CN114507557A - High-stability sealing grease for shield tunneling machine and preparation method thereof - Google Patents
High-stability sealing grease for shield tunneling machine and preparation method thereof Download PDFInfo
- Publication number
- CN114507557A CN114507557A CN202210144281.2A CN202210144281A CN114507557A CN 114507557 A CN114507557 A CN 114507557A CN 202210144281 A CN202210144281 A CN 202210144281A CN 114507557 A CN114507557 A CN 114507557A
- Authority
- CN
- China
- Prior art keywords
- grease
- sealing grease
- stability
- bentonite
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 80
- 239000004519 grease Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 230000005641 tunneling Effects 0.000 title claims description 15
- 239000000440 bentonite Substances 0.000 claims abstract description 44
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 44
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000835 fiber Substances 0.000 claims abstract description 32
- 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 claims abstract description 23
- 239000003063 flame retardant Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 18
- 239000002199 base oil Substances 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 12
- 239000002244 precipitate Substances 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 23
- 238000001035 drying Methods 0.000 claims description 16
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- 238000000034 method Methods 0.000 claims description 14
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- 235000019198 oils Nutrition 0.000 claims description 14
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- 239000000203 mixture Substances 0.000 claims description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 235000006708 antioxidants Nutrition 0.000 claims description 11
- 238000004898 kneading Methods 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
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- 238000010438 heat treatment Methods 0.000 claims description 9
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
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- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 claims description 6
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 150000001642 boronic acid derivatives Chemical class 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- PFEFOYRSMXVNEL-UHFFFAOYSA-N 2,4,6-tritert-butylphenol Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 PFEFOYRSMXVNEL-UHFFFAOYSA-N 0.000 claims description 3
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 claims description 3
- SAUIGQBKPDQYHL-QXMHVHEDSA-N 6-methylheptyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCCCCC(C)C SAUIGQBKPDQYHL-QXMHVHEDSA-N 0.000 claims description 3
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004255 Butylated hydroxyanisole Substances 0.000 claims description 3
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- YFPJFKYCVYXDJK-UHFFFAOYSA-N Diphenylphosphine oxide Chemical compound C=1C=CC=CC=1[P+](=O)C1=CC=CC=C1 YFPJFKYCVYXDJK-UHFFFAOYSA-N 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical group C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 235000010323 ascorbic acid Nutrition 0.000 claims description 3
- 239000011668 ascorbic acid Substances 0.000 claims description 3
- 229960005070 ascorbic acid Drugs 0.000 claims description 3
- MXJIHEXYGRXHGP-UHFFFAOYSA-N benzotriazol-1-ylmethanol Chemical compound C1=CC=C2N(CO)N=NC2=C1 MXJIHEXYGRXHGP-UHFFFAOYSA-N 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- 235000019282 butylated hydroxyanisole Nutrition 0.000 claims description 3
- CZBZUDVBLSSABA-UHFFFAOYSA-N butylated hydroxyanisole Chemical compound COC1=CC=C(O)C(C(C)(C)C)=C1.COC1=CC=C(O)C=C1C(C)(C)C CZBZUDVBLSSABA-UHFFFAOYSA-N 0.000 claims description 3
- 229940043253 butylated hydroxyanisole Drugs 0.000 claims description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000004359 castor oil Substances 0.000 claims description 3
- 235000019438 castor oil Nutrition 0.000 claims description 3
- 239000012295 chemical reaction liquid Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229940049964 oleate Drugs 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- BARWIPMJPCRCTP-UHFFFAOYSA-N oleic acid oleyl ester Natural products CCCCCCCCC=CCCCCCCCCOC(=O)CCCCCCCC=CCCCCCCCC BARWIPMJPCRCTP-UHFFFAOYSA-N 0.000 claims description 3
- BARWIPMJPCRCTP-CLFAGFIQSA-N oleyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC BARWIPMJPCRCTP-CLFAGFIQSA-N 0.000 claims description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 239000003549 soybean oil Substances 0.000 claims description 3
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- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 description 8
- 239000008107 starch Substances 0.000 description 8
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- 238000010276 construction Methods 0.000 description 7
- 239000004368 Modified starch Substances 0.000 description 5
- 229920000881 Modified starch Polymers 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 4
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- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
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- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
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- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
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- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
- C10M2215/065—Phenyl-Naphthyl amines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/026—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrile group
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/044—Polyamides
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/26—Waterproofing or water resistance
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/36—Seal compatibility, e.g. with rubber
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/34—Lubricating-sealants
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a high-stability sealing grease for a shield machine and a preparation method thereof, and the high-stability sealing grease for the shield machine comprises the following components in percentage by mass: 10-40% of base oil, 20-30% of filler, 10-15% of organic bentonite, 10-23% of flame retardant, 8-12% of lubricant, 8-15% of tackifier, 2-6% of fiber and 1-7% of antioxidant. According to the invention, the organic bentonite is added into the sealing grease, so that the combination degree of each component in the sealing grease can be greatly improved, and the waterproof performance and the water-resistant sealing performance of the sealing grease are further improved.
Description
Technical Field
The invention belongs to the technical field of sealing grease, and particularly relates to high-stability sealing grease for a shield tunneling machine and a preparation method thereof.
Background
In order to adapt to the development of urban construction, underground engineering, particularly urban rail transit tunnel construction, is increasing day by day. The shield machine (named as shield tunnel excavator) is a special tunnel driving engineering machine for excavating weak geology to make it become a hole in underground and mountain engineering construction, and is widely applied to tunnel excavation engineering. In the propelling process of the shield tunneling machine, the propelling of the shield tunneling machine and the damage of a shield tail device can be influenced due to the friction between the shield tail and the pipe wall, and the normal work of the shield tunneling machine and the construction difficulty can be increased due to the seepage of mud in a soil layer. The shield tail sealing grease is one of main matching materials of a steel wire brush type shield tail of the shield machine, and is used for sealing the tail part of the shield machine and isolating the infiltration of underground water and mud; meanwhile, the lubricating effect of the shield tail can reduce the friction between the shield tail and the outer wall of the duct piece, the shield tail is effectively protected, the smooth propulsion of the shield machine is guaranteed, and in addition, the shield tail sealing grease can also have the effects of rust prevention and corrosion prevention on a steel wire brush and a steel structure on the shield machine. Therefore, the shield tail sealing grease with excellent quality has higher water pressure resistance, sealing property, lubricating property, stability and the like.
At present, most shield tail sealing grease adopted in domestic tunnel construction has the problems of poor sealing performance and poor pumping performance. In the shield tunneling process, if the shield tunneling temperature is high, the sealing grease cannot ensure good lubricating and sealing performance, constructors can only rely on measures of increasing grease pumping, stopping to cool, slowing down grouting and the like to solve the problem of poor sealing performance of the sealing grease, but frequent adoption of the measures can affect the construction period, increase the construction cost and cause safety production accidents in severe cases, so that research and development of the high-stability shield tail sealing grease are imperative.
Disclosure of Invention
The invention aims to provide high-stability sealing grease for a shield machine and a preparation method thereof, and aims to solve the problem that the existing sealing grease is poor in sealing performance.
In order to achieve the purpose, the invention adopts the technical scheme that: a high-stability sealing grease for a shield machine comprises the following components in percentage by mass: 10-40% of base oil, 20-30% of filler, 10-15% of organic bentonite, 10-23% of flame retardant, 8-12% of lubricant, 8-15% of tackifier, 2-6% of fiber and 1-7% of antioxidant.
Preferably, the base oil is one or more of pentaerythritol oleate, castor oil, soybean oil, isooctyl oleate or oleyl oleate.
Preferably, the filler comprises one or more of copper nanoparticles or modified borate esters.
Preferably, the fiber is one or more of polyester fiber, polyamide fiber, polyvinyl alcohol fiber, polyacrylonitrile fiber, polypropylene fiber or polyvinyl chloride fiber.
Preferably, the lubricant is one or more of boron nitride, molybdenum disulfide, graphite, lithium-based grease, calcium-based grease, sodium-based grease, or titanium-based grease.
Preferably, the antioxidant is phenyl naphthylamine, butylated hydroxyanisole, 2, 6-di-tert-butylphenol, 2, 6-di-tert-butyl-p-cresol or 2,4, 6-tri-tert-butylphenol.
The invention also provides a preparation method of the high-stability sealing grease for the shield machine, which comprises the following steps:
step 1: adding base oil, organic bentonite, a lubricant and a flame retardant into a kneader and fully kneading for 0.5-1h to obtain a first sealing oil mixture;
step 2: adding a filler, a tackifier and an antioxidant into the first sealing oil mixture, and sufficiently kneading for 1-2h to generate a second sealing oil mixture;
and step 3: and adding fibers into the second sealing oil mixture, and sufficiently kneading for 1-1.5h to generate the high-stability sealing grease for the shield machine.
Preferably, the filler is prepared by the following method:
step 101: adding 1-hydroxymethyl benzotriazole, boric acid and lauryl alcohol into water at 90-100 ℃ according to the mass ratio of 2:1:3, and refluxing and stirring for 1-2h to obtain modified borate;
step 102: adding polyvinylpyrrolidone and ascorbic acid into water according to the mass ratio of 1:3, and continuously stirring to obtain a mixed solution;
step 103: heating the mixed solution to 80-90 ℃, and dropwise adding 1mol/L copper sulfate solution into the mixed solution to generate red precipitate;
step 104: and cleaning and drying the red precipitate to obtain the copper nanoparticles.
Preferably, the organobentonite is prepared by the following method:
step 201: adding water into the bentonite, continuously stirring and heating to 60-70 ℃ to generate first soil slurry;
step 202: adding a hexadecyl trimethyl ammonium chloride aqueous solution with the mass fraction of 15% into the first bentonite slurry, and preserving heat for 1-2 hours to generate second soil slurry;
step 203: filtering and drying the second slurry to generate bentonite particles;
step 204: adding dimethylbenzene into the bentonite particles and continuously stirring to generate bentonite suspension;
step 205: adding methanol into the bentonite suspension, and continuously stirring to generate the organic bentonite.
Preferably, the flame retardant is prepared by the following method:
step 301: adding diphenyl phosphine oxide and p-benzoquinone into water according to the mass ratio of 3:2 to obtain an organic mixed solution;
step 302: dripping toluene into the organic mixed solution, heating and stirring for 10-20h to obtain a reaction solution;
step 303: cooling the reaction liquid to room temperature and introducing nitrogen to obtain yellow precipitate;
step 304: drying the yellow precipitate, then melting the yellow precipitate into a sodium hydroxide solution, and continuously dropwise adding hydrochloric acid to separate out a white precipitate;
step 305: and filtering and drying the white precipitate, and then recrystallizing and drying the white precipitate by using ethanol to obtain the flame retardant.
The high-stability sealing grease for the shield machine and the preparation method thereof have the beneficial effects that: compared with the prior art, the high-stability sealing grease for the shield machine provided by the invention comprises the following components in percentage by mass: 10-40% of base oil, 20-30% of filler, 10-15% of organic bentonite, 10-23% of flame retardant, 8-12% of lubricant, 8-15% of tackifier, 2-6% of fiber and 1-7% of antioxidant. According to the invention, the organic bentonite is added into the sealing grease, so that the combination degree of each component in the sealing grease can be greatly improved, and the waterproof performance and the water-resistant sealing performance of the sealing grease are further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a process for preparing a filler according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a process for preparing organobentonite according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a process for preparing a flame retardant provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a combustion curve of a flame retardant according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention aims to provide high-stability sealing grease for a shield machine and a preparation method thereof, and aims to solve the problem that the existing sealing grease is poor in sealing performance.
In order to achieve the purpose, the invention adopts the technical scheme that: a high-stability sealing grease for a shield machine comprises the following components in percentage by mass: 10-40% of base oil, 20-30% of filler, 10-15% of organic bentonite, 10-23% of flame retardant, 8-12% of lubricant, 8-15% of tackifier, 2-6% of fiber and 1-7% of antioxidant.
Further, the base oil of the present invention may be selected from one or more of pentaerythritol oleate, castor oil, soybean oil, isooctyl oleate, or oleyl oleate. The filler can be one or more of copper nanoparticles or modified borate. Referring to fig. 1, the filler of the present invention is prepared by the following method:
step 101: adding 1-hydroxymethyl benzotriazole, boric acid and lauryl alcohol into water at 90-100 ℃ according to the mass ratio of 2:1:3, and refluxing and stirring for 1-2h to obtain modified borate; in practical application, toluene is required to be added as a water-carrying agent during reflux stirring so as to improve the reaction rate. The invention can also use cetyl alcohol or stearyl alcohol to replace lauryl alcohol to obtain another modified borate ester.
Step 102: adding polyvinylpyrrolidone and ascorbic acid into water according to the mass ratio of 1:3, and continuously stirring to obtain a mixed solution;
step 103: heating the mixed solution to 80-90 ℃, dropwise adding 1mol/L copper sulfate solution into the mixed solution, and continuously stirring to generate red precipitate;
step 104: and cleaning and drying the red precipitate to obtain the copper nanoparticles. Further, the method can use a centrifuge to obtain red precipitates, then uses deionized water and ethanol to respectively wash the red precipitates for 3 times, and then dries the washed red precipitates in a drying oven to obtain the copper nanoparticles.
According to the invention, the nano-scale filler is added into the sealing grease, so that the wear resistance of the sealing grease can be greatly improved.
In the embodiment of the invention, the fiber is one or more of polyester fiber, polyamide fiber, polyvinyl alcohol fiber, polyacrylonitrile fiber, polypropylene fiber or polyvinyl chloride fiber, and the length of the fiber material is 1-3 mm. The waterproof performance of the sealing grease can be improved by adding the fibers.
In an embodiment of the invention, the lubricant is one or more of boron nitride, molybdenum disulfide, graphite, a lithium-based grease, a calcium-based grease, a sodium-based grease, or a titanium-based grease. The antioxidant is phenyl naphthylamine, butylated hydroxyanisole, 2, 6-di-tert-butylphenol, 2, 6-di-tert-butyl-p-cresol or 2,4, 6-tri-tert-butylphenol.
Referring to fig. 2, the organobentonite according to the present invention is prepared by the following method:
step 201: adding water into the bentonite, continuously stirring and heating to 60-70 ℃ to generate first soil slurry;
in practical application, firstly, the bentonite raw ore needs to be subjected to sodium treatment; specifically, the rotation speed of the sodium treatment tank with the high-speed stirring device is set to be 300-350 r/min. Weighing a certain amount of bentonite raw ore, adding water to prepare a suspension with a certain concentration, adding a sodium treatment agent with the dosage of 4% of that of the bentonite raw ore, and fully dispersing the bentonite in the water by the mechanical strong stirring function of a sodium treatment tank and carrying out sodium treatment to obtain the treated bentonite. In the present invention, the sodium reagent is sodium carbonate.
Step 202: adding a hexadecyl trimethyl ammonium chloride aqueous solution with the mass fraction of 15% into the first bentonite slurry, and preserving the heat for 1-2 hours to generate second soil slurry;
step 203: filtering and drying the second soil slurry to generate bentonite particles;
step 204: adding dimethylbenzene into the bentonite particles and continuously stirring to generate bentonite suspension;
step 205: adding methanol into the bentonite suspension, and stirring to obtain organic bentonite.
According to the invention, firstly, sodium treatment is carried out on the bentonite raw ore, and then, organic matters such as hexadecyl trimethyl ammonium chloride, xylene and methanol are sequentially used for treating the bentonite, so that the particle diameter of the prepared organic bentonite is smaller, the stability of the sealing grease can be increased, the combination degree of all components in the sealing grease can be greatly improved, and the waterproofness of the sealing grease is further improved.
Furthermore, the invention can replace the organic bentonite with modified starch of any quality, generally, the more the modified starch is added, the viscosity of the sealing grease is improved, but the fire-proof performance is reduced, so the modified starch can be added according to the actual requirement. The preparation process of the modified starch comprises the following steps: preparing 0.05mol/L hydrochloric acid solution, adding starch into the prepared hydrochloric acid solution to obtain starch milk with the mass fraction of 40%, and stirring for 6 hours in an oil bath pan at 50 ℃. After stirring, adjusting the pH of the starch milk to 5.5 by using 0.1mol/L sodium hydroxide solution, performing vacuum filtration by using a water pump, washing for three times, then performing vacuum filtration, and finally performing freeze drying treatment for 28-36 hours by using a freeze dryer to obtain the modified starch. The starch is preferably sago starch, wherein sago starch is starch with ellipsoidal particles, small average particle size, C-shaped crystalline structure and high gelatinization temperature, and the sago starch particles are smaller, better in fluidity and higher in heat paste stability after being subjected to acid and oil modification treatment.
Referring to fig. 3, the flame retardant of the present invention is prepared by the following method:
step 301: adding diphenyl phosphine oxide and p-benzoquinone into water according to the mass ratio of 3:2 to obtain an organic mixed solution;
step 302: dripping toluene into the organic mixed solution, heating and stirring for 10-20h to obtain a reaction solution;
step 303: cooling the reaction liquid to room temperature and introducing nitrogen to obtain yellow precipitate;
step 304: drying the yellow precipitate, then adding the yellow precipitate into a sodium hydroxide solution, and continuously dropwise adding hydrochloric acid to separate out a white precipitate;
step 305: filtering and drying the white precipitate, and then recrystallizing and drying the white precipitate by using ethanol to obtain the flame retardant; further, after the white precipitate is recrystallized by using ethanol, the flame retardant is finally obtained after vacuum drying at 80 ℃.
FIG. 4 is a TGA (Thermogravimetric Analysis) curve and a DTG curve illustrating the flame retardant of the present invention. It can be seen from fig. 4 that the initial degradation temperature of the flame retardant is 252.8 ℃, and the residual carbon content at 700 ℃ is 4.4 wt%, which indicates that the flame retardant has relatively strong thermal stability, so that the flame retardant is not easily decomposed at high temperature, and the fire resistance of the sealing grease can be greatly improved by adding the flame retardant to the sealing grease.
The invention also provides a preparation method of the high-stability sealing grease for the shield machine, which comprises the following steps:
step 1: adding base oil, organic bentonite, a lubricant and a flame retardant into a kneader and fully kneading for 0.5-1h to obtain a first sealing oil mixture;
step 2: adding a filler, a tackifier and an antioxidant into the first sealing oil mixture, and fully kneading for 1-2h to generate a second sealing oil mixture;
and step 3: and adding fibers into the second sealing oil mixture, and sufficiently kneading for 1-1.5h to generate the high-stability sealing grease for the shield machine.
According to the invention, the high-stability sealing grease is obtained by fully kneading the base oil, the organic bentonite, the lubricant, the filler, the tackifier, the fiber and other compositions by using the kneading machine, so that the combination degree of each component in the sealing grease is greatly improved, and the product quality is further improved.
The invention discloses a high-stability sealing grease for a shield machine and a preparation method thereof, and the high-stability sealing grease has the beneficial effects that: compared with the prior art, the high-stability sealing grease for the shield machine provided by the invention comprises the following components in percentage by mass: 10-40% of base oil, 20-30% of filler, 10-15% of organic bentonite, 10-23% of flame retardant, 8-12% of lubricant, 8-15% of tackifier, 2-6% of fiber and 1-7% of antioxidant. According to the invention, the organic bentonite is added into the sealing grease, so that the combination degree of each component in the sealing grease can be greatly improved, and the waterproof performance and the water-resistant sealing performance of the sealing grease are further improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The high-stability sealing grease for the shield machine is characterized by comprising the following components in percentage by mass: 10-40% of base oil, 20-30% of filler, 10-15% of organic bentonite, 10-23% of flame retardant, 8-12% of lubricant, 8-15% of tackifier, 2-6% of fiber and 1-7% of antioxidant.
2. The high-stability sealing grease for the shield tunneling machine according to claim 1, wherein: the base oil is one or more of pentaerythritol oleate, castor oil, soybean oil, isooctyl oleate or oleyl oleate.
3. The high-stability sealing grease for the shield tunneling machine according to claim 2, wherein: the filler includes one or more of copper nanoparticles or modified borate esters.
4. The high-stability sealing grease for the shield tunneling machine according to claim 3, wherein the fibers are one or more of polyester fibers, polyamide fibers, polyvinyl alcohol fibers, polyacrylonitrile fibers, polypropylene fibers or polyvinyl chloride fibers.
5. The high stability seal grease for the shield machine of claim 4, wherein the lubricant is one or more of boron nitride, molybdenum disulfide, graphite, lithium-based grease, calcium-based grease, sodium-based grease, or titanium-based grease.
6. The high-stability sealing grease for the shield tunneling machine as claimed in claim 5, wherein the antioxidant is phenyl naphthylamine, butylated hydroxyanisole, 2, 6-di-tert-butyl phenol, 2, 6-di-tert-butyl-p-cresol or 2,4, 6-tri-tert-butyl phenol.
7. A preparation method of high-stability sealing grease for a shield machine is characterized by comprising the following steps:
step 1: adding base oil, organic bentonite, a lubricant and a flame retardant into a kneader and fully kneading for 0.5-1h to obtain a first sealing oil mixture;
step 2: adding a filler, a tackifier and an antioxidant into the first sealing oil mixture, and fully kneading for 1-2h to generate a second sealing oil mixture;
and 3, step 3: and adding fibers into the second sealing oil mixture, and sufficiently kneading for 1-1.5h to generate the high-stability sealing grease for the shield machine.
8. The preparation method of the high-stability sealing grease for the shield tunneling machine according to claim 7, wherein the filler is prepared by the following method:
step 101: adding 1-hydroxymethyl benzotriazole, boric acid and lauryl alcohol into water at 90-100 ℃ according to the mass ratio of 2:1:3, and refluxing and stirring for 1-2h to obtain modified borate;
step 102: adding polyvinylpyrrolidone and ascorbic acid into water according to the mass ratio of 1:3, and continuously stirring to obtain a mixed solution;
step 103: heating the mixed solution to 80-90 ℃, and dropwise adding 1mol/L copper sulfate solution into the mixed solution to generate red precipitate;
step 104: and cleaning and drying the red precipitate to obtain the copper nanoparticles.
9. The method for preparing the high-stability sealing grease for the shield tunneling machine according to claim 7, wherein the organic bentonite is prepared by the following method:
step 201: adding water into the bentonite, continuously stirring and heating to 60-70 ℃ to generate first soil slurry;
step 202: adding a hexadecyl trimethyl ammonium chloride aqueous solution with the mass fraction of 15% into the first bentonite slurry, and preserving heat for 1-2 hours to generate second soil slurry;
step 203: filtering and drying the second slurry to generate bentonite particles;
step 204: adding dimethylbenzene into the bentonite particles and continuously stirring to generate bentonite suspension;
step 205: adding methanol into the bentonite suspension, and continuously stirring to generate the organic bentonite.
10. The method for preparing the high-stability sealing grease for the shield tunneling machine according to claim 7, wherein the flame retardant is prepared by the following method:
step 301: adding diphenyl phosphine oxide and p-benzoquinone into water according to the mass ratio of 3:2 to obtain an organic mixed solution;
step 302: dripping toluene into the organic mixed solution, heating and stirring for 10-20h to obtain a reaction solution;
step 303: cooling the reaction liquid to room temperature and introducing nitrogen to obtain yellow precipitate;
step 304: drying the yellow precipitate, then melting the yellow precipitate into a sodium hydroxide solution, and continuously dropwise adding hydrochloric acid to separate out a white precipitate;
step 305: and filtering and drying the white precipitate, and then recrystallizing and drying the white precipitate by using ethanol to obtain the flame retardant.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641794A (en) * | 2018-06-21 | 2018-10-12 | 中铁第五勘察设计院集团有限公司 | A kind of special main shaft seals grease of shield machine and preparation method and applications |
| CN113308211A (en) * | 2021-06-09 | 2021-08-27 | 深圳市迈德尔贸易有限公司 | Preparation process of high-molecular structure adhesive liquid for segmental assembling bridge |
-
2022
- 2022-02-17 CN CN202210144281.2A patent/CN114507557B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641794A (en) * | 2018-06-21 | 2018-10-12 | 中铁第五勘察设计院集团有限公司 | A kind of special main shaft seals grease of shield machine and preparation method and applications |
| CN113308211A (en) * | 2021-06-09 | 2021-08-27 | 深圳市迈德尔贸易有限公司 | Preparation process of high-molecular structure adhesive liquid for segmental assembling bridge |
Non-Patent Citations (2)
| Title |
|---|
| 张萌等: "采用抗坏血酸液相还原法制备微纳米铜粉", 《中国有色金属学报》 * |
| 柴多里等: "含氮杂环硼酸酯的合成及其摩擦学性能", 《润滑与密封》 * |
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| Publication number | Publication date |
|---|---|
| CN114507557B (en) | 2023-11-03 |
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