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Ethylene propylene rubber with high temperature resistance and low compression deformation

A technology of ethylene-propylene rubber and binary ethylene-propylene rubber, which is applied in the field of ethylene-propylene rubber, can solve problems such as increased compression deformation and malfunction, and achieve low compression set, good heat resistance, and improved processing fluidity. Effect

Inactive Publication Date: 2013-04-17
SHANDONG MEICHEN ECOLOGY & ENVIRONMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ethylene propylene rubber has outstanding heat resistance, superheated steam resistance, ozone resistance, weather aging resistance and high insulation properties, especially good heat aging resistance, but the traditional vulcanization system ethylene propylene rubber can generally withstand temperatures up to 125 ℃, When the temperature reaches 150°C, the compression deformation of the rubber product increases, so that it cannot work normally, causing quality problems during long-term high-temperature use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] serial number components Dosage (parts by mass) 1 Two yuan ethylene propylene rubber K740 80 2 EPDM 5601 20 3 Antiaging agent RD 1 4 Phenolic Resin 2.5 5 Zinc oxide 5 6 Silica HT199 5 7 Carbon black N550 60 8 Carbon black N774 50 9 Paraffin oil 2280 10 10 Rhine Wax UNTILUS654 3 11 Polyethylene glycol PEG4000 2 12 stearic acid 0.5 13 Cross-linking agent DCP 4 14 Crosslinking Auxiliary TAIC 2 15 Accelerator TRA 0.2

[0027] Hot air aging 150℃×70h performance: hardness change +2;

[0028] Tensile strength change rate +5.6%;

[0029] Change rate of elongation at break -6.7%;

[0030] The compression set is 11.52% at 150℃×22h.

Embodiment 2

[0032] serial number components Dosage (parts by mass) 1 Two yuan ethylene propylene rubber K740 70 2 EPDM 5601 30 3 Antiaging agent RD 2 4 Phenolic Resin 2.5 5 Zinc oxide 5 6 Silica HT199 5 7 Carbon black N550 60 8 Carbon black N774 50 9 Paraffin oil 2280 10 10 Rhine Wax UNTILUS654 3 11 Polyethylene glycol PEG4000 2 12 stearic acid 0.5 13 Cross-linking agent DCP 2.5 14 Crosslinking Auxiliary TAIC 2 15 Accelerator TRA 0.2

[0033] Hot air aging 150℃×70h performance: hardness change +6;

[0034] Tensile strength change rate +8.2%;

[0035] Change rate of elongation at break -7.46%;

[0036] The compression set is 13.46% at 150℃×22h.

Embodiment 3

[0038] serial number components Dosage (parts by mass) 1 Two yuan ethylene propylene rubber K740 50 2 EPDM 5601 50 3 Antiaging agent RD 2 4 Phenolic Resin 2.5 5 Zinc oxide 5 6 Silica HT199 5 7 Carbon black N550 55 8 Carbon black N774 45 9 Paraffin oil 2280 10 10 Rhine Wax UNTILUS654 3 11 Polyethylene glycol PEG4000 2 12 stearic acid 0.5 13 Cross-linking agent DCP 3.5 14 Crosslinking Auxiliary TAIC 2 15 Accelerator TRA 0.2

[0039] Hot air aging 150℃×70h performance: hardness change +5;

[0040] Tensile strength change rate +6.41%;

[0041] Change rate of elongation at break -7.82%;

[0042] The compression set is 15.22% at 150℃×22h.

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Abstract

The invention discloses ethylene propylene rubber with high temperature resistance and low compression deformation, which is prepared from the following raw materials in mass part: 30-80 parts of ethylene propylene rubber, 70-20 parts of ethylene propylene terpolymer rubber, 1-3 parts of anti-aging agent, 2.5-5 parts of phenolic resin, 5-8 parts of zinc oxide, 2.5-5 parts of white carbon black, 50-80 parts of carbon black N550, 45-90 parts of carbon black N774, 10-20 parts of paraffin oil, 1-3 parts of Rhine wax, 1-2 parts of polyethylene glycol, 0.5-1 part of stearic acid, 2-4 parts of cross-linking agent, 2 parts of cross-linking addictive and 0.2-0.5 part of accelerating agent. According to the invention, the ethylene propylene rubber and the ethylene propylene terpolymer rubber are used in combination, and co-vulcanization is performed to the ethylene propylene rubber and the ethylene propylene terpolymer rubber by means of adjusting a vulcanization system, so that the requirement for high temperature resistance can be met and the rubber can obtain lower compression permanent deformation; and moreover, the highest use temperature of the ethylene propylene rubber vulcanized by the vulcanization system can achieve 150 DEG C, can resist the temperature of 175 DEG C in short-time or intermittent use, and has good heat resistance, chemical stability and lower compression deformation.

Description

technical field [0001] The invention relates to an ethylene-propylene rubber. Background technique [0002] With the continuous development of the rubber industry, the use conditions of rubber products are becoming increasingly harsh, and higher requirements are put forward for heat resistance. Many rubber products such as rubber tubes and seals require long-term high temperature resistance of 150 °C. Ethylene propylene rubber has outstanding heat resistance, superheated steam resistance, ozone resistance, weather aging resistance and high insulation performance, especially good heat aging resistance, but the traditional vulcanization system ethylene propylene rubber generally has a temperature resistance of 125 ℃, When the temperature reaches 150°C, the compression deformation of the rubber product will increase accordingly, so that it cannot work normally, causing quality problems during long-term high-temperature use. Contents of the invention [0003] The technical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L61/06C08L71/08C08K13/02C08K3/22C08K3/36C08K3/04C08K5/09C08K5/14
Inventor 张磊
Owner SHANDONG MEICHEN ECOLOGY & ENVIRONMENT CO LTD
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