High-pressure-resistant sealing material

Abstract

The invention provides a high-pressure-resistant sealing material, which is prepared from the following ingredients in parts by mass: 80 to 90 parts of hydrogenated butadiene-acrylonitrile rubber, 15 to 20 parts of fluororubber, 8 to 10 parts of diacetyl peroxide, 3 to 5 parts of stearic acid, 1 to 2 parts of propenol, 2 to 3 parts of methyl hydrogen silicone oil, 1 to 2 parts of paraffin, 1 to 2 parts of oleic diethanolamide borate, 0.8 to 1.2 parts of light calcium carbonate, 1 to 2 parts of zinc oxide, 3 to 6 parts of aluminum oxide, 6 to 8 parts of white carbon black, 0.5 to 2 parts of anti-aging agents and 1 to 3 parts of sulphur. The sealing material provided by the invention has the advantages that the friction coefficient is low (0.21 to 0.23); the service life is long (the service life is 130 to 150 days) under the work conditions of high temperature (the sealing material can work in an occasion being 215 DEG C) and high pressure (the sealing material can bear the pressure being 260MPa).

Description

technical field

[0001] The invention relates to a high-pressure resistant sealing material. 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-pressure environment. Contents of the...

Examples

Embodiment 1

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

[0012] Hydrogenated nitrile rubber 85kg, fluorine rubber 18kg, diacetyl peroxide 9kg, stearic acid 4kg, allyl alcohol 1.5kg, methyl hydrogen silicone oil 2.5kg, paraffin 1.5kg, oleic acid diethanolamine borate 1.5kg, light Calcium carbonate 1kg, zinc oxide 1.5kg, aluminum oxide 5kg, white carbon black 7kg, antioxidant 1.5kg, sulfur 2kg.

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

[0014] The hydrogenated nitrile butadiene rubber and fluororubber in the formulation amount are thinly passed separately, mixed 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, the vulcanization time to 30 minutes, and the vulcanization press...

Embodiment 2

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

[0017] Hydrogenated nitrile rubber 80kg, fluorine rubber 15kg, diacetyl peroxide 10kg, stearic acid 5kg, allyl alcohol 2kg, methyl hydrogen silicone oil 3kg, paraffin 1kg, oleic acid diethanolamine borate 1kg, light calcium carbonate 1.2 kg, zinc oxide 2kg, aluminum oxide 6kg, white carbon black 8kg, antioxidant 0.5kg, sulfur 1kg.

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

[0019] The hydrogenated nitrile butadiene rubber and fluororubber in the formulation amount are thinly passed separately, mixed 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 time to 35 minutes, and the vulcanization pressure to...

Embodiment 3

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

[0022] Hydrogenated nitrile rubber 90kg, fluorine rubber 20kg, diacetyl peroxide 8kg, stearic acid 3kg, allyl alcohol 1kg, methyl hydrogen silicone oil 2kg, paraffin 2kg, oleic acid diethanolamine borate 2kg, light calcium carbonate 0.8 kg, zinc oxide 1kg, aluminum oxide 3kg, white carbon black 6kg, antioxidant 2kg, sulfur 3kg.

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

[0024] The hydrogenated nitrile butadiene rubber and fluororubber in the formulation amount are thinly passed separately, mixed 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 180°C, the vulcanization time to 25 minutes, and the vulcanization pressure to 8M...

technical field

[0001] The invention relates to a high-pressure resistant sealing material. 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-pressure environment. Contents of the...

Examples

Embodiment 1

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

[0012] Hydrogenated nitrile rubber 85kg, fluorine rubber 18kg, diacetyl peroxide 9kg, stearic acid 4kg, allyl alcohol 1.5kg, methyl hydrogen silicone oil 2.5kg, paraffin 1.5kg, oleic acid diethanolamine borate 1.5kg, light Calcium carbonate 1kg, zinc oxide 1.5kg, aluminum oxide 5kg, white carbon black 7kg, antioxidant 1.5kg, sulfur 2kg.

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

[0014] The hydrogenated nitrile butadiene rubber and fluororubber in the formulation amount are thinly passed separately, mixed 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, the vulcanization time to 30 minutes, and the vulcanization press...

Embodiment 2

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

[0017] Hydrogenated nitrile rubber 80kg, fluorine rubber 15kg, diacetyl peroxide 10kg, stearic acid 5kg, allyl alcohol 2kg, methyl hydrogen silicone oil 3kg, paraffin 1kg, oleic acid diethanolamine borate 1kg, light calcium carbonate 1.2 kg, zinc oxide 2kg, aluminum oxide 6kg, white carbon black 8kg, antioxidant 0.5kg, sulfur 1kg.

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

[0019] The hydrogenated nitrile butadiene rubber and fluororubber in the formulation amount are thinly passed separately, mixed 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 time to 35 minutes, and the vulcanization pressure to...

Embodiment 3

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

[0022] Hydrogenated nitrile rubber 90kg, fluorine rubber 20kg, diacetyl peroxide 8kg, stearic acid 3kg, allyl alcohol 1kg, methyl hydrogen silicone oil 2kg, paraffin 2kg, oleic acid diethanolamine borate 2kg, light calcium carbonate 0.8 kg, zinc oxide 1kg, aluminum oxide 3kg, white carbon black 6kg, antioxidant 2kg, sulfur 3kg.

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

[0024] The hydrogenated nitrile butadiene rubber and fluororubber in the formulation amount are thinly passed separately, mixed 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 180°C, the vulcanization time to 25 minutes, and the vulcanization pressure to 8M...