CN113402978A - Preparation method of high-hardness wear-resistant metal anticorrosive paint - Google Patents
Preparation method of high-hardness wear-resistant metal anticorrosive paint Download PDFInfo
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- CN113402978A CN113402978A CN202110761924.3A CN202110761924A CN113402978A CN 113402978 A CN113402978 A CN 113402978A CN 202110761924 A CN202110761924 A CN 202110761924A CN 113402978 A CN113402978 A CN 113402978A
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- resistant metal
- composite
- metal anticorrosive
- hardness wear
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 36
- 239000002184 metal Substances 0.000 title claims abstract description 36
- 239000003973 paint Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 47
- 238000003756 stirring Methods 0.000 claims abstract description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 14
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 230000002378 acidificating effect Effects 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 150000001282 organosilanes Chemical class 0.000 claims description 24
- 238000000576 coating method Methods 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 18
- 239000003054 catalyst Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000000049 pigment Substances 0.000 claims description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 claims description 12
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 238000004040 coloring Methods 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 239000003607 modifier Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004110 Zinc silicate Substances 0.000 claims description 3
- 229920000180 alkyd Polymers 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- ZZNQQQWFKKTOSD-UHFFFAOYSA-N diethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OCC)(OCC)C1=CC=CC=C1 ZZNQQQWFKKTOSD-UHFFFAOYSA-N 0.000 claims description 3
- MNFGEHQPOWJJBH-UHFFFAOYSA-N diethoxy-methyl-phenylsilane Chemical compound CCO[Si](C)(OCC)C1=CC=CC=C1 MNFGEHQPOWJJBH-UHFFFAOYSA-N 0.000 claims description 3
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical group CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 claims description 3
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 claims description 3
- CVQVSVBUMVSJES-UHFFFAOYSA-N dimethoxy-methyl-phenylsilane Chemical compound CO[Si](C)(OC)C1=CC=CC=C1 CVQVSVBUMVSJES-UHFFFAOYSA-N 0.000 claims description 3
- YYLGKUPAFFKGRQ-UHFFFAOYSA-N dimethyldiethoxysilane Chemical compound CCO[Si](C)(C)OCC YYLGKUPAFFKGRQ-UHFFFAOYSA-N 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 3
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 claims description 3
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 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
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical group CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical group CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 3
- XYJRNCYWTVGEEG-UHFFFAOYSA-N trimethoxy(2-methylpropyl)silane Chemical compound CO[Si](OC)(OC)CC(C)C XYJRNCYWTVGEEG-UHFFFAOYSA-N 0.000 claims description 3
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 3
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 3
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 3
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 claims description 3
- 235000019352 zinc silicate Nutrition 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000006527 (C1-C5) alkyl group Chemical group 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- -1 compound organosilane Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000000080 wetting agent Substances 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
- C09D187/00—Coating compositions based on unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
- C09D187/005—Block or graft polymers not provided for in groups C09D101/00 - C09D185/04
-
- 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
- C08G83/001—Macromolecular compounds containing organic and inorganic sequences, e.g. organic polymers grafted onto silica
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a preparation method of a high-hardness wear-resistant metal anticorrosive paint, which comprises the steps of firstly preparing paint film forming material resin and composite slurry, then adding the film forming material resin and the composite slurry into a stirrer according to the mass ratio of 1/5-5, stirring and mixing, then adding an auxiliary agent, continuously stirring for a period of time, filtering and discharging to obtain the high-hardness wear-resistant metal anticorrosive paint. According to the preparation method of the high-hardness wear-resistant metal anticorrosive paint, composite siloxane is adopted to modify nano silica sol in an acidic environment to obtain organic silicon modified composite sol, and paint film forming material resin prepared from the modified composite sol is combined with composite slurry to realize inorganic impurity of the organic paint, so that the hardness of the paint can be effectively improved, and according to detection, the hardness of the paint prepared by adopting the technology disclosed by the patent can reach 5H-6H.
Description
Technical Field
The invention relates to the field of coating equipment, in particular to a preparation method of a high-hardness wear-resistant metal anticorrosive coating.
Background
Metal corrosion generally proceeds by two routes: chemical etching and electrochemical etching. Chemical corrosion is corrosion caused by the direct chemical reaction of a metal surface with the surrounding medium. Electrochemical corrosion is corrosion that results from the reaction of electrodes by contacting a metallic material (alloy or impure metal) with an electrolyte solution. The metal corrosion problem spreads in various fields of national economy, and huge loss is brought to the national economy. For a long time, various techniques have been used to protect metals from chemical corrosion. Among them, one of the most common methods is to apply an anti-corrosion coating on the metal surface to isolate the corrosive medium from the metal substrate.
The metal anticorrosive coating solution is an inorganic polymer chelating film forming solution, takes a siloxane-based SiOSi bond as a base, grafts an organic alkyl side chain as an assistant, and takes hydroxyl as an end chain chelating anticorrosive film forming substance, the bond has good ternary synergistic effect on the hydroxyl and alkyl connected to the silicon atom for chelating, the solution stability is strong, the influence on the inside of a high polymer is reduced, and the film forming substance is more compact, strong in adhesive force and high in temperature resistance (equivalent to the effect of a Ni-based steel material). The filler in the coating is composed of highly dispersed and activated passivated metal particles, nano graphite flakes, nano metal amphoteric oxide, ultrafine rare earth ultrafine powder and the like. The activated anti-corrosion pigments can play a role in resisting corrosion and enhancing polarization, so that the acid resistance, alkali resistance and corrosion resistance of the metal are improved.
However, the existing metal anticorrosive paint generally has the defects of low hardness and poor wear resistance, and the surface of a coating film is damaged after being rubbed for several times, so that the attractiveness of the product is reduced, and the service life of the product is shortened. The main problem of the above reasons is that most of the existing coatings are organic coatings and have poor hardness, so that further improvement on the prior art is needed.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to develop an organic-inorganic hybrid three-proofing coating which has the advantages of both organic coatings and inorganic coatings and makes up the respective defects.
A preparation method of a high-hardness wear-resistant metal anticorrosive paint comprises the following steps:
preparation of coating film-forming resin
(1) Under the condition of stirring, adding nano silica sol into a reaction kettle, controlling the pH value of a system to be 2-6 by adding a catalyst, controlling the reaction temperature to be 30-65 ℃, dropwise adding composite siloxane into the reaction kettle, wherein the mass ratio of the composite siloxane to the nano silica sol is 1/5-3, controlling the dropwise adding time of the composite siloxane to be 6-16 h, and continuously reacting for 2-6 h after dropwise adding is finished to obtain organic silicon modified composite sol;
(2) adding one or more of epoxy resin, phenolic resin, acrylic resin and alkyd resin into the step (1) under the condition of stirring, and carrying out reflux reaction for 2-6 h at the reaction temperature of 45-85 ℃, thus completing the preparation of the coating film-forming material resin;
(II) preparation of composite slurry
Compounding two kinds of powder of an anticorrosive pigment and a coloring pigment at room temperature, adding the powder into a charging barrel, adding a composite solvent, stirring and dispersing by using a high-speed dispersion machine, uniformly dispersing, adding a surface modifier accounting for 0.1-2% of the total mass of the powder, continuously dispersing for 10-30 min, and grinding by using a sand mill to obtain composite slurry;
(III) preparation of the coating
And (3) adding the film-forming material resin in the step (I) and the composite slurry in the step (II) into a stirrer according to the mass ratio of 1/5-5 at room temperature, stirring and mixing, adding an auxiliary agent, continuously stirring for a period of time, filtering and discharging to obtain the high-hardness wear-resistant metal anticorrosive paint.
Preferably, the catalyst refers to an acidic catalyst or a basic catalyst for adjusting the final pH value of the organic silicon modified composite sol; wherein the acidic catalyst is: one or more of hydrochloric acid, nitric acid, formic acid, or acetic acid; the basic catalyst is: one or more of ammonia water, sodium hydroxide and potassium hydroxide
Preferably, the composite organosilane is tetraalkoxy organosilane, trialkoxy organosilane, OR a mixture of dialkoxy organosilane, and the molecular formula of the composite organosilane is RnSi (OR') 4-n, wherein R is an organic functional group which does not contain an oxygen atom and is directly connected with a silicon atom.
Preferably, the tetraalkoxy organosilane is tetramethoxysilane or tetraethoxysilane; the trialkoxy organosilane is methyl triethoxysilane, methyl trimethoxysilane, isobutyl trimethoxysilane, KH560 or KH 570; the dialkoxy organosilane is dimethyl dimethoxy silane, diphenyl dimethoxy silane, dimethyl diethoxy silane, diphenyl diethoxy silane, methyl phenyl dimethoxy silane or methyl phenyl diethoxy silane.
Preferably, the anti-corrosion pigment is one or more of zinc powder, aluminum powder, ferrophosphorus powder, zinc phosphate, zinc silicate, mica iron oxide and aluminum tripolyphosphate.
Preferably, the filler is one or more of silicon carbide, alumina, barium sulfate, molybdenum disulfide, talcum powder, mica and whisker silicon.
Preferably, the coloring pigment is one or more of carbon black, titanium dioxide, iron oxide red, iron oxide black, medium chrome yellow and iron oxide blue.
Preferably, the composite solvent is two or more of ethanol, isopropanol, propylene glycol methyl ether and diacetone alcohol.
Preferably, the surface modifier is one or more of hydroxyl silicone oil, monoalkoxy titanate, KH550, KH560 and KH 570.
Preferably, the pH value of the nano silica sol is 1.5-11, and the particle size is 1-10 nm; the content of silicon dioxide in the nano silica sol is 5-50%, and the solvent is any one or more of ethanol, isopropanol, propylene glycol methyl ether and diacetone alcohol.
The technical scheme has the following beneficial effects: according to the preparation method of the high-hardness wear-resistant metal anticorrosive paint, composite siloxane is adopted to modify nano silica sol in an acidic environment to obtain organic silicon modified composite sol, and paint film forming material resin prepared from the modified composite sol is combined with composite slurry to realize inorganic impurity of the organic paint, so that the hardness of the paint can be effectively improved, and according to detection, the hardness of the paint prepared by adopting the technology disclosed by the patent can reach 5H-6H, and is far higher than that of the existing metal anticorrosive paint.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. The following example embodiments may be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
A preparation method of a high-hardness wear-resistant metal anticorrosive paint comprises the following steps:
preparation of coating film-forming resin
(1) Under the stirring condition of 300r/min, adding nano silica sol with the particle size into a reaction kettle, controlling the pH value of a system to be 2-6, preferably 2.5-4.5, at the reaction temperature of 30-65 ℃, then dropwise adding composite siloxane with the mass ratio of 1/5-3, controlling the dropwise adding time of the composite siloxane to be 6-16 h, preferably 8-12 h, and continuing to react for 2-6 h to obtain organic silicon modified composite sol;
(2) and (2) adding one or more of epoxy resin, phenolic resin, acrylic resin and alkyd resin into the step (1) under the stirring condition of 500r/min, and performing reflux reaction at the reaction temperature of 45-85 ℃ for 2-6 h to complete the preparation of the coating film-forming material resin.
The pH value of the nano silica sol is 1.5-11, the particle size is 1-10 nm, preferably 1-5nm, the content of silicon dioxide in the nano silica sol is 5-50%, preferably 5-20%, and the solvent is any one or more of ethanol, isopropanol, propylene glycol monomethyl ether and diacetone alcohol; the catalyst is an acidic catalyst or an alkaline catalyst for adjusting the final pH value of the organic silicon modified composite sol; wherein the acidic catalyst is: one or more of hydrochloric acid, nitric acid, formic acid, or acetic acid; the basic catalyst is: one or more of ammonia water, sodium hydroxide and potassium hydroxide. The compound organosilane refers to: tetraalkoxy organosilanes, trialkoxy organosilanes, mixtures of dialkoxy organosilanes; the molecular formula is RnSi (OR') 4-n, R is an organic functional group which does not contain an oxygen atom and is directly connected with a silicon atom, such as: alkyl, aryl, gamma-glycidoxypropyl, gamma-methacryloxypropyl; r' is C1-C5 alkyl, and n is 0, 1 or 2; n-0 is tetraalkoxy organosilane, n-1 is trialkoxy organosilane, and n-2 is dialkoxy organosilane.
Preferably, the tetraalkoxy organosilane is tetramethoxysilane or tetraethoxysilane; the trialkoxy organosilane is methyl triethoxysilane, methyl trimethoxysilane, isobutyl trimethoxysilane, KH560 or KH 570; the dialkoxy organosilane is dimethyldimethoxysilane, diphenyldimethoxysilane, dimethyldiethoxysilane, diphenyldiethoxysilane, methylphenyldimethoxysilane or methylphenyldiethoxysilane.
(II) preparation of composite slurry
Compounding an anticorrosive pigment, a coloring pigment and a filler at room temperature, adding the mixture into a charging barrel, adding a composite solvent, stirring and dispersing by using a high-speed dispersion machine, controlling the stirring speed to be 1000-1500 rpm, adding one or more surface modifiers accounting for 0.1-2% of the total mass of powder after uniform dispersion, continuously dispersing for 10-30 min, grinding the composite slurry by using a sand mill, controlling the temperature of a cavity of the sand mill to be 3-6 ℃, and grinding for 1-4 h to finish the preparation of the composite slurry.
The anti-corrosion pigment is one or more of zinc powder, aluminum powder, ferrophosphorus powder, zinc phosphate, zinc silicate, mica iron oxide and aluminum tripolyphosphate. The filler is one or more of silicon carbide, alumina, barium sulfate, molybdenum disulfide, talcum powder, mica and crystal whisker silicon. The coloring pigment is one or more of carbon black, titanium dioxide, iron oxide red, iron oxide black, medium chrome yellow and iron oxide blue. The composite solvent is two or more of ethanol, isopropanol, propylene glycol methyl ether and diacetone alcohol. The surface modifier is one or more of hydroxyl silicone oil, monoalkoxy titanate, KH550, KH560 and KH 570.
(III) preparation of the coating
And (3) stirring and mixing the film forming material resin in the step (I) and the composite slurry in the step (II) for 1h by using a stirrer according to the mass ratio of 1/5-5 at room temperature, adding an auxiliary agent (a leveling agent, a wetting agent and an anti-settling agent), continuously stirring and stirring for 1-2 h, filtering and discharging, and thus completing the preparation of the high-hardness wear-resistant metal anticorrosive paint.
According to the preparation method of the high-hardness wear-resistant metal anticorrosive paint, composite siloxane is adopted to modify nano silica sol in an acidic environment to obtain organic silicon modified composite sol, and paint film forming material resin prepared from the modified composite sol is combined with composite slurry to realize inorganic impurity of the organic paint, so that the hardness of the paint can be effectively improved, and according to detection, the hardness of the paint prepared by adopting the technology disclosed by the patent can reach 5H-6H, and is far higher than that of the existing metal anticorrosive paint.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A preparation method of a high-hardness wear-resistant metal anticorrosive paint is characterized by comprising the following steps:
preparation of coating film-forming resin
Under the condition of stirring, adding nano silica sol into a reaction kettle, controlling the pH value of a system to be 2-6 by adding a catalyst, controlling the reaction temperature to be 30-65 ℃, dropwise adding composite siloxane into the reaction kettle, wherein the mass ratio of the composite siloxane to the nano silica sol is 1/5-3, controlling the dropwise adding time of the composite siloxane to be 6-16 h, and continuously reacting for 2-6 h after dropwise adding is finished to obtain organic silicon modified composite sol;
adding one or more of epoxy resin, phenolic resin, acrylic resin and alkyd resin into the step (1) under the condition of stirring, and carrying out reflux reaction for 2-6 h at the reaction temperature of 45-85 ℃, thus completing the preparation of the coating film-forming material resin;
(II) preparation of composite slurry
Compounding two kinds of powder of an anticorrosive pigment and a coloring pigment at room temperature, adding the powder into a charging barrel, adding a composite solvent, stirring and dispersing by using a high-speed dispersion machine, uniformly dispersing, adding a surface modifier accounting for 0.1-2% of the total mass of the powder, continuously dispersing for 10-30 min, and grinding by using a sand mill to obtain composite slurry;
(III) preparation of the coating
And (3) adding the film-forming material resin in the step (I) and the composite slurry in the step (II) into a stirrer according to the mass ratio of 1/5-5 at room temperature, stirring and mixing, adding an auxiliary agent, continuously stirring for a period of time, filtering and discharging to obtain the high-hardness wear-resistant metal anticorrosive paint.
2. The method for preparing the high-hardness wear-resistant metal anticorrosive paint according to claim 1, wherein the catalyst is an acidic catalyst or a basic catalyst for adjusting the final pH value of the organosilicon-modified composite sol; wherein the acidic catalyst is: one or more of hydrochloric acid, nitric acid, formic acid, or acetic acid; the basic catalyst is: one or more of ammonia water, sodium hydroxide and potassium hydroxide.
3. The method for preparing a high-hardness wear-resistant metal anticorrosive coating according to claim 1, wherein the composite organosilane is a tetraalkoxy organosilane, a trialkoxy organosilane, OR a mixture of dialkoxy organosilanes, and has a molecular formula of RnSi (OR') 4-n, and R is an organic functional group containing no oxygen atom and directly connected with a silicon atom.
4. The method for preparing a high-hardness wear-resistant metal anticorrosive coating according to claim 3, wherein the tetraalkoxy organosilane is tetramethoxysilane or tetraethoxysilane; the trialkoxy organosilane is methyl triethoxysilane, methyl trimethoxysilane, isobutyl trimethoxysilane, KH560 or KH 570; the dialkoxy organosilane is dimethyl dimethoxy silane, diphenyl dimethoxy silane, dimethyl diethoxy silane, diphenyl diethoxy silane, methyl phenyl dimethoxy silane or methyl phenyl diethoxy silane.
5. The method for preparing the high-hardness wear-resistant metal anticorrosive paint according to claim 1, wherein the anticorrosive pigment is one or more of zinc powder, aluminum powder, ferrophosphorus powder, zinc phosphate, zinc silicate, mica iron oxide and aluminum tripolyphosphate.
6. The method for preparing the high-hardness wear-resistant metal anticorrosive paint according to claim 1, wherein the filler is one or more of silicon carbide, aluminum oxide, barium sulfate, molybdenum disulfide, talcum powder, mica and silicon whisker.
7. The method for preparing the high-hardness wear-resistant metal anticorrosive paint according to claim 1, wherein the coloring pigment is one or more of carbon black, titanium dioxide, iron oxide red, iron oxide black, medium chrome yellow and iron oxide blue.
8. The preparation method of the high-hardness wear-resistant metal anticorrosive paint according to claim 1, wherein the composite solvent is two or more of ethanol, isopropanol, propylene glycol methyl ether and diacetone alcohol.
9. The method for preparing the high-hardness wear-resistant metal anticorrosive paint according to claim 1, wherein the surface modifier is one or more of hydroxyl silicone oil, monoalkoxy titanate, KH550, KH560 and KH 570.
10. The preparation method of the high-hardness wear-resistant metal anticorrosive paint according to claim 1, wherein the pH value of the nano silica sol is 1.5-11, and the particle size is 1-10 nm; the content of silicon dioxide in the nano silica sol is 5-50%, and the solvent is any one or more of ethanol, isopropanol, propylene glycol methyl ether and diacetone alcohol.
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