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Modified foaming ethylene propylene diene rubber

A modified technology of EPDM rubber, which is applied in the field of foamed rubber, can solve the problems of limited use and large shrinkage of rubber foamed sheets, and achieve improved shrinkage performance, high economic value, and good tensile strength Effect

Inactive Publication Date: 2009-10-21
上海大裕橡胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the originally used foam has good tensile strength, corrosion resistance, paint inertia resistance, ozone resistance, etc., the shrinkage rate of the rubber foam sheet is very large, and it will not stop over time. The shrinkage, so that it limits its use in some high-precision fields, has been a big problem so far
Moreover, due to foaming in its manufacture due to cutting, batching and other processing, a lot of waste will be generated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Formula: (parts by weight)

[0025] 100 parts of EPDM rubber, 30 parts of polyolefin, 2 parts of active agent, 20 parts of plasticizer, 10 parts of reinforcing agent, 1 part of foaming agent, 1 part of crosslinking agent, polyolefin is polyvinyl chloride, average The molecular weight is 100,000;

[0026] The active agent is zinc oxide; the plasticizer is selected from white ointment; the reinforcing agent is carbon black; the foaming agent is azodicarbonamide; the crosslinking agent is dicumyl peroxide;

[0027] Preparation:

[0028] (1) EPDM rubber, polyolefin, active agent, plasticizer, reinforcing agent, foaming agent, crosslinking agent, foaming waste and modifier magnesium methacrylate are batched at room temperature, and then Plasticizing at a kneading temperature of 80°C, the plasticizing time is 2 minutes per kilogram, and then plasticizing and kneading at a kunning temperature of 160°C, the plasticizing and kneading time is 2 minutes per kilogram, and then kn...

Embodiment 2

[0036] Formula: (parts by weight)

[0037] 150 parts of EPDM rubber, 10 parts of polyolefin, 10 parts of active agent, 10 parts of plasticizer, 20 parts of reinforcing agent, 20 parts of foaming agent, 10 parts of crosslinking agent, 100 parts of foaming waste, modified 10 parts of magnesium methacrylate (MMG);

[0038] The polyolefin is polypropylene (average molecular weight 200,000);

[0039] Active agent is stearic acid, and plasticizer is selected from white ointment; Reinforcing agent is carbon black; Foaming agent is azodicarbonamide; Cross-linking agent is dicumyl peroxide; Foaming waste is embodiment 1 batch of waste generated from leather, molding and other processing processes.

[0040] The preparation method is the same as in Example 1, and the foaming waste and modifier magnesium methacrylate are mixed together with other materials.

[0041] The test results are as follows:

[0042] Tensile strength: (supply status) 1.03Mpa, (after 900C / 94h heat aging) 1.23Mpa...

Embodiment 3

[0055] Adopt the formula identical with embodiment 2, wherein, adopt the processing waste material of embodiment 2, foaming waste material 50 parts, modifying agent magnesium methacrylate (MMG) 2 parts;

[0056] Shrinkage detection result is the same as embodiment 2.

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Abstract

The invention provides modified foaming ethylene propylene diene rubber which comprises the following components according to the weight percent: 100-150 of ethylene propylene diene rubber, 10-30 of polyolefine, 2-10 of active agent, 10-20 of plasticizing agent, 10-20 of strengthening agent, 1-20 of foaming agent and 1-10 of cross linking agent. The foaming ethylene propylene diene rubber not only maintains the advantages of tensile strength, corrosion resistance, paint inert resistance, ozone resistance and the like of the original foaming ethylene propylene diene rubber, is greatly improved in the contraction property and the stability over time, is greatly expanded in the application in high-precision field, and has larger economic value.

Description

technical field [0001] The invention relates to a foam rubber. Background technique [0002] Due to its wide range of uses, foam rubber is used in various fields such as automobiles, ships, construction, road transportation, rail transportation, printing and dyeing, etc. [0003] Although the originally used foam has good tensile strength, corrosion resistance, paint inertia resistance, ozone resistance, etc., the shrinkage rate of the rubber foam sheet is very large, and it will not stop over time. The shrinkage, so that it limits its use in some high-precision fields, has been a big problem so far. And due to foaming in its manufacture due to cutting, batching and other processing, a lot of waste can be produced. It causes a lot of waste and environmental pollution, which is more and more suitable for the development of society. Contents of the invention [0004] The purpose of the present invention is to provide a modified foamed EPDM rubber to overcome the above-men...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/00C08K13/02C08J9/10C08L51/04C08J3/24B29B7/72B29B13/02
Inventor 薛伟民曹桂节朱指明张明坤
Owner 上海大裕橡胶制品有限公司
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