Industrial production method for ethylene propylene diene rubber molded sealed cell sponge rubber

A technology of EPDM rubber and closed-cell sponge, which is applied in the field of EPDM rubber molded closed-cell sponge rubber, can solve the problems that industrial production cannot meet the requirements, is prone to scorching, and has a large calorific value, and achieves production The effect of controllable conditions and stable production process

Active Publication Date: 2010-06-09
连云港冠泰汽车配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this experimental condition can only be adapted to small-scale foaming materials in the laboratory, and cannot meet the requirements for industrial production.
At the same time, the foaming agent H generates a large amount of heat and rubber is a poor conductor of heat, so it is prone to scorching.

Method used

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  • Industrial production method for ethylene propylene diene rubber molded sealed cell sponge rubber
  • Industrial production method for ethylene propylene diene rubber molded sealed cell sponge rubber
  • Industrial production method for ethylene propylene diene rubber molded sealed cell sponge rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh materials according to the following formula: EPDM: 500g, carbon black: 250g, naphthenic oil: 250g, pro-BZ: 0.6g, pro-D: 0.5g, pro-TRA: 0.6g, pro-M: 0.5g, stearic acid: 8g, Zinc Oxide: 15g, Ac: 30g, S: 0.8g

[0031] Molding: Control the temperature of the two rollers of the open mill to be kept below 50°C. The raw rubber is smelted twice when the roller distance scale is 1, and then the roller distance is adjusted to 0 scale, and the triangular bag is made 4 to 6 times. Until the glue is translucent.

[0032] Mixing: Put the qualified EPDM rubber into the internal mixer and pressurize it. When the temperature rises to 80°C, raise the pressure cover, add carbon black, naphthenic oil and foaming aids, vulcanization accelerators, anti-aging After the pressure cover is semi-closed and empty for about 1 minute, the upper pressure cover is completely pressed, and the glue is removed when the temperature rises to 120°C, and it is sent to the two-roller for kneading. Th...

Embodiment 2

[0038] Weigh materials according to the following formula: EPDM: 500g, carbon black: 250g, naphthenic oil: 100g, pro-BZ: 0.6g, pro-D: 0.5g, pro-TRA: 0.6g, pro-M: 0.5g, stearic acid: 4g, Zinc Oxide: 8g, Ac: 16g, S: 13g

[0039] Plastic refining: control the temperature of the two rollers of the open mill, refine the raw rubber for 2 times when the roller distance scale is 1, then adjust the roller distance to 0 scale, make triangular bags 4 to 6 times, until the rubber material is Translucent.

[0040] Mixing: put the qualified EPDM rubber into the internal mixer and pressurize it. When the temperature rises to 85°C, raise the pressure cover, add carbon black, naphthenic oil, foaming aids, vulcanization accelerators, anti-aging After the pressure cover is semi-closed for about 1 minute, press the upper pressure cover completely, and when the temperature rises to 118°C, the glue will be removed and sent to the two rollers for kneading. The kneaded rubber material is kneaded on...

Embodiment 3

[0045]Weigh the materials according to the following formula: EPDM: 500g, carbon black: 250g, naphthenic oil: 100, promote BZ: 0.6g, promote D: 0.5g, promote TRA: 0.6g, promote M: 0.5g, stearic acid: 8g, Zinc Oxide: 8g, Ac: 16g, S: 5g

[0046] Plastic refining: control the temperature of the two rollers of the open mill, refine the raw rubber for 2 times when the roller distance scale is 1, then adjust the roller distance to 0 scale, make triangular bags 4 to 6 times, until the rubber material is Translucent.

[0047] Mixing: Put the qualified EPDM rubber into the internal mixer and pressurize it. When the temperature rises to 90°C, raise the pressure cover, add carbon black, naphthenic oil and foaming aids, vulcanization accelerators, anti-aging agent. After the pressure cover is half-closed and empty for about 1 minute, the upper pressure cover is completely pressed, and when the temperature rises to 110°C, the glue is removed and sent to the two-roller for kneading. The ...

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Abstract

The invention discloses an industrial production method for ethylene propylene diene rubber molded sealed cell sponge rubber and, relates to an industrial preparation method for a foaming material with a high foaming ratio. The method comprises the following steps of performing plastication, mixing, refining, and foaming and vulcanization molding on raw rubber, and is characterized in that carbon black, naphthenic oil, a blowing promoter, a vulcanization accelerator and an anti-aging agent are added in the mixing process to perform the mixing; a foaming agent Ac and a vulcanizing agent are added in the refining process to perform the refining; and the vulcanization conditions in the foaming and vulcanization molding process are that: the pressure is 15 to 20 MPa; the temperature is 160 to 180 DEG C; and the vulcanizing time is 3,000 to 3,500 seconds. The industrial production method is researched and developed based on market demands to turn laboratory researches to industrialized researches, ensure that the production condition can be controllable and the production process is stable. The industrial production method selects homemade rubber masses, selects the foaming agent Ac to replace the foaming agent H, and prepares an EPDM molded sponge rubber product in accordance with the requirements on the industrial production by adjusting the mixture ratio of various auxiliary agents in a formula and controlling process conditions.

Description

technical field [0001] The invention relates to an industrial preparation method of a foaming material with a high expansion ratio. More specifically, the present invention relates to an industrial production method of EPDM molded closed-cell sponge rubber. Background technique [0002] As we all know, foam rubber is a composite material filled with gas. Compared with rubber, it has many valuable properties, such as light weight, high specific strength, strong ability to absorb impact loads, and good heat and sound insulation effects. Therefore, it is widely used in industries such as automobile, electronics, chemical industry and machinery. [0003] Sponge rubber is a porous high-elastic material, commonly known as porous rubber, foam rubber, microporous rubber or mesh rubber, and is a general term for various rubbers with a porous structure. According to different pore structures, it can be divided into closed pores (the pores are not connected to each other), open pores...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/10C08L23/16C08K13/02C08K5/23C08K3/22C08K5/09C08K3/06C08K5/01C08K3/04B29B7/28B29B7/72B29C35/02
Inventor 陶宇仲崇盟于金海刘春林陶国良
Owner 连云港冠泰汽车配件有限公司
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