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Rubber composition and preparation method thereof

A technology of rubber composition and nitrile rubber, which is applied in the field of rubber composition of oil-resistant EPDM rubber and nitrile rubber, can solve problems such as ozone cracking, poor oil resistance, and poor ozone resistance, and achieve excellent The effect of oil resistance

Inactive Publication Date: 2013-08-21
WUJIANG DEZUO DAILY CHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated dienes. Its ozone resistance is the best among general-purpose rubbers. Its saturation and heat resistance are also excellent, and its oil resistance is poor. Shortcomings
However, the ozone resistance of nitrile rubber is not good, especially in the case of large stress, its ozone cracking is extremely rapid, and its application is limited to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A rubber composition of oil-resistant EPDM rubber and nitrile rubber, which weighs 105 parts of EPDM rubber, 35 parts of nitrile rubber, 1 part of stearic acid, 1.5 parts of paraffin, anti-aging agent MB 3 parts, 8 parts of titanate coupling agent, 16 parts of calcium carbonate, 1 part of antioxidant, 10 parts of butyl acetate, the raw materials were added to the internal mixer and mixed for 30 minutes, and the mixing temperature was kept at 80°C , processed and shaped to obtain the rubber composition of the present invention.

Embodiment 2

[0015] A rubber composition of oil-resistant EPDM rubber and nitrile rubber, weighing 110 parts of EPDM rubber, 40 parts of nitrile rubber, 0.5 part of stearic acid, 0.02 part of paraffin, anti-aging agent MB 2 parts, 5 parts of titanate coupling agent, 20 parts of calcium carbonate, 0.5 parts of antioxidant, 5 parts of butyl acetate, the raw materials were added to the internal mixer and mixed for 30 minutes, and the mixing temperature was kept at 80°C , processed and shaped to obtain the rubber composition of the present invention.

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PUM

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Abstract

The invention discloses a runner composition. The rubber composition is characterized by being prepared from the following materials in parts by weight: 100-110 parts of ethylene-propylene-diene rubber, 30-40 parts of nitrile rubber, 0.5-1.5 parts of stearic acid, 0.02-2 parts of paraffins, 2-4 parts of anti-ageing agent MB, 5-10 parts of titanate coupling agent, 15-20 parts of calcium carbonate, 0-1.5 parts of antioxidant and 5-10 parts of butyl acetate. The rubber composition, which is prepared by utilizing ethylene-propylene-diene rubber and nitrile rubber, disclosed by the invention has the advantages of being excellent in oil resistance, wear resistance, ozone ageing resistance, low temperature resistance and the like.

Description

[0001] technical field [0002] The invention relates to the field of rubber materials, in particular to a rubber composition of oil-resistant EPDM rubber and nitrile rubber. Background technique [0003] EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated dienes. Its ozone resistance is the best among general-purpose rubbers. Its saturation and heat resistance are also excellent, and its oil resistance is poor. Shortcomings. [0004] Nitrile rubber, also known as butadiene-acrylonitrile rubber, referred to as NBR, has an average molecular weight of 700,000, off-white to light yellow block or powder solid, with excellent oil resistance, good low temperature performance, heat resistance and low price . However, the ozone resistance of nitrile rubber is not good, especially in the case of large stress, its ozone cracking is very fast, and its application is limited. Contents of the invention [0005] The object of the present invention is to provide a r...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L9/02C08K13/02C08K5/09C08K5/01C08K3/26C08K5/101
Inventor 肖伟荣
Owner WUJIANG DEZUO DAILY CHEM PROD
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