Rubber sealing member

A technology of rubber seals and rubber raw materials, applied in the field of rubber seals and seals, can solve the problems of affecting the service life of seals, poor high temperature resistance, poor wear resistance, etc., to improve the service life and increase the compressive strength. , The effect of improving wear resistance

Active Publication Date: 2013-09-25
镇江春环密封件集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the lubricating system of mechanical equipment contains acid and alkali components, it is easy to penetrate into the seals, which will cause the expansion of the seals and affect the service life of the seals; in addition, due to the harsh use environment, such as high temperature, etc., thus, damage the seal
[0003] In order to solve the above technical problems, Chinese patent literature discloses a rubber seal, the patent name is "high acid and alkali resistant rubber seal", the patent number is "CN201210502753.3", the rubber raw material ratio of the rubber seal is selected as 120-140 parts of 4045 type ethylene propylene rubber, 4-6 parts of zinc oxide, 8-10 parts of magnesium oxide, 4-6 parts of black ointment, 45-60 parts of spray carbon black, 70-90 parts of decaned octyl ester, Add 0.9-1.1 parts of TT and 1-1.4 parts of anti-aging agent. Although the rubber seal has certain corrosion resistance, its wear resistance is poor, and its high temperature resistance is poor. When used, it is easy to be worn

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A rubber seal, composed of 80 parts of rubber raw materials, 15 parts of polytetrafluoroethylene, 10 parts of zinc oxide, 60 parts of ceramic micropowder, 15 parts of silicon powder, 10 parts of manganese powder, and 3 parts of vulcanizing agent, calculated in parts by weight First, nitrile rubber, fluororubber, styrene-butadiene rubber and polyimide resin are masticated for 15 to 30 minutes to form rubber raw materials, nitrile rubber: fluororubber: styrene-butadiene rubber: polyimide resin is 2:3:2 : 1.5, weight ratio, until the plasticity test meets the process requirements, add 60 parts of ceramic micropowder, 15 parts of silicon powder, and 10 parts of manganese powder in turn until fully mixed, then add 3 parts of vulcanizing agent, and mix thoroughly , the final film. The rubber seal prepared by the formula has medium resistance and can still work under high temperature environment, and has good elasticity. The vulcanizing agent is composed of 5 parts of No. 3 v...

Embodiment 2

[0022] A rubber seal, consisting of 90 parts of rubber raw materials, 20 parts of polytetrafluoroethylene, 13 parts of zinc oxide, 70 parts of ceramic micropowder, 18 parts of silicon powder, 10 parts of manganese powder, and 4 parts of vulcanizing agent, calculated in parts by weight First, nitrile rubber, fluororubber, styrene-butadiene rubber and polyimide resin are masticated for 15 to 30 minutes to form rubber raw materials, nitrile rubber: fluororubber: styrene-butadiene rubber: polyimide resin is 2:3:2 : 1.5, weight ratio, until the plasticity test meets the process requirements, add 70 parts of ceramic micropowder, 18 parts of silicon powder, and 10 parts of manganese powder in turn until fully mixed, then add 4 parts of vulcanizing agent, and mix thoroughly , the final film. The rubber seal prepared by the formula has medium resistance and can still work under high temperature environment, and has good elasticity. The vulcanizing agent is composed of 5 parts of No. 3...

Embodiment 3

[0025] A rubber seal, consisting of 100 parts of rubber raw material, 30 parts of polytetrafluoroethylene, 15 parts of zinc oxide, 80 parts of ceramic micropowder, 25 parts of silicon powder, 12 parts of manganese powder, and 6 parts of vulcanizing agent, calculated in parts by weight First, nitrile rubber, fluororubber, styrene-butadiene rubber and polyimide resin are masticated for 15 to 30 minutes to form rubber raw materials, nitrile rubber: fluororubber: styrene-butadiene rubber: polyimide resin is 2:3:2 : 1.5, weight ratio, until the plasticity test meets the process requirements, add 80 parts of ceramic micropowder, 25 parts of silicon powder, and 12 parts of manganese powder in turn until fully mixed, then add 6 parts of vulcanizing agent, and mix thoroughly , the final film. The rubber seal prepared by the formula has medium resistance and can still work under high temperature environment, and has good elasticity. The vulcanizing agent is composed of 5 parts of No. 3...

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Abstract

The invention discloses a rubber sealing member, which is composed of a rubber raw material, polytetrafluoroethylene, zinc oxide, ceramic micro-powder, silicon powder, manganese powder and a vulcanizing agent, wherein the rubber raw material is composed of nitrile rubber buna, fluorubber, butadiene styrene rubber and polyimide resin. By synergism among components, volume density of the rubber sealing member is greatly raised, gaps between rubber molecules are reduced, and wear resistance and intensity of the rubber sealing member are raised. Physical properties, chemical properties and usage properties are all substantially raised, and temperature toleration can reach 450 DEG C, thereby greatly prolonging long service life of the rubber sealing member. The ceramic micro-powder, the silicon powder and the manganese powder are used as filling materials, which greatly raises rubber wear resistance; and the improved vulcanizing agent greatly raises rubber fluidity, and increases high temperature resistance and stability.

Description

technical field [0001] The invention relates to a seal, in particular to a rubber seal, which belongs to the technical field of sealing materials. Background technique [0002] Rubber seals are a general basic component in sealing devices Rubber seals are a type of rubber products widely used in sealing technology. Because of its very small elastic modulus, high elongation, and air resistance, it is widely used for installation on various mechanical equipment. Because the lubricating system of mechanical equipment contains acid and alkali components, it is easy to penetrate into the seal, thereby causing the expansion of the seal and affecting the service life of the seal; in addition, due to the harsh operating environment, such as high temperature, etc., thus, damage the seal. [0003] In order to solve the above technical problems, Chinese patent literature discloses a rubber seal, the patent name is "high acid and alkali resistant rubber seal", the patent number is "CN...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L9/02C08L9/06C08L79/08C08L27/18C08K13/02C08K3/22C08K3/34C08K3/08C08K3/02
Inventor 刘晓芳
Owner 镇江春环密封件集团有限公司
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