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High-strength high-modulus fluororubber composition as well as preparation method and application thereof

A technology of fluororubber and high modulus, which is applied in the field of high-strength and high-modulus fluororubber composition and its preparation, and can solve problems such as poor sealing and pressure bearing effects

Active Publication Date: 2020-10-30
SHANGHAI REAL SEALING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of poor sealing and pressure bearing effects when the fluororubber material under high temperature and high pressure is used as a seal in the prior art, the present invention provides a high-strength and high-modulus fluororubber composition and its preparation method and application

Method used

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  • High-strength high-modulus fluororubber composition as well as preparation method and application thereof
  • High-strength high-modulus fluororubber composition as well as preparation method and application thereof
  • High-strength high-modulus fluororubber composition as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, the formula of fluororubber composition

[0027] Table 1 shows the formulations of No. 1-8 fluororubber compositions. For detailed proportions, please refer to the weight ratio of each component in Table 1.

[0028] Table 1, the formula of No. 1-8 fluororubber composition

[0029] number 1 number 2 number 3 No 4 Number 5 number 6 Number 7 number 8 Fluorine rubber Viton AHV 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 Calcium Hydroxide NICC5000 6.00 6.00 6.00 6.00 6.00 6.00 6.00 6.00 Magnesium Oxide MA150 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 Crosslinking agent bisphenol AF50 3.20 3.20 3.20 3.20 3.20 3.20 3.20 3.20 Accelerator BP33 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20 Graphene SE-A 2.00 5.00 10.00 Graphene SE-B 2.00 5.00 Graphene SE-C 2.00 5.00 Carbon black N990 20.00 20.00 20.00 20.00 20....

Embodiment 2

[0034] Embodiment 2, performance test of fluororubber composition

[0035] Weigh each component according to the weight and number ratio of each component of the No. 1-8 fluororubber composition formula in Table 1, wrap the fluororubber on a double-roll mill, and wrap graphene, crosslinking agent, accelerator Auxiliary materials such as agent, acid absorbing agent, carbon black and processing aids are added to the open mill and mixed with fluororubber, and the left and right sides of the rubber mixture are cut 5-10 times each, and the roller distance of the open mill is adjusted to the minimum. Or make a triangular bag 10 times, the whole mixing time is controlled between 15-20 minutes, and the roller temperature is lower than 80°C, and the mixture is uniformly mixed and the sheet is produced to obtain a fluorine rubber compound. The mixed rubber was molded and vulcanized into a standard rubber test piece at a temperature of 180°C for 10 minutes under the condition of one-stag...

Embodiment 3

[0051] Embodiment 3, the prescription of fluororubber composition

[0052] Table 3 shows the formulations of No. 9 to No. 17 fluororubber compositions. For detailed proportions, refer to the weight ratio of each component in Table 3.

[0053] Formulation of No. 9-17 fluororubber composition of table 3.

[0054] Among them, in Table 3,

[0055] Graphene XF-A is graphene prepared by physical method-liquid phase exfoliation, black powder, thickness 1-5nm, sheet diameter 1-6um, carbon content > 99%, electrical conductivity 550-1100S / cm, bulk density 0.04 -0.07g / cm 3 , tap density 0.06-0.10g / cm 3 ;

[0056] Graphene SE-A, graphene SE-B are identical with embodiment 1.

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Abstract

The invention discloses a high-strength high-modulus fluororubber composition as well as a preparation method and application thereof. The high-strength and high-modulus fluororubber composition is prepared from the following raw and auxiliary materials in parts by weight: 100 parts of a fluororubber polymer, 1-8 parts of graphene, 1-5 parts of a cross-linking agent, 1-5 parts of an accelerant, 0-15 parts of an acid acceptor, 5-43 parts of a filler and 0-3 parts of a processing aid. A small amount of graphene with a specific structure is added into the fluororubber polymer, so that the hardness, the definite elongation strength, the extrusion deformation resistance and the shearing resistance of the fluororubber composite material are greatly improved, and meanwhile, the material has excellent gas rapid pressure release resistance; the high-strength and high-modulus fluororubber composition is reasonable in formula and simple in process, is used for manufacturing high-temperature-resistant and high-pressure-resistant anti-extrusion sealing pieces, and greatly improves the sealing and pressure-bearing effects of downhole tools and valve seats at high temperature and high pressure.

Description

technical field [0001] The invention relates to the technical field of polymer rubber composite materials, in particular to a high-strength and high-modulus fluororubber composition and its preparation method and application. 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 conditions 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 or resistance to rapid gas pressure loss, and rubber materials anti-extrusion Deformation and other performance requirements. [0003] In the process of oil and gas pipeline transportati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08K3/22C08K5/136C08K3/04C08K5/14C08K13/02C09K3/10
CPCC08K3/22C08K5/136C08K3/042C08K3/04C08K5/14C08K13/02C09K3/10C08K2003/2206C08K2003/222C08L2201/08C09K2003/1078C08L27/16
Inventor 李恩军苟文亮李耿褚斌斌
Owner SHANGHAI REAL SEALING TECH CO LTD
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