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Cold-resistant EPDM (ethylene propylene diene monomer) composite material and preparation method thereof

A composite material and cold-resistant technology, applied in the field of EPDM composite materials and their preparation, can solve problems such as general cold-resistant performance, and achieve the effects of low dynamic heat generation, improved product reliability, and good physical and mechanical properties.

Active Publication Date: 2019-08-30
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Vibration-absorbing pads usually need to be used in alpine regions. It is required to be used normally in the temperature environment of -40°C, and the extreme low temperature environment can be as low as -50°C. Higher requirements are placed on the cold resistance of rubber. Although EPDM is Shaped amorphous rubber, but the glass transition temperature of raw rubber is about -58°C, while the glass transition temperature of vulcanized rubber is about -50°C, and the cold resistance is average

Method used

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  • Cold-resistant EPDM (ethylene propylene diene monomer) composite material and preparation method thereof
  • Cold-resistant EPDM (ethylene propylene diene monomer) composite material and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0028] The cold-resistant EPDM composite material in the present embodiment comprises the following components in parts by weight: 70 parts of EPDM, 30 parts of EPDM, 5 parts of zinc oxide, 1 part of stearic acid, 2-thiol benzimidazole 2 parts, 50 parts of high wear-resistant carbon black, 50 parts of fast extruded carbon black, 40 parts of white carbon black, 21 parts of trioctyl phosphate, 14 parts of dioctyl sebacate, 25 parts of paraffin oil, 0.7 parts of sulfur, 1 part of N,N'-m-phenylene polymaleimide, 4 parts of dicumyl peroxide, 1.5 parts of triallyl isocyanurate, 3 parts of fatty acid ester processing aids, silane coupling 4 doses.

[0029] The preparation method of the cold-resistant EPDM composite material in the present embodiment may further comprise the steps:

[0030] (1) According to the above formula and ingredients, add EPDM and EPDM to the general rubber mixing equipment, then add metal oxide, stearic acid, anti-aging agent, softening plasticizer and other ...

Embodiment 2

[0034] The cold-resistant EPDM composite material in the present embodiment comprises the following components in parts by weight: 50 parts of EPDM, 50 parts of EPDM, 5 parts of zinc oxide, 1 part of stearic acid, 2-thiol benzimidazole 2 parts, 50 parts of high wear-resistant carbon black, 40 parts of fast extruded carbon black, 30 parts of white carbon black, 16 parts of trioctyl phosphate, 12 parts of dioctyl sebacate, 15 parts of paraffin oil, 0.5 parts of sulfur, 0.7 parts of N,N'-m-phenylene polymaleimide, 5 parts of dicumyl peroxide, 2 parts of triallyl isocyanurate, 3 parts of fatty acid ester processing aids, silane coupling 3 doses.

[0035]The preparation method of the cold-resistant EPDM composite material in this example is the same as that in Example 1.

Embodiment 3

[0037] The cold-resistant EPDM composite material in the present embodiment comprises the following components in parts by weight: 30 parts of EPDM, 70 parts of EPDM, 5 parts of zinc oxide, 1 part of stearic acid, 2-thiol benzimidazole 2 parts, 40 parts of high wear-resistant carbon black, 40 parts of fast extruded carbon black, 20 parts of white carbon black, 15 parts of trioctyl phosphate, 10 parts of dioctyl sebacate, 10 parts of paraffin oil, 0.3 parts of sulfur, 0.5 parts of N,N'-m-phenylene polymaleimide, 6 parts of dicumyl peroxide, 2.3 parts of triallyl isocyanurate, 3 parts of fatty acid ester processing aids, silane coupling 2 doses.

[0038] The preparation method of the cold-resistant EPDM composite material in this example is the same as that in Example 1.

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Abstract

The invention discloses a cold-resistant EPDM (ethylene propylene diene monomer) composite material which comprises the following components in parts by weight: 100 parts of crude rubber, 30-60 partsof a softening plasticizer, 90-140 parts of a reinforcing agent, 6-9 parts of a vulcanization accelerator and 2-4 parts of an anti-aging agent, wherein the crude rubber comprises an EPDM and an ethylene butene diene monomer; and the mass ratio of the EPDM to the ethylene butene diene monomer is (30:70)-((70:30). By optimizing constitution components of the crude rubber, the softening plasticizer,the vulcanization accelerator and the like, the glass-transition temperature of a rubber material can be reduced, and the rubber material has good low-temperature properties, is capable of maintainingthe elasticity and normal working capabilities at a low temperature and improving product reliability, and is applicable to working conditions at minus 40 DEG C or even minus 50 DEG C.

Description

technical field [0001] The invention belongs to the field of rubber materials, in particular to an EPDM composite material and a preparation method thereof. Background technique [0002] Vibration-absorbing backing plates for high-speed railways are applied under self-compacting concrete of the track, and the force direction is vertical compression and transverse stretching. The compression resistance and modulus of the rubber material are high, and the fatigue performance and service life of the product are required. harsh. Ethylene-propylene-diene rubber (hereinafter referred to as EPDM) is a terpolymer of random copolymers of ethylene and propylene plus a small amount of non-conjugated diene as a vulcanization point monomer. The molecular structure of ethylene-propylene-diene rubber makes it unique. Excellent performance in aging resistance, weather resistance, chemical resistance, hot water and water vapor resistance, impact elasticity, etc., and it also has the charact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/08C08L91/06C08K13/06C08K5/521C08K5/11C08K3/04C08K9/06C08K3/36C08K5/14C08K3/06
CPCC08L23/16C08L23/08C08L91/06C08K13/06C08K5/521C08K5/11C08K3/04C08K9/06C08K3/36C08K5/14C08K3/06
Inventor 肖程远谭莲影王雪飞黄良平刘权穆洪帅杨瑞蒙肖同亮
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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