CN116535755B - Modified hydrogenated nitrile rubber composition and application thereof in sealing oil injection ring - Google Patents
Modified hydrogenated nitrile rubber composition and application thereof in sealing oil injection ring Download PDFInfo
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- CN116535755B CN116535755B CN202310503939.9A CN202310503939A CN116535755B CN 116535755 B CN116535755 B CN 116535755B CN 202310503939 A CN202310503939 A CN 202310503939A CN 116535755 B CN116535755 B CN 116535755B
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- hydrogenated nitrile
- boron nitride
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- 229920000459 Nitrile rubber Polymers 0.000 title claims abstract description 46
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 title claims abstract description 24
- 238000002347 injection Methods 0.000 title abstract description 11
- 239000007924 injection Substances 0.000 title abstract description 11
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 50
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 44
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 229910052582 BN Inorganic materials 0.000 claims abstract description 25
- 239000006229 carbon black Substances 0.000 claims abstract description 25
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 15
- 239000004014 plasticizer Substances 0.000 claims abstract description 14
- 239000004760 aramid Substances 0.000 claims abstract description 13
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 13
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 10
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000008117 stearic acid Substances 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 239000011593 sulfur Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 30
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 20
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 10
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 8
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical group CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 claims description 7
- 229960000583 acetic acid Drugs 0.000 claims description 6
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 6
- 239000012362 glacial acetic acid Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004246 zinc acetate Substances 0.000 claims description 6
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 5
- ZRMMVODKVLXCBB-UHFFFAOYSA-N 1-n-cyclohexyl-4-n-phenylbenzene-1,4-diamine Chemical compound C1CCCCC1NC(C=C1)=CC=C1NC1=CC=CC=C1 ZRMMVODKVLXCBB-UHFFFAOYSA-N 0.000 claims description 4
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 2
- AXWJKQDGIVWVEW-UHFFFAOYSA-N 2-(dimethylamino)butanedioic acid Chemical compound CN(C)C(C(O)=O)CC(O)=O AXWJKQDGIVWVEW-UHFFFAOYSA-N 0.000 claims description 2
- UJAWGGOCYUPCPS-UHFFFAOYSA-N 4-(2-phenylpropan-2-yl)-n-[4-(2-phenylpropan-2-yl)phenyl]aniline Chemical compound C=1C=C(NC=2C=CC(=CC=2)C(C)(C)C=2C=CC=CC=2)C=CC=1C(C)(C)C1=CC=CC=C1 UJAWGGOCYUPCPS-UHFFFAOYSA-N 0.000 claims description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 11
- 238000002156 mixing Methods 0.000 abstract description 7
- 238000005507 spraying Methods 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 22
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 16
- 239000000243 solution Substances 0.000 description 16
- 238000004073 vulcanization Methods 0.000 description 13
- 238000001035 drying Methods 0.000 description 9
- 239000011787 zinc oxide Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000012065 filter cake Substances 0.000 description 6
- 238000000967 suction filtration Methods 0.000 description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002135 nanosheet Substances 0.000 description 5
- -1 carboxyl modified boron nitride Chemical class 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229920000587 hyperbranched polymer Polymers 0.000 description 3
- 229920002627 poly(phosphazenes) Polymers 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- CCNDOQHYOIISTA-UHFFFAOYSA-N 1,2-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1C(C)(C)OOC(C)(C)C CCNDOQHYOIISTA-UHFFFAOYSA-N 0.000 description 1
- XVMSFILGAMDHEY-UHFFFAOYSA-N 6-(4-aminophenyl)sulfonylpyridin-3-amine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=N1 XVMSFILGAMDHEY-UHFFFAOYSA-N 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
- C08L15/005—Hydrogenated nitrile rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a modified hydrogenated nitrile rubber composition and application thereof in sealing oil injection rings, belonging to the technical field of rubber materials, and comprising the following raw materials in parts by weight: 100 parts of hydrogenated nitrile rubber, 5-10 parts of aramid pulp, 30-40 parts of carbon black, 10-15 parts of boron nitride-based reinforcing agent, 5-10 parts of graphene-based reinforcing agent, 10-15 parts of plasticizer, 0.5-1.5 parts of stearic acid, 1-3 parts of anti-aging agent, 0.1-0.5 part of sulfur, 6-10 parts of vulcanizing agent and 3-5 parts of accelerator; the sealing gasket material for the sealing oil spraying ring has the advantages that a finished product is obtained through mixing and vulcanizing, the heat conductivity coefficient is 3.7-4.4W/(m.K), the oxygen index is 29.8-32.4%, the sealing gasket material has good mechanical strength, high heat conductivity and flame retardance, has high practical value, can endow the sealing gasket with excellent heat dissipation and high temperature resistance, and prolongs the service life and the use safety of the sealing oil spraying ring.
Description
Technical Field
The invention belongs to the technical field of rubber materials, and particularly relates to a modified hydrogenated nitrile rubber composition and application thereof in sealing an oil injection ring.
Background
Along with the increasing demands of applications such as new energy automobiles on motor power density and motor efficiency, the new energy automobile driving motor is required to have higher peak torque and motor efficiency under smaller volume, the demand directly leads to higher working temperature of the new energy automobile driving motor, cooling measures are required to be adopted for cooling, and the existing automobile driving motor cooling system mainly comprises an oil cooling system and a water cooling system, wherein the oil cooling system has better cooling performance than the water cooling system, so that the novel energy automobile driving motor is widely applied to high-power density motor systems. The common motor oil cooling system is mainly formed by combining parts such as a sealed oil spraying ring, an oil pipe, an oil duct and the like, wherein the cooling of the end part of a motor stator is mainly realized by oil spraying of the oil ring or the oil pipe.
The sealing oil spraying ring is generally formed by assembling a plastic ring with oil holes inside and sealing gaskets connected with the upper end and the lower end of the plastic ring, and the plastic ring is generally formed by injection molding polyphenylene sulfide-based plastic filled with 40% glass fibers, and has good mechanical property, heat resistance, corrosion resistance and the like; the gasket is generally composed of rubber materials, and hydrogenated nitrile rubber is widely used in gaskets for sealing oil injection rings by virtue of good mechanical properties, acid resistance, oil resistance and solvent resistance, but because the gasket is in a severe environment with high temperature for a long time, the gasket is required to have higher service life and use safety, and is required to have good heat radiation performance and flame retardance, but the hydrogenated nitrile rubber is poor in heat conduction and flame retardance and is difficult to meet the requirements, so that the modified hydrogenated nitrile rubber composition is required to be provided to meet the application requirements in sealing oil injection rings.
Disclosure of Invention
The invention aims to provide a modified hydrogenated nitrile rubber composition and application thereof in sealing an oil spraying ring, so as to solve the problems in the background art.
The aim of the invention can be achieved by the following technical scheme:
the modified hydrogenated nitrile rubber composition comprises the following raw materials in parts by weight:
100 parts of hydrogenated nitrile rubber, 5-10 parts of aramid pulp, 30-40 parts of carbon black, 10-15 parts of boron nitride-based reinforcing agent, 5-10 parts of graphene-based reinforcing agent, 10-15 parts of plasticizer, 0.5-1.5 parts of stearic acid, 1-3 parts of anti-aging agent, 0.1-0.5 part of sulfur, 6-10 parts of vulcanizing agent and 3-5 parts of accelerator;
the modified hydrogenated nitrile rubber composition is prepared by the following steps:
and (3) carrying out pressurized banburying on the hydrogenated nitrile rubber, stearic acid and an anti-aging agent for 2-3min under the pressure of 0.25-0.35MPa, adding carbon black, aramid pulp, boron nitride-based reinforcing agent, graphene-based reinforcing agent and plasticizer, carrying out banburying for 3-5min under the pressure of 0.2-0.25MPa, keeping the pressure unchanged, heating to 90 ℃, adding sulfur, vulcanizing agent and accelerator, heating to 100-125 ℃, carrying out mixing for 15-20min, and then carrying out vulcanization treatment.
Further, the vulcanization treatment comprises primary vulcanization and secondary vulcanization, wherein the primary vulcanization temperature is 150-170 ℃, the vulcanization time is 20-30min, the vulcanization pressure is 5-10MPa, the secondary vulcanization temperature is 150-160 ℃, and the vulcanization time is 3-5h.
Further, the boron nitride-based reinforcing agent is prepared by the following steps:
step A1, placing hBN-COOH in a three-neck flask, adding acetonitrile, performing ultrasonic dispersion for 2 hours, adding triethylamine and 1, 3-bis (3-aminopropyl) -1, 3-tetramethyl disiloxane under the ice bath condition, introducing nitrogen, controlling the temperature to be lower than 5 ℃, slowly dropwise adding an acetonitrile solution of phosphorus oxychloride by adopting a constant-pressure dropping funnel, controlling the dropwise adding speed to be 2-3 s/drop, keeping the ice bath reaction for 1 hour after the dropwise adding is finished, then heating to reflux reaction for 24 hours, cooling to room temperature after the reaction is finished, performing suction filtration, washing a filter cake by using methanol, and drying to obtain modified boron nitride;
and A2, placing the modified boron nitride into glacial acetic acid, adding maleic anhydride and pyridine, stirring at 35 ℃ for reaction for 12 hours, cooling to room temperature after the reaction is finished, carrying out suction filtration, washing a filter cake with methanol, and drying to obtain the boron nitride-based reinforcing agent.
Further, the dosage ratio of hBN-COOH, triethylamine, 1, 3-bis (3-aminopropyl) -1, 3-tetramethyldisiloxane and phosphorus oxychloride in the step A1 is 3 to 5g:3.3-5.2g:0.04mol:0.02mol, phosphorus oxychloride in acetonitrile from phosphorus oxychloride and acetonitrile according to 1g:10mL of the modified boron nitride nanosheets with the modified carboxyl groups are obtained from Siami Ruixi biological technology Co.
Further, the usage ratio of modified boron nitride, glacial acetic acid, maleic anhydride and pyridine in the step A2 is 5g:50mL:1-2g:2mL.
Based on the excellent thermal conductivity, super-strong stability and super-high temperature resistance of boron nitride, the invention takes the commercial carboxyl modified boron nitride nanosheets as base materials, takes phosphorus oxychloride and 1, 3-bis (3-aminopropyl) -1, 3-tetramethyl disiloxane as reaction monomers, and triethylamine as an acid binding agent and a catalyst, prepares hyperbranched polyphosphazene coated boron nitride through a one-step method (A2+B3), wherein A is amino, B is Cl, obtains modified boron nitride with the surface rich in active amino by controlling the raw material dosage ratio, and then utilizes amino and maleic anhydride to carry out ring-opening reaction under the action of pyridine to form an amide bond, introduces unsaturated double bonds and generates new carboxyl to obtain the boron nitride-based reinforcing agent.
Further, the graphene-based reinforcing agent is prepared by the following steps:
LiOH.H 2 Adding O into absolute ethyl alcohol to form a solution a, ultrasonically dispersing graphene oxide into absolute ethyl alcohol to form a solution b, adding zinc acetate into absolute ethyl alcohol, heating to 75 ℃, stirring for 30min at the rotating speed of 300-500r/min, and dropwise adding the solution a and the solution b according to the volume ratio of 1:1, after the dripping is finished, heating to 80 ℃ and stirring for reaction for 30min, after the stirring is finished, cooling to room temperature, adding n-hexane with the volume being 2 times of the volume of a reaction product, standing for 12H at 4 ℃, pouring out supernatant, washing precipitate for 3 times with deionized water and absolute ethyl alcohol under the assistance of a centrifuge, drying the centrifugal product to constant weight at 60 ℃, grinding and dispersing to obtain the graphene-based reinforcing agent, liOH.H 2 O, graphene oxide and acetic acidThe zinc dosage ratio was 0.2g:60mg: and 0.38-0.46g, using graphene oxide as a carrier and zinc acetate as octanoic acid to obtain graphene oxide particles with nano zinc oxide loaded on the surface, namely a graphene-based reinforcing agent.
Further, the hydrogenated nitrile rubber has a bound acrylonitrile content of 19-50%, a residual double bond content of 0.5-10% and a Mooney viscosity of 50-100.
Further, the aramid pulp is the aramid pulp 3001, which is obtained by carrying out surface fibrillation treatment on the aramid fiber, and the unique surface structure of the aramid pulp greatly improves the grip of rubber and improves the strength and tear resistance of the rubber product.
Further, the carbon black comprises carbon black SPHERON 5000A and carbon black N990 according to a mass ratio of 1: 5-6.
Further, the plasticizer is plasticizer NB-4, has good compatibility with the hydrogenated nitrile rubber, and has excellent oil extraction resistance.
Further, the anti-aging agent is one or two of N-cyclohexyl-N '-phenyl-p-phenylenediamine and 4,4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine.
Further, one or both of dicumyl peroxide and bis (t-butylperoxyisopropyl) benzene are vulcanizing agents.
Further, the promoter is one or a combination of a plurality of TMTD, DM, TAIC and NA 22.
Further, a modified hydrogenated nitrile rubber composition, and the use of the modified hydrogenated nitrile rubber composition in the manufacture of gaskets for sealing oil injection rings.
The invention has the beneficial effects that:
1. the invention provides a modified hydrogenated nitrile rubber composition, the heat conductivity coefficient is 3.7-4.4W/(m.K), the oxygen index is 29.8-32.4%, the modified hydrogenated nitrile rubber composition not only has better mechanical strength, but also has high heat conduction and flame retardance, and the modified hydrogenated nitrile rubber composition has higher practical value as a sealing gasket material of a sealing oil injection ring, can endow the sealing gasket with excellent heat dissipation and high temperature resistance, and improves the service life and the use safety of the sealing oil injection ring.
2. Compared with unmodified boron nitride nanosheets, the hyperbranched polymer is introduced to improve the compatibility of the hyperbranched polymer and a rubber base material, and the flame retardant property of the hyperbranched polymer is enhanced, because the hyperbranched polyphosphazene contains flame retardant elements such as nitrogen, phosphorus, silicon and the like, a flame retardant synergistic effect exists among the elements, the carbon residue after rubber degradation can be improved, the flame retardant property is improved, unsaturated double bonds on the surface of the boron nitride-based reinforcing agent can be grafted onto a hydrogenated nitrile rubber chain under the action of a vulcanizing agent, carboxyl groups can form hydrogen bonds with hydroxyl groups on the surface of the graphene-based reinforcing agent, the interaction between the reinforcing agent and rubber can be effectively improved, the dispersibility of the reinforcing agent in rubber is improved, more importantly, zinc oxide on the surface of the carboxyl groups and the graphene-based reinforcing agent can react in a vulcanization stage to generate zinc carboxylate, and self-polymerize to generate zinc polyacrylate under the action of the vulcanizing agent to reinforce the rubber.
3. According to the invention, a graphene-based reinforcing agent is introduced into the hydrogenated nitrile rubber composition, and is graphene oxide with nano zinc oxide loaded on the surface, and the surface roughness of the graphene oxide is improved, the contact area is increased, and the bonding degree of a rubber substrate is improved by loading the nano zinc oxide; secondly, the problems that zinc oxide is easy to agglomerate and difficult to disperse when a commercial zinc oxide product is added as a vulcanization aid are solved; thirdly, the heat conducting particles are arranged between the interfaces of the boron nitride-based reinforcing agent and the graphene-based reinforcing agent, so that the boron nitride-based reinforcing agent and the graphene-based reinforcing agent form a three-dimensional heat conducting network in a matrix, and the heat dissipation performance of the material is improved; and fourthly, the zinc oxide is loaded, so that the catalytic carbon formation and substance blocking effect of the graphene oxide can be improved, and the flame retardance of the material is further improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A boron nitride-based reinforcing agent is prepared by the following steps:
step A1, placing 3g of hBN-COOH in a three-neck flask, adding 80mL of acetonitrile, performing ultrasonic dispersion for 2 hours, adding 3.3g of triethylamine and 0.04mol of 1, 3-bis (3-aminopropyl) -1, 3-tetramethyldisiloxane under the ice bath condition, introducing nitrogen, controlling the temperature to be 4 ℃, slowly dropwise adding a solution consisting of 0.02mol of phosphorus oxychloride and 30mL of acetonitrile by adopting a constant-pressure dropping funnel, controlling the dropwise adding speed to be 2 s/drop, keeping the ice bath for reaction for 1 hour after the dropwise adding is finished, heating to reflux reaction for 24 hours, cooling to room temperature after the reaction is finished, performing suction filtration, washing a filter cake by methanol, and drying to obtain modified boron nitride, wherein hBN-COOH is carboxyl modified boron nitride nanosheets purchased by Siamixi biotechnology Co;
and A2, placing 5g of modified boron nitride in 50mL of glacial acetic acid, adding 1g of maleic anhydride and 2mL of pyridine, stirring at 35 ℃ for reaction for 12h, cooling to room temperature after the reaction is finished, carrying out suction filtration, washing a filter cake with methanol, and drying to obtain the boron nitride-based reinforcing agent.
Example 2
A boron nitride-based reinforcing agent is prepared by the following steps:
step A1, placing 5g of hBN-COOH in a three-neck flask, adding 80mL of acetonitrile, performing ultrasonic dispersion for 2 hours, adding 5.2g of triethylamine and 0.04mol of 1, 3-bis (3-aminopropyl) -1, 3-tetramethyldisiloxane under the ice bath condition, introducing nitrogen, controlling the temperature to 3 ℃, slowly dropwise adding a solution consisting of 0.02mol of phosphorus oxychloride and 30mL of acetonitrile by adopting a constant-pressure dropping funnel, controlling the dropwise adding speed to be 3 s/drop, keeping the ice bath for reaction for 1 hour after the dropwise adding is finished, heating to reflux for 24 hours, cooling to room temperature after the reaction is finished, performing suction filtration, washing a filter cake by methanol, and drying to obtain modified boron nitride, wherein hBN-COOH is the same as in example 1;
and A2, placing 5g of modified boron nitride in 50mL of glacial acetic acid, adding 2g of maleic anhydride and 2mL of pyridine, stirring at 35 ℃ for reaction for 12h, cooling to room temperature after the reaction is finished, carrying out suction filtration, washing a filter cake with methanol, and drying to obtain the boron nitride-based reinforcing agent.
Example 3
A graphene-based reinforcing agent is prepared by the following steps:
0.2g of LiOH H 2 Adding O into 20mL of absolute ethyl alcohol to form a solution a, ultrasonically dispersing 60mg of graphene oxide into 30mL of absolute ethyl alcohol to form a solution b, adding 0.38g of zinc acetate into 50mL of absolute ethyl alcohol, heating to 75 ℃, stirring for 30min at the rotating speed of 300r/min, and dropwise adding the solution a and the solution b according to the volume ratio of 1:1, after the dripping is finished, heating to 80 ℃ and stirring for reaction for 30min, after the stirring is finished, cooling to room temperature, adding n-hexane with the volume being 2 times of the volume of a reaction product, standing for 12h at 4 ℃, pouring out supernatant, washing precipitate for 3 times with deionized water and absolute ethyl alcohol under the assistance of a centrifuge, drying the centrifugal product to constant weight at 60 ℃, and grinding and dispersing to obtain the graphene-based reinforcing agent.
Example 4
A graphene-based reinforcing agent is prepared by the following steps:
0.2g of LiOH H 2 Adding O into 20mL of absolute ethyl alcohol to form a solution a, ultrasonically dispersing 60mg of graphene oxide into 30mL of absolute ethyl alcohol to form a solution b, adding 0.46g of zinc acetate into 50mL of absolute ethyl alcohol, heating to 75 ℃, stirring for 30min at the rotating speed of 500r/min, and dropwise adding the solution a and the solution b according to the volume ratio of 1:1, after the dripping is finished, heating to 80 ℃ and stirring for reaction for 30min, after the stirring is finished, cooling to room temperature, adding n-hexane with the volume being 2 times of the volume of a reaction product, standing for 12h at 4 ℃, pouring out supernatant, washing precipitate for 3 times with deionized water and absolute ethyl alcohol under the assistance of a centrifuge, drying the centrifugal product to constant weight at 60 ℃, and grinding and dispersing to obtain the graphene-based reinforcing agent.
Example 5
The modified hydrogenated nitrile rubber composition comprises the following raw materials in parts by weight:
100 parts of hydrogenated nitrile rubber, 3001 part of aramid pulp, 30 parts of carbon black, 10 parts of the boron nitride-based reinforcing agent of example 1, 5 parts of the graphene-based reinforcing agent of example 3, NB-4-10 parts of plasticizer, 0.5 part of stearic acid, 1 part of anti-aging agent, 0.1 part of sulfur, 6 parts of vulcanizing agent and 3 parts of accelerator;
the modified hydrogenated nitrile rubber composition is prepared by the following steps:
and (3) carrying out pressurized banburying on hydrogenated nitrile rubber, stearic acid and an anti-aging agent for 2min under the pressure of 0.25MPa, adding carbon black, aramid pulp 3001, a boron nitride-based reinforcing agent, a graphene-based reinforcing agent and a plasticizer NB-4, carrying out banburying under the pressure of 0.2MPa for 3min, keeping the pressure unchanged, heating to 90 ℃, adding sulfur, a vulcanizing agent and an accelerator, heating to 100 ℃, carrying out mixing for 15min, vulcanizing under the pressure of 5MPa at the temperature of 150 ℃ for 20min, and vulcanizing under the temperature of 150 ℃ for 3 h.
Wherein the hydrogenated nitrile rubber is Therban5005 produced by Langsheng chemical company, and the carbon black is prepared from carbon black SPHERON 5000A and carbon black N990 according to the mass ratio of 1:5, wherein the anti-aging agent is N-cyclohexyl-N' -phenyl p-phenylenediamine, the vulcanizing agent is dicumyl peroxide, and the accelerator is TMTD.
Example 6
The modified hydrogenated nitrile rubber composition comprises the following raw materials in parts by weight:
100 parts of hydrogenated nitrile rubber, 3001 part of aramid pulp, 35 parts of carbon black, 12 parts of the boron nitride-based reinforcing agent of example 2, 8 parts of the graphene-based reinforcing agent of example 4, NB-4 parts of a plasticizer, 1 part of stearic acid, 2 parts of an anti-aging agent, 0.2 part of sulfur, 8 parts of a vulcanizing agent and 4 parts of an accelerator;
the modified hydrogenated nitrile rubber composition is prepared by the following steps:
the hydrogenated nitrile rubber, stearic acid and an anti-aging agent are subjected to pressure banburying for 2min under the pressure of 0.30MPa, carbon black, aramid pulp 3001, boron nitride-based reinforcing agent, graphene-based reinforcing agent and plasticizer NB-4 are added, banburying for 4min under the pressure of 0.25MPa, keeping the pressure unchanged, heating to 90 ℃, adding sulfur, vulcanizing agent and accelerator, heating to 110 ℃, mixing for 18min, vulcanizing for 25min under the temperature of 160 ℃ and the pressure of 8MPa, and vulcanizing for 4h under the temperature of 155 ℃.
Wherein the hydrogenated nitrile rubber is Therban5005 produced by Langsheng chemical company, and the carbon black is prepared from carbon black SPHERON 5000A and carbon black N990 according to the mass ratio of 1:6, wherein the anti-aging agent is 4,4 '-bis (alpha, alpha' -dimethylbenzyl) diphenylamine, the vulcanizing agent is dicumyl peroxide, and the accelerator is TMTD.
Example 7
The modified hydrogenated nitrile rubber composition comprises the following raw materials in parts by weight:
100 parts of hydrogenated nitrile rubber, 3001 10 parts of aramid pulp, 40 parts of carbon black, 15 parts of the boron nitride-based reinforcing agent of example 1, 10 parts of the graphene-based reinforcing agent of example 4, NB-415 parts of plasticizer, 1.5 parts of stearic acid, 3 parts of anti-aging agent, 0.5 part of sulfur, 10 parts of vulcanizing agent and 5 parts of accelerator;
the modified hydrogenated nitrile rubber composition is prepared by the following steps:
the hydrogenated nitrile rubber, stearic acid and an anti-aging agent are subjected to internal mixing for 3min under the pressure of 0.35MPa, carbon black, aramid pulp 3001, boron nitride-based reinforcing agent, graphene-based reinforcing agent and plasticizer NB-4 are added, internal mixing is carried out for 5min under the pressure of 0.25MPa, the pressure is kept unchanged, the temperature is increased to 90 ℃, sulfur, vulcanizing agent and accelerator are added, the temperature is increased to 125 ℃, the mixing is carried out for 20min, the temperature is 170 ℃, the pressure is 10MPa, the vulcanization is carried out for 30min, and the vulcanization is carried out for 5h under the temperature of 160 ℃.
Wherein the hydrogenated nitrile rubber is Therban5005 produced by Langsheng chemical company, and the carbon black is prepared from carbon black SPHERON 5000A and carbon black N990 according to the mass ratio of 1:6, wherein the anti-aging agent is N-cyclohexyl-N' -phenyl p-phenylenediamine, the vulcanizing agent is bis (tert-butyl peroxyisopropyl) benzene, and the accelerator is TMTD.
Comparative example 1
Compared with example 5, the boron nitride-based reinforcing agent in example 5 is replaced by hBN-COOH, and is a carboxyl modified boron nitride nano-sheet, which is purchased from the company of biological technology of sienna and the rest of raw materials and preparation process are the same as in example 5.
Comparative example 2
Compared with example 5, graphene-based reinforcing agent in example 5 is replaced by graphene oxide, and the rest raw materials and the preparation process are the same as those in example 5.
The rubber compositions obtained in examples 4 to 7 and comparative examples 1 to 2 were tested for hardness according to the standard GB/T531.1-2008, tensile strength according to the standard GB/T528-2009, thermal conductivity according to ASTM-D-5470, oxygen index according to the standard GB/T2406.2-2009, and the test results are shown in Table 1:
TABLE 1
As can be seen from Table 1, the thermal conductivity of the products obtained in examples 5 to 7 is 3.7 to 4.4W/(m.K), the oxygen index is 29.8 to 32.4%, and compared with comparative examples 3 and 4, the rubber composition prepared by the invention has better mechanical strength and high thermal conductivity and flame retardance, because the hBN-COOH adopted in comparative example 3 is not modified by hyperbranched polyphosphazene, cannot introduce flame retardant elements such as nitrogen, phosphorus and silicon, cannot effectively exert reinforcing and flame retardance, and the comparative example 4 adopts graphene oxide, but does not bear zinc oxide, cannot effectively exert reinforcing, thermal conductivity and flame retardance, so that the rubber composition prepared by the invention has larger practical value as a sealing gasket material of a sealing oil injection ring, can endow the sealing gasket with excellent heat dissipation and high temperature resistance, and prolongs the service life and service safety of the sealing oil injection ring.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The modified hydrogenated nitrile rubber composition is characterized by comprising the following raw materials in parts by weight:
100 parts of hydrogenated nitrile rubber, 5-10 parts of aramid pulp, 30-40 parts of carbon black, 10-15 parts of boron nitride-based reinforcing agent, 5-10 parts of graphene-based reinforcing agent, 10-15 parts of plasticizer, 0.5-1.5 parts of stearic acid, 1-3 parts of anti-aging agent, 0.1-0.5 part of sulfur, 6-10 parts of vulcanizing agent and 3-5 parts of accelerator;
wherein, the boron nitride-based reinforcing agent is prepared by the following steps:
placing modified boron nitride into glacial acetic acid, adding maleic anhydride and pyridine, and stirring at 35 ℃ for reacting for 12 hours to obtain a boron nitride-based reinforcing agent;
the modified boron nitride is prepared by the following steps:
placing hBN-COOH in a three-neck flask, adding acetonitrile, performing ultrasonic dispersion for 2 hours, adding triethylamine and 1, 3-bis (3-aminopropyl) -1, 3-tetramethyl disiloxane under the ice bath condition, introducing nitrogen, controlling the temperature to be lower than 5 ℃, slowly dropwise adding an acetonitrile solution of phosphorus oxychloride by adopting a constant-pressure dropping funnel, keeping the ice bath for reaction for 1 hour after the dropwise adding is finished, and performing reflux reaction for 24 hours to obtain modified boron nitride;
the graphene-based reinforcing agent is prepared by the following steps:
LiOH.H 2 Adding O into absolute ethyl alcohol to form a solution a, ultrasonically dispersing graphene oxide into absolute ethyl alcohol to form a solution b, adding zinc acetate into absolute ethyl alcohol, heating to 75 ℃, stirring for 30min at the rotating speed of 300-500r/min, and dropwise adding the solution a and the solution b according to the volume ratio of 1:1, after the dripping is finished, heating to 80 ℃ and stirring for reaction for 30min, after the stirring is finished, cooling to room temperature, adding n-hexane with the volume being 2 times of that of a reaction product, standing for 12h at 4 ℃, pouring out supernatant, washing precipitate with deionized water and absolute ethyl alcohol for 3 times with the aid of a centrifuge, and separatingDrying the heart product at 60 ℃ to constant weight, and grinding and dispersing to obtain the graphene-based reinforcing agent;
the plasticizer is plasticizer NB-4;
the anti-aging agent is one or two of N-cyclohexyl-N '-phenyl-p-phenylenediamine and 4,4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine;
the vulcanizing agent is one or two of dicumyl peroxide and bis (tert-butyl peroxyisopropyl) benzene;
the promoter is one or a combination of TMTD, DM, TAIC and NA 22.
2. A modified hydrogenated nitrile rubber composition according to claim 1, characterised in that the modified boron nitride, glacial acetic acid, maleic anhydride and pyridine are used in a ratio of 5g:50mL:1-2g:2mL.
3. A modified hydrogenated nitrile rubber composition according to claim 1, characterised in that the ratio of hBN-COOH, triethylamine, 1, 3-bis (3-aminopropyl) -1, 3-tetramethyldisiloxane and phosphorus oxychloride is 3-5g:3.3-5.2g:0.04mol:0.02mol.
4. A modified hydrogenated nitrile rubber composition according to claim 1, characterized in that Li OH H 2 The dosage ratio of O, graphene oxide and zinc acetate is 0.2g:60mg:0.38-0.46g.
5. A modified hydrogenated nitrile rubber composition according to claim 1, characterised in that the hydrogenated nitrile rubber has a bound acrylonitrile content of 19-50%, a residual double bond content of 0.5-10% and a mooney viscosity of 50-100.
6. A modified hydrogenated nitrile rubber composition as claimed in claim 1, characterized in that the carbon black consists of carbon black sphoron 5000A and carbon black N990 in a mass ratio of 1: 5-6.
7. Use of a modified hydrogenated nitrile rubber composition as defined in any one of claims 1 to 6 for sealing oil-injected rings.
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| DE102020104229A1 (en) * | 2019-09-26 | 2021-04-01 | CMT Membrane Technology (Xiamen) Co., Ltd. | Nitrile rubber and its manufacturing process as well as sealing ring |
| WO2022070718A1 (en) * | 2020-09-29 | 2022-04-07 | 富士フイルム株式会社 | Surface-modified boron nitride particles, method of producing surface-modified boron nitride particles, thermally conductive material-forming composition, thermally conductive material, thermally conductive sheet, and device having thermally conductive layer |
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| WO2022070718A1 (en) * | 2020-09-29 | 2022-04-07 | 富士フイルム株式会社 | Surface-modified boron nitride particles, method of producing surface-modified boron nitride particles, thermally conductive material-forming composition, thermally conductive material, thermally conductive sheet, and device having thermally conductive layer |
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