Chlorinated polyethylene rubber hose and its preparation method

A technology of chlorinated polyethylene and polyethylene rubber hose, applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of inability to achieve high-temperature rapid vulcanization and complex processes, achieve uniform physical and mechanical properties, simplify processes, and save rubber materials Effect

Inactive Publication Date: 2008-02-20
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] To produce a CM bellows with an inner diameter of 30mm, a wall thickness of 2mm, and a length of 150mm, the steps are as follows:

[0015] Select a plastic injection machine with a capacity of 3000CC, and design a suitable mold. After the CM rubber enters the machine barrel from the material tray, the plasticizing device heats and plasticizes the rubber, and then injects the plunger Under the impetus of 15Mpa, the rubber material is injected into the tightly closed mold cavity, the temperature of the upper and lower molds of the mold is controlled at 150°C, the temperature of the feeding section and the injection section are controlled at 50°C, and the holding pressure The injection mold is 12Mpa, the mold clamping pressure is 13Mpa, the glue injection volume is 190CC, and the vulcanization time is 5 minutes for vulcanization. After the vulcanization, the injection mold is opened and the product is taken out.

[0016] The rubber hose is molded at one time, with precise ...

Embodiment 2

[0021] To produce a CM rubber hose with an inner diameter of 60mm, a wall thickness of 4mm, and a length of 275mm, the steps are as follows:

[0022] Select a suitable glue injection machine and design a suitable mold. After the CM rubber used in the past enters the machine barrel from the material tray, and then under the push of the injection plunger, inject the glue into the tightly closed cylinder with a pressure of 16Mpa. In the mold cavity, the temperature of the upper and lower molds of the mold is controlled at 165°C, the temperature of the feeding section and the injection section are controlled at 65°C, the holding pressure is 15Mpa, the mold closing pressure is 15Mpa, the injection volume is 550CC, and the vulcanization The time is 8 minutes for vulcanization, and after the vulcanization is finished, the injection mold is opened to take out the product.

[0023] The rubber hose is molded at one time, with precise geometric dimensions, good appearance, and few rubber...

Embodiment 3

[0027] To produce a CM bellows with an inner diameter of 75mm, a wall thickness of 6mm, and a length of 400mm, the steps are as follows:

[0028] Select a plastic injection machine with a capacity of 3000CC, and design a suitable mold. After the CM rubber enters the machine barrel from the material tray, the plasticizing device heats and plasticizes the rubber, and then injects the plunger Under the impetus of 17Mpa, the rubber material is injected into the tightly closed mold cavity, the temperature of the upper and lower molds of the mold is controlled at 180°C, the temperature of the feeding section and the injection section are controlled at 80°C, and the holding pressure The mold clamping pressure is 18Mpa, the injection volume is 850CC, and the vulcanization time is 11 minutes for vulcanization. After the vulcanization, the injection mold is opened and the product is taken out.

[0029] The rubber hose is molded at one time, with precise geometric dimensions, good appear...

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Abstract

The invention relates to a chlorinated polyethylene pipe and the preparation method. The CM plastic pipe of the invention is a single layer in structure with the thickness of 2-6mm. The pipe is produced by the plastic injection technology. After the CM plastic material is fed into a cylinder from a feed pan, the plastic material are injected into a die cavity under a pressure of 15-17Mpa when being pushed by an injection plunger, the mold pressure is 12-18Mpa and the dwell pressure is 12-18Mpa, the temperature of the upper die and the lower die are controlled at 150-180 DEG C, the temperature of the feeding section and the injection section are controlled at 50-80 DEG C and sulfurize within 5-11 minutes. The CM plastic pipe produced according to this method can be used for producing corrugated pipe which is difficult to make by the extrusion technology; the invention simplifies the technical flow and the molding is finished by one plastic injection, the labor intensity is low, the mechanization degree and automation degree are high and the rapid high-temperature sulfuration of rubber products can be realized; As for the appearance and performance of the product, the physical and mechanical property of the product is uniform and stable, the physical dimension is accurate, the standard-piece rate is high and the plastic edge is less, which can save plastic material and meet the requirements of customer on the various performances of the product.

Description

technical field [0001] The invention relates to the technical field of rubber hoses, in particular to a chlorinated polyethylene rubber hose and a preparation method. Background technique [0002] Chlorinated polyethylene (CM) elastomer, because it has comprehensive properties such as ozone resistance, weathering resistance, wear resistance, oil resistance, flame resistance, etc., compared with acrylate rubber, etc., its price is low and its performance is superior. Therefore, the application in important applications such as wires, cables and hoses is growing rapidly. [0003] In recent years, the development trend of automobiles has expanded the demand for high-performance, low-cost elastomers. This development trend includes improving the resistance of rubber hoses, maintaining low costs, and being more economical and practical, making the application of chlorinated polyethylene (CM) elastomers more and more. At present, the extrusion process is used to produce rubber h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/04B29C45/00
Inventor 张洪起王泽祥张洪祥王金财王学荣
Owner TIANJIN PENGYI GRP CO LTD
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