Ethylene-propylene-diene monomer composition

A technology for EPDM rubber and composition, applied in the rubber field, can solve the problems of single, low effect, low bond energy, etc., and achieve the effects of high chemical stability, good protection, and high bond energy.

Active Publication Date: 2011-04-06
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The existing formula uses a single anti-aging agent RD as the protection system. Although it can play a certain protective role, the effect will also decrease when the rubber needs to be exposed to a high temperature envir...

Method used

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  • Ethylene-propylene-diene monomer composition
  • Ethylene-propylene-diene monomer composition
  • Ethylene-propylene-diene monomer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mass unit: gram

[0019] Raw material composition

parts by mass

EPDM

100

Quickly squeeze out N550

160

Paraffin oil

10

magnesium oxide

3

Antiaging agent RD

1

Antiager MB

1

polyethylene glycol

2

Auxiliary cross-linking agent TAC

1

Bis(tert-butylperoxycumene)benzene

10

total

288

[0020] Mixing and processing according to the raw materials and dosage in the listed formula: weighing of rubber and raw materials - one stage of internal mixing - one stage of open mixing - next piece - second stage of internal mixing - second stage of open mixing - next piece - vulcanized rubber sheet - cut according to the standard Pattern - for experimental testing.

[0021] The following are the performance test results of EPDM rubber:

[0022]

Embodiment 2

[0024] Mass unit: gram

[0025] Raw material composition

parts by mass

EPDM

100

Quickly squeeze out N550

100

Paraffin oil

40

magnesium oxide

5

Antiaging agent RD

2

Antiager MB

2

polyethylene glycol

4

Auxiliary cross-linking agent TAC

5

Bis(tert-butylperoxycumene)benzene

2

total

260

[0026] Mixing and processing according to the raw materials and dosage in the listed formula: weighing of rubber and raw materials - one stage of internal mixing - one stage of open mixing - next piece - second stage of internal mixing - second stage of open mixing - next piece - vulcanized rubber sheet - cut according to the standard Pattern - for experimental testing.

[0027] The following are the performance test results of EPDM rubber:

[0028]

[0029]

Embodiment 3

[0032] Mixing and processing according to the raw materials and dosage in the listed formula: weighing of rubber and raw materials - one stage of internal mixing - one stage of open mixing - next piece - second stage of internal mixing - second stage of open mixing - next piece - vulcanized rubber sheet - cut according to the standard Pattern - for experimental testing.

[0033] The following are the performance test results of EPDM rubber:

[0034]

[0035]

[0036] By analyzing the results obtained from the above formula, the EPDM formula of this invention has met the retention rate of the tensile properties (strength and elongation at break) under high-temperature thermal aging conditions at more than 65%, so it is better It embodies the advantage of the formula of the present invention in the thermal aging resistance of EPDM rubber.

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PUM

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Abstract

The invention relates to an ethylene-propylene-diene monomer composition. The ethylene-propylene-diene monomer composition comprises the following components in parts by weight: 100 parts of ethylene-propylene-diene monomer, 100 to 160 parts of fast extrusion N 550, 10 to 40 parts of liquid petrolatum, 3 to 5 parts of magnesium oxide, 1 to 2 parts of antiager RD, 1 to 2 parts of antiager MB, 2 to 4 parts of polyethylene glycol, 1 to 5 parts of assistant crosslinker and 2 to 10 parts of bis (tert-butyl isopropyl peroxide) benzene. In the invention, a peroxide curing agent is utilized, a -C-C-bond can be formed on products in the cross-linking process, the bond energy is high, the heat and chemical stability is high, and the products have excellent heat oxygen heat aging resistant performance. The ethylene-propylene-diene monomer formula ensures that the retention rate of the tensile property (brute force and pull-apart extension) is more than 65% under the conditions of high temperature heat aging, therefore, the advantage of the formula on the heat aging resistant performance of the ethylene-propylene-diene monomer is better reflected.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a high-temperature-resistant EPDM composition. Background technique [0002] With the development of the automobile industry, the cabin body of the automobile engine is getting smaller and smaller, and the temperature of the cabin body is required to gradually increase. It plays a vital role in the radiator hose, which mainly plays a cooling role. It is used as this product High-quality rubber compounds have gradually attracted people's attention in their high temperature resistance. [0003] In the past, the radiator hose materials used in automobiles were generally aimed at long-term use at 135°C, up to 150°C, and the retention rate of product tensile properties (strength, elongation at break) was above 65%; The compactness leads to a rapid increase in the temperature near it, thereby increasing the resistance of the radiator hose material to 150°C for long-term use, up to 160-...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/02C08K3/22C08K5/14C08K5/3437C08K5/378C08K5/3492
Inventor 张洪起胡金明
Owner TIANJIN PENGYI GRP CO LTD
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