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High-pressure-resistant sealing material and preparation method thereof

A sealing material and high-pressure-resistant technology, which is applied in the field of high-pressure-resistant sealing materials and its preparation, can solve problems such as serious accidents, troubles in continuous production of enterprises, damage to seals, etc., and achieve the effect of low friction coefficient

Inactive Publication Date: 2016-01-13
WUXI HEBANG METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the quality of the seal is poor, it will cause loss and trouble if it is light, and it will cause serious accidents if it is serious
Especially in an environment with high working pressure, the seal ring bears a large load, and the seals are often damaged during the operation of the equipment. Some seals can only be used for 1-2 months, or even a shorter time , it needs to be replaced, which brings troubles to the continuous production of the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The formula of high pressure resistant sealing material of the present invention is:

[0012] 90kg of hydrogenated nitrile rubber, 18kg of natural rubber, 6kg of diacetyl peroxide, 1.5kg of octyltin maleate, 6kg of stearic acid, 1.5kg of allyl alcohol, 6kg of dry oil alkyd resin, 5kg of methyl hydrogen silicone oil, Ethylene glycol 2.5kg, paraffin 1.5kg, diethanolamine borate 1.5kg, calcium carbonate 1kg, alumina 4kg, white carbon black 4kg, antioxidant 1.2kg, sulfur 2kg.

[0013] The preparation method of high pressure resistant sealing material of the present invention is:

[0014] The hydrogenated nitrile butadiene rubber and natural rubber in the prescribed amount are thinly passed separately and then mixed evenly and added to the open mill, and then the remaining components are added to the open mill for mixing until uniform, and then the sheet is produced to obtain the mixed rubber. Carry out one-stage vulcanization, control the vulcanization temperature to 170°C...

Embodiment 2

[0016] The formula of high pressure resistant sealing material of the present invention is:

[0017] Hydrogenated nitrile rubber 95kg, natural rubber 15kg, diacetyl peroxide 5kg, octyltin maleate 1kg, stearic acid 8kg, allyl alcohol 2kg, drying oil alkyd resin 5kg, methyl hydrogen silicone oil 6kg, ethylene glycol Alcohol 2kg, paraffin 2kg, diethanolamine borate 1kg, calcium carbonate 1.2kg, alumina 3kg, white carbon black 5kg, antioxidant 0.5kg, sulfur 3kg.

[0018] The preparation method of high pressure resistant sealing material of the present invention is:

[0019] The hydrogenated nitrile butadiene rubber and natural rubber in the prescribed amount are thinly passed separately and then mixed evenly and added to the open mill, and then the remaining components are added to the open mill for mixing until uniform, and then the sheet is produced to obtain the mixed rubber. Carry out one-stage vulcanization, control the vulcanization temperature to 160°C, the vulcanization t...

Embodiment 3

[0021] The formula of high pressure resistant sealing material of the present invention is:

[0022] Hydrogenated nitrile rubber 85kg, natural rubber 20kg, diacetyl peroxide 8kg, octyltin maleate 2kg, stearic acid 5kg, allyl alcohol 1kg, drying oil alkyd resin 8kg, methyl hydrogen silicone oil 4kg, ethylene glycol Alcohol 3kg, paraffin 1kg, diethanolamine borate 2kg, calcium carbonate 0.8kg, aluminum oxide 6kg, white carbon black 3kg, antioxidant 2kg, sulfur 1kg.

[0023] The preparation method of high pressure resistant sealing material of the present invention is:

[0024] The hydrogenated nitrile butadiene rubber and natural rubber in the formula amount are respectively thinned and mixed into the open mill, and then the rest of the components are added into the open mill for mixing until uniform, and then the sheet is obtained to obtain the mixed rubber. Carry out one-stage vulcanization, control the vulcanization temperature to 180°C, the vulcanization time to 20 minutes,...

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PUM

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Abstract

The invention provides a high-pressure-resistant sealing material prepared with the components of, by mass, 85-95 parts of hydrogenated nitrile rubber, 15-20 parts of natural rubber, 5-8 parts of diacetyl peroxide, 1-2 parts of octyltin maleate, 5-8 parts of stearic acid, 1-2 parts of allyl alcohol, 5-8 parts of drying oil alkyd resin, 4-6 parts of methyl hydrogen silicone oil, 2-3 parts of ethylene glycol, 1-2 parts of paraffin, 1-2 parts of diethanolamine borate, 0.8-1.2 parts of calcium carbonate, 3-6 parts of alumina, 3-5 parts of white carbon black, 0.5-2 parts of an anti-aging agent, and 1-3 parts of sulfur. The invention also provides a preparation method of the material. The sealing material provided by the invention has low friction coefficient (0.21-0.23), and has a long service life (110-130 days) under working conditions with high temperature (210 DEG C) and high pressure (280MPa).

Description

technical field [0001] The invention relates to a high-pressure resistant sealing material and a preparation method thereof. Background technique [0002] Sealing products are important basic components of all kinds of machinery, and almost all industrial sectors cannot do without it. The quality of the sealing element is directly related to the service life and operational reliability of the machine. If the quality of the seals is poor, it will cause loss and trouble if it is light, and it will cause serious accidents if it is serious. Especially in an environment with high working pressure, the seal ring bears a large load, and the seals are often damaged during the operation of the equipment. Some seals can only be used for 1-2 months, or even a shorter time , it needs to be replaced, which brings troubles to the continuous production of the enterprise. Therefore, there is an urgent need for a sealing material that can be used for a long period of time in a high-pressu...

Claims

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Application Information

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IPC IPC(8): C08L15/00C08L7/00C08L67/08C08L83/05C08L91/06C08K13/02C08K5/14C08K5/09C08K5/053C08K3/26C08K3/22C08K3/36C08K3/06B29C35/02
Inventor 邓义增
Owner WUXI HEBANG METAL PROD
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