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Fluorine rubber material for high temperature and high pressure resistant seals and preparation method thereof

A technology of high-pressure sealing and fluororubber, which is applied in the field of fluororubber materials for high-temperature and high-pressure resistant seals and its preparation, and can solve the problems of high hardness, high tensile strength, high resistance to shear deformation, explosion-proof, and inability to tolerate complex media. and other problems, to achieve excellent anti-gas rapid pressure release performance, improve hardness, and reasonable formula

Active Publication Date: 2019-07-19
SHANGHAI REAL SEALING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these prior art composite rubber materials cannot meet the requirements of high hardness, high tensile strength, high resistance to shear deformation, explosion-proof (ED, Explosive Decompression) or Resistance to rapid gas decompression (RGD, Rapid Gas Decompression), and rubber material resistance to extrusion deformation (ER, Extrusion Resistance) and other performance requirements, the present invention has undergone repeated comparisons and screenings, and the peroxide vulcanization system fluororubber polymer and carbon nanometer tubes, and combined with auxiliary materials to prepare fluororubber materials for high-temperature and high-pressure seals, but it was initially found that adding carbon nanotubes to fluororubber polymers, not all composite rubber materials have high hardness under high temperature and high pressure environments. High tensile strength and high elongation, even once gave up the initial efforts to prepare fluororubber materials for high temperature and high pressure seals,

Method used

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  • Fluorine rubber material for high temperature and high pressure resistant seals and preparation method thereof
  • Fluorine rubber material for high temperature and high pressure resistant seals and preparation method thereof
  • Fluorine rubber material for high temperature and high pressure resistant seals and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The formula of embodiment 1 peroxygen vulcanized fluorine rubber material

[0026] Table 1 shows the formulations of No. 1 to No. 4 peroxyvulcanized fluororubber materials. For detailed ratios, refer to the ratio of each component in the table.

[0027] Table 1 Formulas of No. 1 to No. 4 peroxyvulcanized fluororubber materials

[0028] serial number number 1 number 2 number 3 No 4 Viton GF 100.00 100.00 100.00 100.00 carbon nanotube GTR 0.00 5.00 10.00 15.00 Accelerator TAIC-S70 4.00 4.00 4.00 4.00 Cross-linking agent 101XL-45 1.50 1.50 1.50 1.50 Zinc oxide META-Z102 3.00 3.00 3.00 3.00 Carbon black N 990 30.00 25.00 20.00 15.00 Processing aid Struktol HT 290 1.00 1.00 1.00 1.00 total number of copies 139.50 139.50 139.50 139.50

Embodiment 2

[0029] The performance test of embodiment 2 peroxygen vulcanized fluorine rubber material

[0030] Weigh each component according to the ratio of No. 1 to No. 4 formulas (parts by weight) in Example 1, wrap the peroxysulfurized fluororubber on a double-roller rolling machine, and carbon nanotubes, crosslinking agents, accelerators, Auxiliary materials such as acid absorbing agent zinc oxide, carbon black and processing aids are added to the open mill and mixed with fluororubber, and the roller temperature is lower than 80°C, and the mixture is evenly mixed and flakes are produced to obtain fluororubber compound. The mixed rubber was molded and vulcanized into a standard rubber test piece under the condition of 10 minutes of one-stage vulcanization at a temperature of 180°C, and then second-stage vulcanization at a temperature of 200°C for 12 hours, and the rubber test piece was prepared according to a standard test sample and tested. Test, the performance parameters of No. 1-4...

Embodiment 3

[0040] The formula of embodiment 3 peroxygen vulcanized fluororubber materials

[0041] Table 3 shows the formulations of No. 5 to No. 8 peroxyvulcanized fluororubber materials. For detailed ratios, refer to the ratio of each component in the table.

[0042] Table 3 Formulas of No. 5 to No. 8 peroxyvulcanized fluororubbers

[0043]

[0044]

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Abstract

The invention relates to polymer rubber composite materials and discloses a fluororubber material used for sealing members resistant to high temperatures and high pressure and a preparing method thereof. A small amount of carbon nanotubes is added into a fluororubber polymer, and a filler and a vulcanization system are reasonably optimized. The fluororubber material is prepared from 100 parts by weight of peroxide-vulcanization-system fluororubber polymer, 1-15 parts by weight of the carbon nanotubes, 1-3 parts by weight of a crosslinking agent, 1-6 parts by weight of a promoter, 0-5 parts by weight of an acid absorbing agent, 5-40 parts by weight of a filler and 0-2 parts by weight of a processing auxiliary agent. According to the fluororubber material and the method, the formula is reasonable, a process is simple, and sealing and pressure bearing effects of down-hole tools, valves and valve seats at a high temperature under high pressure are greatly improved.

Description

technical field [0001] The invention relates to polymer rubber composite materials, in particular to a fluororubber material for high temperature and high pressure resistant sealing parts and a preparation method thereof. Background technique [0002] As the depth of oil and gas drilling increases gradually, the composition and pressure of oil and gas become more complex. Therefore, equipment related to oil and gas drilling, transmission and processing technology puts forward higher requirements for related rubber sealing material technology. Under the condition of high temperature, high pressure and strong corrosion, in addition to the resistance to complex media, rubber materials have proposed high hardness, high tensile strength, high resistance to shear deformation, explosion-proof (ED, Explosive Decompression) or resistance to gas rapid decompression ( RGD, Rapid GasDecompression), and rubber material extrusion resistance (ER, Extrusion Resistance) and other performance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/16C08K13/04C08K7/24C08K3/22C08K3/04
CPCC08K3/04C08K3/22C08K7/24C08K13/04C08K2003/2296C08K2201/011C08K2201/014C08L27/16C08L2201/08C08L91/06
Inventor 李恩军苟文亮
Owner SHANGHAI REAL SEALING TECH CO LTD
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