CN116445062A - High-elasticity weather-resistant aqueous polyurea finish paint and preparation method thereof - Google Patents
High-elasticity weather-resistant aqueous polyurea finish paint and preparation method thereof Download PDFInfo
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- 229920002396 Polyurea Polymers 0.000 title claims abstract description 81
- 239000003973 paint Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 239000002105 nanoparticle Substances 0.000 claims abstract description 25
- 239000012948 isocyanate Substances 0.000 claims abstract description 22
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000008367 deionised water Substances 0.000 claims abstract description 13
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 13
- FEWFXBUNENSNBQ-UHFFFAOYSA-N 2-hydroxyacrylic acid Chemical compound OC(=C)C(O)=O FEWFXBUNENSNBQ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000006185 dispersion Substances 0.000 claims abstract description 12
- 239000010705 motor oil Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000006184 cosolvent Substances 0.000 claims abstract description 10
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000012975 dibutyltin dilaurate Substances 0.000 claims abstract description 9
- 238000001291 vacuum drying Methods 0.000 claims abstract description 9
- 239000000080 wetting agent Substances 0.000 claims abstract description 9
- 239000002562 thickening agent Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 7
- 239000012046 mixed solvent Substances 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 34
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 21
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- 239000005543 nano-size silicon particle Substances 0.000 claims description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 230000032683 aging Effects 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 8
- 239000000049 pigment Substances 0.000 claims description 8
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 7
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 6
- 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 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 claims description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 5
- 230000005856 abnormality Effects 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 5
- 239000000645 desinfectant Substances 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 229910014314 BYK190 Inorganic materials 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 abstract description 10
- 239000004814 polyurethane Substances 0.000 abstract description 10
- 239000002253 acid Substances 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 description 7
- 208000008469 Peptic Ulcer Diseases 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- YXRKNIZYMIXSAD-UHFFFAOYSA-N 1,6-diisocyanatohexane Chemical compound O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O YXRKNIZYMIXSAD-UHFFFAOYSA-N 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
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- 125000000524 functional group Chemical group 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 238000007761 roller coating Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- 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
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a high-elasticity weather-proof aqueous polyurea finish paint and a preparation method thereof, relating to the technical field of aqueous polyurethane finish paint, and comprising the following steps: s1, carrying out vacuum drying on the nano particles, then uniformly mixing the nano particles with an isocyanate curing agent according to a set mass ratio, adding a proper amount of mixed solvent after high-speed dispersion, carrying out ultrasonic treatment, heating to a set temperature, adding dibutyl tin dilaurate with a set mass fraction, and carrying out constant-temperature reaction for a set time to obtain a component B of the water-based polyurea finish paint; s2, sequentially adding the hydroxy acrylic acid dispersoid, the powder slurry, the wetting agent, the leveling agent, the cosolvent and the thickening agent into a dispersion tank, and uniformly stirring to obtain a component A of the aqueous polyurea finish; and S3, uniformly mixing the component A and the component B according to a proportion, and adding a proper amount of deionized water for thinning to obtain the water-based polyurea finish paint. The aqueous polyurethane finish paint prepared by the method has the performances of high elasticity, high weather resistance, high wear resistance, high acid and alkali resistance, 84 resistance, engine oil resistance and the like, and is used for but not limited to polyurea substrates.
Description
Technical Field
The invention relates to the technical field of preparation of waterborne polyurethane finish paint, in particular to a high-elasticity weather-resistant waterborne polyurea finish paint and a preparation method thereof.
Background
The technology of spraying polyurea elastomer is widely and widely applied in the fields of corrosion resistance, water resistance, wear resistance and the like due to the characteristics of 100% solid content, high curing speed, excellent physical properties and the like, is firstly used for the bridge deck waterproof engineering of Jingjin inter-city railways in China, and is popularized to the bridge deck waterproof of Jinghu and Dan Wugao iron. However, polyurea is mainly prepared from diphenylmethane diisocyanate (MDI) derivatives and aniline chain extenders, and the molecular chain contains a large amount of benzene rings and amine groups, and the structures are easily oxidized into quinoid structures under illumination, so that the materials change color, and even more, the coatings are damaged, and the service life is shortened. Therefore, in order to prevent the aging of the polyurea material and prolong the service life, the surface of the polyurea must be coated with a weather-resistant finish.
However, on one hand, most polyurea finishing paint on the current market is an oily product, has high VOC content, contains a large amount of toxic solvents such as toluene, xylene and the like, pollutes the environment, and affects the health of constructors. On the other hand, the water-based polyurea finish paint on the market is less, and the performances of high elasticity, high gloss, high weather resistance, high acid and alkali resistance and the like are difficult to achieve.
For example: the aqueous polyurea finish prepared by taking the double-component acrylic polyurethane as the matrix resin has good resistance and ageing resistance, but has poor elongation at break, and the deformation of the polyurea is large along with the change of temperature difference in the long-term use process, so that a paint film is easy to crack or fall off; for another example: the aqueous polyurea finishing paint prepared by taking the aqueous polyurethane PUD or the PUA as the matrix resin has the advantages of larger elongation at break, better toughness, poorer general resistance and ageing resistance, and lower gloss and poorer fullness of paint films prepared by most PUDs and PUAs, thus not achieving good decorative effect. Therefore, the conventional aqueous polyurea finishing coat needs hydroxy acrylic acid dispersoid to mix and splice the aqueous polyurethane PUD, but the tolerance after mixing and splicing is poor, and the ageing resistance is poor.
Disclosure of Invention
The invention aims to provide a high-elasticity weather-proof aqueous polyurea finish paint and a preparation method thereof, wherein the aqueous polyurethane finish paint with high elasticity, high weather resistance, high wear resistance, high acid and alkali resistance, 84 resistance, engine oil resistance and the like is prepared by reacting isocyanate with nano silicon dioxide to prepare a nano silicon dioxide modified aqueous isocyanate curing agent and matching with a hydroxy acrylic acid dispersion, a pigment filler, an auxiliary agent, a cosolvent and the like, and is used for but not limited to polyurea substrates. In order to achieve the above purpose, the present invention provides the following technical solutions:
according to one aspect of the present disclosure, there is provided a method for preparing a high-elasticity weather-resistant aqueous polyurea topcoat, the method comprising the steps of:
s1, preparing a component B of the aqueous polyurea finish: the method comprises the steps of carrying out vacuum drying on nanoparticles, carrying out water removal treatment, uniformly mixing the nanoparticles with an isocyanate curing agent according to a set mass ratio, dispersing at a high speed, adding a proper amount of mixed solvent, carrying out ultrasonic treatment, heating to a set temperature, adding dibutyl tin dilaurate with a set mass fraction, and carrying out constant-temperature reaction for a set time to obtain a nanoparticle modified waterborne isocyanate curing agent, namely a component B of a waterborne polyurea finish;
s2, preparing a component A of the aqueous polyurea finish: sequentially adding the hydroxy acrylic acid dispersoid, the powder slurry, the wetting agent, the leveling agent, the cosolvent and the thickening agent into a dispersion tank, and uniformly stirring to obtain a component A of the aqueous polyurea finish;
s3, preparing water-based polyurea finish paint: and uniformly mixing the component A and the component B according to a proportion, and adding a proper amount of deionized water for thinning to obtain the water-based polyurea finish paint.
In one possible embodiment, the nanoparticles in step S1 are nano silica or nano titania; the isocyanate curing agent is one of HDI (hexamethylene diisocyanate), TDI (toluene diisocyanate) or IPDI (isophorone diisocyanate).
In one possible embodiment, the vacuum drying conditions in the step S1 include:
the temperature is more than or equal to 100 ℃ and the time is 10 to 12 hours.
In a possible implementation manner, the set mass ratio in the step S1 is 0.5:1 to 1:1; setting the temperature to be 80-100 ℃; the mass fraction is set to be 0.5% -0.8%; setting the time to be 4-5 h.
In one possible embodiment, the mixed solvent in the step S1 is toluene and N, N-dimethylformamide, and the volume ratio is 1:1.
in one possible embodiment, the preparation method of the powder slurry in the step S2 includes the following steps:
adding deionized water, a dispersing agent, a defoaming agent, an anti-settling agent, pigment and filler into a grinding tank in sequence, stirring uniformly, adding a proper amount of zirconium beads, increasing the rotating speed to 2500-3000 r/min, and grinding until the fineness is less than or equal to 20 mu m to obtain powder slurry.
In one possible embodiment, the ingredients and contents of the powder slurry include, in mass percent:
the dosage of the deionized water is 36-39%;
the dispersing agent is one or more of BYK190, digao 755W and BYK2012, and the dosage is 2% -3%;
the defoamer is one or more of digao 810, BYK901W and EFKA2526, and the dosage is 0.2% -0.4%;
the anti-settling agent is one or more of Haimasch LT, haimasch DYCE and BYK-RDS, and the dosage is 0.2% -0.4%;
the pigment is one or more of titanium dioxide, duPont 902, duPont 706 and python 996, and the dosage is 37-39%;
the filler is precipitated barium sulfate, and the dosage is 19% -22%.
In one possible embodiment, the components and contents of the aqueous polyurea top-coat paint a component include, in mass percent:
the hydroxyl acrylic acid dispersoid is one or more of Wanhua 2043, wanhua 2036 and flower and fruit mountain 5032, and the dosage is 55% -65%;
the consumption of the powder slurry is 35% -45%;
the wetting agent is one or more of Digao 4100, BYK348 and BYK349, and the dosage is 0.1-0.3%
The leveling agent is one or more of BYK342, BYK3760, BYK349 and Basf 3455, and the dosage is 0.3-0.6%
The cosolvent is one or more of dipropylene glycol methyl ether (DPM), N-methyl pyrrolidone (NMP) and diethylene glycol butyl ether (DEGB), and the dosage is 3-8%;
the thickening agent is one or more of 299 of Haiminsi, 7420 of BYK and 7625 of BYK, and the dosage is 0.3-0.6%.
In one possible embodiment, the mass ratio of the a component to the B component is a: b=3: 1 to 7:1.
according to one aspect of the present disclosure, there is provided a high-elasticity weather-resistant aqueous polyurea top-coat, prepared by the above method, the performances of the high-elasticity weather-resistant aqueous polyurea top-coat include:
ultraviolet aging resistance is more than or equal to 3000 hours; the elongation at break is more than or equal to 200%; 10% sodium hydroxide resistance is not less than 30 days; 10% sulfuric acid resistance is more than or equal to 30 days, 84 disinfectant resistance is more than or equal to 30 days; the engine oil resistance is more than or equal to 30 days; the water resistance (40 ℃) is more than or equal to 180 days; the engine oil resistance is more than or equal to 180d; the wear resistance is less than or equal to 10mg; bending properties (Φ10mm): bending at less than or equal to-50 ℃ is free from abnormality.
The invention has the technical effects and advantages that:
firstly, compared with the conventional preparation method of the polyurea finish (hydroxyl acrylic dispersion mixed waterborne polyurethane PUD), the preparation method of the invention can meet the requirements of the polyurea finish on high elasticity, high resistance, high ageing resistance and the like without compounding, and the problems of poor resistance and poor ageing resistance are greatly solved.
Secondly, the nano silicon dioxide is grafted into the molecular chain effectively by preparing the nano silicon dioxide modified water-based isocyanate curing agent, so that the bonding stability between polymer macromolecules and inorganic nanoparticles is enhanced, the dispersing effect of the nanoparticles is improved, the characteristics of organic, inorganic and nanoparticles are combined, and finally the paint film is endowed with the comprehensive properties of high elasticity, high chemical resistance and high wear resistance.
Thirdly, the water-based polyurea finishing paint prepared by the invention can reach ultraviolet aging resistance of more than or equal to 3000 hours; the elongation at break is more than or equal to 200%; 10% sodium hydroxide resistance is not less than 30 days; 10% sulfuric acid resistance is more than or equal to 30 days, 84 disinfectant resistance is more than or equal to 30 days; the engine oil resistance is more than or equal to 30 days; the water resistance (40 ℃) is more than or equal to 180 days; the engine oil resistance is more than or equal to 180d; the wear resistance is less than or equal to 10mg; bending properties (Φ10mm): bending at less than or equal to-50 ℃ is free from abnormality.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a schematic flow chart of a preparation method of the high-elasticity weather-resistant aqueous polyurea finish paint.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The design concept of the invention is as follows: (1) The synthesis method of the nanoparticle modified water-based isocyanate curing agent comprises the following steps: the nano particles are subjected to high-speed mechanical dispersion with an isocyanate curing agent after being dehydrated, toluene/N, N-dimethylformamide mixed solution is used as a solvent, DBTDL (dibutyl tin dilaurate) is used as a catalyst, and the nano particle modified waterborne isocyanate curing agent is prepared after the reaction is carried out for 4-5 hours at 80 ℃. (2) The preparation method of the high-elasticity weather-resistant aqueous polyurea finish paint comprises the following steps: the nanoparticle modified water-based isocyanate curing agent is matched with the hydroxy acrylic acid dispersoid, and certain pigment, auxiliary agent, cosolvent and the like are assisted to prepare the high-elasticity weather-resistant finish paint, and the finish paint coating can achieve the purposes of resisting ultraviolet ageing for 3000 hours, having the elongation at break of 200%, resisting 10% sodium hydroxide for more than or equal to 30 days, resisting 10% sulfuric acid for more than or equal to 30 days, resisting 84 disinfectant for more than or equal to 30 days, resisting engine oil for more than or equal to 30 days, resisting water for more than or equal to 180 days and resisting wear for less than or equal to 10mg.
The principle of the invention is as follows: through the reaction of the isocyanate curing agent and active functional groups such as hydroxyl groups on the surfaces of the nano particles, the nano particles are more easily dispersed in gaps of a high polymer chain, and the strength, the toughness, the ductility and the like of the material are improved by the bonding force with polyurethane, so that the coating is effective by penetrating into the vicinity of unsaturated bonds of the polyurethane molecular chain due to the silt-permeation effect of quantum size and macroscopic quantum tunnel effect, and the elasticity, the weather resistance, the chemical resistance, the wear resistance and the like of the coating are effectively improved.
Fig. 1 is a schematic flow chart of a preparation method of a high-elasticity weather-resistant aqueous polyurea finish paint, and as shown in fig. 1, the invention provides a preparation method of a high-elasticity weather-resistant aqueous polyurea finish paint, which comprises the following steps:
s1, preparing a component B of the aqueous polyurea finish: the method comprises the steps of carrying out vacuum drying on nanoparticles, carrying out water removal treatment, uniformly mixing the nanoparticles with an isocyanate curing agent according to a set mass ratio, dispersing at a high speed, adding a proper amount of mixed solvent, carrying out ultrasonic treatment, heating to a set temperature, adding dibutyl tin dilaurate with a set mass fraction, and carrying out constant-temperature reaction for a set time to obtain a nanoparticle modified waterborne isocyanate curing agent, namely a component B of a waterborne polyurea finish;
s2, preparing a component A of the aqueous polyurea finish: sequentially adding the hydroxy acrylic acid dispersoid, the powder slurry, the wetting agent, the leveling agent, the cosolvent and the thickening agent into a dispersion tank, and uniformly stirring to obtain a component A of the aqueous polyurea finish;
s3, preparing water-based polyurea finish paint: and uniformly mixing the component A and the component B according to a proportion, and adding a proper amount of deionized water for thinning to obtain the water-based polyurea finish paint.
In step S1 of the present invention, specifically: vacuum drying the nano particles for 10-12h at 100 ℃ or more, carrying out water removal treatment, uniformly mixing the treated nano particles with an isocyanate curing agent according to the mass ratio of 0.5:1-1:1, dispersing at high speed for 20-30 min by 2500-3000 r/min (preferably 3000 r/min), transferring into a four-neck flask, adding a proper amount of toluene/N, N-dimethylformamide (1:1) mixed solution, carrying out ultrasonic treatment for 20-30 min, heating to 80-100 ℃ (preferably 80 ℃), adding dibutyl tin dilaurate with the mass fraction of 0.5% -0.8% (preferably 0.5%), and carrying out constant-temperature reaction for 4-5h to obtain the nano silicon dioxide modified water-based isocyanate curing agent, namely the water-based finishing paint polyurea B component.
The nano particles in the step S1 are nano silicon dioxide or nano titanium dioxide, preferably nano silicon dioxide; the isocyanate curing agent is one of HDI (hexamethylene diisocyanate), TDI (toluene diisocyanate) or IPDI (isophorone diisocyanate), and is preferably HDI (hexamethylene diisocyanate).
In step S2 of the present invention, steps S21 and S22 are included, specifically:
step S21, preparing powder slurry: adding deionized water, a dispersing agent, a defoaming agent, an anti-settling agent, pigment and filler into a grinding tank in sequence, stirring uniformly, adding a proper amount of zirconium beads, increasing the rotating speed to 2500-3000 r/min (preferably 3000 r/min), and grinding until the fineness is less than or equal to 20 mu m to obtain powder slurry; wherein, the liquid crystal display device comprises a liquid crystal display device,
the dosage of deionized water is 36-39%;
the dispersant is one or more of BYK190, digao 755W and BYK2012, and the dosage is 2% -3%;
the defoamer is one or more of digao 810, BYK901W and EFKA2526, and the dosage is 0.2-0.4%; the anti-settling agent is one or more of Haimasch LT, haimasch DYCE and BYK-RDS, and the dosage is 0.2% -0.4%; the pigment is one or more of titanium dioxide, duPont 902, duPont 706 and python 996, and the dosage is 37-39%; the filler is precipitated barium sulfate, and the dosage is 19-22%.
S22, preparing a component A of the aqueous polyurea finish: sequentially adding the hydroxy acrylic acid dispersoid, the powder slurry, the wetting agent, the flatting agent, the cosolvent, the thickening agent and the like into a dispersion tank, and uniformly stirring to obtain a component A of the aqueous polyurea finish; wherein, the hydroxyl acrylic acid dispersoid is one or more of Wanhua 2043, wanhua 2036 and flower and fruit mountain 5032, and the dosage is 55-65%;
the powder slurry is prepared by the method, and the dosage is 35-45%;
the wetting agent is one or more of Digao 4100, BYK348 and BYK349, and the dosage is 0.1-0.3%;
the leveling agent is one or more of BYK342, BYK3760, BYK349 and Basf 3455, and the dosage is 0.3% -0.6%;
the cosolvent is one or more of dipropylene glycol methyl ether (DPM), N-methyl pyrrolidone (NMP) and diethylene glycol butyl ether (DEGB), and the dosage is 3-8%;
the thickening agent is one or more of 299 of Haiminsi, 7420 of BYK and 7625 of BYK, and the dosage is 0.3-0.6%.
In step S3 of the present invention, specifically: the A component and the B component prepared above are prepared according to the formula A: and (B=3:1-7:1) and uniformly mixing, adding a proper amount of deionized water, and diluting to obtain the water-based polyurea finish paint.
And the performance of the coating is tested after the coating is dried completely by adopting a spray coating, brush coating or roller coating mode to coat on polyurea, carbon steel and tinplate base materials.
Example 1:
s1, preparing a component B of the aqueous polyurea finish: vacuum drying nano silicon dioxide for 12 hours at 100 ℃, carrying out water removal treatment, uniformly mixing the treated nano silicon dioxide and an HDI trimer according to the mass ratio of 0.5:1, dispersing at a high speed of 3000r/min for 25min, transferring into a four-mouth flask, adding a proper amount of toluene/N, N-dimethylformamide (1:1) mixed solution, carrying out ultrasonic treatment for 30min, heating to 80 ℃, adding 0.5% of dibutyltin dilaurate by mass fraction, and carrying out constant-temperature reaction for 5 hours to obtain the nano silicon dioxide modified water-based isocyanate curing agent B.
S2, preparing a component A of the aqueous polyurea finish:
step S21, preparing powder slurry: adding 37% deionized water, 2% dispersing agent BYK-2022 and 0.3% defoaming agent EFKA2526 into a grinding tank in sequence, stirring uniformly at 1500 rpm, adding 0.3% anti-settling agent Hamming DYCE under stirring, stirring for 15min, gradually and slowly adding 38% DuPont titanium dioxide R902 and 20% precipitated barium sulfate, adding a proper amount of zirconium beads, and under the condition of passing cooling water, increasing the rotating speed to 3000 rpm, grinding until the powder slurry fineness is less than or equal to 20 mu m, filtering to remove the zirconium beads, and obtaining powder slurry.
S22, preparing a component A of the aqueous polyurea finish: taking 55% of hydroxyl acrylic dispersion 2043 in a dispersion tank, regulating the rotating speed to 800 revolutions per minute, sequentially and slowly adding 39% of the grinding powder slurry, 0.2% of wetting agent Di-Gao 4100, 0.4% of flatting agent BYK349, 2% of DPM and 3% of DEGB, stirring for 10-15 minutes, adding 0.4% of Haimines 299 to regulate to proper viscosity, and finally stirring for 30 minutes to obtain the aqueous polyurea finish A component.
S3, preparing water-based polyurea finish paint: mixing the component A and the component B according to the mass ratio of 5:1, stirring uniformly, adding a proper amount of deionized water, adjusting the viscosity to 25-30 s (coating-4 cups), spraying on a polyurea substrate prepared in advance, and testing the performance after natural curing for 7 d.
Example 2:
uniformly mixing the treated nano silicon dioxide and the HDI trimer according to the mass ratio of 0.8:1;
except for this, the other steps were the same as those in example 1.
Example 3:
uniformly mixing the treated nano silicon dioxide and the HDI trimer according to the mass ratio of 1:1;
except for this, the other steps were the same as those in example 1.
Comparative example 1:
in the step S1, the preparation of the component B of the aqueous polyurea finish paint: vacuum drying nano silicon dioxide for 12 hours at 100 ℃, carrying out water removal treatment, uniformly mixing the treated nano silicon dioxide and an HDI trimer according to the mass ratio of 0.5:1, dispersing at a high speed of 3000r/min for 25min, transferring into a four-mouth flask, adding a proper amount of toluene/N, N-dimethylformamide (1:1) mixed solution, carrying out ultrasonic treatment for 30min, carrying out no heating reaction process, and carrying out constant temperature reaction for 5 hours after pure physical mixing of two materials without adding catalyst dibutyltin dilaurate, thus obtaining the nano silicon dioxide modified water-based isocyanate curing agent B;
except for this, the other steps were the same as those in example 1.
Comparative example 2:
in the step S2, preparing the component A of the aqueous polyurea finish, replacing a hydroxy acrylic dispersion in the component A of the aqueous polyurea finish by using PUD emulsion Wanhua 6136;
except for this, the other steps were the same as those in example 1.
Comparative example 3:
in the step S2, preparing the component A of the aqueous polyurea finish, wherein hydroxyl acrylic acid dispersoid in the component A of the aqueous polyurea finish is mixed with PUD emulsion Wanhua 6136 by Wanhua 2043, namely 2043:6136 =1: 1, a step of;
except for this, the other steps were the same as those in example 1.
Table 1 performance test of each of examples and comparative examples
Table 1 shows the performance test results of each example and comparative example, and as shown in Table 1, the aqueous polyurea finish prepared by the invention can reach ultraviolet aging resistance of more than or equal to 3000 hours; the elongation at break is more than or equal to 200%; 10% sodium hydroxide resistance is not less than 30 days; 10% sulfuric acid resistance is more than or equal to 30 days, 84 disinfectant resistance is more than or equal to 30 days; the engine oil resistance is more than or equal to 30 days; the water resistance (40 ℃) is more than or equal to 180 days; the engine oil resistance is more than or equal to 180d; the wear resistance is less than or equal to 10mg; bending properties (Φ10mm): bending at less than or equal to-50 ℃ is free from abnormality. After the aqueous polyurea finish paint prepared by the method is coated on polyurea, repeated bending and folding are carried out for more than or equal to 1000 times without abnormality, and bending is not abnormal under the low temperature condition (phi 10 mm) of less than or equal to-50 ℃, which indicates that the weather-resistant aqueous polyurea finish paint prepared by the method has high elasticity.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The preparation method of the high-elasticity weather-resistant aqueous polyurea finish paint is characterized by comprising the following steps of:
s1, preparing a component B of the aqueous polyurea finish: the method comprises the steps of carrying out vacuum drying on nanoparticles, carrying out water removal treatment, uniformly mixing the nanoparticles with an isocyanate curing agent according to a set mass ratio, dispersing at a high speed, adding a proper amount of mixed solvent, carrying out ultrasonic treatment, heating to a set temperature, adding dibutyl tin dilaurate with a set mass fraction, and carrying out constant-temperature reaction for a set time to obtain a nanoparticle modified waterborne isocyanate curing agent, namely a component B of a waterborne polyurea finish;
s2, preparing a component A of the aqueous polyurea finish: sequentially adding the hydroxy acrylic acid dispersoid, the powder slurry, the wetting agent, the leveling agent, the cosolvent and the thickening agent into a dispersion tank, and uniformly stirring to obtain a component A of the aqueous polyurea finish;
s3, preparing water-based polyurea finish paint: and uniformly mixing the component A and the component B according to a proportion, and adding a proper amount of deionized water for thinning to obtain the water-based polyurea finish paint.
2. The method for preparing the high-elasticity weather-resistant aqueous polyurea finish paint according to claim 1, wherein the nanoparticles in the step S1 are nano silicon dioxide or nano titanium dioxide; the isocyanate curing agent is one of HDI (hexamethylene diisocyanate), TDI (toluene diisocyanate) or IPDI (isophorone diisocyanate).
3. The method for preparing the high-elasticity weather-resistant aqueous polyurea finish according to claim 1 or 2, wherein the vacuum drying conditions in the step S1 include:
the temperature is more than or equal to 100 ℃ and the time is 10 to 12 hours.
4. The method for preparing the high-elasticity weather-resistant aqueous polyurea finish paint according to claim 2, wherein the set mass ratio in the step S1 is 0.5:1-1:1; setting the temperature to be 80-100 ℃; the mass fraction is set to be 0.5% -0.8%; setting the time to be 4-5 h.
5. The method for preparing the high-elasticity weather-resistant aqueous polyurea finish paint according to claim 1, wherein the mixed solvent in the step S1 is toluene and N, N-dimethylformamide, and the volume ratio is 1:1.
6. the method for preparing the high-elasticity weather-resistant aqueous polyurea finish paint according to claim 1, wherein the method for preparing the powder slurry in the step S2 comprises the following steps:
adding deionized water, a dispersing agent, a defoaming agent, an anti-settling agent, pigment and filler into a grinding tank in sequence, stirring uniformly, adding a proper amount of zirconium beads, increasing the rotating speed to 2500-3000 r/min, and grinding until the fineness is less than or equal to 20 mu m to obtain powder slurry.
7. The method for preparing the high-elasticity weather-resistant aqueous polyurea finish paint according to claim 6, wherein the components and the contents of the powder slurry comprise, in mass percent:
the dosage of the deionized water is 36-39%;
the dispersing agent is one or more of BYK190, digao 755W and BYK2012, and the dosage is 2% -3%;
the defoamer is one or more of digao 810, BYK901W and EFKA2526, and the dosage is 0.2% -0.4%;
the anti-settling agent is one or more of Haimasch LT, haimasch DYCE and BYK-RDS, and the dosage is 0.2% -0.4%;
the pigment is one or more of titanium dioxide, duPont 902, duPont 706 and python 996, and the dosage is 37-39%;
the filler is precipitated barium sulfate, and the dosage is 19% -22%.
8. The preparation method of the high-elasticity weather-resistant aqueous polyurea finishing paint as claimed in claim 7, wherein the components and contents of the aqueous polyurea finishing paint A comprise, in mass percent:
the hydroxyl acrylic acid dispersoid is one or more of Wanhua 2043, wanhua 2036 and flower and fruit mountain 5032, and the dosage is 55% -65%;
the consumption of the powder slurry is 35% -45%;
the wetting agent is one or more of Digao 4100, BYK348 and BYK349, and the dosage is 0.1-0.3%
The leveling agent is one or more of BYK342, BYK3760, BYK349 and Basf 3455, and the dosage is 0.3-0.6%
The cosolvent is one or more of dipropylene glycol methyl ether (DPM), N-methyl pyrrolidone (NMP) and diethylene glycol butyl ether (DEGB), and the dosage is 3-8%;
the thickening agent is one or more of 299 of Haiminsi, 7420 of BYK and 7625 of BYK, and the dosage is 0.3-0.6%.
9. The preparation method of the high-elasticity weather-resistant aqueous polyurea finishing paint according to claim 1, wherein the mass ratio of the component A to the component B is: b=3: 1 to 7:1.
10. the high-elasticity weather-resistant aqueous polyurea finish paint prepared by the method according to any one of claims 1 to 9, wherein the performances of the high-elasticity weather-resistant aqueous polyurea finish paint comprise:
ultraviolet aging resistance is more than or equal to 3000 hours; the elongation at break is more than or equal to 200%; 10% sodium hydroxide resistance is not less than 30 days; 10% sulfuric acid resistance is more than or equal to 30 days, 84 disinfectant resistance is more than or equal to 30 days; the engine oil resistance is more than or equal to 30 days; the water resistance (40 ℃) is more than or equal to 180 days; the engine oil resistance is more than or equal to 180d; the wear resistance is less than or equal to 10mg; bending properties (Φ10mm): bending at less than or equal to-50 ℃ is free from abnormality.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102449014A (en) * | 2009-03-31 | 2012-05-09 | 拜尔材料科学股份公司 | Novel aqueous 2K PUR coating systems for improved corrosion protection |
| CN102449015A (en) * | 2009-03-31 | 2012-05-09 | 拜尔材料科学股份公司 | Nanoparticle modified hydrophilic polyisocyanates |
| CN108676480A (en) * | 2018-04-02 | 2018-10-19 | 华南理工大学 | A kind of double-component aqueous acroleic acid polyurethane coating and preparation method thereof |
| CN109988495A (en) * | 2019-03-29 | 2019-07-09 | 华南理工大学 | Nano-material modified aqueous polyisocyanate curing agent and preparation and application |
| CN111423775A (en) * | 2019-12-26 | 2020-07-17 | 浙江潘季新材料股份有限公司 | Single-component water-based finishing varnish and preparation method thereof |
-
2023
- 2023-02-03 CN CN202310098679.1A patent/CN116445062A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102449014A (en) * | 2009-03-31 | 2012-05-09 | 拜尔材料科学股份公司 | Novel aqueous 2K PUR coating systems for improved corrosion protection |
| CN102449015A (en) * | 2009-03-31 | 2012-05-09 | 拜尔材料科学股份公司 | Nanoparticle modified hydrophilic polyisocyanates |
| CN108676480A (en) * | 2018-04-02 | 2018-10-19 | 华南理工大学 | A kind of double-component aqueous acroleic acid polyurethane coating and preparation method thereof |
| CN109988495A (en) * | 2019-03-29 | 2019-07-09 | 华南理工大学 | Nano-material modified aqueous polyisocyanate curing agent and preparation and application |
| CN111423775A (en) * | 2019-12-26 | 2020-07-17 | 浙江潘季新材料股份有限公司 | Single-component water-based finishing varnish and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 颜爱军等: ""异氰酸酯改性纳米粒子的制备方法与应用"", 《聚氨酯工业》, vol. 2014, no. 1, 28 February 2014 (2014-02-28), pages 1 - 5 * |
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