CN116120566A - High-bearing polymer-based water lubrication modified material and preparation method thereof - Google Patents
High-bearing polymer-based water lubrication modified material and preparation method thereof Download PDFInfo
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- CN116120566A CN116120566A CN202111350885.4A CN202111350885A CN116120566A CN 116120566 A CN116120566 A CN 116120566A CN 202111350885 A CN202111350885 A CN 202111350885A CN 116120566 A CN116120566 A CN 116120566A
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- 239000000463 material Substances 0.000 title claims abstract description 77
- 229920000642 polymer Polymers 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005461 lubrication Methods 0.000 title abstract description 24
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 30
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002861 polymer material Substances 0.000 claims abstract description 15
- 229960003638 dopamine Drugs 0.000 claims abstract description 13
- 238000011065 in-situ storage Methods 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 15
- 229920006260 polyaryletherketone Polymers 0.000 claims description 15
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims description 10
- 229920000110 poly(aryl ether sulfone) Polymers 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 239000004642 Polyimide Substances 0.000 claims description 8
- 229920001721 polyimide Polymers 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 6
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 6
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 6
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 6
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 6
- 239000004693 Polybenzimidazole Substances 0.000 claims description 5
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- 229920002480 polybenzimidazole Polymers 0.000 claims description 5
- 125000001255 4-fluorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1F 0.000 claims description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- UKJLNMAFNRKWGR-UHFFFAOYSA-N cyclohexatrienamine Chemical group NC1=CC=C=C[CH]1 UKJLNMAFNRKWGR-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 claims description 4
- 125000000636 p-nitrophenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)[N+]([O-])=O 0.000 claims description 4
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 2
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 4
- 239000000706 filtrate Substances 0.000 description 14
- 229920000459 Nitrile rubber Polymers 0.000 description 11
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 229960001149 dopamine hydrochloride Drugs 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- 125000004203 4-hydroxyphenyl group Chemical group [H]OC1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 6
- 229920006351 engineering plastic Polymers 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 229930185605 Bisphenol Natural products 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical compound OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 description 2
- RZAVMTCGIWKQJA-UHFFFAOYSA-N 3-(4-hydroxyphenyl)-3h-2-benzofuran-1-one Chemical compound C1=CC(O)=CC=C1C1C2=CC=CC=C2C(=O)O1 RZAVMTCGIWKQJA-UHFFFAOYSA-N 0.000 description 2
- NZGQHKSLKRFZFL-UHFFFAOYSA-N 4-(4-hydroxyphenoxy)phenol Chemical compound C1=CC(O)=CC=C1OC1=CC=C(O)C=C1 NZGQHKSLKRFZFL-UHFFFAOYSA-N 0.000 description 2
- GIXNHONPKYUROG-UHFFFAOYSA-N 4-(9h-fluoren-1-yl)phenol Chemical compound C1=CC(O)=CC=C1C1=CC=CC2=C1CC1=CC=CC=C12 GIXNHONPKYUROG-UHFFFAOYSA-N 0.000 description 2
- GWPGDZPXOZATKL-UHFFFAOYSA-N 9h-carbazol-2-ol Chemical compound C1=CC=C2C3=CC=C(O)C=C3NC2=C1 GWPGDZPXOZATKL-UHFFFAOYSA-N 0.000 description 2
- ZIKXHZSORLSPCO-UHFFFAOYSA-N 9h-carbazol-3-ol Chemical compound C1=CC=C2C3=CC(O)=CC=C3NC2=C1 ZIKXHZSORLSPCO-UHFFFAOYSA-N 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- PXZQEOJJUGGUIB-UHFFFAOYSA-N isoindolin-1-one Chemical compound C1=CC=C2C(=O)NCC2=C1 PXZQEOJJUGGUIB-UHFFFAOYSA-N 0.000 description 2
- 238000010534 nucleophilic substitution reaction Methods 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 150000003457 sulfones Chemical class 0.000 description 2
- NDXGRHCEHPFUSU-UHFFFAOYSA-N 3-(3-aminophenyl)aniline Chemical group NC1=CC=CC(C=2C=C(N)C=CC=2)=C1 NDXGRHCEHPFUSU-UHFFFAOYSA-N 0.000 description 1
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- FHESUNXRPBHDQM-UHFFFAOYSA-N diphenyl benzene-1,3-dicarboxylate Chemical compound C=1C=CC(C(=O)OC=2C=CC=CC=2)=CC=1C(=O)OC1=CC=CC=C1 FHESUNXRPBHDQM-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 125000006158 tetracarboxylic acid group Chemical group 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
-
- 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
- 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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/38—Lubricating compositions characterised by the base-material being a macromolecular compound containing halogen
-
- 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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/40—Lubricating compositions characterised by the base-material being a macromolecular compound containing nitrogen
- C10M107/44—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/46—Lubricating compositions characterised by the base-material being a macromolecular compound containing sulfur
-
- 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
- C10M2217/041—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds involving a condensation reaction
- C10M2217/0415—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds involving a condensation reaction used as base material
-
- 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/003—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions used as base material
-
- 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/0406—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides used as base material
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The application discloses a high-load polymer-based water lubrication modified material and a preparation method thereof, belonging to the field of high-molecular composite materials. The modified material is prepared by in-situ polymerization of dopamine on the surface of a high-load-bearing polymer material. The modified material has good compatibility with other high-molecular lubricating materials, organic matters and inorganic matters, can effectively improve the bearing capacity of a polymer-based water-lubricated bearing such as rubber and optimize the friction performance, can be used for modifying composite materials in the field of water-lubricated bearings such as mechanical pumps and ship tail bearings, is particularly suitable for high-load water-lubricated bearing materials, can greatly reduce the bearing size and improve the material strength.
Description
Technical Field
The application relates to a water lubrication modified material and a preparation method thereof, belonging to the field of polymer composite materials.
Background
The water lubrication bearing can be directly used in water without any sealing device, and has the characteristics of low cost, convenient installation and maintenance and the like. The bearing is lubricated by water, does not need lubricating oil or lubricating grease, is environment-friendly and pollution-free, and has good protection effect on ecological environment. The bearing is usually used in running water, can effectively control the temperature rise of the bearing, and has long service life, safety and reliability.
The viscosity of water is extremely low, a water film is not easy to form, fluid lubrication is difficult to obtain, and the situation is particularly obvious when the bearing is started and stopped. There are therefore a number of forms of friction in water lubricated bearings: dry friction, fluid lubrication, boundary lubrication, hybrid lubrication, and the like. Common water lubricating materials such as rubber and the like have limited bearing capacity; the bearing is easy to wear and even burn due to dry friction when started or at low rotation speed, and the friction performance of the bearing is to be perfected.
The high strength, self-lubrication, abrasion resistance, hydrolysis resistance and other characteristics of high-performance special engineering plastics such as polyaryletherketone, polyarylethersulfone, polyimide and the like make the high-performance special engineering plastics become the first-choice material for modifying the high-load water-lubricated bearing, but the water friction coefficient of the high-load water-lubricated bearing is often higher, and the interaction with other polymer interfaces is weaker, so that the application of the special engineering plastics in the field of the water-lubricated bearing is limited. At present, the tribology report of the material is less, related patents such as IN201911015109-A and the like mainly focus on how to compound a solid lubricant to improve the dry friction performance of polyether ether ketone (PEEK), and the study on the water lubrication performance of polyarylether ketone, polyarylether sulfone, polyimide and the like is lacking.
Disclosure of Invention
The invention provides a high-bearing polymer-based water lubrication modified material and a preparation method thereof, aiming at the defects, and the modified material has the advantages of high bearing and high water lubricity.
According to one aspect of the invention, a polymer-based modified material is provided, which is prepared by polymerizing dopamine on a polymer material by an in-situ polymerization method by taking the polymer material as a matrix;
the mass ratio of the polymer material to the dopamine is 100 (1-50).
Optionally, the mass fraction ratio of the polymer material to the dopamine is 100:5, 100:10, 100:15, 100:20, 100:25, 100:30, 100:35, 100:40, 100:45, or any value between any two points.
Optionally, the water friction coefficient of the polymer-based modified material is 0.03-0.30 under the conditions of 0.5-10 m/s and 0.01-10 MPa;
the high polymer material is at least one selected from polyaryletherketone, polyarylethersulfone, polyimide, polybenzimidazole, polyphenylene sulfide, polytetrafluoroethylene and ultra-high molecular weight polyethylene, and the compression strength of the high polymer material is more than or equal to 100MPa.
Alternatively, the polyaryletherketone is a crystalline polymer or blend thereof having phenylene rings linked by an ether linkage and a carbonyl group. Many different polymers can be formed according to the different connection sequence and proportion of ether bond, ketone group and benzene ring in the molecular chain.
The polyaryletherketone is at least one of structures shown in formulas 1, 2,3,4 and 5:
wherein n is 1 ≥10，n 2 ≥10，n 3 ≥10，n 4 ≥10，n 5 ≥10。
Optionally, the polyaryletherketone also includes amorphous polyaryletherketones containing large pendant groups and blends thereof, such as phenolphthalein based polyaryletherketone (PEK-C), and the like.
The polyaryletherketone is at least one of structures shown in formulas 6, 7 and 8:
wherein n is 6 ≥10，n 7 +m 1 ≥10，n 8 +m 2 ≥10
said-Ar 1 -、-Ar 1 The' -structure is monomer H-Ar 1 -H or monomer H-Ar 1 ' -H with a residue after nucleophilic substitution of a ketone-containing monomer. H-Ar 1 -H or H-Ar 1 The' -H structure is independently selected from the group consisting of phenolphthalein, 4' -dihydroxybiphenyl, 4' -dihydroxybenzophenone, 4' -dihydroxydiphenyl sulfone 4,4' -dihydroxydiphenyl ether, 4' -dihydroxydiphenyl sulfide, 2-bis (4-hydroxyphenyl) propane 4,4' - (hexafluoroisopropylidene) bisphenol, 4' - (1, 4-phenylenediisopropyl) diphenol, 3-bis (4-hydroxyphenyl) -1 (3H) -isobenzofuranone, 3' -bis (4-hydroxyphenyl) phthalimidine one of the structures 6- (2-hydroxyphenyl) -piperazin-3- (6H) -one, 6- (4-hydroxyphenyl) -piperazin-3- (6H) -one, 4- (4-hydroxyphenyl) -2, 3-naphthyridonene, 2-hydroxycarbazole, 3-hydroxycarbazole, 9-bis (4-hydroxyphenyl) fluorene, 6, 13-ditropylenediphenol, 2, 5-triptycenediphenol, 5' -bis (2-4- (hydroxyphenyl) -benzimidazole), 2, 6-bis (4-hydroxyphenoxy) -4' - (2, 3,4,5, 6-pentafluorophenyl) benzophenone.
The Ar is as follows 1 "one selected from structures represented by formula 9 and formula 10:
wherein A is 1 And A is a 2 Each independently is S or O; r is R 1 And R is R 2 Each independently selected from H, NH 2 、NO 2 Or C 1 ～C 5 One of the alkyl groups of (a); r is R 3 And R is R 4 Each independently selected from one of H, phenyl, 4-fluorophenyl, 4-chlorophenyl, 4-aminophenyl or 4-nitrophenyl.
Optionally, the polyarylethersulfones include homopolymerized and copolymerized modified resins. The material has a glass transition temperature without a melting point, and the glass transition temperature Tg is in the range of 190-350 ℃.
The polyarylethersulfone is at least one of structures shown in formulas 11 and 12:
formula 12 represents an amorphous poly (arylene ether sulfone) copolymer, wherein Y is a sulfone group or a carbonyl group, n 9 +m 3 ≥10，n 10 +m 4 ≥10；
Ar 2 With Ar 2 The' structures may be the same or different. -O-Ar 2 -O-and-O-Ar 2 ' -O-is bisphenol monomer HO-Ar 2 -OH and HO-Ar 2 Residue after nucleophilic substitution of' -OH and sulfonyl-containing monomer. HO-Ar 2 -OH and HO-Ar 2 The' -OH structure is independently selected from hydroquinone, 4' -dihydroxybiphenyl, 4' -dihydroxybenzophenone, 4' -dihydroxydiphenyl sulfone 4,4' -dihydroxydiphenyl ether, 4' -dihydroxydiphenyl sulfide, 2-bis (4-hydroxyphenyl) propane 4,4' - (hexafluoroisopropylidene) bisphenol, 4' - (1, 4-phenylenediisopropyl) diphenol, 3-bis (4-hydroxyphenyl) -1 (3H) -isobenzofuranone, 3' -bis (4-hydroxyphenyl) phthalimidine one of the structures 6- (2-hydroxyphenyl) -piperazin-3- (6H) -one, 6- (4-hydroxyphenyl) -piperazin-3- (6H) -one, 4- (4-hydroxyphenyl) -2, 3-naphthyridonene, 2-hydroxycarbazole, 3-hydroxycarbazole, 9-bis (4-hydroxyphenyl) fluorene, 6, 13-ditropylenediphenol, 2, 5-triptycenediphenol, 5' -bis (2-4- (hydroxyphenyl) -benzimidazole), 2, 6-bis (4-hydroxyphenoxy) -4' - (2, 3,4,5, 6-pentafluorophenyl) benzophenone.
The Ar is as follows 2 "one selected from structures represented by formula 9 and formula 10:
wherein A is 1 And A is a 2 Each independently is S or O; r is R 1 And R is R 2 Each independently selected from H, NH 2 、NO 2 Or C 1 ～C 5 One of the alkyl groups of (a); r is R 3 And R is R 4 Each independently selected from one of H, phenyl, 4-fluorophenyl, 4-chlorophenyl, 4-aminophenyl, 4-nitrophenyl.
Alternatively, the polyimide has the general formula 13:
wherein n is 11 ≥5，R 5 And R is 6 Independently selected from one of formula a, formula b, formula c;
the formula of the polybenzimidazole is shown in formula 14:
wherein R is 7 Selected from C 0 ～C 6 One of alkyl carbon chain, oxygen atom, carbonyl and sulfonyl, B is aromatic ring structure, n 12 ≥5；
The number average molecular mass of the polyphenylene sulfide is more than or equal to 5500;
the number average molecular weight of the ultra-high molecular weight polyethylene is more than or equal to 1000000.
According to one aspect of the present invention, there is provided a method for preparing the above polymer-based modified material, comprising the steps of:
and (3) carrying out polymerization reaction on the alkaline aqueous solution containing the high polymer material and dopamine at the temperature of 20-120 ℃ and the stirring rate of 10-500 r/min to obtain the polymer-based modified material.
Optionally, the mass ratio of the high polymer material to the dopamine is 100 (1-50);
the alkaline aqueous solution contains an alkaline compound, wherein the alkaline compound is at least one selected from sodium hydroxide, quaternary ammonium bases and tris (hydroxymethyl) aminomethane;
the concentration of the alkaline compound in the alkaline aqueous solution is 0.001-0.50 mol/L, the concentration of the dopamine is 0.001-0.50 mol/L, and the pH value of the alkaline aqueous solution is more than or equal to 7.
Alternatively, the polymerization time of the polymerization reaction is 1 to 48 hours.
In accordance with one aspect of the present invention, there is provided a polymer-based modified material as described above, and the use of the polymer-based modified material as produced by the above-described production method as a lubricant.
Alternatively, the polymer-based modifying material is used as a lubricant in the field of bearings.
The modified material takes one or more of high-strength self-lubricating polyaryletherketone, polyarylethersulfone, polyimide and other high-performance special engineering plastics as a matrix, so that the bearing capacity of the water-lubricated bearing material can be improved, and the dry friction performance of the water-lubricated bearing material can be improved. The compatibility of the special engineering plastic and other components can be increased by polymerizing the dopamine on the surface of the matrix material, and meanwhile, the polydopamine has hydrophilicity and can improve the water lubricating property of the modified material.
The beneficial effects are that:
(1) The water lubrication modified material provided by the application has high load characteristics, and the compression strength is more than or equal to 185MPa;
(2) The water lubrication modified material provided by the application has the characteristic of low water friction coefficient, and the water friction coefficient is as low as 0.08 under the conditions of 2.24m/s and 0.28 MPa.
(3) The modified material has good compatibility with other high polymer materials, organic matters and inorganic matters, and can effectively improve the bearing capacity of the polymer-based water-lubricated bearing such as rubber and optimize the friction performance of the bearing.
(4) The modified material provided by the application can be used for modifying composite materials in the field of water lubrication bearings such as mechanical pumps and ship tail bearings, is particularly suitable for high-load water lubrication bearing materials, can greatly reduce the size of the bearing and improve the strength of the material.
Detailed Description
The present application is described in detail below with reference to examples, but the present application is not limited to these examples.
Example 1
The preparation process of the high-bearing polymer-based water lubrication modified material comprises the following steps:
(1) Weighing 100 parts by mass of polyarylethersulfone (PESU, number average molecular weight 60 kDa), and transferring the 100 parts by mass of polyarylethersulfone into a tris (hydroxymethyl) aminomethane aqueous solution (0.12M) dissolved with 10 parts of dopamine hydrochloride;
(2) The polymerization temperature is 30 ℃, the stirring speed is 100r/min, and the polymerization time is 6h;
(3) And after polymerization, washing the polymer-based modified material by using deionized water until the filtrate is neutral, and transferring the filtrate into a blast oven at 110 ℃ for drying to obtain the polymer-based modified material.
Example 2
The preparation process of the high-bearing polymer-based water lubrication modified material comprises the following steps:
(1) Weighing 4,4' -diaminodiphenyl ether/3, 3', 4' -diphenyl ether tetracarboxylic dianhydride type polyimide (number average molecular weight 2.5 multiplied by 10) 5 ) Then transfer it to an aqueous solution of tris (hydroxymethyl) aminomethane (0.05M) in 8 parts dopamine hydrochloride;
(2) The polymerization temperature is 30 ℃, the stirring speed is 100r/min, and the polymerization time is 3 hours;
(3) And after polymerization, washing the polymer-based modified material by using deionized water until the filtrate is neutral, and transferring the filtrate into a blast oven at 110 ℃ for drying to obtain the polymer-based modified material.
Example 3
The preparation process of the high-bearing polymer-based water lubrication modified material comprises the following steps:
(1) Weighing 100 parts of ultra-high molecular weight polyethylene (the number average molecular weight is more than or equal to 1000000) according to the parts by weight, transferring the ultra-high molecular weight polyethylene into a sodium hydroxide aqueous solution in which 8 parts of dopamine hydrochloride are dissolved, and keeping the PH approximately equal to 8.5;
(2) Polymerization temperature 60 ℃, stirring speed 150r/min and polymerization time 6h;
(3) And after polymerization, washing the polymer-based modified material by using deionized water until the filtrate is neutral, and transferring the filtrate into a blast oven at 110 ℃ for drying to obtain the polymer-based modified material.
Example 4
The preparation process of the high-bearing polymer-based water lubrication modified material comprises the following steps:
(1) Weighing 3,3' -diaminobiphenyl/diphenyl isophthalate polycondensed polybenzimidazole (number average molecular weight 2.5X10) 5 ) 100 parts, which were then transferred to an aqueous solution of tris (hydroxymethyl) aminomethane (0.20M) in 15 parts dopamine hydrochloride;
(2) Polymerization temperature 80 ℃, stirring speed 200r/min and polymerization time 12h;
(3) And after polymerization, washing the polymer-based modified material by using deionized water until the filtrate is neutral, and transferring the filtrate into a blast oven at 110 ℃ for drying to obtain the polymer-based modified material.
Example 5
The preparation process of the high-bearing polymer-based water lubrication modified material comprises the following steps:
(1) Weighing 100 parts by mass of phenolphthalein-based polyaryletherketone material, and transferring the phenolphthalein-based polyaryletherketone material into a tris (hydroxymethyl) aminomethane aqueous solution (0.12M) in which 5 parts of dopamine hydrochloride are dissolved;
(2) Polymerization temperature 80 ℃, stirring speed 200r/min and polymerization time 12h;
(3) And after polymerization, washing the polymer-based modified material by using deionized water until the filtrate is neutral, and transferring the filtrate into a blast oven at 110 ℃ for drying to obtain the polymer-based modified material.
Example 6
The preparation process of the high-bearing polymer-based water lubrication modified material comprises the following steps:
(1) Weighing 100 parts by mass of polyphenylene sulfide (number average molecular weight 10000), transferring the polyphenylene sulfide into a sodium hydroxide aqueous solution containing 8 parts of dopamine hydrochloride, and keeping the PH approximately equal to 8.5;
(2) Polymerization temperature 60 ℃, stirring speed 150r/min and polymerization time 6h;
(3) And after polymerization, washing the polymer-based modified material by using deionized water until the filtrate is neutral, and transferring the filtrate into a blast oven at 110 ℃ for drying to obtain the polymer-based modified material.
Example 7
The preparation process of the high-bearing polymer-based water lubrication modified material comprises the following steps:
(1) Polytetrafluoroethylene (number average molecular weight 1.5X10) is weighed according to parts by weight 6 ) 100 parts, then transferring the mixture into a sodium hydroxide aqueous solution containing 8 parts of dopamine hydrochloride, and keeping the PH approximately equal to 8.5;
(2) Polymerization temperature 60 ℃, stirring speed 150r/min and polymerization time 6h;
(3) And after polymerization, washing the polymer-based modified material by using deionized water until the filtrate is neutral, and transferring the filtrate into a blast oven at 110 ℃ for drying to obtain the polymer-based modified material.
EXAMPLE 8 modified nitrile rubber
(1) Weighing 20 parts of polymer-based modified material and 100 parts of nitrile rubber in example 5;
(2) Firstly, putting nitrile rubber between rolls of an open mill or an internal mixer, and mixing at 50 ℃ to ensure that the nitrile rubber is covered with the rolls. Next, a polymer-based modifier is added. Finally, the mixed rubber is thinned and discharged out of the sheet to obtain sizing material;
(3) And (3) putting the rubber material into a mold for hot press molding, wherein the mold pressing temperature is 160 ℃, the pressure is 5MPa, and the heat preservation and the pressure maintaining are carried out for 30 minutes, so that the modified nitrile rubber is obtained.
Test case Performance test
The polymer-based modified materials prepared in examples 1 to 7, the modified nitrile rubber prepared in example 8, and the tribological properties of the nitrile rubber were measured by the following methods, and the results are shown in table 1 below. Wherein, the nitrile rubber is purchased from Lanzhou chemical industry company, and the acrylonitrile amount is 17-25%.
(1) According to GBT12444-2006, the friction performance between the friction material and the friction pair is measured by using a test ring-test block type abrasion experiment device under the conditions of 2.24m/s and 66N;
(2) According to GBT 1041-2008, a dynamic thermo-mechanical analysis tester is used to characterize the compression properties of a material;
TABLE 1 high load Polymer based Water lubrication modified Material, modified nitrile rubber, friction Properties of nitrile rubber (2.24 m/s,0.28 MPa)
| Coefficient of dry friction | Coefficient of water friction | Compressive strength MPa | |
| Example 1 | 0.25 | 0.09 | 210 |
| Example 2 | 0.28 | 0.11 | 235 |
| Example 3 | 0.09 | 0.08 | 200 |
| Example 4 | 0.24 | 0.09 | 350 |
| Example 5 | 0.25 | 0.08 | 185 |
| Example 6 | 0.26 | 0.08 | 200 |
| Example 7 | 0.15 | 0.06 | 120 |
| Example 8 | 0.43 | 0.07 | 5 |
| Nitrile rubber | 0.54 | 0.05 | 2.5 |
The foregoing description is only a few examples of the present application and is not intended to limit the present application in any way, and although the present application is disclosed in the preferred examples, it is not intended to limit the present application, and any person skilled in the art may make some changes or modifications to the disclosed technology without departing from the scope of the technical solution of the present application, and the technical solution is equivalent to the equivalent embodiments.
Claims (10)
1. The polymer-based modified material is characterized in that the polymer-based modified material is prepared by polymerizing dopamine on a polymer material serving as a matrix by adopting an in-situ polymerization method; the mass ratio of the high polymer material to the dopamine is 100 (1-50).
2. The polymer-based modified material according to claim 1, wherein the polymer-based modified material has a water friction coefficient of 0.03 to 0.30 under a condition of 0.5 to 10m/s and 0.01 to 10 MPa;
the high polymer material is at least one selected from polyaryletherketone, polyarylethersulfone, polyimide, polybenzimidazole, polyphenylene sulfide, polytetrafluoroethylene and ultra-high molecular weight polyethylene, and the compression strength of the high polymer material is more than or equal to 100MPa.
3. The polymer-based modified material according to claim 2, wherein the polyaryletherketone is selected from at least one of structures represented by formula 1, formula 2, formula 3, formula 4, and formula 5:
wherein n is 1 ≥10，n 2 ≥10，n 3 ≥10，n 4 ≥10，n 5 ≥10。
4. The polymer-based modified material according to claim 2, wherein the polyaryletherketone is selected from at least one of structures represented by formula 6, formula 7, and formula 8:
wherein n is 6 ≥10，n 7 +m 1 ≥10，n 8 +m 2 ≥10
The Ar is as follows 1 、Ar 1 ' independently selected from one of phenolphthalein, 4' -dihydroxybiphenyl, 4' -dihydroxybenzophenone;
the Ar is as follows 1 "one selected from structures represented by formula 9 and formula 10:
wherein A is 1 And A is a 2 Each independently is S or O; r is R 1 And R is R 2 Each independently selected from H, NH 2 、NO 2 Or C 1 ～C 5 One of the alkyl groups of (a); r is R 3 And R is R 4 Each independently selected from one of H, phenyl, 4-fluorophenyl, 4-chlorophenyl, 4-aminophenyl or 4-nitrophenyl.
5. The polymer-based modified material according to claim 2, wherein the polyarylethersulfone is at least one selected from the structures represented by formula 11 and formula 12:
the Y is sulfonyl or carbonyl, n 9 +m 3 ≥10，n 10 +m 4 ≥10；
The Ar is as follows 2 、Ar 2 'independently selected from one of hydroquinone, 4' -dihydroxybiphenyl, 4 '-dihydroxybenzophenone, or 4,4' -dihydroxydiphenyl sulfone;
the Ar is as follows 2 "one selected from structures represented by formula 9 and formula 10:
wherein A is 1 And A is a 2 Each independently is S or O; r is R 1 And R is R 2 Each independently selected from H, NH 2 、NO 2 Or C 1 ～C 5 One of the alkyl groups of (a); r is R 3 And R is R 4 Each independently selected from one of H, phenyl, 4-fluorophenyl, 4-chlorophenyl, 4-aminophenyl, 4-nitrophenyl.
6. The polymer-based modified material of claim 2, wherein the polyimide has the formula 13:
wherein n is 11 ≥5，R 5 And R is 6 Independently selected from one of formula a, formula b, formula c;
the formula of the polybenzimidazole is shown in formula 14:
wherein R is 7 Selected from C 0 ～C 6 One of alkyl carbon chain, oxygen atom, carbonyl and sulfonyl, B is aromatic ring structure, n 12 ≥5
The number average molecular mass of the polyphenylene sulfide is more than or equal to 5500;
the number average molecular weight of the ultra-high molecular weight polyethylene is more than or equal to 1000000.
7. A method for producing the polymer-based modified material according to any one of claims 1 to 6, characterized by comprising the steps of:
and (3) carrying out polymerization reaction on the alkaline aqueous solution containing the high polymer material and dopamine at the temperature of 20-120 ℃ and the stirring rate of 10-500 r/min to obtain the polymer-based modified material.
8. The preparation method of the polymer-based modified material according to claim 7, wherein the mass ratio of the high molecular material to the dopamine is 100 (1-50);
the alkaline aqueous solution contains an alkaline compound, wherein the alkaline compound is at least one selected from sodium hydroxide, quaternary ammonium bases and tris (hydroxymethyl) aminomethane;
the concentration of the alkaline compound in the alkaline aqueous solution is 0.001-0.50 mol/L, the concentration of the dopamine is 0.001-0.50 mol/L, and the pH value of the alkaline aqueous solution is more than or equal to 7.
9. The method for producing a polymer-based modified material according to claim 7, wherein the polymerization time of the polymerization reaction is 1 to 48 hours.
10. Use of the polymer-based modified material according to any one of claims 1 to 6, the polymer-based modified material produced by the production method according to any one of claims 7 to 9 as a lubricant;
preferably, the polymer-based modified material is used as a lubricant in the field of bearings.
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