CN116285559B - Water-based preservative applied to neodymium-iron-boron chamfering corrosion prevention and preparation method thereof - Google Patents
Water-based preservative applied to neodymium-iron-boron chamfering corrosion prevention and preparation method thereof Download PDFInfo
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- CN116285559B CN116285559B CN202310403077.2A CN202310403077A CN116285559B CN 116285559 B CN116285559 B CN 116285559B CN 202310403077 A CN202310403077 A CN 202310403077A CN 116285559 B CN116285559 B CN 116285559B
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- iron boron
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- 239000003755 preservative agent Substances 0.000 title claims abstract description 56
- 230000002335 preservative effect Effects 0.000 title claims abstract description 52
- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 41
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000005536 corrosion prevention Methods 0.000 title claims abstract description 19
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 47
- 229920000570 polyether Polymers 0.000 claims description 47
- 239000000839 emulsion Substances 0.000 claims description 34
- 238000006116 polymerization reaction Methods 0.000 claims description 34
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 30
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 27
- -1 acrylic ester Chemical class 0.000 claims description 26
- 239000012767 functional filler Substances 0.000 claims description 26
- 239000002131 composite material Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 16
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 15
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims description 15
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 15
- 244000028419 Styrax benzoin Species 0.000 claims description 15
- 235000000126 Styrax benzoin Nutrition 0.000 claims description 15
- 235000008411 Sumatra benzointree Nutrition 0.000 claims description 15
- 229960002130 benzoin Drugs 0.000 claims description 15
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 15
- 235000019382 gum benzoic Nutrition 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 12
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 11
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 11
- 229910000077 silane Inorganic materials 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000012295 chemical reaction liquid Substances 0.000 claims description 8
- 239000007822 coupling agent Substances 0.000 claims description 8
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 239000002318 adhesion promoter Substances 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 7
- RFIZPYFNEYSHKG-UHFFFAOYSA-N pyrrolidine-2,5-dione;sodium Chemical compound [Na].O=C1CCC(=O)N1 RFIZPYFNEYSHKG-UHFFFAOYSA-N 0.000 claims description 7
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000413 hydrolysate Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 108010009736 Protein Hydrolysates Proteins 0.000 claims description 5
- OSXYHAQZDCICNX-UHFFFAOYSA-N dichloro(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](Cl)(Cl)C1=CC=CC=C1 OSXYHAQZDCICNX-UHFFFAOYSA-N 0.000 claims description 5
- 239000012948 isocyanate Substances 0.000 claims description 5
- 150000002513 isocyanates Chemical class 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- BLSAPDZWVFWUTL-UHFFFAOYSA-N 2,5-dioxopyrrolidine-3-sulfonic acid Chemical compound OS(=O)(=O)C1CC(=O)NC1=O BLSAPDZWVFWUTL-UHFFFAOYSA-N 0.000 claims description 2
- FMGBDYLOANULLW-UHFFFAOYSA-N 3-isocyanatopropyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCN=C=O FMGBDYLOANULLW-UHFFFAOYSA-N 0.000 claims description 2
- BUZRAOJSFRKWPD-UHFFFAOYSA-N isocyanatosilane Chemical compound [SiH3]N=C=O BUZRAOJSFRKWPD-UHFFFAOYSA-N 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims 3
- 239000000047 product Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 12
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 229960002317 succinimide Drugs 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000004580 weight loss Effects 0.000 description 4
- 238000009837 dry grinding Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- JPIGLKCRJXYQHT-UHFFFAOYSA-N [Si].[Mo](=S)=S Chemical compound [Si].[Mo](=S)=S JPIGLKCRJXYQHT-UHFFFAOYSA-N 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000010526 radical polymerization reaction Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000001238 wet grinding Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/334—Polymers modified by chemical after-treatment with organic compounds containing sulfur
- C08G65/3348—Polymers modified by chemical after-treatment with organic compounds containing sulfur containing nitrogen in addition to sulfur
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/336—Polymers modified by chemical after-treatment with organic compounds containing silicon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
-
- 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
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to the technical field of preservatives, and discloses a water-based preservative applied to the corrosion prevention of neodymium iron boron chamfer angles and a preparation method thereof.
Description
Technical Field
The invention relates to the technical field of preservatives, in particular to an aqueous preservative applied to neodymium iron boron chamfer corrosion prevention and a preparation method thereof.
Background
In recent years, along with the continuous popularization and expansion of the application range of the NdFeB permanent magnet, the requirements of the permanent magnet with high performance and large volume are in an increasing trend year by year. It is known that after the bonded neodymium-iron-boron permanent magnet is pressed, sharp edges are generated at the intersection edges or corners of the surfaces, the subsequent installation and application of the neodymium-iron-boron permanent magnet are easy to be adversely affected, and meanwhile, the electroplating quality of the neodymium-iron-boron permanent magnet is also affected, so that in practical application, the Ru-iron-boron permanent magnet is often required to be chamfered, but the high-performance magnet is easy to corrode and oxidize, and a large-volume permanent magnet product is easy to oxidize due to low chamfering frequency, slow chamfering angle and long time.
At present, chamfering mainly comprises two processes of dry grinding and wet grinding, wherein the dry grinding is to directly grind materials by brown corundum abrasive materials, but for neodymium iron boron permanent magnets, the chamfering strength of the dry grinding is not well known to lead to unfilled corners at the edges of the magnets, and is not suitable for large-volume permanent magnet products, and the wet grinding can prevent the permanent magnet products from being oxidized and the edges of the permanent magnet products from being missing by adding additives such as preservative into the abrasive materials, but the special preservative products for the neodymium iron boron permanent magnet products in the current market are relatively less, the price is very expensive, the quality stability is poor, and the large-scale practical application is difficult.
Based on the above, the invention provides an environment-friendly and stable water-based preservative which can be directly applied to the chamfering process of neodymium iron boron, thoroughly eliminates the oxidation corrosion phenomenon in the chamfering process, improves the qualification rate of products, reduces the cost and solves the persistent problem puzzling the industry.
Disclosure of Invention
The invention aims to provide an aqueous preservative applied to neodymium iron boron chamfer corrosion prevention and a preparation method thereof, wherein polyether derivatives are prepared and polymerized with acrylate monomers to form acrylate polymerization emulsion, and the aqueous preservative with excellent heat resistance, wear resistance and oxidation resistance is obtained by matching with auxiliaries such as silicon nitride-molybdenum disulfide composite functional fillers.
The aim of the invention can be achieved by the following technical scheme:
the water-based preservative applied to the corrosion prevention of the neodymium iron boron chamfer comprises the following raw materials in parts by weight: 60-70 parts of acrylic ester polymerization emulsion, 2-6 parts of composite functional filler, 1-3 parts of adhesion promoter and 5-10 parts of film forming auxiliary agent;
the acrylic ester polymerization emulsion comprises the following raw materials in parts by weight: 30-40 parts of isooctyl acrylate, 5-10 parts of methyl methacrylate, 20-30 parts of polyether derivative, 0.1-0.2 part of benzoin dimethyl ether and 0.05-0.1 part of n-dodecyl mercaptan;
the polyether derivative is prepared by introducing organosilicon and sulfosuccinimide into an allyl polyether molecular chain;
the composite functional filler is a composite of silicon nitride and molybdenum disulfide.
Further, the preparation method of the acrylic ester polymerization emulsion specifically comprises the following steps:
uniformly mixing isooctyl acrylate, methyl methacrylate, polyether derivative, benzoin dimethyl ether and n-dodecyl mercaptan in parts by weight, irradiating the system with ultraviolet rays for 1-2h at room temperature, and discharging to obtain the acrylic ester polymerization emulsion.
According to the technical scheme, n-dodecyl mercaptan is used as a chain initiator, benzoin dimethyl ether is used as an initiator, and under the condition of ultraviolet irradiation, isooctyl acrylate, methyl methacrylate and polyether derivatives are initiated to carry out free radical polymerization, so that an acrylic ester polymerization emulsion is obtained.
Further, the adhesion promoter is any one of a titanate coupling agent or a silane coupling agent; the film forming auxiliary agent is any one of ethylene glycol butyl ether or propylene glycol methyl ether acetate.
Further, the preparation method of the polyether derivative specifically comprises the following steps:
step one: mixing allyl polyether and toluene, stirring uniformly, raising the temperature to 50-60 ℃, charging nitrogen for protection, adding diphenyl dichlorosilane, and stirring for 1-2h to obtain a pre-reaction material;
step two: adding N-hydroxysulfonic acid succinimide sodium salt into the pre-reaction material, uniformly mixing, raising the temperature to 70-80 ℃, continuously stirring for 6-12h, naturally cooling the material, discharging and purifying to obtain the polyether derivative.
Further, in the first step, the molecular weight of the allyl polyether is 580-700.
According to the technical scheme, the terminal end of the molecular chain of the allyl polyether contains hydroxyl functional groups, the allyl polyether can react with diphenyl dichlorosilane through stirring, single-end grafting can be achieved through controlling the dosage of the allyl polyether and the diphenyl dichlorosilane, an allyl polyether intermediate pre-reaction material with S i-C l groups is obtained, N-hydroxysulfonic acid succinimide sodium salt is put into the pre-reaction material, active hydroxyl in the N-hydroxysulfonic acid succinimide sodium salt structure is utilized to further react with S i-Cl groups in the molecular chain of the allyl polyether intermediate pre-reaction material, and a polyether derivative containing sulfonic acid hydrophilic groups, succinimide hydrophilic groups and unsaturated terminal alkenyl groups is obtained.
Further, the preparation method of the composite functional filler specifically comprises the following steps:
the first step: mixing an isocyanate-based silane coupling agent with 95% ethanol, and raising the temperature to 50-60 ℃ to fully hydrolyze for 1-2 hours to form silane hydrolysate;
and a second step of: mixing nanoscale molybdenum disulfide with silane hydrolysate, dispersing uniformly, further raising the temperature to 80-90 ℃, and stirring for 1-2h to obtain modified nano reaction liquid;
and a third step of: mixing nanoscale silicon nitride with the modified nano reaction liquid, after uniform dispersion, continuously heating to 80-90 ℃, continuously stirring for 2-4 hours, naturally cooling, centrifugally separating materials, washing the materials, and drying in vacuum to obtain the composite functional filler.
Further, in the first step, the isocyanatosilane coupling agent is any one of 3-isocyanatopropyl trimethoxysilane or 3-isocyanatopropyl triethoxysilane.
Further, in the second step, the solid-to-liquid ratio of the nano molybdenum disulfide to the silane hydrolysate is 0.03-0.05:1.
Further, in the third step, the solid-to-liquid ratio of the nanoscale silicon nitride to the modified nano reaction liquid is 0.08-0.1:1.
According to the technical scheme, the double-end activity of the isocyanate-based silane coupling agent is utilized, the isocyanate-based silane coupling agent is hydrolyzed in an ethanol aqueous solution to form a silane hydrolysate containing S i-OH, nano molybdenum disulfide is mixed with the silane hydrolysate, the nano molybdenum disulfide is modified by utilizing the silane hydrolysate, the isocyanate-based active nano molybdenum disulfide can be obtained, and under the condition of high-temperature stirring, the high-reactivity of the isocyanate group can be utilized to further connect with nano silicon nitride to form the nano molybdenum disulfide-silicon nitride composite functional filler.
The preparation method of the water-based preservative applied to the corrosion prevention of the neodymium iron boron chamfer comprises the following steps:
a: placing the acrylic ester polymerization emulsion and the composite functional filler into a mixer, setting the rotating speed to be 200-400r/min, and stirring for 30-40min at room temperature to obtain a premix (1);
b: sequentially pouring the adhesion promoter and the film forming auxiliary agent into a mixer, mixing with the premix (1), continuously stirring for 1-2h, and discharging to obtain the water-based preservative.
The invention has the beneficial effects that:
(1) According to the invention, the sulfonic acid and the succinimide hydrophilic group are introduced into the allyl polyether structure to form the polyether derivative containing unsaturated alkenyl functional groups, and the polyether derivative is subjected to free radical polymerization with the acrylate monomer, so that the prepared acrylic acid polymerization emulsion has good hydrophilicity, and can be mutually dissolved with water in the use process, and therefore, the prepared preservative is an aqueous preservative, so that the environmental problem caused by using a solvent type preservative is avoided, and the environment is protected. In addition, the structure of the allyl polyether contains organic silicon and succinimide, so that the prepared preservative has good heat resistance and excellent heat stability.
(2) According to the invention, the nano molybdenum disulfide-silicon nitride compound is prepared as a functional filler, and is mixed with the acrylic ester polymerization emulsion, so that the preservative can show good wear resistance by utilizing the excellent performance of the nano molybdenum disulfide, and the oxidation corrosion prevention effect of the NdFeB permanent magnet product is not affected by dynamic effects such as workpiece friction and the like.
(3) In the chamfering process of the neodymium-iron-boron permanent magnet product, the organic silicon and the inorganic silicon nitride in the preservative can produce synergistic effect, a compact ceramic-shaped film layer can be formed on the surface of the neodymium-iron-boron permanent magnet product, the neodymium-iron-boron permanent magnet product is isolated from air to form high-efficiency protection effect, meanwhile, the preservative has good high temperature resistance and friction resistance, the neodymium-iron-boron permanent magnet product can not be influenced by dynamic factors such as temperature change and workpiece friction, and the adhesion of the adhesion promoter to the neodymium-iron-boron permanent magnet can play a good long-acting oxidation corrosion prevention role on the product, so that the magnetic property of the neodymium-iron-boron magnet product is kept, and the subsequent application is facilitated.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The water-based preservative applied to the corrosion prevention of the neodymium iron boron chamfer comprises the following raw materials in parts by weight: 60 parts of acrylic ester polymerization emulsion, 2 parts of composite functional filler, 1 part of titanate coupling agent and 5 parts of ethylene glycol butyl ether;
wherein the acrylic ester polymerization emulsion comprises the following raw materials in parts by weight: 30 parts of isooctyl acrylate, 5 parts of methyl methacrylate, 20 parts of polyether derivative, 0.1 part of benzoin dimethyl ether and 0.05 part of n-dodecyl mercaptan;
the preparation method of the aqueous preservative comprises the following steps:
a: uniformly mixing isooctyl acrylate, methyl methacrylate, polyether derivative, benzoin dimethyl ether and n-dodecyl mercaptan in parts by weight, irradiating the system with ultraviolet rays for 1h at room temperature, and discharging to obtain the acrylic ester polymerization emulsion.
B: placing the acrylate polymerization emulsion and the composite functional filler in a mixer, setting the rotating speed to be 200r/min, and stirring for 40min at room temperature to obtain a premix (1);
c: sequentially pouring titanate coupling agent and ethylene glycol butyl ether in parts by weight into a mixer, mixing with the premix (1), continuously stirring for 1h, and discharging to obtain the water-based preservative.
The preparation method of the polyether derivative specifically comprises the following steps:
step one: mixing 2g of allyl polyether with molecular weight of 700 with toluene, stirring uniformly, raising the temperature to 50 ℃, charging nitrogen for protection, adding 0.7g of diphenyl dichlorosilane, and stirring for 1h to obtain a pre-reaction material;
step two: adding 0.5g of N-hydroxysulfonic acid succinimide sodium salt into the pre-reaction material, uniformly mixing, raising the temperature to 75 ℃, continuously stirring for 12 hours, naturally cooling the material, discharging and purifying to obtain the polyether derivative. The polyether derivative is subjected to element content analysis by using TQ-3C type element analysis, and the polyether derivative structure contains 3.61% of nitrogen element and 6.49% of sulfur element through test, and is supposed to be formed by grafting reaction of N-hydroxysulfonic acid succinimide sodium salt and allyl polyether pre-reaction material, so that the nitrogen element and the sulfur element in the N-hydroxysulfonic acid succinimide sodium salt structure are introduced into the polyether structure.
The preparation method of the composite functional filler specifically comprises the following steps:
the first step: 5g of 3-isocyanatopropyl triethoxysilane is mixed with 60mL of 95% ethanol, the temperature is increased to 60 ℃ and the mixture is fully hydrolyzed for 2 hours to form silane hydrolysate;
and a second step of: mixing 0.4g of nanoscale molybdenum disulfide with 10mL of silane hydrolysate, uniformly dispersing, further raising the temperature to 65 ℃, and stirring for 2 hours to obtain modified nano reaction liquid;
and a third step of: mixing 0.1g of nanoscale silicon nitride with 10mL of modified nano reaction liquid, continuously heating to 90 ℃ after uniform dispersion, continuously stirring for 3 hours, naturally cooling, centrifugally separating materials, washing the materials, and drying in vacuum to obtain the composite functional filler.
Example 2
The water-based preservative applied to the corrosion prevention of the neodymium iron boron chamfer comprises the following raw materials in parts by weight: 65 parts of acrylic ester polymerization emulsion, 4 parts of composite functional filler, 5502 parts of KH and 6 parts of propylene glycol methyl ether acetate;
wherein the acrylic ester polymerization emulsion comprises the following raw materials in parts by weight: 35 parts of isooctyl acrylate, 8 parts of methyl methacrylate, 8 parts of polyether derivative, 0.2 part of benzoin dimethyl ether and 0.06 part of n-dodecyl mercaptan;
the preparation method of the aqueous preservative comprises the following steps:
a: uniformly mixing isooctyl acrylate, methyl methacrylate, polyether derivative, benzoin dimethyl ether and n-dodecyl mercaptan in parts by weight, irradiating the system with ultraviolet rays for 1.5h at room temperature, and discharging to obtain the acrylic ester polymerization emulsion.
B: placing the acrylate polymerization emulsion and the composite functional filler in a mixer, setting the rotating speed to 300r/min, and stirring for 40min at room temperature to obtain a premix (1);
c: sequentially pouring KH550 and propylene glycol methyl ether acetate in parts by weight into a mixer, mixing with the premix (1), continuously stirring for 2 hours, and discharging to obtain the water-based preservative.
Wherein the polyether derivative and the complex function filler were prepared in the same manner as in example 1.
Example 3
The water-based preservative applied to the corrosion prevention of the neodymium iron boron chamfer comprises the following raw materials in parts by weight: 70 parts of acrylic ester polymerization emulsion, 6 parts of composite functional filler, 3 parts of titanate coupling agent and 10 parts of ethylene glycol butyl ether;
wherein the acrylic ester polymerization emulsion comprises the following raw materials in parts by weight: 40 parts of isooctyl acrylate, 10 parts of methyl methacrylate, 30 parts of polyether derivative, 0.2 part of benzoin dimethyl ether and 0.1 part of n-dodecyl mercaptan;
the preparation method of the aqueous preservative comprises the following steps:
a: uniformly mixing isooctyl acrylate, methyl methacrylate, polyether derivative, benzoin dimethyl ether and n-dodecyl mercaptan in parts by weight, irradiating the system with ultraviolet rays for 2 hours at room temperature, and discharging to obtain the acrylic ester polymerization emulsion.
B: placing the acrylate polymerization emulsion and the composite functional filler in a mixer, setting the rotating speed to 400r/min, and stirring for 40min at room temperature to obtain a premix (1);
c: sequentially pouring titanate coupling agent and ethylene glycol butyl ether in parts by weight into a mixer, mixing with the premix (1), continuously stirring for 2 hours, and discharging to obtain the water-based preservative.
Wherein the polyether derivative and the complex function filler were prepared in the same manner as in example 1.
Comparative example 1
The water-based preservative applied to the corrosion prevention of the neodymium iron boron chamfer comprises the following raw materials in parts by weight: 65 parts of acrylic ester polymerization emulsion, 4 parts of composite functional filler, 5502 parts of KH and 6 parts of propylene glycol methyl ether acetate;
wherein the acrylic ester polymerization emulsion comprises the following raw materials in parts by weight: 35 parts of isooctyl acrylate, 8 parts of methyl methacrylate, 0.2 part of benzoin dimethyl ether and 0.06 part of n-dodecyl mercaptan;
the preparation method of the aqueous preservative comprises the following steps:
a: uniformly mixing isooctyl acrylate, methyl methacrylate, benzoin dimethyl ether and n-dodecyl mercaptan in parts by weight, irradiating the system for 1.5 hours by using ultraviolet rays at room temperature, and discharging to obtain the acrylic ester polymerization emulsion.
B: placing the acrylate polymerization emulsion and the composite functional filler in a mixer, setting the rotating speed to 300r/min, and stirring for 40min at room temperature to obtain a premix (1);
c: sequentially pouring KH550 and propylene glycol methyl ether acetate in parts by weight into a mixer, mixing with the premix (1), continuously stirring for 2 hours, and discharging to obtain the water-based preservative.
Wherein the preparation method of the composite functional filler is the same as in example 1.
Comparative example 2
The water-based preservative applied to the corrosion prevention of the neodymium iron boron chamfer comprises the following raw materials in parts by weight: 65 parts of acrylic ester polymerization emulsion, 5502 parts of KH and 6 parts of propylene glycol methyl ether acetate;
wherein the acrylic ester polymerization emulsion comprises the following raw materials in parts by weight: 35 parts of isooctyl acrylate, 8 parts of methyl methacrylate, 8 parts of polyether derivative, 0.2 part of benzoin dimethyl ether and 0.06 part of n-dodecyl mercaptan;
the preparation method of the aqueous preservative comprises the following steps:
a: uniformly mixing isooctyl acrylate, methyl methacrylate, polyether derivative, benzoin dimethyl ether and n-dodecyl mercaptan in parts by weight, irradiating the system with ultraviolet rays for 1.5h at room temperature, and discharging to obtain the acrylic ester polymerization emulsion.
B: and (3) placing the acrylate polymerization emulsion, KH550 and propylene glycol methyl ether acetate in a mixer, setting the rotating speed to 300r/min, and stirring at room temperature for 2 hours to obtain the water-based preservative.
Wherein the polyether derivative was prepared in the same manner as in example 1.
Performance detection
a. The aqueous preservatives prepared in examples 1 to 3 and comparative examples 1 to 2 of the present invention were cured to form films, the films were cut into 6-8cm samples, weighed, recording the original weight, repeatedly wiping 1000 times by using 0000# steel wool, weighing again, recording and calculating the weight change rate, and evaluating the wear resistance of the water-based preservative; taking a new sample, weighing, recording the original weight, placing the new sample in an oven at 100 ℃ for 120 hours, weighing again, recording the weight at the moment, calculating the weight loss rate, evaluating the thermal stability of the aqueous preservative, and testing the following table:
| example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | |
| Rate of weight change/% | 0.019 | 0.012 | 0.014 | 0.021 | 0.187 |
| Weight loss rate/% | 0.009 | 0.008 | 0.009 | 0.435 | 0.013 |
As is clear from the above table, the aqueous preservatives prepared in examples 1 to 3 of the present invention have a small weight change rate before and after abrasion and a low weight loss rate before and after thermal oxidation, and thus have good abrasion resistance and thermal stability. The preservative prepared in comparative example 1, to which the polyether derivative was not added, was unable to be heat-resistant enhanced by the silicone and succinimide, and therefore had a high weight loss rate, but exhibited good abrasion resistance due to the addition of the complex functional filler. The aqueous preservative prepared in comparative example 2 was not added with a complex functional filler, and thus had poor abrasion resistance but good heat resistance.
b. Chamfering is carried out on the neodymium-iron-boron permanent magnet workpiece, the aqueous preservative prepared in the embodiment 3 and the comparative example 1 and the comparative example 2 is uniformly sprayed at the chamfering position while chamfering, the coated neodymium-iron-boron permanent magnet workpiece and the original workpiece of the neodymium-iron-boron permanent magnet are simultaneously placed in a 100 ℃ oven, the neodymium-iron-boron permanent magnet workpiece is taken out after accelerated thermo-oxidative aging is carried out for 120 hours, the magnetic performance of the neodymium-iron-boron permanent magnet workpiece is tested, and the test results are shown in the following table:
| example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Original workpiece | |
| remanence/kGs | 6.08 | 6.17 | 6.14 | 5.85 | 5.91 | 5.41 |
| coercivity/kOe | 5.82 | 5.93 | 5.90 | 5.16 | 5.09 | 4.97 |
As can be seen from the above table, according to the thermal oxygen accelerated corrosion test, the neodymium iron boron permanent magnet workpiece sprayed with the preservative prepared in the examples 1-3 maintains better magnetic performance than the workpiece which is not sprayed, so that the aqueous preservative prepared in the examples 1-3 has good neodymium iron boron oxidation corrosion resistance, and the preservative prepared in the comparative examples 1-2 has better magnetic performance than the untreated original workpiece, but has more general obvious oxidation corrosion resistance, and is supposed to be incapable of generating organic silicon and inorganic silicon to cooperate with each other in the preservative to form a compact ceramic-like film, so that the oxidation corrosion resistance effect is general.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (8)
1. The water-based preservative for the corrosion prevention of the neodymium iron boron chamfer is characterized by comprising the following raw materials in parts by weight: 60-70 parts of acrylic ester polymerization emulsion, 2-6 parts of composite functional filler, 1-3 parts of adhesion promoter and 5-10 parts of film forming auxiliary agent;
the acrylic ester polymerization emulsion comprises the following raw materials in parts by weight: 30-40 parts of isooctyl acrylate, 5-10 parts of methyl methacrylate, 20-30 parts of polyether derivative, 0.1-0.2 part of benzoin dimethyl ether and 0.05-0.1 part of n-dodecyl mercaptan;
the polyether derivative is prepared by introducing organosilicon and sulfosuccinimide into an allyl polyether molecular chain;
the preparation method of the polyether derivative specifically comprises the following steps:
step one: mixing allyl polyether and toluene, stirring uniformly, raising the temperature to 50-60 ℃, charging nitrogen for protection, adding diphenyl dichlorosilane, and stirring for 1-2h to obtain a pre-reaction material;
step two: adding N-hydroxysulfonic acid succinimide sodium salt into the pre-reaction material, uniformly mixing, raising the temperature to 70-80 ℃, continuously stirring for 6-12h, naturally cooling the material, discharging, and purifying to obtain polyether derivative;
the composite functional filler is a composite of silicon nitride and molybdenum disulfide;
the preparation method of the composite functional filler specifically comprises the following steps:
the first step: mixing an isocyanate-based silane coupling agent with 95% ethanol, and raising the temperature to 50-60 ℃ to fully hydrolyze for 1-2 hours to form silane hydrolysate;
and a second step of: mixing nanoscale molybdenum disulfide with silane hydrolysate, dispersing uniformly, further raising the temperature to 60-70 ℃, and stirring for 1-2h to obtain modified nano reaction liquid;
and a third step of: mixing nanoscale silicon nitride with the modified nano reaction liquid, after uniform dispersion, continuously heating to 80-90 ℃, continuously stirring for 2-4 hours, naturally cooling, centrifugally separating materials, washing the materials, and drying in vacuum to obtain the composite functional filler.
2. The aqueous preservative applied to neodymium iron boron chamfer corrosion prevention according to claim 1, wherein the preparation method of the acrylate polymerization emulsion is specifically as follows:
uniformly mixing isooctyl acrylate, methyl methacrylate, polyether derivative, benzoin dimethyl ether and n-dodecyl mercaptan in parts by weight, irradiating the system with ultraviolet rays for 1-2h at room temperature, and discharging to obtain the acrylic ester polymerization emulsion.
3. The aqueous preservative applied to the corrosion prevention of the neodymium iron boron chamfer according to claim 1, wherein the adhesion promoter is any one of a titanate coupling agent and a silane coupling agent; the film forming auxiliary agent is any one of ethylene glycol butyl ether or propylene glycol methyl ether acetate.
4. The aqueous preservative for neodymium iron boron chamfer preservation according to claim 1, wherein in the first step, the molecular weight of the allyl polyether is 580-700.
5. The aqueous preservative for neodymium iron boron chamfer corrosion prevention according to claim 1, wherein in the first step, the isocyanatosilane coupling agent is any one of 3-isocyanatopropyl trimethoxysilane or 3-isocyanatopropyl triethoxysilane.
6. The aqueous preservative applied to the preservation of neodymium iron boron chamfer angles according to claim 1, wherein in the second step, the solid-to-liquid ratio of the nanoscale molybdenum disulfide to the silane hydrolysate is 0.03-0.05:1.
7. The aqueous preservative applied to the corrosion prevention of the neodymium iron boron chamfer according to claim 1, wherein in the third step, the solid-liquid ratio of the nanoscale silicon nitride to the modified nano reaction liquid is 0.08-0.1:1.
8. A method for preparing the aqueous preservative applied to the preservation of neodymium iron boron chamfer angles according to claim 1, which comprises the following steps:
a: placing the acrylic ester polymerization emulsion and the composite functional filler into a mixer, setting the rotating speed to be 200-400r/min, and stirring for 30-40min at room temperature to obtain a premix (1);
b: sequentially pouring the adhesion promoter and the film forming auxiliary agent into a mixer, mixing with the premix (1), continuously stirring for 1-2h, and discharging to obtain the water-based preservative.
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