CN113831792A - Water-based paint composition and preparation method thereof - Google Patents
Water-based paint composition and preparation method thereof Download PDFInfo
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- CN113831792A CN113831792A CN202010514217.XA CN202010514217A CN113831792A CN 113831792 A CN113831792 A CN 113831792A CN 202010514217 A CN202010514217 A CN 202010514217A CN 113831792 A CN113831792 A CN 113831792A
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- waterborne
- water
- polyurethane
- resin
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000000203 mixture Substances 0.000 title abstract description 31
- 239000003973 paint Substances 0.000 title abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 21
- 229920002635 polyurethane Polymers 0.000 claims abstract description 72
- 239000004814 polyurethane Substances 0.000 claims abstract description 72
- 239000002562 thickening agent Substances 0.000 claims abstract description 65
- -1 lauryl alcohol ester Chemical class 0.000 claims abstract description 52
- 229920005989 resin Polymers 0.000 claims abstract description 47
- 239000011347 resin Substances 0.000 claims abstract description 47
- COCLLEMEIJQBAG-UHFFFAOYSA-N 8-methylnonyl 2-methylprop-2-enoate Chemical compound CC(C)CCCCCCCOC(=O)C(C)=C COCLLEMEIJQBAG-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229920002050 silicone resin Polymers 0.000 claims abstract description 41
- 239000000839 emulsion Substances 0.000 claims abstract description 39
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 35
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 35
- 239000001993 wax Substances 0.000 claims abstract description 35
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 31
- 239000004611 light stabiliser Substances 0.000 claims abstract description 28
- 229920002907 Guar gum Polymers 0.000 claims abstract description 27
- 125000000129 anionic group Chemical group 0.000 claims abstract description 27
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 27
- TVFJAZCVMOXQRK-UHFFFAOYSA-N ethenyl 7,7-dimethyloctanoate Chemical compound CC(C)(C)CCCCCC(=O)OC=C TVFJAZCVMOXQRK-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000665 guar gum Substances 0.000 claims abstract description 27
- 229960002154 guar gum Drugs 0.000 claims abstract description 27
- 235000010417 guar gum Nutrition 0.000 claims abstract description 27
- VUWCWMOCWKCZTA-UHFFFAOYSA-N 1,2-thiazol-4-one Chemical class O=C1CSN=C1 VUWCWMOCWKCZTA-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004695 Polyether sulfone Substances 0.000 claims abstract description 19
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 19
- 239000004094 surface-active agent Substances 0.000 claims abstract description 19
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 claims abstract description 19
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 claims abstract description 19
- 235000012141 vanillin Nutrition 0.000 claims abstract description 19
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 17
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 24
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 24
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 24
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 24
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 24
- 239000008199 coating composition Substances 0.000 claims description 23
- 239000000178 monomer Substances 0.000 claims description 18
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 16
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 14
- 230000008719 thickening Effects 0.000 claims description 14
- PSGAAPLEWMOORI-PEINSRQWSA-N medroxyprogesterone acetate Chemical compound C([C@@]12C)CC(=O)C=C1[C@@H](C)C[C@@H]1[C@@H]2CC[C@]2(C)[C@@](OC(C)=O)(C(C)=O)CC[C@H]21 PSGAAPLEWMOORI-PEINSRQWSA-N 0.000 claims description 13
- 229920000058 polyacrylate Polymers 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 9
- 229920000604 Polyethylene Glycol 200 Polymers 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 239000003093 cationic surfactant Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000010907 mechanical stirring Methods 0.000 claims description 8
- 239000000693 micelle Substances 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000004971 Cross linker Substances 0.000 claims description 4
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 125000004069 aziridinyl group Chemical group 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 59
- 239000011248 coating agent Substances 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 15
- 239000003795 chemical substances by application Substances 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 8
- 229940124543 ultraviolet light absorber Drugs 0.000 description 7
- YPIFGDQKSSMYHQ-UHFFFAOYSA-M 7,7-dimethyloctanoate Chemical compound CC(C)(C)CCCCCC([O-])=O YPIFGDQKSSMYHQ-UHFFFAOYSA-M 0.000 description 6
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical group C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction 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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- 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
- C09D7/43—Thickening agents
-
- 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
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a water-based paint composition and a preparation method thereof, wherein the water-based paint composition comprises the following raw materials: anionic waterborne polyurethane containing carboxyl, waterborne polyether sulfone resin, polyurethane crosslinking agent, waterborne silicone resin, isodecyl methacrylate, guar gum, thickening agent, vinyl neodecanoate, surfactant, waterborne fluorocarbon resin, vanillin, light stabilizer, isopropanol, polyvinyl formal, lauryl alcohol ester, isothiazolinone derivative, silicone-acrylic emulsion, polytetrafluoroethylene and wax assistant. The water-based paint composition has the advantages of environmental protection, energy conservation and good stability, and can be used for a long time.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a water-based coating composition and a preparation method thereof.
Background
The coating is traditionally named as paint in China. The coating is a continuous film which is coated on the surface of an object to be protected or decorated and can form firm adhesion with the object to be coated, and is a viscous liquid which is prepared by taking resin, oil or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding auxiliaries and using an organic solvent or water.
The development of a coating with better dust pick-up resistance remains an important goal in the paint industry. Reasons for this include the growing industry of "softer" elastomer walls and roof coatings; these industries require low Volatile Organic Compound (VOC) formulations, which traditionally result in more viscous coatings due to reduced glass transition temperature (Tg); and the interior finishing of the construction of high-rise commercial buildings planned in emerging areas, most notably in asia, continues to push the need for coatings that are easier to clean, more visually tactile and maintain. How to improve the retention property while ensuring the quality of the coating is very important.
Disclosure of Invention
The invention aims to provide a water-based paint composition and a preparation method thereof, and aims to solve the problem of how to improve paint retentivity.
In order to achieve the purpose, the invention provides the following technical scheme:
an aqueous coating composition comprising the following raw materials: anionic waterborne polyurethane containing carboxyl, waterborne polyether sulfone resin, polyurethane crosslinking agent, waterborne silicone resin, isodecyl methacrylate, guar gum, thickening agent, vinyl neodecanoate, surfactant, waterborne fluorocarbon resin, vanillin, light stabilizer, isopropanol, polyvinyl formal, lauryl alcohol ester, isothiazolinone derivative, silicone-acrylic emulsion, polytetrafluoroethylene and wax assistant;
the weight ratio of the thickening agent to the water-based silicone resin to the silicone-acrylate emulsion is (1.2-2) to (2-8) to (2-10);
the thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association;
the water-based silicone resin is Orlixing FSP series water-soluble liquid resin and is an alkaline aqueous solution.
Preferably, the weight ratio of the thickening agent to the water-based silicone resin to the silicone-acrylate emulsion is 1.5:6: 8. The particle size of the silicone-acrylate emulsion is 50 nm.
Preferably, the water-based paint composition comprises the following raw materials in parts by weight: 14-20 parts of carboxyl-containing anionic waterborne polyurethane, 11-17 parts of waterborne polyether sulfone resin, 2-10 parts of polyurethane cross-linking agent, 2-8 parts of waterborne silicone resin, 3-5 parts of isodecyl methacrylate, 6-8 parts of guar gum, 1.2-2 parts of thickening agent, 1-7 parts of vinyl neodecanoate, 8-9 parts of surfactant, 20-35 parts of waterborne fluorocarbon resin, 5-8 parts of vanillin, 3-5 parts of light stabilizer, 5-7 parts of isopropanol, 2-3.5 parts of polyvinyl formal, 2-6 parts of decaglycol ester, 4-6 parts of isothiazolinone derivative, 2-10 parts of silicone-acrylate emulsion, 3.5-8 parts of polytetrafluoroethylene and 2-7 parts of wax assistant.
Preferably, the synthesis of the anionic waterborne polyurethane containing carboxyl is carried out by dispersing DMPA in PEG200 and butanone and then catalyzing with TDI.
Preferably, the surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.
Preferably, the polyurethane crosslinker is an aziridinyl terminated polyurethane crosslinker.
Preferably, the polytetrafluoroethylene contains tetrafluoroethylene units or tetrafluoroethylene units and modified monomer units based on a modified monomer copolymerizable with the above tetrafluoroethylene, and the polytetrafluoroethylene powder has a specific surface area of 40m2More than g.
Preferably, the light stabilizer is an ultraviolet light absorber UV531, and the wax assistant is an aqueous OPV gloss oil wax preparation.
The invention also provides a preparation method of the water-based paint composition, which comprises the following steps:
step 1: placing isodecyl methacrylate, guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of that of a reaction system, and stirring at 30-40 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate, the guar gum, the thickening agent and the vinyl neodecanoate;
step 2: heating to 75-80 ℃ and reacting for 2 h;
and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;
and 4, step 4: cooling to 30-40 ℃, adding polyvinyl formal, dodecyl ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;
and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;
step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.
Compared with the prior art, the invention has the following beneficial effects:
(1) as can be seen from the data of examples 1-6 and comparative examples 1-3, the performance of the coating mixture of examples 1-6 is significantly improved, and the retention of the coating by adding the thickener, the water-based silicone resin and the silicone-acrylate emulsion to the raw materials is significantly improved. Meanwhile, the thickening agent, the water-based silicone resin and the silicone-acrylate emulsion are added into the raw materials to play a synergistic role, so that the retentivity of the coating is effectively improved, which may be: the thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, the thickening effect is achieved through intermolecular association, the medium and high shear viscosity can be effectively improved, the thickening ratio is proper, the excellent flowing and leveling property and the gloss showing property are endowed to the inner and outer wall coatings, and the film forming property is improved. The thickening agent and the water-based silicone resin interact to improve the adhesive force of the coating mixture, the thickening agent has better thickening effect on 50nm fine-particle-size silicone-acrylate emulsion, and good leveling property and coating film fullness are provided. In addition, the aqueous silicone resin and the thickening agent have excellent formula compatibility, can effectively improve high-shear viscosity, and have excellent coating film fullness, splash resistance, water resistance and water diversion resistance. The silicone-acrylic emulsion has strong adsorption effect on the thickening agent, and can improve the stability of the high-coating mixture after solidification. The water-based emulsion formed by graft copolymerization of the acrylate component and the organic silicon monomer in the silicone-acrylate emulsion can promote the adhesive force of the coating.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A water-based paint composition is prepared from the following raw materials in parts by weight:
20 parts of carboxyl-containing anionic waterborne polyurethane, 15 parts of waterborne polyether sulfone resin, 4 parts of polyurethane cross-linking agent (B), 6 parts of waterborne silicone resin, 4 parts of isodecyl methacrylate (IDMA), 5 parts of guar gum, 1.5 parts of thickening agent, 2 parts of vinyl neodecanoate (NEO10), 8 parts of surfactant, 21 parts of waterborne fluorocarbon resin, 6 parts of vanillin, 4 parts of light stabilizer, 6 parts of isopropanol, 2.5 parts of polyvinyl formal, 5 parts of dodecanol ester, 4 parts of isothiazolinone derivative, 8 parts of silicone-acrylic emulsion, 6 parts of polytetrafluoroethylene and 5 parts of wax assistant.
The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.
The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.
The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.
The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m2More than g.
The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.
The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.
The light stabilizer is ultraviolet light absorber UV531, the light stabilizer is OK520, and the wax promoter is water-based OPV gloss oil wax preparation.
The preparation method of the water-based paint composition comprises the following steps:
step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 45 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;
step 2
Heating to 76 ℃ and reacting for 2 h;
and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;
and 4, step 4: cooling to 48 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;
and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;
step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.
Example 2: a water-based paint composition is prepared from the following raw materials in parts by weight:
18 parts of carboxyl-containing anionic waterborne polyurethane, 13 parts of waterborne polyether sulfone resin, 7 parts of polyurethane cross-linking agent (B), 6 parts of waterborne silicone resin, 3 parts of isodecyl methacrylate (IDMA), 7 parts of guar gum, 1.8 parts of thickening agent, 5 parts of vinyl neodecanoate (NEO10), 8 parts of surfactant, 28 parts of waterborne fluorocarbon resin, 7 parts of vanillin and 4 parts of light stabilizer,
the wax-free anti-aging coating comprises 15 parts of carboxyl, 6 parts of isopropanol, 2.5 parts of polyvinyl formal, 4 parts of dodecanol ester, 5 parts of isothiazolinone derivatives, 2.5 parts of silicone-acrylic emulsion, 4 parts of polytetrafluoroethylene and 6 parts of wax auxiliaries. The synthesis of anionic waterborne polyurethane is carried out by dispersing DMPA in PEG200 and butanone and then catalyzing with TDI.
The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.
The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.
The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m2More than g.
The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.
The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.
The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.
The preparation method of the water-based paint composition comprises the following steps:
step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 40 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;
step 2: heating to 80 ℃ and reacting for 2 h;
and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;
and 4, step 4: cooling to 40 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;
and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;
step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.
Example 3
A water-based paint composition is prepared from the following raw materials in parts by weight:
15 parts of carboxyl-containing anionic waterborne polyurethane, 11 parts of waterborne polyether sulfone resin, 2 parts of polyurethane cross-linking agent (B), 8 parts of waterborne silicone resin, 5 parts of isodecyl methacrylate (IDMA), 8 parts of guar gum, 2 parts of thickening agent, 7 parts of vinyl neodecanoate (NEO10), 9 parts of surfactant, 35 parts of waterborne fluorocarbon resin, 8 parts of vanillin, 5 parts of light stabilizer, 7 parts of isopropanol, 3.5 parts of polyvinyl formal, 6 parts of dodecanol ester, 6 parts of isothiazolinone derivative, 10 parts of silicone-acrylic emulsion, 8 parts of polytetrafluoroethylene and 7 parts of wax assistant.
The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.
The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.
The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.
The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m2More than g.
The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.
The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.
The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.
The preparation method of the water-based paint composition comprises the following steps:
step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 42 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;
step 2: heating to 75 ℃ and reacting for 2 h;
and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;
and 4, step 4: cooling to 40 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;
and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;
step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.
Example 4
A water-based paint composition is prepared from the following raw materials in parts by weight:
16 parts of carboxyl-containing anionic waterborne polyurethane, 16 parts of waterborne polyether sulfone resin, 4 parts of polyurethane cross-linking agent (B), 3 parts of waterborne silicone resin, 3 parts of isodecyl methacrylate (IDMA), 6 parts of guar gum, 2 parts of thickening agent, 2 parts of vinyl neodecanoate (NEO10), 8 parts of surfactant, 22 parts of waterborne fluorocarbon resin, 7 parts of vanillin, 4 parts of light stabilizer, 6 parts of isopropanol, 4 parts of polyvinyl formal, 4 parts of dodecyl ester, 4 parts of isothiazolinone derivative, 7 parts of silicone-acrylate emulsion, 7 parts of polytetrafluoroethylene and 7 parts of wax assistant.
The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.
The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.
The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.
The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m2More than g.
The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.
The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.
The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.
The preparation method of the water-based paint composition comprises the following steps:
step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 41 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;
step 2: heating to 79 ℃ to react for 2 h;
and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;
and 4, step 4: cooling to 43 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;
and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;
step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.
Example 5
A water-based paint composition is prepared from the following raw materials in parts by weight:
18 parts of carboxyl-containing anionic waterborne polyurethane, 13 parts of waterborne polyether sulfone resin, 2 parts of polyurethane cross-linking agent (B), 5 parts of waterborne silicone resin, 4 parts of isodecyl methacrylate (IDMA), 7 parts of guar gum, 2 parts of thickening agent, 2 parts of vinyl neodecanoate (NEO10), 8.5 parts of surfactant, 22 parts of waterborne fluorocarbon resin, 6 parts of vanillin, 4 parts of light stabilizer, 12 parts of isopropanol, 6 parts of 3 parts, 2 parts of polyvinyl formal, 3 parts of dodecanol ester, 4 parts of isothiazolinone derivative, 5 parts of silicone-acrylic emulsion, 6 parts of polytetrafluoroethylene and 3 parts of wax assistant.
The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.
The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.
The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.
The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m2More than g.
The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.
The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.
The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.
The preparation method of the water-based paint composition comprises the following steps:
step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 46 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;
step 2: heating to 76 ℃ and reacting for 2 h;
and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;
and 4, step 4: cooling to 44 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;
and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;
step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.
Example 6
A water-based paint composition is prepared from the following raw materials in parts by weight:
18 parts of carboxyl-containing anionic waterborne polyurethane, 13 parts of waterborne polyether sulfone resin, 8 parts of polyurethane cross-linking agent (B), 7 parts of waterborne silicone resin, 4 parts of isodecyl methacrylate (IDMA), 7 parts of guar gum, 2 parts of thickening agent, 4 parts of vinyl neodecanoate (NEO10), 8 parts of surfactant, 20 parts of waterborne fluorocarbon resin, 5 parts of vanillin, 3 parts of light stabilizer, 5 parts of isopropanol, 2 parts of polyvinyl formal, 2 parts of dodecanol ester, 4 parts of isothiazolinone derivative, 2 parts of silicone acrylic emulsion, 3.5 parts of polytetrafluoroethylene and 2 parts of wax assistant.
The carboxyl-containing anionic waterborne polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing the DMPA with TDI.
The surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.
The polyurethane cross-linking agent (B) is an aziridine group-terminated polyurethane cross-linking agent.
The polytetrafluoroethylene comprises tetrafluoroethylene units or units of tetrafluoroethylene and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and the specific surface area of the polytetrafluoroethylene powder is 40m2More than g.
The thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association.
The water-based silicone resin is an Orlixing FSP series water-soluble liquid resin, is an alkaline aqueous solution, has the model of 6808, has multiple performances of excellent film formation, corrosion resistance, water resistance, weather resistance, high temperature resistance and the like, and can be used for preparing inorganic anticorrosive coatings, inorganic waterproof coatings, inorganic fireproof coatings, inorganic heat insulation coatings and various high temperature resistant special coatings with high temperature resistance requirements.
The light stabilizer is an ultraviolet light absorber UV531, and the wax assistant agent is a water-based OPV gloss oil wax preparation agent.
The preparation method of the water-based paint composition comprises the following steps:
step 1: placing isodecyl methacrylate (IDMA), guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of a reaction system, and stirring at 50 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate (IDMA), the guar gum, the thickening agent and the vinyl neodecanoate;
step 2: heating to 80 ℃ and reacting for 2 h;
and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;
and 4, step 4: cooling to 50 ℃, adding polyvinyl formal, dodecyl glycol ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;
and 5: cooling to 20 ℃, adding the carboxyl-containing anionic waterborne polyurethane, the waterborne polyether sulfone resin and the polyurethane crosslinking agent (B), and uniformly stirring by using a stirrer to obtain a semi-solid body;
step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.
Comparative example 1
The procedure was essentially the same as in example 1 except that the raw materials for preparing the aqueous coating composition lacked the thickener, the aqueous silicone resin, and the silicone-acrylate emulsion.
Comparative example 2
Essentially the same procedure as in example 1 was followed except that the starting materials for the preparation of the aqueous coating composition were absent of the thickener.
Comparative example 3
The procedure was essentially the same as in example 1, except that the starting materials for the preparation of the aqueous coating composition lacked the aqueous silicone resin.
Comparative example 4
Essentially the same procedure as in example 1, except that the raw materials used to prepare the aqueous coating composition were absent of the silicone-acrylic emulsion.
The coating mixtures prepared in examples 1 to 6 were coated on the mixtures prepared in examples 1, 2, 3, 4, 5 and 6 using 6 different templates.
The coating mixtures prepared in comparative examples 1 to 3 were coated with the mixtures prepared in comparative example 1, comparative example 2 and comparative example 3, respectively, using 3 different templates.
Examples 1 to 6 and comparative examples 1 to 3 were subjected to the following tests:
item 1: the coated template is aired for 48 hours, and the template is solidified without cracking and crazing and is qualified;
item 2: dripping water on the painting template for 144 hours, and determining the painting template to be qualified without appearance change;
| experimental groups | Item 1 | Item 2 |
| Example 1 | Qualified | Qualified |
| Example 2 | Qualified | Qualified |
| Example 3 | Qualified | Qualified |
| Example 4 | Qualified | Qualified |
| Example 5 | Qualified | Qualified |
| Example 6 | Qualified | Qualified |
| Comparative example 1 | Crack(s) | Spots appeared |
| Comparative example 2 | Crack(s) | Spots appeared |
| Comparative example 3 | Crack(s) | Micro spots |
| Comparative example 4 | Crack(s) | Micro spots |
As can be seen from the above table, the data of examples 1-6 and comparative examples 1-3 show that the performance of the coating mixture of examples 1-6 is significantly improved, and the retention of the coating by adding the thickener, the water-based silicone resin and the silicone-acrylate emulsion to the raw materials is significantly improved. Meanwhile, the thickening agent, the water-based silicone resin and the silicone-acrylate emulsion are added into the raw materials to play a synergistic role, so that the retentivity of the coating is effectively improved, which may be:
the thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, the thickening effect is achieved through intermolecular association, the medium and high shear viscosity can be effectively improved, the thickening ratio is proper, the excellent flowing and leveling property and the gloss showing property are endowed to the inner and outer wall coatings, and the film forming property is improved. The thickening agent and the water-based silicone resin interact to improve the adhesive force of the coating mixture, the thickening agent has better thickening effect on 50nm fine-particle-size silicone-acrylate emulsion, and good leveling property and coating film fullness are provided. In addition, the aqueous silicone resin and the thickening agent have excellent formula compatibility, can effectively improve high-shear viscosity, and have excellent coating film fullness, splash resistance, water resistance and water diversion resistance. The silicone-acrylic emulsion has strong adsorption effect on the thickening agent, and can improve the stability of the high-coating mixture after solidification. The water-based emulsion formed by graft copolymerization of the acrylate component and the organic silicon monomer in the silicone-acrylate emulsion can promote the adhesive force of the coating.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An aqueous coating composition, characterized by comprising the following raw materials: anionic waterborne polyurethane containing carboxyl, waterborne polyether sulfone resin, polyurethane crosslinking agent, waterborne silicone resin, isodecyl methacrylate, guar gum, thickening agent, vinyl neodecanoate, surfactant, waterborne fluorocarbon resin, vanillin, light stabilizer, isopropanol, polyvinyl formal, lauryl alcohol ester, isothiazolinone derivative, silicone-acrylic emulsion, polytetrafluoroethylene and wax assistant;
the weight ratio of the thickening agent to the water-based silicone resin to the silicone-acrylate emulsion is (1.2-2) to (2-8) to (2-10);
the thickening agent is a polyurethane thickening agent and is an acrylic polymer with a branched chain, and the thickening effect is achieved through intermolecular association;
the water-based silicone resin is Orlixing FSP series water-soluble liquid resin and is an alkaline aqueous solution.
2. The aqueous coating composition of claim 1, wherein the weight ratio of the thickener, the aqueous silicone resin, and the silicone acrylic emulsion is 1.5:6: 8.
3. The aqueous coating composition of claim 1, comprising the following raw materials in parts by weight: 14-20 parts of carboxyl-containing anionic waterborne polyurethane, 11-17 parts of waterborne polyether sulfone resin, 2-10 parts of polyurethane cross-linking agent, 2-8 parts of waterborne silicone resin, 3-5 parts of isodecyl methacrylate, 6-8 parts of guar gum, 1.2-2 parts of thickening agent, 1-7 parts of vinyl neodecanoate, 8-9 parts of surfactant, 20-35 parts of waterborne fluorocarbon resin, 5-8 parts of vanillin, 3-5 parts of light stabilizer, 5-7 parts of isopropanol, 2-3.5 parts of polyvinyl formal, 2-6 parts of decaglycol ester, 4-6 parts of isothiazolinone derivative, 2-10 parts of silicone-acrylate emulsion, 3.5-8 parts of polytetrafluoroethylene and 2-7 parts of wax assistant.
4. The aqueous coating composition of claim 1 or 3, wherein the carboxyl-containing anionic aqueous polyurethane is synthesized by dispersing DMPA in PEG200 and butanone and then catalyzing with TDI.
5. An aqueous coating composition according to claim 1 or 3, characterized in that the surfactant is a cationic surfactant 1631 having a critical micelle concentration in 0.1M NaCl at 25 ℃ of less than 0.02g/100 g.
6. An aqueous coating composition according to claim 1 or 3, characterized in that the polyurethane crosslinker is an aziridinyl terminated polyurethane crosslinker.
7. The aqueous coating composition according to claim 1 or 3, wherein the polytetrafluoroethylene comprises tetrafluoroethylene units or tetrafluoroethylene units and modifying monomer units based on a modifying monomer copolymerizable with tetrafluoroethylene, and the polytetrafluoroethylene powder has a specific surface area of 40m2More than g.
8. An aqueous coating composition according to claim 1 or 3, wherein the light stabilizer is the ultraviolet absorber UV531 and the wax promoter is an aqueous OPV gloss oil wax promoter.
9. A method for preparing an aqueous coating composition according to any one of claims 1 to 8, comprising the steps of:
step 1: placing isodecyl methacrylate, guar gum, a thickening agent, vinyl neodecanoate and fatty alcohol-polyoxyethylene ether ammonium sulfate in a spherical condenser tube and a mechanical stirring three-neck flask, controlling the mass of the fatty alcohol-polyoxyethylene ether ammonium sulfate to be less than 15% of that of a reaction system, and stirring at 30-40 ℃ until the fatty alcohol-polyoxyethylene ether ammonium sulfate is completely dispersed in the isodecyl methacrylate, the guar gum, the thickening agent and the vinyl neodecanoate;
step 2: heating to 75-80 ℃ and reacting for 2 h;
and step 3: adding aqueous fluorocarbon resin, vanillin, light stabilizer and isopropanol, and continuing to react for 0.5 h;
and 4, step 4: cooling to 30-40 ℃, adding polyvinyl formal, dodecyl ester, isothiazolinone derivatives, water-based silicone resin, silicone-acrylate emulsion, polytetrafluoroethylene and wax additive, and uniformly stirring by using a stirrer;
and 5: cooling to 20 ℃, adding carboxyl-containing anionic waterborne polyurethane, waterborne polyether sulfone resin and polyurethane cross-linking agent, and uniformly stirring by using a stirrer to obtain a semi-solid body;
step 6: and packaging the mixed semi-solid body with a small bucket, and storing in a sealing way to obtain the water-based coating composition.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114805811A (en) * | 2022-05-31 | 2022-07-29 | 浙江鹏孚隆新材料有限公司 | Polyarylether resin containing carboxyl side group, synthesis method and application of polyarylether resin in coating |
| EP4249247A1 (en) * | 2022-03-23 | 2023-09-27 | Benecke-Kaliko AG | Aqueous paint for leather coating and corresponding leather material |
-
2020
- 2020-06-08 CN CN202010514217.XA patent/CN113831792A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4249247A1 (en) * | 2022-03-23 | 2023-09-27 | Benecke-Kaliko AG | Aqueous paint for leather coating and corresponding leather material |
| CN116836616A (en) * | 2022-03-23 | 2023-10-03 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Water paint for leather coating and corresponding leather material |
| CN114805811A (en) * | 2022-05-31 | 2022-07-29 | 浙江鹏孚隆新材料有限公司 | Polyarylether resin containing carboxyl side group, synthesis method and application of polyarylether resin in coating |
| CN114805811B (en) * | 2022-05-31 | 2023-08-25 | 浙江鹏孚隆新材料有限公司 | Polyarylether resin containing carboxyl side group, synthesis method and application thereof in coating aspect |
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