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Low-pressure-variation ethylene-propylene rubber mixed compound and mixing method

A technology for ethylene-propylene rubber raw rubber and ethylene-propylene rubber, which is applied in the field of rubber mixing and mixing, can solve the problems of large pressure change and cannot fully meet the requirements of working conditions, and achieves low pressure change and meets the requirements of working conditions. Effect

Inactive Publication Date: 2013-01-16
QINGDAO TKS SEALING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of the existing ethylene-propylene rubber compound is that the pressure change is relatively large under the standard temperature and time, which cannot fully meet the requirements of the working conditions

Method used

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  • Low-pressure-variation ethylene-propylene rubber mixed compound and mixing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A low-pressure variable ethylene-propylene rubber compound comprising the following raw materials in parts by weight:

[0025]

[0026] The anti-aging agent is anti-aging agent AW;

[0027] The accelerator is the accelerator TAIC.

[0028] The mixing method of above-mentioned a kind of low pressure variable ethylene propylene rubber compounded rubber, comprises the steps:

[0029] 1) Put 100 parts of EPDM raw rubber into the kneader for mastication;

[0030] 2) Put 4 parts of zinc oxide, 40 parts of carbon black, 15 parts of white carbon black, 1.5 parts of antioxidant and 0.4 parts of polyethylene wax into the kneader and knead for 3 minutes;

[0031] 3) Put 20 parts of paraffin oil into the kneader;

[0032] 4) When the temperature of the kneader reaches ≤135°C, discharge the rubber material, and cool down in the lower part of the open mill;

[0033] 5) After the rubber material is cooled and parked, put the rubber material into the kneader, add 2 parts of DCP ...

Embodiment 2

[0036] A low-pressure variable ethylene-propylene rubber compound comprising the following raw materials in parts by weight:

[0037]

[0038] The anti-aging agent is anti-aging agent RD.

[0039] The accelerator is the co-bridging agent TRIM / S.

[0040] The mixing method of above-mentioned a kind of low pressure variable ethylene propylene rubber compounded rubber, comprises the steps:

[0041] 1) Put 100 parts of EPDM raw rubber into the kneader for mastication;

[0042] 2) Put 5 parts of zinc oxide, 60 parts of carbon black, 25 parts of white carbon black, 5 parts of anti-aging agent, 2 parts of polyethylene wax into the kneader and knead for 5 minutes;

[0043] 3) Put 50 parts of paraffin oil into the kneader;

[0044] 4) When the temperature of the kneader reaches ≤135 degrees, discharge the rubber material, and cool down in the lower part of the mill;

[0045] 5) After the rubber material is cooled and parked, put the rubber material into the kneader, add 5 parts ...

Embodiment 3

[0048] A low-pressure variable ethylene-propylene rubber compound comprising the following raw materials in parts by weight:

[0049]

[0050] The anti-aging agent is anti-aging agent 4010;

[0051] The accelerator is the accelerator TAIC.

[0052] The mixing method of above-mentioned a kind of low pressure variable ethylene propylene rubber compounded rubber, comprises the steps:

[0053] 1) Put 100 parts of EPDM raw rubber into the kneader for mastication;

[0054] 2) Put 5 parts of zinc oxide, 45 parts of carbon black, 15 parts of white carbon black, 2 parts of antioxidant and 3 parts of polyethylene wax into the kneader and knead for 5 minutes;

[0055] 3) Put 30 parts of paraffin oil into the kneader;

[0056] 4) When the temperature of the kneader reaches ≤135 degrees, discharge the rubber material, and cool down in the lower part of the mill;

[0057] 5) After the rubber material is cooled and parked, put the rubber material into the kneader, add 3.3 parts of DCP...

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Abstract

The invention discloses low-pressure-variation ethylene-propylene rubber mixed compound which is made of, by weight, 100 parts of ethylene-propylene-diene-terpolymer rubber, 4-6 parts of zinc oxide, 40-60 parts of carbon black, 15-25 parts of white carbon black, 1.5-5 parts of anti-aging agent, 0.4-2.0 parts of polyethylene wax, 20-50 parts of paraffin oil, 2-5 parts of DCP (dicumyl peroxide) and 0.5-2 parts of accelerant. The low-pressure-variation ethylene-propylene rubber mixed compound is low in pressure variation under standard temperature and time and can completely meet requirements of operating conditions.

Description

technical field [0001] The invention relates to a mixed rubber and a mixing method, in particular to a low-pressure variable ethylene-propylene rubber mixed rubber and a mixing method. Background technique [0002] EPDM rubber is the raw material for making rubber products, that is, semi-finished products. Therefore, the colloidal dispersion quality of the rubber is directly related to the quality of the finished product. At the same time, the viscoelasticity and rheology of the rubber directly affect the calendering and extrusion. And other processing technology. The existing EPDM rubber compound usually has the following raw materials in parts by weight: 150-200 parts of EPDM rubber; 4-6 parts of zinc oxide; 1-2 parts of stearic acid; 1-4 parts of anti-aging agent; 30-80 parts of carbon black; 0.5-2 parts of vulcanizing agent; 3-6 parts of accelerator; 1-4 parts of dispersant. Chinese patent 200910223536.9, titled "Insulation and pressure-resistant type bile mouth sealin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K3/36C08K3/22C08K5/14
Inventor 杨业章
Owner QINGDAO TKS SEALING IND
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