Ethylene-propylene-diene monomer (EPDM) material for super high and low temperature resistant sealing element and preparation method of EPDM material

A technology of EPDM rubber and seals, which is applied in the field of rubber, can solve the problems of large differences from comparison documents and poor product use effects, and achieve the effects of optimized physical properties and excellent sealing effects

Active Publication Date: 2013-11-13
HEBEI XIANGYI MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Through comparison, it is found that there is a big difference between this application and the comparative document, and the product use effect is not as good as this application

Method used

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  • Ethylene-propylene-diene monomer (EPDM) material for super high and low temperature resistant sealing element and preparation method of EPDM material
  • Ethylene-propylene-diene monomer (EPDM) material for super high and low temperature resistant sealing element and preparation method of EPDM material
  • Ethylene-propylene-diene monomer (EPDM) material for super high and low temperature resistant sealing element and preparation method of EPDM material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of EPDM rubber material for super high and low temperature resistant seals, its composition and parts by weight are as follows:

[0029]

[0030]

[0031] The preparation method of above-mentioned sizing material is as follows:

[0032] ⑴ Each type of ethylene-propylene rubber (EPDM 578f, EPDM 8340A, EPDM 4045) is masticated separately, and the materials are taken according to the ratio of raw materials, mixed in the open mill, and mixed evenly before mixing;

[0033] (2) Mixing is carried out in the internal mixer, the top bolt is pressurized at 0.6 MPa, and the maximum temperature is set at 110 degrees. The order of feeding: ethylene propylene rubber, carbon black, paraffin oil, organic zinc (zinc methacrylate), anti-aging agent , knead for 9 minutes, open the mill to discharge the sheet, and cool to below 60 degrees;

[0034] (3) Put the above-mentioned film into the internal mixer, add vulcanizing agent, auxiliary cross-linking agent, peroxide (dicumyl...

Embodiment 2

[0038] A kind of EPDM rubber material for super high and low temperature resistant seals, its composition and parts by weight are as follows:

[0039]

[0040]

[0041] Preparation method is with embodiment 1.

[0042] It has been proved by experiments that the present invention can improve and optimize its characteristics by using different compounding techniques and special additives, and the obtained ethylene-propylene rubber can be used for a long time in the range of -50 to 150 degrees, and the sealing products made of this rubber can be used at -50 It can maintain excellent sealing effect in the environment of 150 degrees. After repeated tests, multi-model coordination, reasonable proportions, and optimization of process performance and physical properties, all indicators of the test results exceeded German standards.

[0043] The sizing material of the invention expands the adaptable temperature range of EPDM -60°C to 170°C, and its application can be used for no...

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Abstract

The invention relates to an ethylene-propylene-diene monomer (EPDM) material for a super high and low temperature resistant sealing element and a preparation method of the EPDM material. The EPDM material comprises the following components in parts by weight: 40 parts of EPDM 578f, 30 parts of EPDM 8340A, 30 parts of EPDM 4045, 1-5 parts of HAY organic zinc, 10-50 parts of carbon black N330, 5-20 parts of paraffin oil, 1-10 parts of vulcanizing agent, 1-8 parts of assistant crosslinker and 1-5 parts of peroxide. By adopting different matching technologies and special auxiliaries, the characters of the EPDM material can be improved and optimized, the obtained EPDM material can be used within the temperature range from 50 DEG C below zero to 150 DEG C for a long term, and a sealing product made of the EPDM material can keep an excellent sealing effect within the temperature range from 50 DEG C below zero to 150 DEG C.

Description

technical field [0001] The invention belongs to the field of rubber, and relates to an EPDM rubber material, in particular to an EPDM rubber material for super-high-resistant and low-temperature sealing parts and a preparation method thereof. Background technique [0002] EPDM is a kind of synthetic rubber, which has the characteristics of various types and specific properties. The common property of EPDM rubber is excellent aging resistance. Generally, the compound rubber can be used in the environment of -40 degrees to 120 degrees. If the temperature range is large, it is no longer suitable and does not meet the needs of some industries. [0003] Through searching, it is found that the following patent documents related to the present application, the specific disclosure content is as follows: [0004] 1. Pre-wet and anti-adhesive EPDM waterproof membrane (CN102719023A), including two parts: EPDM waterproof membrane and adhesive layer. The production formula is: 1) EPDM w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K5/098C08K5/14
Inventor 靳温学申会杰
Owner HEBEI XIANGYI MEDICAL TECH
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