Low temperature resistant nitrile rubber and preparation method thereof

A technology of nitrile rubber and low temperature resistance, which is applied in the field of organic polymer compounds, which can solve the problems of restricting the use of nitrile rubber and poor cold resistance, and achieve the effects of improving low temperature resistance, ensuring uniformity, and meeting the sealing effect

Inactive Publication Date: 2019-08-23
河北旭龙液压密封件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat resistance, air tightness, wear resistance and water resistance of nitrile rubber are good, but the cold resistance is poor. Generally, the lowest use temperature of nitrile rubber is -30°C, which makes nitrile rubber not effective at low temperature. Play a corresponding sealing role, limiting the use of nitrile rubber

Method used

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  • Low temperature resistant nitrile rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of low-temperature resistant nitrile rubber, prepared from the following formula by weight: 100 parts of nitrile rubber 1865, 40 parts of natural gas semi-reinforced carbon black, 40 parts of high wear-resistant carbon black N330, 1.5 parts of peroxide diiso Propylbenzene, 6 parts of indirect zinc oxide, 1 part of stearic acid, 0.25 parts of sulfur, 1.2 parts of dibenzothiazole dithio, 0.2 parts of tetramethylthiuram disulfide, 20 parts of plasticizer TP-90, 1 part of anti-aging agent N-isopropyl-N'-phenyl-p-phenylenediamine, 1 part of anti-aging agent 2,2,4-trimethyl-1,2-dihydroquinoline polymer.

[0018] The present invention also discloses a preparation method based on the above-mentioned low-temperature resistant nitrile rubber, comprising the following steps,

[0019] Step S1: After the nitrile rubber is kept at a constant temperature of 35-45°C, it is masticated on an open mill.

[0020] Step S2: Add other formula components into the open mill, knead evenl...

Embodiment 2

[0023] This embodiment is prepared from the following formula by weight: 100 parts of nitrile rubber, 50 parts of natural gas semi-reinforced carbon black, 30 parts of high wear-resistant carbon black, 1.7 parts of dicumyl peroxide, 5 parts of indirect method Zinc oxide, 1.2 parts of stearic acid, 0.3 parts of sulfur, 1.2 parts of dithiodibenzothiazole, 0.25 parts of tetramethylthiuram disulfide, 23 parts of plasticizer, 2 parts of anti-aging agent N-isopropyl- N'-phenyl-p-phenylenediamine, 1 part anti-aging agent 2,2,4-trimethyl-1,2-dihydroquinoline polymer. The preparation method is the same as that of Example 1, and will not be repeated here.

Embodiment 3

[0025] This embodiment is prepared from the following formula by weight: 100 parts of nitrile rubber, 55 parts of natural gas semi-reinforced carbon black, 35 parts of high wear-resistant carbon black, 1.75 parts of peroxide Dicumylbenzene, 4.5 parts of indirect zinc oxide, 1 part of stearic acid, 0.35 parts of sulfur, 1.2 parts of dithiodibenzothiazole, 0.1 part of tetramethylthiuram disulfide, 22 parts of plasticizer, 1.5 parts of antiaging agent N-isopropyl-N'-phenyl-p-phenylenediamine, and 1 part of antiaging agent 2,2,4-trimethyl-1,2-dihydroquinoline polymer. The preparation method is the same as that of Example 1, and will not be repeated here.

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Abstract

The invention discloses low temperature resistant nitrile rubber which is characterized by being prepared from the following formulae in parts by weight: 100 parts of nitrile rubber, 40-55 parts of natural gas semi-reinforced carbon black, 20-40 parts of high wearing resistant carbon black, 1.5-2 parts of peroxide diisopropylbenzene, 4-6 parts of indirect-method zinc oxide, 0.5-1.5 parts of stearic acid, 0.2-0.5 part of sulfur, 0.5-1.5 parts of dibenzothiazole disulfide, 0.2-0.3 part of tetramethyl thiuram disulfide, 18-25 parts of a plasticizer, 1-2 parts of an anti-aging agent N-isopropyl-N-phenyl p-phenylenediamine, 1-2 parts of an anti-aging agent, namely a 2,2,4-trimethyl-1,2-dihydroquinoline polymer. By adopting the low temperature resistant nitrile rubber consipuncture of the components, and the preparation method, the low temperature resistance of the nitrile rubber can be improved, the nitrile rubber is not damaged at minus 65 DEG C, and a continuous and effective sealing function of a rubber product at a low temperature can be met.

Description

technical field [0001] The invention relates to the field of organic polymer compounds, in particular to a low-temperature resistant nitrile rubber and a preparation method. Background technique [0002] Nitrile rubber is characterized by excellent resistance to gasoline and aliphatic hydrocarbon oils, second only to polysulfide rubber, acrylic ester and fluororubber, and better than other general-purpose rubbers. The heat resistance, air tightness, wear resistance and water resistance of nitrile rubber are good, but the cold resistance is poor. Generally, the lowest use temperature of nitrile rubber is -30 ℃, so that nitrile rubber cannot be effective at low temperature. Play a corresponding sealing role, limiting the use of nitrile rubber. Contents of the invention [0003] The object of the present invention is to provide a low-temperature resistant nitrile rubber and a preparation method, which improves the low-temperature resistance of the nitrile rubber, can reach m...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/02C08K3/04C08K3/22C08K5/09C08K5/47
CPCC08K3/04C08K3/22C08K5/09C08K5/47C08K13/02C08K2201/014C08L9/02
Inventor 王靖
Owner 河北旭龙液压密封件有限公司
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