CN106432835A - Sealing material and full-functional shaft mouth sealing box containing sealing material - Google Patents
Sealing material and full-functional shaft mouth sealing box containing sealing material Download PDFInfo
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- CN106432835A CN106432835A CN201610834270.1A CN201610834270A CN106432835A CN 106432835 A CN106432835 A CN 106432835A CN 201610834270 A CN201610834270 A CN 201610834270A CN 106432835 A CN106432835 A CN 106432835A
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- encapsulant
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- rubber
- calcium carbonate
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- 238000007789 sealing Methods 0.000 title claims abstract description 15
- 239000003566 sealing material Substances 0.000 title abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 26
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003365 glass fiber Substances 0.000 claims abstract description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 17
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 16
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 14
- 239000011593 sulfur Substances 0.000 claims abstract description 14
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 13
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 12
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 12
- 229920001194 natural rubber Polymers 0.000 claims abstract description 12
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 11
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000008117 stearic acid Substances 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 49
- 239000008393 encapsulating agent Substances 0.000 claims description 36
- 229920001971 elastomer Polymers 0.000 claims description 23
- 239000005060 rubber Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 15
- 238000013329 compounding Methods 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 12
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 claims description 8
- 238000004073 vulcanization Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 229910052779 Neodymium Inorganic materials 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 6
- 230000003078 antioxidant effect Effects 0.000 claims description 6
- 238000003490 calendering Methods 0.000 claims description 6
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 claims description 6
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 6
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 claims description 3
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical group CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- QCXJGYOPONQFLO-UHFFFAOYSA-N [La].NC(=S)S Chemical compound [La].NC(=S)S QCXJGYOPONQFLO-UHFFFAOYSA-N 0.000 claims 2
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 229940116364 hard fat Drugs 0.000 claims 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- 239000004575 stone Substances 0.000 abstract description 2
- 230000003712 anti-aging effect Effects 0.000 abstract 1
- 239000004568 cement Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000006870 function Effects 0.000 description 13
- 239000003921 oil Substances 0.000 description 7
- ZWRRTZVHXPEXFK-UHFFFAOYSA-K N,N-diethylcarbamodithioate lanthanum(3+) Chemical group C(C)N(C([S-])=S)CC.[La+3].C(C)N(C([S-])=S)CC.C(C)N(C([S-])=S)CC ZWRRTZVHXPEXFK-UHFFFAOYSA-K 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- CETBSQOFQKLHHZ-UHFFFAOYSA-N Diethyl disulfide Chemical group CCSSCC CETBSQOFQKLHHZ-UHFFFAOYSA-N 0.000 description 2
- VSCPNUIRAFSXSV-UHFFFAOYSA-N carbamic acid;neodymium Chemical compound [Nd].NC(O)=O VSCPNUIRAFSXSV-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- JBQMAAJJRTWUPQ-UHFFFAOYSA-N 1,2-diphenylguanidine Chemical compound C1(=CC=CC=C1)NC(NC1=CC=CC=C1)=N.C1(=CC=CC=C1)NC(=N)NC1=CC=CC=C1 JBQMAAJJRTWUPQ-UHFFFAOYSA-N 0.000 description 1
- VETPHHXZEJAYOB-UHFFFAOYSA-N 1-n,4-n-dinaphthalen-2-ylbenzene-1,4-diamine Chemical compound C1=CC=CC2=CC(NC=3C=CC(NC=4C=C5C=CC=CC5=CC=4)=CC=3)=CC=C21 VETPHHXZEJAYOB-UHFFFAOYSA-N 0.000 description 1
- 229940069744 2,2'-dithiobisbenzothiazole Drugs 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- WORCCYVLMMTGFR-UHFFFAOYSA-M loxoprofen sodium Chemical compound [Na+].C1=CC(C(C([O-])=O)C)=CC=C1CC1C(=O)CCC1 WORCCYVLMMTGFR-UHFFFAOYSA-M 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2003/1034—Materials or components characterised by specific properties
- C09K2003/1053—Elastomeric materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Fluid Mechanics (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Sealing Material Composition (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to a sealing material and a full-functional shaft mouth sealing box containing the sealing material. The sealing material is prepared from the following components in parts by mass: 16-18 parts of natural rubber, 18-20 parts of nitrile rubber, 30-32 parts of nano-calcium carbonate, 0.4-0.5 part of sulfur, 0.4-0.5 part of zinc oxide, 0.4-0.5 part of stearic acid, 0.5-0.6 part of an accelerant DM, 0.8-1 part of an accelerant D, 1.5-1.8 parts of a rare-earth complex accelerant, 0.5-2 parts of an anti-aging agent, 22-25 parts of glass fibers, 1-3 parts of cast stone powder and 1-3 parts of porcelain cement. According to the preparation method of the sealing material, a sealing box is filled with the sealing material, so that the sealing performance of the sealing box can be effectively improved and the service life of the sealing box can be effectively prolonged.
Description
Technical field
The present invention relates to seal box field, and in particular to a kind of encapsulant and its full-functional well containing the encapsulant
Mouth seal box.
Background technology
In oil exploitation, on ground, the upper and lower polished rod, sucker rod of reciprocating through of oil pumper drives downhole pump work
Make, downhole crude can be extracted into ground, in oil pumping process, polished rod ceaselessly in the upper and lower reciprocating motion of well head, in order to keep light
Bar and the sealing of well head, are provided with disk seal box in well head, and the polished rod of activity passes through from hollow packing box and packing, passes through
The isolation of down-hole and ground environment is realized in the tight fit of polished rod and packing.As oil field enters high water cut viscous heavy crude oil, overcast
Do not spend well number to be continuously increased, rod and tube partial-wear is serious, makes sucker rod produce vibration in up-down stroke, adds pumping unit hanging point with well
Mouthful do not align, the problems such as cause the sealing frequent failure of polished rod seal box, packing short life, crude oil leakage, pollution environment, seriously
The normal production of impact oil well.
Content of the invention
It is an object of the invention to provide a kind of encapsulant and its global function well head seal box containing the encapsulant,
In order to the problem of seal box life-time service sealing effectiveness difference in prior art, for achieving the above object, the present invention adopts sealing material
Material, improves the sealing property of seal box.Specifically, the technical solution used in the present invention is：
A kind of encapsulant, described encapsulant includes each component of following mass fraction：Natural rubber 16-18 part,
Nitrile rubber 18-20 part, nano-calcium carbonate 30-32 part, sulfur 0.4-0.5 part, zinc oxide 0.4-0.5 part, stearic acid 0.4-0.5
Part, altax (2,2'- dithio-bis-benzothiazole) 0.5-0.6 part, diphenylguanidine (diphenylguanidine) 0.8-1 part, rare earth compounding
Accelerator 1.5-1.8 part, age resistor 0.5-2 part, glass fibre 22-25 part, glass-cermic powder 1-3 part, porcelain powder 1-3 part.
Further, described encapsulant includes each component of following mass fraction：17 parts of natural rubber, nitrile rubber
19 parts, 31 parts of nano-calcium carbonate, 0.5 part of sulfur, 0.5 part of zinc oxide, 0.5 part of stearic acid, 0.6 part of altax, diphenylguanidine
0.8 part, 1.5 parts of rare earth compounding accelerator, 1.5 parts of age resistor, 23.1 parts of glass fibre, 2 parts of glass-cermic powder, 2 parts of porcelain powder.
Further, described nano-calcium carbonate is 0.03-0.08um nm-class active calcium carbonate for particle diameter.
Further, described glass fibre is after vinyltrimethoxy silane surface treatment, recycles asphalt mixtures modified by epoxy resin
Fat carries out the modified glass-fiber of face coat, a diameter of 1-10um of the modified glass-fiber.
Further, described rare earth compounding accelerator is lanthanum diethyldithiocarbamate and diethyl-dithio
The mixture of carbamic acid neodymium.
Further, lanthanum diethyldithiocarbamate and diethyl-dithio in described rare earth compounding accelerator
The mass ratio of carbamic acid neodymium is 1:1.
Further, described age resistor is antioxidant 264 (6- ditertbutylparacresol), antioxidant D NP (N, N'- bis-
(betanaphthyl) p-phenylenediamine), antioxidant NBC (N, N- nickel dibutyl dithiocarbamate), antioxidant MB (2- sulfydryl benzo miaow
Azoles) one of which.
Nano-calcium carbonate is added in natural rubber and synthetic rubber, can high rubber mechanical property, improve which to rubber
Reinforcing effect, and can be with reduces cost, sulfur is more stable by rubber molecule structure.The wear-and corrosion-resistant of the existing cast stone of glass-cermic powder
Performance, has good toughness and higher mechanical strength again, adds glass-cermic powder assist with zinc oxide in high-abrasive material
Same-action, while sulfuration is accelerated, improves the thermostability of the rubber of rubber, ageing resistance, fatigue durability, wearability.Porcelain powder
The tearing toughness of rubber, wearability can be improved, reduced heat and compress indeformable with nano-calcium carbonate synergism.
Present invention also offers a kind of preparation method of encapsulant, the method comprising the steps of：
First, wet method calendering process is adopted, by natural rubber, nitrile rubber, nano-calcium carbonate, sulfur, zinc oxide, stearic acid
After altax, diphenylguanidine, rare earth compounding accelerator, age resistor, glass-cermic powder, porcelain powder, mixing are plasticated, mixture is formed, will
Mixture cuts into the fritter of 3mm × 3mm, by mixture and benzene according to mass ratio 1：5 add benzene so as to become rubber paste, use
Benzene dissolving becomes rubber paste；
2nd, by glass fibre with after obtained rubber paste is mixed homogeneously in step one, it is dried at room temperature for 5 days, then is opening
The thin slice of 2-3mm thickness being rolled in mill, being vulcanized on vulcanizing press, conditions of vulcanization is：130-140 DEG C, 6-8Mpa, 15 points
Clock, obtains encapsulant.
Present invention also offers a kind of global function well head seal box containing encapsulant, including main part and filling part
Point, described main part is by upper press cover, compact heap, upper seal bore, upper packing, cushion block, check valve, briquetting, lower packing, tuning
Sealing drum, bulb gland, ball cup and Gask-O-Seal composition；Claim is filled between described upper packing and lower packing
Encapsulant described in 1.
The invention has the advantages that：
Global function well head seal box encapsulant is filled in seal box, dynamic sealing function can be preferably provided,
And wear-and corrosion-resistant, long service life, while low cost.The seal box ageing resistace of the present invention is 3 times of conventional seals box
More than.The present invention coordinates the universal vulcanization accelerator of the rubber for often using in accelerator replacement prior art using novel rare-earth,
Solving the universal vulcanization accelerator of rubber stimulates skin and mucosa, can sensitization, dermatitis and skin difficult to treat can be caused to burst
The deficiencies such as infectionss.The addition of glass-cermic powder and porcelain powder can strengthen the anti-wear performance of seal box, increase service life.
Specific embodiment
Following examples are used for the present invention to be described, but are not limited to the scope of the present invention.
Embodiment 1
The global function well head seal box of the present embodiment is prepared according to the following steps：
Using wet method calendering process, the content of each component according to mass fraction, by 16 parts of natural rubber, nitrile rubber 18
Part, 30 parts of nano-calcium carbonate, 0.4 part of sulfur, 0.4 part of zinc oxide, 0.4 part of stearic acid, 0.5 part of altax, diphenylguanidine
0.8 part, 0.75 part of lanthanum diethyldithiocarbamate, diethyldithiocar bamic acid neodymium in rare earth compounding accelerator
0.75 part, 0.5 part of antioxidant 264,22 parts of glass fibre, 1 part of glass-cermic powder, 1 part of porcelain powder, carry out after mixing plasticates, forming mixing
Thing, mixture is cut into the fritter of 3mm × 3mm, by mixture and benzene according to mass ratio 1：5 add benzene so as to become rubber
Paste, after solvent benzol is vapored away；By glass fibre with after obtained rubber paste is mixed homogeneously in step one, 5 are dried at room temperature for
My god, then it is rolled into the thick thin slice of 2-3mm on a mill, and vulcanizing on vulcanizing press, conditions of vulcanization is：130-140 DEG C, 6-
8Mpa, 15 minutes, obtains encapsulant.During obtained encapsulant is filled to global function well head seal box.
Embodiment 2
The global function well head seal box of the present embodiment is prepared according to the following steps：
Using wet method calendering process, the content of each component according to mass fraction, by 18 parts of natural rubber, nitrile rubber 20
Part, 32 parts of nano-calcium carbonate, 0.5 part of sulfur, 0.5 part of zinc oxide, 0.5 part of stearic acid, 0.6 part of altax, diphenylguanidine 1
Part, 0.9 part of lanthanum diethyldithiocarbamate, 0.9 part of diethyldithiocar bamic acid neodymium in rare earth compounding accelerator,
2 parts of antioxidant D NP, 25 parts of glass fibre, 3 parts of glass-cermic powder, 3 parts of porcelain powder, carry out after mixing plasticates, forming mixture, will mixing
Thing cuts into the fritter of 3mm × 3mm, by mixture and benzene according to mass ratio 1：5 add benzene so as to become rubber paste, in room temperature
Lower drying 5 days, after solvent benzol is vapored away；By glass fibre with after in step one, obtained rubber paste is mixed homogeneously, in room temperature
Lower drying 5 days, then it is rolled into the thin slice of 2-3mm thickness on a mill, vulcanizing on vulcanizing press, conditions of vulcanization is：130-
140 DEG C, 6-8Mpa, 15 minutes, obtain encapsulant.During obtained encapsulant is filled to global function well head seal box.
Embodiment 3
The global function well head seal box of the present embodiment is prepared according to the following steps：
Using wet method calendering process, the content of each component is according to mass fraction, just 17 parts of natural rubber, nitrile rubber 19
Part, 31 parts of nano-calcium carbonate, 0.5 part of sulfur, 0.5 part of zinc oxide, 0.5 part of stearic acid, 0.6 part of altax, diphenylguanidine
0.8 part, 0.75 part of lanthanum diethyldithiocarbamate, diethyldithiocar bamic acid neodymium in rare earth compounding accelerator
0.75 part, 1.5 parts of antioxidant NBC, 23.1 parts of glass fibre, 2 parts of glass-cermic powder, 2 parts of porcelain powder, carry out after mixing plasticates, being formed mixed
Compound, mixture is cut into the fritter of 3mm × 3mm, by mixture and benzene according to mass ratio 1：5 add benzene, are made with benzene dissolving
Which becomes rubber paste, is dried at room temperature for 5 days, after solvent benzol is vapored away；By glass fibre and obtained rubber in step one
After paste mix homogeneously, it is dried at room temperature for 5 days, then is rolled into the thin slice of 2-3mm thickness on a mill, sulfur on the vulcanizing press
Change, conditions of vulcanization is：130-140 DEG C, 6-8Mpa, 15 minutes, obtain encapsulant.Obtained encapsulant is filled to global function
In wellhead sealing box.
Embodiment 4
The global function well head seal box of the present embodiment is prepared according to the following steps：
Using wet method calendering process, the content of each component is according to mass fraction, just 16 parts of natural rubber, nitrile rubber 20
Part, 32 parts of nano-calcium carbonate, 0.45 part of sulfur, 0.45 part of zinc oxide, 0.45 part of stearic acid, 0.55 part of altax, accelerator
0.9 part of D, 0.8 part of lanthanum diethyldithiocarbamate, diethyldithiocar bamic acid neodymium in rare earth compounding accelerator
0.8 part, 1.5 parts of antioxidant MB, 23.1 parts of glass fibre, 2 parts of glass-cermic powder, 2 parts of porcelain powder, carry out after mixing plasticates, forming mixing
Thing, mixture is cut into the fritter of 3mm × 3mm, by mixture and benzene according to mass ratio 1：5 add benzene, make which with benzene dissolving
Become rubber paste, be dried at room temperature for 5 days, after solvent benzol is vapored away；By glass fibre and obtained rubber paste in step one
After mix homogeneously, it is dried at room temperature for 5 days, then is rolled into the thin slice of 2-3mm thickness on a mill, sulfur on the vulcanizing press
Change, conditions of vulcanization is：130-140 DEG C, 6-8Mpa, 15 minutes, obtain encapsulant.Obtained encapsulant is filled to global function
In wellhead sealing box.
Embodiment 5
Oil immersion degradation
Encapsulant obtained in embodiment 1-4 and contrast are carried out oil immersion degradation with conventional seals material, with checking
Service life problem during Oil Field use.
Experiment capital equipment：
| Instrument title | Model | Manufacturer |
| Programmable constant temperature humidity chamber | JW-80XJ-00 | Shanghai is huge for experimental instruments and equipment limited |
| Rubber permanent compression test device | MZ-4020 | Jiangsu Mingzhu Testing Machinery Co., Ltd. |
| The emerging durometer of shore A | LX-A | Upper Helen's victory electromechanical meters company limited |
| The portable calibrator of rubber | MZ-4031 | Jiangsu Mingzhu Testing Machinery Co., Ltd. |
Experimental procedure：
Lubricating oil is put in beaker, it is ensured that experiment fixture can be totally submerged.Lubricating oil shell lubricating oil.In pressure
Lubricating oil used being coated in the compression plate face of contracting fixture, so that sample and compression clamp is not bound to together, measurement sample is original
Thickness, is clamped after sample with fixture and is put in beaker, beaker is put into aging use constant temperature humidity chamber, is opened and reach and be specified
Start timing after temperature, after timing is full 240 hours, sample is taken out, sample at ambient temperature, is placed 2 hours naturally, measurement examination
The thickness that sample recovers, then calculates permanent set.
Permanent set=(height after original height-experiment)/(maximum height limit of original height-fixture) x100%
Experimental result is as follows:
| Sample | Conventional seals material | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Permanent set | 71% | 23% | 22% | 21% | 24% |
Experiment shows that the ageing resistace of the present invention improves more than 3 times than conventional seals material.
Although the specific embodiment of the present invention is the foregoing described, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
On the premise of the principle and essence of the present invention, various changes or modifications can be made to these embodiments, but these change
Protection scope of the present invention is each fallen within modification.
Claims (9)
1. a kind of encapsulant, it is characterised in that：Described encapsulant includes each component of following mass fraction：Natural rubber
16-18 part, nitrile rubber 18-20 part, nano-calcium carbonate 30-32 part, sulfur 0.4-0.5 part, zinc oxide 0.4-0.5 part, Hard Fat
Sour 0.4-0.5 part, altax 0.5-0.6 part, diphenylguanidine 0.8-1 part, rare earth compounding accelerator 1.5-1.8 part, prevent old
Agent 0.5-2 part, glass fibre 22-25 part, glass-cermic powder 1-3 part, porcelain powder 1-3 part.
2. a kind of encapsulant according to claim 1, it is characterised in that：Described encapsulant includes following mass parts
Each component of number：17 parts of natural rubber, 19 parts of nitrile rubber, 31 parts of nano-calcium carbonate, 0.5 part of sulfur, 0.5 part of zinc oxide, firmly
0.5 part of fat acid, 0.6 part of altax, 0.8 part of diphenylguanidine, 1.5 parts of rare earth compounding accelerator, 1.5 parts of age resistor, glass
23.1 parts of fiber, 2 parts of glass-cermic powder, 2 parts of porcelain powder.
3. a kind of encapsulant according to claim 1, it is characterised in that：Described nano-calcium carbonate for particle diameter is
0.03-0.08um nm-class active calcium carbonate.
4. a kind of encapsulant according to claim 1, it is characterised in that：Described glass fibre be through vinyl front three
After TMOS surface treatment, epoxy resin is recycled to carry out the modified glass-fiber of face coat, the modified glass-fiber
A diameter of 1-10um.
5. a kind of encapsulant according to claim 1, it is characterised in that：Described rare earth compounding accelerator is diethyl
Base aminodithioformic acid lanthanum and the mixture of diethyldithiocar bamic acid neodymium.
6. a kind of encapsulant according to claim 5, it is characterised in that：Diethyl in described rare earth compounding accelerator
The mass ratio of base aminodithioformic acid lanthanum and diethyldithiocar bamic acid neodymium is 1:1.
7. a kind of encapsulant according to claim 1, it is characterised in that：Described age resistor is antioxidant 264, prevents old
Agent DNP, antioxidant NBC, antioxidant MB one of which.
8. a kind of preparation method of encapsulant, it is characterised in that：The method comprising the steps of：
First, wet method calendering process is adopted, natural rubber, nitrile rubber, nano-calcium carbonate, sulfur, zinc oxide, stearic acid is promoted
After agent DM, diphenylguanidine, rare earth compounding accelerator, age resistor, glass-cermic powder, porcelain powder, mixing are plasticated, mixture is formed, will mixing
Thing cuts into the fritter of 3mm × 3mm, by mixture and benzene according to mass ratio 1：5 add benzene, and dissolving becomes rubber paste；
2nd, by glass fibre with after in step one, obtained rubber paste is mixed homogeneously, it is dried at room temperature for 5 days, then in mill
On be rolled into the thin slice of 2-3mm thickness, vulcanize on the vulcanizing press, conditions of vulcanization is：130-140 DEG C, 6-8Mpa, 15 minutes,
Obtain encapsulant.
9. a kind of global function well head seal box containing encapsulant, including main part and filling part, described main part
Divide by upper press cover, compact heap, upper seal bore, upper packing, cushion block, check valve, briquetting, lower packing, tuning sealing drum, bulb pressure
Lid, ball cup and Gask-O-Seal composition；It is characterized in that：Claim 1 is filled between described upper packing and lower packing
Described encapsulant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834270.1A CN106432835A (en) | 2016-09-20 | 2016-09-20 | Sealing material and full-functional shaft mouth sealing box containing sealing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834270.1A CN106432835A (en) | 2016-09-20 | 2016-09-20 | Sealing material and full-functional shaft mouth sealing box containing sealing material |
Publications (1)
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| CN106432835A true CN106432835A (en) | 2017-02-22 |
Family
ID=58166322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610834270.1A Pending CN106432835A (en) | 2016-09-20 | 2016-09-20 | Sealing material and full-functional shaft mouth sealing box containing sealing material |
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| CN109265775A (en) * | 2018-08-24 | 2019-01-25 | 北京化工大学 | A kind of no Zn-Ca series rubber master batch type rare-earth rubber promotor and preparation method thereof |
| CN109942924A (en) * | 2019-03-11 | 2019-06-28 | 中国石油天然气股份有限公司 | A kind of oil pumping machine well head airtight and watertight padding having sustained release self-lubricating function |
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