CN116376422A - Impact-resistant protective coating and preparation method and application thereof - Google Patents
Impact-resistant protective coating and preparation method and application thereof Download PDFInfo
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- CN116376422A CN116376422A CN202310389853.8A CN202310389853A CN116376422A CN 116376422 A CN116376422 A CN 116376422A CN 202310389853 A CN202310389853 A CN 202310389853A CN 116376422 A CN116376422 A CN 116376422A
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- impact
- protective coating
- resistant protective
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- 239000011253 protective coating Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 63
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000003063 flame retardant Substances 0.000 claims abstract description 50
- 239000002002 slurry Substances 0.000 claims abstract description 37
- 229920000805 Polyaspartic acid Polymers 0.000 claims abstract description 35
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 35
- 150000002148 esters Chemical class 0.000 claims abstract description 34
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 32
- 229920000570 polyether Polymers 0.000 claims abstract description 32
- 229920005862 polyol Polymers 0.000 claims abstract description 32
- 150000003077 polyols Chemical class 0.000 claims abstract description 32
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 24
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 23
- 239000003085 diluting agent Substances 0.000 claims abstract description 22
- 239000002270 dispersing agent Substances 0.000 claims abstract description 22
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 20
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 20
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 20
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims description 47
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 29
- 239000007787 solid Substances 0.000 claims description 16
- 239000013530 defoamer Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000003607 modifier Substances 0.000 claims description 13
- 238000006116 polymerization reaction Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 238000005260 corrosion Methods 0.000 claims description 10
- IEPRKVQEAMIZSS-UHFFFAOYSA-N Di-Et ester-Fumaric acid Natural products CCOC(=O)C=CC(=O)OCC IEPRKVQEAMIZSS-UHFFFAOYSA-N 0.000 claims description 9
- IEPRKVQEAMIZSS-WAYWQWQTSA-N Diethyl maleate Chemical compound CCOC(=O)\C=C/C(=O)OCC IEPRKVQEAMIZSS-WAYWQWQTSA-N 0.000 claims description 9
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004327 boric acid Substances 0.000 claims description 8
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 7
- KVBKAPANDHPRDG-UHFFFAOYSA-N dibromotetrafluoroethane Chemical compound FC(F)(Br)C(F)(F)Br KVBKAPANDHPRDG-UHFFFAOYSA-N 0.000 claims description 7
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 239000013638 trimer Substances 0.000 claims description 7
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 6
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000000576 coating method Methods 0.000 abstract description 8
- 150000003839 salts Chemical class 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 description 52
- 239000000203 mixture Substances 0.000 description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 22
- 239000007789 gas Substances 0.000 description 20
- 235000012239 silicon dioxide Nutrition 0.000 description 14
- 239000003054 catalyst Substances 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 12
- 239000005543 nano-size silicon particle Substances 0.000 description 12
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- 239000002808 molecular sieve Substances 0.000 description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 description 8
- 229940051841 polyoxyethylene ether Drugs 0.000 description 8
- 230000005855 radiation Effects 0.000 description 8
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 239000004114 Ammonium polyphosphate Substances 0.000 description 7
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 7
- 229920001276 ammonium polyphosphate Polymers 0.000 description 7
- 238000000498 ball milling Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 6
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 6
- 229920000877 Melamine resin Polymers 0.000 description 5
- 229920000388 Polyphosphate Polymers 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000001205 polyphosphate Substances 0.000 description 5
- 235000011176 polyphosphates Nutrition 0.000 description 5
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 5
- 230000035484 reaction time Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000006087 Silane Coupling Agent Substances 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000012043 crude product Substances 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 4
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009775 high-speed stirring Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 239000004970 Chain extender Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- MRVZORUPSXTRHD-UHFFFAOYSA-N bis(hydroxymethyl)phosphorylmethanol Chemical compound OCP(=O)(CO)CO MRVZORUPSXTRHD-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- LSUIEOBBDXBMCZ-NDENLUEZSA-N methyl 2-[(z)-(9-hydroxy-10-methoxy-2,2,4-trimethyl-1h-chromeno[3,4-f]quinolin-5-ylidene)methyl]thiophene-3-carboxylate Chemical group C1=CSC(\C=C/2C3=C4C(C)=CC(C)(C)NC4=CC=C3C3=C(OC)C(O)=CC=C3O\2)=C1C(=O)OC LSUIEOBBDXBMCZ-NDENLUEZSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009736 wetting Methods 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
-
- 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
-
- 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
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
-
- 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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides an impact-resistant protective coating, a preparation method and application thereof, and relates to the technical field of coatings. The impact-resistant protective coating provided by the invention comprises a component A, a component B and nano slurry which are independently packaged; the preparation raw materials of the component A comprise the following components in parts by weight: 30-50 parts of diisocyanate, 40-60 parts of flame-retardant polyether polyol, 1-5 parts of diluent and 1-5 parts of flame retardant; the preparation raw materials of the component B comprise the following components in parts by weight: 50-70 parts of modified polyaspartic acid ester, 20-30 parts of amino polydimethylsiloxane, 1-5 parts of modified graphene, 5-15 parts of dispersing agent and 1-5 parts of modified defoaming agent; the mass ratio of the component A to the component B is 1:1 to 2. The impact-resistant protective coating provided by the invention has good wear resistance, impact resistance, hydrophobicity, flame retardance and salt fog resistance, and is suitable for occasions with very severe working conditions of fan blades.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an impact-resistant protective coating and a preparation method and application thereof.
Background
In the prior art, if very severe working conditions are met, such as in hail weather, the fan blade is required to face extreme conditions of high-speed impact of hail, blowing of wind and rain and the like, and the damage at high temperature is required to be prevented, but the existing coating material cannot still keep good waterproof and impact resistance under the working conditions, and does not have flame retardant property. Accordingly, there is a need to provide a coating that combines high hydrophobicity, high impact resistance, and flame retardance to reduce fan blade wear.
Disclosure of Invention
The invention aims to provide an impact-resistant protective coating, a preparation method and application thereof, and the impact-resistant protective coating provided by the invention has better wear resistance, impact resistance, hydrophobicity, flame retardance and salt spray resistance, and is suitable for occasions with very severe working conditions of fan blades.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides an impact-resistant protective coating, which comprises a component A, a component B and nano slurry which are independently packaged;
the preparation raw materials of the component A comprise the following components in parts by weight: 30-50 parts of diisocyanate, 40-60 parts of flame-retardant polyether polyol, 1-5 parts of diluent and 1-5 parts of flame retardant;
the preparation raw materials of the component B comprise the following components in parts by weight: 50-70 parts of modified polyaspartic acid ester, 20-30 parts of amino polydimethylsiloxane, 1-5 parts of modified graphene, 5-15 parts of dispersing agent and 1-5 parts of modified defoaming agent;
the mass ratio of the component A to the component B is 1:1 to 2.
Preferably, the preparation method of the modified polyaspartic acid ester comprises the following steps: respectively reacting isophorone diamine and gamma-aminopropyl triethoxy silane with diethyl maleate to generate two types of polyaspartic acid esters, adding IPDI trimer, and blending to generate modified polyaspartic acid esters.
Preferably, the preparation raw materials of the modified graphene comprise, by weight: 5-25 parts of graphite powder, 70-90 parts of liquid gas, 1-5 parts of modifier, 1-3 parts of water and 1-3 parts of boric acid solution.
Preferably, the preparation method of the modified defoaming agent comprises the following steps: and modifying the defoamer by using chloroplatinic acid, 1, 2-dibromotetrafluoroethane and toluene to obtain the modified defoamer.
Preferably, the flame retardant polyether polyol comprises one or more of POP3628H polyether polyol and CPOP290E polyether polyol.
Preferably, the nano-slurry comprises nano-silica and an accelerator.
Preferably, the solid content of the nano slurry is 30-40%; the mass ratio of the component B to the nano slurry is 1:0.025-0.06.
The invention provides a preparation method of the impact-resistant protective coating, which comprises the following steps:
mixing diisocyanate, flame-retardant polyether polyol, a diluent and a flame retardant, and performing polymerization reaction to obtain a component A;
mixing modified polyaspartic acid ester, amino polydimethylsiloxane, modified graphene, a dispersing agent and a modified defoaming agent, and performing heating treatment to obtain a component B;
when in use, the component A, the component B and the nano slurry are mixed to obtain the impact-resistant protective coating.
Preferably, the temperature of the polymerization reaction is 60-70 ℃; the temperature of the heating treatment is 70-85 ℃.
The invention provides the application of the impact-resistant protective coating prepared by the technical scheme or the preparation method of the technical scheme in the metal corrosion prevention field.
The invention provides an impact-resistant protective coating, which comprises a component A, a component B and nano slurry which are independently packaged; the preparation raw materials of the component A comprise the following components in parts by weight: 30-50 parts of diisocyanate, 40-60 parts of flame-retardant polyether polyol, 1-5 parts of diluent and 1-5 parts of flame retardant; the preparation raw materials of the component B comprise the following components in parts by weight: 50-70 parts of modified polyaspartic acid ester, 20-30 parts of amino polydimethylsiloxane, 1-5 parts of modified graphene, 5-15 parts of dispersing agent and 1-5 parts of modified defoaming agent; the mass ratio of the component A to the component B is 1:1 to 2. The impact-resistant protective coating provided by the invention has good wear resistance, impact resistance, hydrophobicity, flame retardance and salt fog resistance, and is suitable for occasions with very severe working conditions of fan blades.
Detailed Description
The invention provides an impact-resistant protective coating, which comprises a component A, a component B and nano slurry which are independently packaged;
the preparation raw materials of the component A comprise the following components in parts by weight: 30-50 parts of diisocyanate, 40-60 parts of flame-retardant polyether polyol, 1-5 parts of diluent and 1-5 parts of flame retardant;
the preparation raw materials of the component B comprise the following components in parts by weight: 50-70 parts of modified polyaspartic acid ester, 20-30 parts of amino polydimethylsiloxane, 1-5 parts of modified graphene, 5-15 parts of dispersing agent and 1-5 parts of modified defoaming agent;
the mass ratio of the component A to the component B is 1:1 to 2.
In the present invention, unless otherwise specified, the raw materials for preparation used are commercially available products well known to those skilled in the art.
The impact-resistant protective coating provided by the invention comprises a component A. In the invention, the preparation raw materials of the component A comprise the following components in parts by weight: 30-50 parts of diisocyanate, 40-60 parts of flame-retardant polyether polyol, 1-5 parts of diluent and 1-5 parts of flame retardant; more preferably, the flame retardant comprises 40 to 48 parts of diisocyanate, 48 to 56 parts of flame retardant polyether polyol, 2 to 5 parts of diluent and 2 to 5 parts of flame retardant. In the present invention, the diisocyanate preferably includes one or more of toluene-2, 4-diisocyanate and toluene-2, 6-diisocyanate. In the present invention, when the diisocyanate is a mixture of toluene-2, 4-diisocyanate and toluene-2, 6-diisocyanate; the mass ratio of the toluene-2, 4-diisocyanate to the toluene-2, 6-diisocyanate is preferably 1:0.5 to 1.5, more preferably 1:1. In the present invention, the flame retardant polyether polyol preferably comprises one or more of POP3628H polyether polyol and CPOP290E polyether polyol; the number average molecular weight of the flame retardant polyether polyol is preferably 2000 to 3000, more preferably 2400 to 2600. In the present invention, the diluent preferably includes propylene carbonate or n-butyl acetate. In the present invention, the flame retardant preferably includes one or more of ammonium polyphosphate, melamine polyphosphate, trimethylol phosphine oxide, phosphate and hyperbranched phosphorus-containing polyurethane. In the present invention, the melamine polyphosphate is preferably melamine polyphosphate (MPP); the phosphate is preferably ammonium polyphosphate (APP).
In the present invention, the mass ratio of the diisocyanate to the flame retardant polyether polyol is preferably 1:1 to 2, more preferably 1:1.4 to 1.6.
The impact-resistant protective coating provided by the invention comprises a component B. In the invention, the preparation raw materials of the component B comprise the following components in parts by weight: 50-70 parts of modified polyaspartic acid ester, 20-30 parts of amino polydimethylsiloxane, 1-5 parts of modified graphene, 5-15 parts of dispersing agent and 1-5 parts of modified defoaming agent; more preferably, the modified polyurethane foam comprises 60-68 parts of modified polyaspartic acid ester, 20-27 parts of amino polydimethylsiloxane, 1-2 parts of modified graphene, 5-10 parts of dispersing agent and 2-3 parts of modified defoaming agent. In the invention, the mass ratio of the modified polyaspartic acid ester to the amino polydimethylsiloxane is preferably 6-8: 2 to 3, more preferably 6.8 to 7.2:2.4 to 2.6.
In the present invention, the preparation method of the modified polyaspartic acid ester preferably comprises the following steps: respectively reacting isophorone diamine and gamma-aminopropyl triethoxy silane with diethyl maleate to generate two types of polyaspartic acid esters, adding IPDI trimer, and blending to generate modified polyaspartic acid esters. In the present invention, the preparation method of the modified polyaspartic acid ester more preferably comprises: (S1) adding isophorone diamine into a flask, starting stirring, dropwise adding diethyl maleate at room temperature, controlling the reaction temperature, and heating to react for a period of time for later use; (S2) adding gamma-aminopropyl triethoxysilane into a flask, starting stirring, dropwise adding diethyl maleate at room temperature, controlling the reaction temperature, and heating to react for a period of time for later use; (S3) adding the IPDI trimer into a flask, starting stirring, adding the IPDI trimer into the prepared solution in the step (S2) at room temperature, controlling the reaction temperature, and heating to react for a period of time for standby; and (S4) adding the prepared solution in the step (S1) and part of butyl acetate into a flask, starting stirring, uniformly mixing the prepared solution in the step (S3) and the rest of butyl acetate at room temperature, then dripping into the flask, and heating to react for a period of time after the addition is completed to obtain the modified polyaspartic acid ester. In the present invention, the mass ratio of isophorone diamine to diethyl maleate in the step (S1) is preferably 200 to 220: 340-355; the stirring speed in the step (S1) is preferably 210-220 rpm, the reaction temperature is preferably 40-50 ℃, the temperature rise is preferably 65-75 ℃, and the reaction time is preferably 30-40 h. In the present invention, in the step (S2), the mass ratio of γ -aminopropyl triethoxysilane to diethyl maleate is preferably 165 to 180: 170-180, preferably 210-220 rpm, controlling the reaction temperature to be 40-50 ℃, heating to be 55-65 ℃ and reacting for 10-15 h. In the invention, the mass ratio of the IPDI trimer to the solution in the step (S2) in the step (S3) is preferably 200-210: 110 to 115, the stirring speed is preferably 210 to 220rpm, the reaction temperature is preferably controlled to be 30 to 35 ℃, the temperature rise is preferably controlled to be 55 to 65 ℃, and the reaction time is preferably controlled to be 2 to 3 hours. In the present invention, the mass ratio of the step (S1) solution, part of butyl acetate, the step (S3) solution and the remaining butyl acetate in the step (S4) is preferably 530 to 540: 60-70: 180-185: 20-30, preferably 210-220 rpm, the dripping speed is preferably 4-6 mL/min, the heating temperature is preferably 60-70 ℃, and the reaction time is preferably 2-3 h.
In the invention, the preparation raw materials of the modified graphene preferably comprise the following components in parts by weight: 5-25 parts of graphite powder, 70-90 parts of liquid gas, 1-5 parts of modifier, 1-3 parts of water and 1-3 parts of boric acid solution; more preferably, the graphite powder comprises 6 parts of graphite powder, 87 parts of liquid gas, 3 parts of modifier, 2 parts of water and 2 parts of boric acid solution. In the present invention, the graphite powder is preferably a flake graphite powder; the particle size of the graphite powder is preferably 1000 to 3000 mesh, more preferably 2500 mesh. In the present invention, the liquid gas is preferably liquid carbon dioxide. In the present invention, the modifier is preferably a silane coupling agent or a silica sol. In the present invention, the silane coupling agent is preferably KH550, KH560 or KH570. In the present invention, the solid content of the silica sol is preferably 20 to 30%. In the present invention, the water is preferably distilled water. In the present invention, the concentration of the boric acid solution is preferably 1 to 2mol/L, more preferably 1.5mol/L.
In the present invention, the preparation method of the modified graphene preferably includes: (a1) Placing graphite powder, a modifier, water and boric acid solution in a high-pressure bottle, and vacuumizing; (a2) Filling liquid gas into the high-pressure bottle, and standing; (a3) Connecting the high-pressure bottle with a solid gas preparation machine to prepare solid gas; (a4) Ultraviolet irradiation is carried out on the solid gas to obtain a modified graphene crude product; (a5) And exposing the modified graphene crude product under an ultraviolet lamp to obtain modified graphene. In the present invention, the high-pressure bottle is preferably a stainless steel high-pressure bottle. In the invention, the vacuum degree of the step (a 1) to the high-pressure bottle is-0.09-0.1 MPa. In the present invention, the time of the standing in the step (a 2) is preferably 20 to 28 hours, more preferably 24 hours. In the present invention, the size of the solid gas in the step (a 3) is preferably (80 to 120) mm× (40 to 60) mm× (10 to 30) mm, more preferably 100mm×50mm×20mm. In the present invention, the ultraviolet radiation in the step (a 4) includes 185nm ultraviolet radiation and 254nm ultraviolet radiation which are simultaneously performed; the time of the ultraviolet radiation is preferably such that the solid gas is completely lost. In the present invention, the ultraviolet irradiation is preferably performed in an ultraviolet cleaning machine. In the ultraviolet radiation process, the solid gas generates microscopic burst to strip the modified graphene sheet, and simultaneously the graphene sheet and the solid gas are subjected to functional modification to form carbonyl groups and carbon hydroxyl groups, and the carbonyl groups, the carbon hydroxyl groups and the like generated on the surface of the modified graphene are subjected to grafting reaction with silicon hydroxyl groups formed by hydrolysis of a silicon hydroxyl compound or a modifier under high-energy radiation to obtain a crude product of the modified graphene. In the present invention, the exposure time under the ultraviolet lamp in (a 5) is preferably 20 to 60min, more preferably 30min; the ultraviolet lamp emits ultraviolet light at wavelengths of 185nm and 254nm simultaneously. According to the invention, the crude modified graphene is exposed under an ultraviolet lamp, so that organic matters in the impurity clamp on the surface of the modified graphene can be removed, functional modification is continuously completed to form carbonyl, carbon hydroxyl and the like, and grafting reaction is carried out on the modified graphene and the silicon hydroxyl compound formed by hydrolysis of the silicon hydroxyl compound or the modifier or the silicon hydroxyl formed by hydrolysis of the modifier under high-energy radiation to obtain the modified graphene. In the present invention, the modified graphene is preferably stored in vacuum. In the invention, the modified graphene is efficient and environment-friendly, has excellent dispersibility, has the surface functionalization characteristic, can be bonded and grafted with nano silicon for modification, and is beneficial to further improving the impact resistance of the impact-resistant protective coating.
In the present invention, the dispersant is preferably an aqueous pigment wetting dispersant, more preferably TEGO Dispers 757W. In the invention, the dispersing agent is beneficial to improving the dispersion performance of the component A, the component B and the nano slurry, so that the nano slurry is fully dispersed in the component A and the component B, and the anti-corrosion performance of the impact-resistant protective coating is beneficial to improving.
In the present invention, the preparation method of the modified defoaming agent preferably includes: and modifying the defoamer by using chloroplatinic acid, 1, 2-dibromotetrafluoroethane and toluene to obtain the modified defoamer. In the present invention, the preparation method of the modified defoaming agent more preferably includes: (b1) Dissolving chloroplatinic acid in isopropanol, stirring and mixing at a speed of 200-220 rpm for 6-8 hours to obtain a catalyst; (b2) Adding 1, 2-dibromotetrafluoroethane into a flask, adding Rieke Zn, adding an ethanol solution, controlling the reaction temperature to 65 ℃ and the reaction time to 30-40 minutes to obtain an intermediate 1; (b3) Adding the intermediate 1 prepared in the step (b 2), toluene and the catalyst prepared in the step (b 1) into a three-neck flask, controlling the reaction temperature to be 45-50 ℃, reacting for 1-1.5 hours at the stirring speed of 180-200 rpm, heating to 70 ℃, dropwise adding tetramethyl cyclotetrasiloxane, after the dropwise adding, heating to 80 ℃ for reacting for 8-9 hours, stopping heating, cooling to room temperature, adding active carbon, stirring for 5-6 hours at the speed of 230-250 rpm, filtering, and steaming filtrate to obtain an intermediate 2; (b4) Sequentially adding the intermediate 2 prepared in the step (b 3) and 1, 3-tetramethyl-1, 3-disiloxane diol into a three-neck flask, mixing and stirring at a speed of 180-200 rpm, dropwise adding concentrated sulfuric acid while stirring, reacting at 60-65 ℃ for 3-4 hours, adding sodium bicarbonate to neutralize the concentrated sulfuric acid, and vacuumizing the obtained product at 140-145 ℃ to remove unreacted intermediate 2 to obtain an intermediate 3; (b5) Adding the intermediate 3 prepared in the step (b 4), fatty alcohol-polyoxyethylene ether and toluene into a three-neck flask, stirring and mixing for 10-20 minutes at the speed of 210-220 rpm, adding a molecular sieve catalyst, controlling the reaction temperature to be 70-75 ℃, reacting for 6-7 hours, centrifuging to remove the molecular sieve catalyst, and removing the toluene under reduced pressure to obtain an intermediate 4; (b6) Adding the intermediate 4 prepared in the step (b 5) and silicon dioxide into a three-neck flask, heating to 80 ℃ under the stirring speed of 190-200 rpm, reacting for 1-2 hours at constant temperature, adding Span80, sodium carboxymethyl cellulose and deionized water, and reacting for 2-3 hours to obtain the modified defoamer. In the present invention, the ratio of chloroplatinic acid to isopropyl alcohol in the step (b 1) is preferably 0.1 to 0.2g: 80-120 mL. In the present invention, the ratio of the 1, 2-dibromotetrafluoroethane, rieke Zn, and ethanol solution in step (b 2) is preferably 0.8 to 1g:0.3 to 0.5mg: 15-20 mL; the mass fraction of the ethanol solution is preferably 56%. In the present invention, the ratio of the intermediate 1, toluene, catalyst, tetramethyl cyclotetrasiloxane and activated carbon in the step (b 3) is preferably 0.5 to 0.6g: 2-3 g: 0.2-0.3 mg:0.3 to 0.35g: 10-12 mg. In the present invention, the ratio of the amount of the intermediate 2, 1, 3-tetramethyl-1, 3-disiloxane diol and concentrated sulfuric acid in the step (b 4) is preferably 0.55 to 0.6g:0.3 to 0.4g: 5-6 mg; the mass fraction of the concentrated sulfuric acid is preferably 95%. In the present invention, the mass ratio of the intermediate 3 to the fatty alcohol-polyoxyethylene ether in the step (b 5) is preferably 2:1, a step of; the mass of toluene in the step (b 5) is preferably 50% of the total mass of the intermediate 3 and the fatty alcohol-polyoxyethylene ether; the mass of the molecular sieve catalyst in the step (b 5) is preferably 0.4% of the total mass of the intermediate 3 and the fatty alcohol-polyoxyethylene ether. In the present invention, the molecular sieve catalyst is preferably a ZSM-5 molecular sieve. In the present invention, the ratio of the intermediate 4, silica, span80, sodium carboxymethyl cellulose and deionized water in the step (b 6) is preferably 6 to 8g: 4-6 g:0.2 to 0.3g:0.3 to 0.35g: 10-15 g. In the invention, the modified defoamer plays a role in reducing surface tension and inhibiting foam generation, so that the preparation process of the impact-resistant protective coating is more convenient and efficient.
In the invention, the mass ratio of the component A to the component B is 1:1 to 2, more preferably 1:1.5.
the impact-resistant protective coating provided by the invention comprises nano-sizing agent. In the present invention, the nano-slurry preferably includes nano-silica and an accelerator. In the invention, the solid content of the nano slurry is preferably 30-40%; the mass ratio of the component B to the nano slurry is preferably 1:0.025-0.06, more preferably 1:0.04-0.048.
In the present invention, the particle diameter of the nano paste is preferably 60 to 80nm, more preferably 70 to 75nm. In the present invention, the particle diameter of the nanosilica is preferably 30 to 50nm, more preferably 40 to 42nm. In the present invention, the accelerator is preferably an accelerator for polyurethane adhesives, more preferably a novel accelerator for two-component polyurethane coating systems, and particularly preferably a BorchiKat0243 accelerator. In the invention, the mass ratio of the nano silicon dioxide to the accelerator is preferably 3-5: 1, more preferably 4:1.
in the present invention, the preparation method of the nano-slurry preferably includes: ball milling and mixing the nano silicon dioxide and the accelerator to obtain nano slurry. In the invention, the rotating speed of the ball milling and mixing is preferably 100-200 r/min, more preferably 140-160 r/min; the time of the ball-milling mixing is preferably 2 hours. In the present invention, the solvent for ball milling is preferably n-butanol.
In the invention, the nano-slurry is used as a modifier and dispersed in the component A and the component B, has larger specific surface area and stronger interface bonding effect with the component A and the component B, and is easy to form a netlike polymer with the component A and the component B, thereby improving the bonding performance of the component A and the component B in the impact-resistant protective coating and being beneficial to improving the anti-corrosion performance of the impact-resistant protective coating. In addition, the nano-sizing agent can be broken with the component A and the component B to form new bonding active free radicals, and the new free radicals are extremely easy to weld due to high activity, so that atoms between the nano-sizing agent and the component A and the component B are mutually diffused to form a netlike polymer, the acting force between the component A, the component B and the nano-sizing agent is improved, and the anti-corrosion performance and the adhesive performance of the impact-resistant protective coating are improved.
The invention provides a preparation method of the impact-resistant protective coating, which comprises the following steps:
mixing diisocyanate, flame-retardant polyether polyol, a diluent and a flame retardant, and performing polymerization reaction to obtain a component A;
mixing modified polyaspartic acid ester, amino polydimethylsiloxane, modified graphene, a dispersing agent and a modified defoaming agent, and performing heating treatment to obtain a component B;
when in use, the component A, the component B and the nano slurry are mixed to obtain the impact-resistant protective coating.
The invention mixes diisocyanate, flame-retardant polyether polyol, diluent and flame retardant, and carries out polymerization reaction to obtain the component A. In the present invention, the polymerization reaction is preferably carried out under nitrogen gas. In the present invention, the mixing of the diisocyanate, the flame retardant polyether polyol, the diluent and the flame retardant for polymerization preferably comprises: mixing diisocyanate and flame-retardant polyether polyol, and performing polymerization reaction to obtain a semi-prepolymer; the semi-prepolymer is mixed with a diluent and a flame retardant. In the invention, the mixing mode of the diisocyanate and the flame-retardant polyether polyol is preferably stirring mixing; the rotation speed of the stirring and mixing is preferably 400-500 r/min, more preferably 460-480 r/min. In the present invention, the temperature of the polymerization reaction is preferably 60 to 70 ℃, more preferably 65 to 66 ℃; the polymerization time is preferably 3 to 4 hours, more preferably 3.4 to 3.6 hours. In the present invention, the semi-prepolymer is preferably mixed with the diluent and the flame retardant by stirring; the rotation speed of stirring and mixing is preferably 1500-2500 r/min, more preferably 1800-2200 r/min; the stirring and mixing time is preferably 4 hours.
In the invention, diisocyanate and flame-retardant polyether polyol are subjected to polymerization reaction to generate a semi-prepolymer, the semi-prepolymer is generated by reacting a hydroxyl-terminated compound with isocyanate, and the semi-prepolymer is one of important raw materials of the impact-resistant protective coating, so that the impact-resistant protective coating provided by the invention has better adhesive property and corrosion resistance. In the invention, the diluent is used for reducing viscosity and improving the soaking force of the impact-resistant protective coating, so that the impact-resistant protective coating has a longer service life. In the invention, the flame retardant enables the coating to have stable and efficient flame retardant performance.
According to the invention, modified polyaspartic acid ester, amino polydimethylsiloxane, modified graphene, a dispersing agent and a modified defoaming agent are mixed, and heating treatment is carried out to obtain the component B. In the present invention, the heat treatment is preferably performed under nitrogen gas. In the present invention, the modified polyaspartic acid ester, amino polydimethylsiloxane, modified graphene, dispersant and modified defoamer mixture preferably comprises: firstly, mixing modified polyaspartic acid ester and amino polydimethylsiloxane, and then sequentially mixing the mixture with modified graphene, a dispersing agent and a modified defoaming agent. In the present invention, the mixing means is preferably stirring mixing, and the rotation speed of the stirring mixing is preferably 400 to 500r/min, more preferably 440 to 460r/min. In the present invention, the temperature of the heating treatment is preferably 70 to 85 ℃, more preferably 74 to 76 ℃; the time of the heat treatment is preferably 15 to 25 hours, more preferably 20 to 21 hours.
In the invention, the component B is hydroxyl-terminated resin or a mixture of amino-terminated resin and amino-terminated chain extender, and the component B is one of important raw materials of the impact-resistant protective coating, so that the impact-resistant protective coating provided by the invention has better bonding property and anti-corrosion property.
When in use, the component A, the component B and the nano slurry are mixed to obtain the impact-resistant protective coating. In the invention, the component A, the component B and the nano slurry are mixed again when in use, so that the curing of the impact-resistant protective coating after the component A and the component B are mixed can be avoided.
In the present invention, the mixing of the component A, the component B and the nano slurry is preferably performed under the protection of nitrogen; the mixing of component a, component B and the nano-slurry preferably comprises: component B is mixed with the nano-slurry and then component A is added. In the invention, the mode of mixing the component A, the component B and the nano slurry is preferably stirring and mixing; the rotation speed of the stirring and mixing is preferably 300-500 r/min, more preferably 380-420 r/min. Under the high-speed stirring effect, the component A and the component B react to generate a polyurea high polymer; in addition, the nano slurry is used as a modifier, and can form a net-shaped high polymer with the component A and the component B, so that the anti-corrosion performance of the impact-resistant protective coating can be improved; under the action of high-speed stirring and shearing, the nano-slurry can be broken with the component A and the component B to form new bonds and active free radicals, so that the nano-slurry is fully dispersed in the component A and the component B, and the anti-corrosion performance and the bonding performance of the impact-resistant protective coating are improved.
The invention provides application of the impact-resistant protective coating prepared by the technical scheme or the preparation method of the technical scheme in the metal corrosion prevention field, and more preferably application of the impact-resistant protective coating in fan blades.
In the present invention, the application preferably includes the steps of: and coating the impact-resistant protective coating on the surface of the metal matrix to be protected to form an impact-resistant protective coating. In the present invention, the metal substrate to be protected is preferably 45 steel.
The manner and thickness of the coating are not particularly limited, and those commonly used by those skilled in the art may be employed. The method and the time for drying the applied paint are not particularly limited, and the paint drying method and the time for drying which are commonly used by those skilled in the art may be adopted.
In the invention, the impact-resistant protective coating is beneficial to blocking the corrosion of water and oxygen in the air to the metal matrix to be protected, thereby playing an anti-corrosion role.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. 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 mass ratio of the component A to the component B is 1:1.5;
the raw materials of the component A (weight parts): 40 parts of diisocyanate (a mixture of toluene-2, 4-diisocyanate and toluene-2, 6-diisocyanate in a mass ratio of 1:1), 56 parts of POP3628H polyether polyol, 2 parts of diluent propylene carbonate and 2 parts of flame retardant ammonium polyphosphate;
preparation of component A: the diisocyanate and the flame-retardant polyether polyol are mixed in a high-speed stirrer under the protection of high-purity nitrogen at a stirring speed of 400r/min to react for 3 hours at 60 ℃, and then the diluent propylene carbonate and the flame retardant ammonium polyphosphate are sequentially added to stir for 4 hours at a speed of 2000r/min to obtain the component A.
The raw materials of the component B (weight portions): 68 parts of modified polyaspartic acid ester, 24 parts of amino polydimethylsiloxane, 2 parts of modified graphene powder, 5 parts of dispersing agent TEGO Dispers 757W and 1 part of modified defoaming agent;
the preparation method of the modified graphene comprises the following steps:
step (a 1), placing scaly graphite powder, a silane coupling agent KH550, distilled water and boric acid solution with the mass concentration of 1.5mol/L in a stainless steel high-pressure bottle, sealing well, and slowly pumping out air in the stainless steel high-pressure bottle, wherein the vacuum degree in the stainless steel high-pressure bottle is 0.09MPa:
filling liquid gas into the stainless steel high-pressure bottle in the step (a 1), shaking uniformly and standing for 24 hours;
step (a 3), connecting the stainless steel high-pressure bottle in the step (a 2) with a solid gas preparation machine to prepare solid gas;
step (a 4), placing the solid gas prepared in the step (a 3) into an ultraviolet light cleaning machine for ultraviolet radiation until the solid gas completely disappears, and preparing the modified graphene crude product;
and (a 5) continuously exposing the crude modified graphene product in the step (a 4) under an ultraviolet lamp for 30min, removing organic matters in the surface impurity clamp of the modified graphene, simultaneously completing functional modification to form carbonyl and carbon hydroxyl to obtain the functional modified graphene, and storing the modified graphene in vacuum.
The modified graphene is prepared from the following materials in parts by weight: 6 parts of flake graphite powder, 87 parts of liquid gas, 3 parts of modifier, 2 parts of distilled water and 2 parts of boric acid solution. The particle size of the flaky graphite powder is 2500 meshes. The liquid gas is liquid carbon dioxide. The modifier is a silane coupling agent KH550. The size of the solid gas in the step (a 3) is 100mm×50mm×20mm. The ultraviolet light cleaning machine is a drawer type belt reflection cover, and the wavelength of ultraviolet light in the ultraviolet light cleaning machine is 185nm and 254nm.
The preparation method of the modified defoaming agent comprises the following steps:
step (b 1), dissolving chloroplatinic acid in isopropanol, and stirring and mixing at a speed of 200rpm for 6 hours to prepare a catalyst;
step (b 2), adding 1, 2-dibromotetrafluoroethane into a flask, adding Rieke Zn, adding an ethanol solution, controlling the reaction temperature to 65 ℃ and the reaction time to 30 minutes, and preparing an intermediate 1;
adding the intermediate 1 prepared in the step (b 2), toluene and the catalyst prepared in the step (b 1) into a three-neck flask, controlling the reaction temperature to 45 ℃, reacting at a stirring speed of 180rpm for 1 hour, heating to 70 ℃, dropwise adding tetramethyl cyclotetrasiloxane, heating to 80 ℃ after the dropwise adding is finished, reacting for 8 hours, stopping heating, cooling to room temperature, adding active carbon, stirring for 5 hours at a speed of 230rpm, filtering, and steaming filtrate to obtain an intermediate 2;
step (b 4), sequentially adding the intermediate 2 prepared in the step (b 3) and 1, 3-tetramethyl-1, 3-disiloxane diol into a three-neck flask, mixing and stirring at a speed of 180rpm, dropwise adding concentrated sulfuric acid while stirring, reacting at 60 ℃ for 3 hours, adding sodium bicarbonate to neutralize the concentrated sulfuric acid, and vacuumizing the obtained product at 140 ℃ to remove unreacted intermediate 2 to prepare an intermediate 3;
step (b 5), adding the intermediate 3 prepared in the step (b 4), fatty alcohol-polyoxyethylene ether and toluene into a three-neck flask, stirring and mixing for 10 minutes at the speed of 210rpm, adding a molecular sieve catalyst, controlling the reaction temperature to be 70 ℃, reacting for 6 hours, centrifuging to remove the molecular sieve catalyst, and removing the toluene under reduced pressure to prepare an intermediate 4;
and (b 6) adding the intermediate 4 and silicon dioxide prepared in the step (b 5) into a three-neck flask, heating to 80 ℃ under the stirring speed of 190rpm, reacting at constant temperature for 1 hour, and then adding Span80, sodium carboxymethyl cellulose and deionized water for reacting for 2 hours to prepare the modified defoamer.
Wherein the dosage ratio of chloroplatinic acid to isopropanol in the step (b 1) is 0.1g:80mL; the 1, 2-dibromotetrafluoroethane, rieke Zn, and ethanol solution described in step (b 2) was used in an amount ratio of 0.8g:0.3mg:15mL, the mass fraction of the ethanol solution is 56%; the ratio of the amount of intermediate 1, toluene, catalyst, tetramethyl cyclotetrasiloxane and activated carbon in step (b 3) was 0.5g:2g:0.2mg:0.3g:10mg.
Wherein the dosage ratio of the intermediate 2, 1, 3-tetramethyl-1, 3-disiloxane diol and concentrated sulfuric acid in the step (b 4) is 0.55g:0.3g:5mg, the mass fraction of concentrated sulfuric acid is 95%; the mass ratio of the intermediate 3 to the fatty alcohol-polyoxyethylene ether in the step (b 5) is 2:1, the mass of toluene is 50% of the total mass of the intermediate 3 and the fatty alcohol-polyoxyethylene ether, and the mass of the molecular sieve catalyst is 0.4% of the total mass of the intermediate 3 and the fatty alcohol-polyoxyethylene ether; the dosage ratio of the intermediate 4, the silicon dioxide, the Span80, the sodium carboxymethyl cellulose and the deionized water in the step (b 6) is 6g:4g:0.2g:0.3g:10g.
The preparation method of the modified polyaspartic acid ester comprises the following steps:
step (S1), adding 205g isophorone diamine into a flask, starting stirring at 215rpm, slowly dripping 340g diethyl maleate at room temperature, controlling the reaction temperature to be 40 ℃, and heating to 70 ℃ for reaction for 36 hours for later use;
step (S2), adding 172g of gamma-aminopropyl triethoxysilane into a flask, starting stirring at 220rpm, slowly dripping 172g of diethyl maleate at room temperature, controlling the reaction temperature to be 40 ℃, and heating to 60 ℃ for reaction for 15 hours for later use;
step (S3), 200g of IPDI trimer is added into a flask, stirring is started at 220rpm, 110g of prepared solution in the step (S2) is slowly added at room temperature, the reaction temperature is controlled to be added at 30 ℃, and the temperature is raised to be 60 ℃ for reaction for 3 hours for later use;
adding 530g of the prepared solution in the step (S1) and 60g of butyl acetate into a flask, stirring at 220rpm, uniformly mixing, slowly dropwise adding 180g of the prepared solution in the step (S3) and 20g of butyl acetate into the flask after uniformly mixing at room temperature, slowly and uniformly dripping the mixture, and heating to 60 ℃ for 2 hours after the addition is completed to obtain modified polyaspartic acid ester;
preparation of component B: mixing modified polyaspartic acid ester and amino polydimethylsiloxane in a high-speed stirrer under the protection of high-purity nitrogen at a stirring speed of 400r/min, sequentially adding modified graphene, a dispersing agent TEGO Dispers 757W and a modified defoaming agent, heating to 75 ℃ for reacting for 20 hours, cooling and discharging to obtain a component B;
preparing nano silicon dioxide with the particle size of 40nm and an accelerator Borchikat0243, weighing the nano silicon dioxide and the accelerator Borchikat0243 according to the weight of 5% and 1% of the component B respectively, mixing the nano silicon dioxide and the accelerator Borchikat0243, adding the mixture into a ball milling tank filled with quantitative n-butyl alcohol, and grinding the mixture at the speed of 100r/min for 2 hours to obtain nano slurry;
firstly, mixing the component B with the nano slurry, adding the mixture into a high-speed stirrer, stirring the mixture to be uniform at a stirring speed of 300r/min under the protection of high-purity nitrogen, then adding the component A, stirring the mixture at the stirring speed of 300r/min, and obtaining the impact-resistant protective coating after the mixture is sufficiently uniform.
Example 2
The mass ratio of the component A to the component B is 1:1, a step of;
the raw materials of the component A (weight parts): 48 parts of diisocyanate (a mixture of toluene-2, 4-diisocyanate and toluene-2, 6-diisocyanate in a mass ratio of 1:1.5), 48 parts of POP3628H flame-retardant polyether polyol, 2 parts of diluent n-butyl acetate and 2 parts of flame retardant ammonium polyphosphate;
preparation of component A: the diisocyanate and the flame-retardant polyether polyol are mixed in a high-speed stirrer under the protection of high-purity nitrogen at a stirring speed of 500r/min for reaction for 4 hours at 60 ℃, and then the diluent n-butyl acetate and the flame retardant ammonium polyphosphate are sequentially added and stirred for 4 hours at a speed of 2000r/min to obtain the component A.
The raw materials of the component B (weight portions): 60 parts of modified polyaspartic acid ester, 20 parts of amino polydimethylsiloxane, 2 parts of modified graphene, 15 parts of dispersing agent TEGO Dispers 757W and 3 parts of modified defoamer;
the preparation of the modified graphene was the same as example 1 above;
the preparation of the modified defoamer was the same as in example 1 above;
the preparation of the modified polyaspartic acid ester was the same as in example 1 above;
preparation of component B: mixing modified polyaspartic acid ester and amino polydimethylsiloxane in a high-speed stirrer under the protection of high-purity nitrogen at a stirring speed of 500r/min, sequentially adding modified graphene, a dispersing agent TEGO Dispers 757W and a modified defoaming agent, heating to 70 ℃ for reacting for 18 hours, cooling and discharging to obtain a component B;
preparing nano silicon dioxide with the particle size of 50nm and an accelerator Borchikat0243, weighing the nano silicon dioxide and the accelerator Borchikat0243 according to 2% and 0.5% of the component B respectively, mixing the nano silicon dioxide and the accelerator Borchikat0243, adding the mixture into a ball milling tank filled with quantitative n-butyl alcohol, and grinding the mixture at the speed of 200r/min for 2 hours to obtain nano slurry;
firstly, mixing the component B with the nano slurry, adding the mixture into a high-speed stirrer, stirring the mixture to be uniform at a stirring speed of 500r/min under the protection of high-purity nitrogen, then adding the component A, stirring the mixture at the stirring speed of 500r/min, and obtaining the impact-resistant protective coating after the mixture is sufficiently uniform.
Example 3
The mass ratio of the component A to the component B is 1:1, a step of;
the raw materials of the component A (weight parts): 30 parts of diisocyanate (a mixture of toluene-2, 4-diisocyanate and toluene-2, 6-diisocyanate in a mass ratio of 1:0.5), 60 parts of POP3628H flame-retardant polyether polyol, 5 parts of diluent propylene carbonate and 5 parts of flame retardant melamine polyphosphate;
preparation of component A: the diisocyanate and the flame-retardant polyether polyol are mixed in a high-speed stirrer under the protection of high-purity nitrogen at a stirring speed of 500r/min for reaction for 4 hours at 60 ℃, and then the diluent propylene carbonate and the flame retardant melamine polyphosphate are sequentially added and stirred for 4 hours at a speed of 2000r/min to obtain the component A.
The raw materials of the component B (weight portions): 60 parts of modified polyaspartic acid ester, 27 parts of amino polydimethylsiloxane, 1 part of modified graphene, 10 parts of dispersing agent TEGO Dispers 757W and 2 parts of modified defoamer;
the preparation of the modified graphene was the same as example 1 above;
the preparation of the modified defoamer was the same as in example 1 above;
the preparation of the modified polyaspartic acid ester was the same as in example 1 above;
preparation of component B: mixing modified polyaspartic acid ester and amino polydimethylsiloxane in a high-speed stirrer under the protection of high-purity nitrogen at a stirring speed of 500r/min, sequentially adding modified graphene, a dispersing agent TEGO Dispers 757W and a modified defoaming agent, heating to 70 ℃ for reacting for 18 hours, cooling and discharging to obtain a component B;
preparing nano silicon dioxide with the particle size of 30nm and an accelerator Borchikat0243, weighing the nano silicon dioxide and the accelerator Borchikat0243 according to the weight of 4 percent and 0.8 percent of the component B respectively, mixing the nano silicon dioxide and the accelerator Borchikat0243, adding the mixture into a ball milling tank filled with quantitative n-butyl alcohol, and grinding the mixture at the speed of 150r/min for 2 hours to obtain nano slurry;
firstly, mixing the component B with the nano slurry, adding the mixture into a high-speed stirrer, stirring the mixture to be uniform at a stirring speed of 400r/min under the protection of high-purity nitrogen, then adding the component A, stirring the mixture at the stirring speed of 400r/min, and obtaining the impact-resistant protective coating after the mixture is sufficiently uniform.
The impact-resistant protective coatings prepared in examples 1 to 3 were sprayed on the surface of high-strength steel by an air spray gun, and the performance of the coatings was tested after 10 days, and the test results are shown in table 1. In Table 1, the reference standard for wear resistance is GB/T1768-2006; the reference standard of the adhesive force with 45 steel is GB/T5210-2006, and the used instrument is an American DeFelsko PosiTestAT-A pull-off adhesive force tester; the reference standard of the tensile strength is GB/T528-2009; the reference standard of the tearing strength is GB/T529-2008; the reference standard of salt spray resistance is GB/T1771-2007; the contact angle test method comprises the following steps: the water drop was 5. Mu.L using an OCA25 type contact angle measuring instrument, and the average of 6 random spot measurements was used as the final result.
Table 1 examples 1 to 3 properties of impact-resistant protective coatings for fan blades
As can be seen from the above examples, the impact-resistant protective coating provided by the invention has good hydrophobicity, high flame retardance and extremely high impact resistance, the wear resistance is 10-13 g, the adhesion force with 45 steel is 16.1-17.7 MPa, the tensile strength is 35-40 MPa, the tearing strength is 105-122 kN/m, the UL-94 flame retardance test is V0, the salt fog resistance is 2000h, and the contact angle is 149-154 degrees.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. An impact-resistant protective coating comprises a component A, a component B and nano slurry which are independently packaged;
the preparation raw materials of the component A comprise the following components in parts by weight: 30-50 parts of diisocyanate, 40-60 parts of flame-retardant polyether polyol, 1-5 parts of diluent and 1-5 parts of flame retardant;
the preparation raw materials of the component B comprise the following components in parts by weight: 50-70 parts of modified polyaspartic acid ester, 20-30 parts of amino polydimethylsiloxane, 1-5 parts of modified graphene, 5-15 parts of dispersing agent and 1-5 parts of modified defoaming agent;
the mass ratio of the component A to the component B is 1:1 to 2.
2. The impact resistant protective coating of claim 1, wherein the method of preparing the modified polyaspartic acid ester comprises: respectively reacting isophorone diamine and gamma-aminopropyl triethoxy silane with diethyl maleate to generate two types of polyaspartic acid esters, adding IPDI trimer, and blending to generate modified polyaspartic acid esters.
3. The impact-resistant protective coating according to claim 1, wherein the preparation raw materials of the modified graphene comprise, in parts by weight: 5-25 parts of graphite powder, 70-90 parts of liquid gas, 1-5 parts of modifier, 1-3 parts of water and 1-3 parts of boric acid solution.
4. The impact resistant protective coating according to claim 1, wherein the preparation method of the modified defoamer comprises the following steps: and modifying the defoamer by using chloroplatinic acid, 1, 2-dibromotetrafluoroethane and toluene to obtain the modified defoamer.
5. The impact resistant protective coating of claim 1, wherein the flame retardant polyether polyol comprises one or more of POP3628H polyether polyol and CPOP290E polyether polyol.
6. The impact resistant protective coating of claim 1, wherein the nano-slurry comprises nano-silica and an accelerator.
7. The impact resistant protective coating according to claim 1 or 6, wherein the nano-slurry has a solid content of 30-40%; the mass ratio of the component B to the nano slurry is 1:0.025-0.06.
8. The method for preparing the impact-resistant protective coating according to any one of claims 1 to 7, comprising the steps of:
mixing diisocyanate, flame-retardant polyether polyol, a diluent and a flame retardant, and performing polymerization reaction to obtain a component A;
mixing modified polyaspartic acid ester, amino polydimethylsiloxane, modified graphene, a dispersing agent and a modified defoaming agent, and performing heating treatment to obtain a component B;
when in use, the component A, the component B and the nano slurry are mixed to obtain the impact-resistant protective coating.
9. The method according to claim 8, wherein the polymerization reaction temperature is 60 to 70 ℃; the temperature of the heating treatment is 70-85 ℃.
10. Use of the impact-resistant protective coating according to any one of claims 1 to 7 or the impact-resistant protective coating prepared by the preparation method according to any one of claims 8 to 9 in the field of metal corrosion protection.
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| CN104744707A (en) * | 2015-04-15 | 2015-07-01 | 广州市金铂尔化工有限公司 | Preparation method of siloxane modified polyaspartic acid ester |
| CN109439160A (en) * | 2018-11-14 | 2019-03-08 | 四川嘉宝莉涂料有限公司 | A kind of Polyaspartic Polyurea protective coating, preparation method, application method and application with enhancing mechanical performance |
| CN110746796A (en) * | 2019-11-11 | 2020-02-04 | 长沙天源羲王材料科技有限公司 | Modified graphene and preparation method of slurry containing modified graphene |
| CN113429827A (en) * | 2021-06-22 | 2021-09-24 | 董凯辉 | Preparation method of environment-friendly nano ink |
| CN115181487A (en) * | 2022-06-30 | 2022-10-14 | 星地元新材料股份有限公司 | Concrete floor tortoise crack polymer repairing agent |
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| CN104744707A (en) * | 2015-04-15 | 2015-07-01 | 广州市金铂尔化工有限公司 | Preparation method of siloxane modified polyaspartic acid ester |
| CN109439160A (en) * | 2018-11-14 | 2019-03-08 | 四川嘉宝莉涂料有限公司 | A kind of Polyaspartic Polyurea protective coating, preparation method, application method and application with enhancing mechanical performance |
| CN110746796A (en) * | 2019-11-11 | 2020-02-04 | 长沙天源羲王材料科技有限公司 | Modified graphene and preparation method of slurry containing modified graphene |
| CN113429827A (en) * | 2021-06-22 | 2021-09-24 | 董凯辉 | Preparation method of environment-friendly nano ink |
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