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Ethene/acrylic ester rubber hose preparation method

An acrylate and rubber hose technology, which is applied to tubular items, other household appliances, household appliances, etc., can solve the problems of inability to achieve high-temperature rapid vulcanization and complex processes, and achieve uniform physical and mechanical properties, simplified processes, and accurate geometric dimensions.

Inactive Publication Date: 2008-07-02
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the extrusion process is used to produce rubber hoses for automobiles. The process is relatively complicated and cannot achieve high-temperature rapid vulcanization.

Method used

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  • Ethene/acrylic ester rubber hose preparation method
  • Ethene/acrylic ester rubber hose preparation method
  • Ethene/acrylic ester rubber hose preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] To produce an AEM bellows with an inner diameter of 60mm, an outer diameter of 75mm, and a length of 400mm, the steps are as follows:

[0012] Select a plastic injection machine with a capacity of 3000CC, and design a suitable mold. After the AEM-G rubber material of DuPont Company enters the machine barrel from the material tray, the rubber material is heated and plasticized by the action of the plasticizing device. , and then under the push of the injection plunger, the rubber material is injected into the tightly closed mold cavity at a certain speed at a pressure of 165±5bar, and the temperature of the upper and lower molds of the mold is controlled at 175°C±2°C. The temperature of the material section and the injection section are controlled at 65°C±2°C, the holding pressure is 165±5bar, the mold clamping pressure is 175±5bar, the injection volume is 1200+10CC, the vulcanization time is 6min for vulcanization, and it is opened after vulcanization. Inject the mold a...

Embodiment 2

[0017] To produce an AEM hose with an inner diameter of 30mm, an outer diameter of 45mm, and a length of 200mm, the steps are as follows:

[0018] Choose a suitable glue injection machine and design a suitable mold. Put the AEM glue used in the previous extrusion process into the machine barrel from the tray, and then push the glue with a pressure of 150±5bar under the push of the injection plunger. The material is injected into the tightly closed mold cavity at a certain speed, the temperature of the upper and lower molds of the mold is controlled at 150°C±2°C, the temperature of the feeding section and the injection section are controlled at 50°C±2°C, and the holding pressure The mold clamping pressure is 165±5bar, the mold clamping pressure is 175±5bar, the injection volume is 650+10CC, and the vulcanization time is 3min for vulcanization. After the vulcanization, the injection mold is opened to take out the product.

[0019] The rubber hose is molded at one time, with prec...

Embodiment 3

[0023] To produce an AEM bellows with an inner diameter of 75mm, an outer diameter of 85mm, and a length of 400mm, the steps are as follows:

[0024] Select a plastic injection machine with a capacity of 3000CC, and design a suitable mold. After the AEM rubber material enters the barrel from the material tray, the rubber material is heated and plasticized by the action of the plasticizing device, and then injected into the plunger Under the impetus of 180±5bar, the rubber material is injected into the tightly closed mold cavity at a certain speed, and the temperature of the upper and lower molds of the mold is controlled at 180°C±2°C. The temperature of the feeding section and the injection section The temperature is controlled at 80°C±2°C, the holding pressure is 165±5bar, the mold clamping pressure is 175±5bar, the injection volume is 1750+10CC, and the vulcanization time is 8min for vulcanization. After vulcanization, the injection mold is opened and the product is taken out...

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Abstract

The present invention is injection process to produce ethyl acrylate copolymer pipe. AEM material is first made to enter the injector tube from the material pan and injected with the injecting plunger in the pressure of 150-180 bar and certain speed into the mold cavity at the upper and lower mold temperature controlled in 150-180 deg.c and material feeding section temperature and injecting section temperature controlled in 50-80 deg.c; and then sulfurized for 2-10 min. The said technological process can produce hard-to-produce corrugated pipe, and has simple technological process, simple operation, once injection, low labor strength, high mechanization and automation, high temperature and fast sulfurization of rubber product and short production period. The pipe product has homogeneous and stable physical and mechanical performance, precise sizes, high quality and less material loss.

Description

technical field [0001] The invention relates to the technical field of rubber hoses, in particular to a method for preparing vinyl / acrylate rubber hoses. Background technique [0002] Since its introduction in 1975, ethylene / acrylate (AEM) elastomer has been compared with fluorine rubber due to its comprehensive properties of high and low temperature resistance (175°C~-40°C), oil resistance, compression set resistance and wear resistance. Compared with its low price and superior performance, its application in important applications such as sealing rings, gaskets and hoses is growing rapidly. [0003] The development trend of automobiles in recent years has expanded the demand for high-performance elastomers. This development trend includes increasing the operating temperature in the engine compartment, the application of more aggressive lubricants and coolants, and the extension of the warranty period of accessories. All of these make ethylene / acrylate elastomers more and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/00B29C45/53B29C45/77B29C45/78B29C35/02B29K33/04B29L23/00
Inventor 薛俊芳张学振王学荣张洪起王泽祥
Owner TIANJIN PENGYI GRP CO LTD
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