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High performance rubber sheath rubber material

A technology of rubber sheath and rubber material, which is applied in the direction of rubber insulators, organic insulators, conductors, etc., can solve the problems of ozone resistance, poor weather resistance, short life, easy aging, etc., and achieve good ozone resistance and weather resistance The effect of performance and long life

Active Publication Date: 2012-11-28
中国化工集团曙光橡胶工业研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the rubber sheath materials used in industry or daily use generally expose a series of problems such as easy aging, cracking, low bond strength, oil resistance, and short life, which affect the use of rubber sheaths.
Ethylene Propylene Diene Monomer (EPDM) is a highly saturated rubber with superior ozone resistance, weather resistance, temperature resistance and electrical insulation, but its oil resistance, bonding performance and wear resistance are poor
Nitrile rubber is a kind of highly unsaturated rubber, which has the advantages of oil resistance, wear resistance, good adhesion and small compression permanent deformation, but it is poor in ozone resistance and weather aging resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of high-performance rubber sheath compound, its material and material weight ratio are:

[0026] EPDM4045 30

[0027] NBR-18 70

[0028] ZnO 5

[0029] stearic acid 1

[0030] Antiaging agent 4020 1.5

[0031] Antiaging agent RD 1.5

[0032] N330 40

[0033] DOP 7

[0034] paraffin oil 3

[0035] S 0.5

[0036] DTDM 0.3

[0037] DM 1.2

[0038] PZ 0.25

[0039] The rubber sheath rubber material has been tested, and its physical properties are as follows:

[0040] Hardness (Shore A) / degree 63

[0041] Tensile strength / Mpa 11.3

[0042] Elongation at break / % 350

[0043] Compression set / % (100℃×22h) 25

[0044] Heat aging resistance (125℃×24h):

[0045] Tensile strength change rate / % -15

[0046] Change rate of elongation at break / % +16

[0047] Ozone crack resistance time (ozone concentration 100pphm) > 120h

Embodiment 2

[0049] A kind of high-performance rubber sheath compound, its material and material weight ratio are:

[0050] EPDM3950 40

[0051] NBR-26 60

[0052] ZnO4

[0053] stearic acid 1

[0054] Antiaging agent 4020 1.5

[0055] Antiaging agent RD 1.5

[0056] N774 60

[0057] DOP 7

[0058] paraffin oil 5

[0059] S 0.2

[0060] DTDM 0.3

[0061] HVA-2 1.2

[0062] DCP 2.5

[0063] The rubber sheath rubber material has been tested, and its physical properties are as follows:

[0064] Hardness (Shore A) / degree 62

[0065] Tensile strength / Mpa 10.8

[0066] Elongation at break / % 410

[0067] Compression set / % (100℃×22h) 22

[0068] Heat aging resistance (125℃×24h):

[0069] Tensile strength change rate / % -13

[0070] Change rate of elongation at break / % +14

[0071] Ozone crack resistance time (ozone concentration 100pphm) > 120h

Embodiment 3

[0073] A kind of high-performance rubber sheath compound, its material and material weight ratio are:

[0074] EPDM3950 50

[0075] NBR-26 50

[0076] ZnO 5

[0077] stearic acid 1

[0078] Antiaging agent 4020 1.5

[0079] Antiaging agent RD 1.5

[0080] N660 50

[0081] DOP 7

[0082] paraffin oil 7

[0083] S 0.5

[0084] DTDM 0.3

[0085] DCP 2

[0086] D 0.5.

[0087] The rubber sheath rubber material has been tested, and its physical properties are as follows:

[0088] Hardness (Shore A) / degree 65

[0089] Tensile strength / Mpa 10.5

[0090] Elongation at break / % 380

[0091] Compression set / % (100℃×22h) 23

[0092] Heat aging resistance (125℃×24h):

[0093] Tensile strength change rate / % -12

[0094] Change rate of elongation at break / % +15

[0095] Ozone crack resistance time (ozone concentration 100pphm) > 120h

[0096] The preparation process of the above-mentioned embodiments is the same, according to the ratio of raw materials, the mixed rubber is...

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Abstract

The invention discloses a high performance rubber sheath rubber material, which comprises the following raw materials by weight part: 30-60 of ethylene propylene diene monomer rubber, 30-70 of nitrile rubber, 25-60 of a reinforcing filler, 5-10 of active agents, 3-5 of anti-aging agents, 0.5-10 of a vulcanizing agent, 0.5-3 of a promoter and 5-20 of plasticizers. The raw materials are subjected to mixing by an open mill and an internal mixer to produce a mixed rubber compound, which is then prepared into a semi-finished product extruder extrusion. The rubber material not only has good ozone resistance and weathering aging resistance, but also has excellent oil resistance and bonding performance. And under the premise of satisfying comprehensive performance, the service life of the rubber material is further improved.

Description

technical field [0001] The invention relates to rubber materials, in particular to a high-performance rubber sheath compound. Background technique [0002] At present, most of the rubber sheath materials used in industry or daily use generally expose a series of problems such as easy aging, cracking, low bond strength, oil resistance, and short life, which affect the use of rubber sheaths. Ethylenepropylene diene monomer (EPDM) is a highly saturated rubber with excellent ozone resistance, weather resistance, temperature resistance and electrical insulation, but its oil resistance, bonding performance and wear resistance are poor. Nitrile rubber is a kind of highly unsaturated rubber, which has the advantages of oil resistance, wear resistance, good adhesion and small compression set, but it is poor in ozone resistance and weather aging resistance. If these two rubbers are used together under appropriate conditions and can be co-vulcanized, the resulting blended rubber will ...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L23/16C08L91/06C08K13/02C08K3/04C08K3/22C08K5/00C08K5/09C08K5/18C08K5/3437C08K5/12H01B3/28H01B7/17
Inventor 周胜
Owner 中国化工集团曙光橡胶工业研究设计院有限公司
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