of the outer layer rubber of automobile fuel hose produced by the existing technology can no longer meet the requirements of its industrial application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of the outer rubber of the automobile fuel hose comprises the following raw materials: 10.0 kg of ethylene acrylate rubber; 2.0 kg of quick-pressed carbon black; 1.5 kg of thermal black; 0.8 kg of talcum powder; 0.5 kg of magnesium oxide; Acid 0.5kg; polyamide 0.4kg; ethylenediamine 0.3kg; thiocyanate 0.08kg; calcium hydroxide 0.5kg;

[0017] Its preparation steps are as follows:

[0018] A. First put the raw materials of the above-mentioned parts by weight into an open mill to mix synthetic rubber, and then extrude for 15 minutes at a pressure of 0.6MPa and a temperature of 60°C;

[0019] B. After the extrusion in step A is completed, put it into the extruder and exit the machine. The extrusion temperature is 90°C, 80°C, 80°C, and 80°C from the machine head to the screw, and the inner rubber tube embryo is obtained;

[0020] C. Put the inner layer rubber tube embryo prepared in step B into the vulcanization equipment, under the pressure of 210Kg...

Embodiment 2

[0023] The preparation method of the outer rubber of the automobile fuel hose comprises the following raw materials: 10.0kg of ethylene acrylate rubber; 3.0kg of quick extruded carbon black; 1.0kg of thermal carbon black; 1.2kg of talcum powder; 0.1kg of magnesium oxide; Acid 0.8kg; polyamide 0.2kg; ethylenediamine 0.5kg; thiocyanate 0.05kg; calcium hydroxide 1.0kg;

[0024] Its preparation steps are as follows:

[0025] A. First put the raw materials of the above parts by weight into an open mill to mix synthetic rubber, and then extrude for 20 minutes at a pressure of 0.8MPa and a temperature of 55°C;

[0026] B. After the extrusion in step A is completed, put it into the extruder and exit the machine. The extrusion temperature from the head to the screw is 80°C, 70°C, 70°C, and 60°C in order to obtain the inner rubber tube embryo;

[0027] C. Put the inner layer rubber tube blank prepared in step B into the vulcanization equipment, under the pressure of 205Kgf / cm 2 , unde...

Embodiment 3

[0030] The preparation method of the outer rubber of the automobile fuel hose comprises the following preparation raw materials: ethylene acrylate rubber 10.0kg; quick extruded carbon black 2.5kg; thermal carbon black 1.2kg; talcum powder 1.0kg; magnesium oxide 0.4kg; stearin Acid 0.7kg; polyamide 0.3kg; ethylenediamine 0.4kg; thiocyanate 0.06kg; calcium hydroxide 0.8kg;

[0031] Its preparation steps are as follows:

[0032] A. First put the raw materials of the above-mentioned parts by weight into an open mill to mix synthetic rubber, and then extrude for 18 minutes at a pressure of 0.7MPa and a temperature of 56°C;

[0033] B. After the extrusion in step A is completed, put it into the extruder to exit the machine. The extrusion temperature is 70°C, 40°C, 40°C, and 40°C from the head to the screw in order to obtain the inner rubber tube blank;

[0034] C. Put the inner layer rubber tube blank prepared in step B into the vulcanization equipment, under the pressure of 206Kgf...

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PUM

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Abstract

The invention discloses a preparation method of outer-layer rubber of an automobile fuel rubber hose, belonging to the technical field of automobile rubber hoses. The preparation method comprises the steps of firstly, placing the prepared raw materials into an open mill to mix and synthesize rubber, and then, extruding at the pressure of 0.6-0.8MPa and the temperature of 55-60 DEG C for 15-20 minutes; after ending the extruding operation, placing the rubber into an extruder, and extruding the rubber out of the extruder at a certain temperature to obtain an outer-layer rubber hose blank; and placing the prepared outer-layer rubber hose blank into vulcanization equipment to carry out vulcanization treatment at the pressure of 205-210Kgf / cm<2> and the temperature of 150-160 DEG C for 5-10 minutes. Compared with the outer-layer rubber of the automobile fuel rubber hose, which is prepared in the prior art, the outer-layer rubber of the automobile fuel rubber hose, prepared by using the preparation method disclosed by the invention, is good in high temperature resistance, ageing resistance and fuel resistance and low in fuel permeability.

Description

technical field [0001] The invention relates to the technical field of automobile rubber hoses, in particular to a method for preparing the outer rubber of automobile fuel hoses. Background technique [0002] Automotive fuel hose refers to the hose used for fuel transportation in automobiles. The hose is generally composed of inner rubber, middle rubber bonded to the inner rubber, fiber reinforced layer and outer rubber. Since the fuel vapor evaporated in the automobile fuel tank is transported to the carbon tank through the fuel hose and absorbed by activated carbon, each layer of the fuel hose must be made of rubber hose with good fuel resistance, low fuel permeability, high temperature resistance and aging resistance. [0003] However, with the continuous improvement of industrial technology, the performance parameters such as fuel resistance, fuel permeability, high temperature resistance and aging resistance of the outer layer rubber of automobile fuel hose produced by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L77/00C08K13/02C08K3/04C08K3/34C08K3/22C08K5/09C08K5/37B29C47/92B29C48/92
CPCB29C35/02B29C48/92B29C2948/92704C08K2201/014C08L23/0869C08L2203/18C08L77/00C08K13/02C08K3/04C08K3/34C08K2003/222C08K5/09C08K5/17
Inventor 陈永亮
Owner 广西颖航科技有限公司
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