CN112694817B - Quick-drying steel structure finish paint and preparation process thereof - Google Patents
Quick-drying steel structure finish paint and preparation process thereof Download PDFInfo
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- CN112694817B CN112694817B CN202011571446.1A CN202011571446A CN112694817B CN 112694817 B CN112694817 B CN 112694817B CN 202011571446 A CN202011571446 A CN 202011571446A CN 112694817 B CN112694817 B CN 112694817B
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- 239000003973 paint Substances 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 238000001035 drying Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920000180 alkyd Polymers 0.000 claims abstract description 21
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 7
- 239000000049 pigment Substances 0.000 claims abstract description 7
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical group C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 claims abstract description 3
- GVHGPHCIZFCUBT-VFQQELCFSA-N OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO.C(C=C)(=O)O Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO.C(C=C)(=O)O GVHGPHCIZFCUBT-VFQQELCFSA-N 0.000 claims abstract description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 28
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 20
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 19
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 14
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 13
- LASVAZQZFYZNPK-UHFFFAOYSA-N 2,4,6-trimethyl-1,3,5-triazine Chemical compound CC1=NC(C)=NC(C)=N1 LASVAZQZFYZNPK-UHFFFAOYSA-N 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- -1 aldehyde compound Chemical class 0.000 claims description 10
- 150000001868 cobalt Chemical class 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 239000003208 petroleum Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 239000003480 eluent Substances 0.000 claims description 5
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000012046 mixed solvent Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000012266 salt solution Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 239000003446 ligand Substances 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 2
- 229940011182 cobalt acetate Drugs 0.000 claims description 2
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical group [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000004440 column chromatography Methods 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 4
- 230000002779 inactivation Effects 0.000 abstract description 2
- ZBYYWKJVSFHYJL-UHFFFAOYSA-L cobalt(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Co+2].CC([O-])=O.CC([O-])=O ZBYYWKJVSFHYJL-UHFFFAOYSA-L 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 229910001429 cobalt ion Inorganic materials 0.000 description 4
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 4
- 229940125904 compound 1 Drugs 0.000 description 4
- CASUWPDYGGAUQV-UHFFFAOYSA-M potassium;methanol;hydroxide Chemical compound [OH-].[K+].OC CASUWPDYGGAUQV-UHFFFAOYSA-M 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 3
- 238000009924 canning Methods 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229940126214 compound 3 Drugs 0.000 description 3
- 239000012043 crude product Substances 0.000 description 3
- 238000010526 radical polymerization reaction Methods 0.000 description 3
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- AICOOMRHRUFYCM-ZRRPKQBOSA-N oxazine, 1 Chemical compound C([C@@H]1[C@H](C(C[C@]2(C)[C@@H]([C@H](C)N(C)C)[C@H](O)C[C@]21C)=O)CC1=CC2)C[C@H]1[C@@]1(C)[C@H]2N=C(C(C)C)OC1 AICOOMRHRUFYCM-ZRRPKQBOSA-N 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09F—NATURAL RESINS; FRENCH POLISH; DRYING-OILS; OIL DRYING AGENTS, i.e. SICCATIVES; TURPENTINE
- C09F9/00—Compounds to be used as driers, i.e. siccatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of water-based coatings, in particular to a quick-drying steel structure finish paint and a preparation process thereof. The finish paint comprises, by weight, 20-100 parts of waterborne alkyd resin, 30-70 parts of pigment and filler, 1-2.5 parts of N, N-dimethylethanolamine, 1-9 parts of an auxiliary agent and 2-25 parts of deionized water; 0.01-1 part of drier. The waterborne alkyd resin is acrylic acid-sorbitol alkyd resin; the auxiliary agent contains a drier which is a complex compound coordinated by N and Co on an s-triazine ring. The complex drier is added into the finish paint, so that the inactivation of the drier is avoided, and the drying efficiency is improved. In addition, the selected coordination compound has a dispersive structure, so that the dispersibility of the alkyd resin can be improved.
Description
Technical Field
The invention relates to the technical field of water-based coatings, in particular to a quick-drying steel structure finish paint and a preparation process thereof.
Background
Steel structures are currently used in various fields such as buildings and municipal works, and because of their ability to shorten construction periods, they have recently been subjected to hot-bar in the construction industry. However, the steel structure is easily corroded due to the special properties of the steel, which also brings many limitations to the use of the steel structure.
In order to solve the problem that the steel structure is corroded, paint needs to be sprayed on the surface of the steel structure. The steel structure used in the building is mostly cylindrical, in the spraying process, one-time spraying is needed, the drying speed of paint is required to be fast, otherwise, the phenomenon of non-uniformity is caused due to the fact that the hanging flow is easily formed on the cylindrical steel rod body.
In consideration of environmental protection, the trend is to replace oil-based paints with water-based paints, and water-based alkyd resins in water-based paints are widely used due to their advantages of excellent gloss, hardness, excellent workability, and low price. Spraying water paint on the surface of the steel structure is the most common option.
However, the biggest limitation of the application of the water paint to the surface spraying of the steel structure is that the water paint has a slow drying speed and is easy to form a hanging flow on a curved surface. In addition, the curved surface structure of the steel structure needs to be sprayed once, so that the paint layer needs to reach a certain thickness, and the solid content of the paint needs to be improved.
Based on the above situation, it is important to design and develop a steel structure finish paint with high solid content and high drying speed.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides the water-based alkyd resin paint suitable for the surface of the steel structure. The complex drier is added into the finish paint, so that the inactivation of the drier is avoided, and the drying efficiency is improved. In addition, the selected coordination compound has a dispersive structure, so that the dispersibility of the alkyd resin can be improved.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
a quick-drying steel structure finish paint is composed of the following components in parts by weight:
20-100 parts of water-based alkyd resin, 30-70 parts of pigment and filler, 1-2.5 parts of N, N-dimethylethanolamine, 1-9 parts of assistant and 2-25 parts of deionized water; drier 0.01-1
The waterborne alkyd resin is acrylic acid-sorbitol alkyd resin;
the auxiliary agent contains a drier which is a complex compound coordinated by N and Co on an s-triazine ring.
The waterborne alkyd resin is prepared according to the method of patent CN 103951820;
the structural formula of the ligand in the drier is as follows:
wherein R is H or a linear alkyl group of C1-C6, or a benzene ring or a pyridine ring;
the preparation method of the ligand comprises the following steps:
a, uniformly mixing methanol solutions of trimethyl s-triazine, THF and KOH;
b, dissolving an aldehyde compound in THF (tetrahydrofuran) and slowly dripping the aldehyde compound into the system obtained in the step a, and controlling the temperature to be 25-65 ℃ to react for 24-48h with stirring;
and c, concentrating the filtrate obtained in the step b, mixing with silica gel powder, and performing column color separation by using a mixed solvent of ethyl acetate and petroleum ether as eluent to obtain a yellow solid, namely the coordination compound.
The molar ratio of trimethyl s-triazine to aldehyde compound is 1: 3-5;
the mass fraction of KOH in the KOH methanol solution is 10-12%;
the volume ratio of the ethyl acetate and the petroleum ether in the mixed solution of the leacheate is 1: 2;
the preparation method of the drier comprises the following steps:
1) dissolving cobalt salt into a transparent solution by using ethanol and water;
2) dropwise adding the cobalt salt solution prepared in the step 1) into a THF solution of a coordination compound, stirring at 50-60 ℃ for 8-12h to stop reaction, spin-drying the solvent, washing with an ethanol water solution, vacuum-drying to obtain a drier, and grinding until the fineness is less than 50um to obtain the drier.
The molar ratio of the cobalt salt to the coordination compound is 1: 4-6;
the cobalt salt is selected from cobalt acetate;
the preparation process of the quick-drying steel structure finish paint comprises the following steps:
introducing nitrogen into the mixing kettle for 20-30min, taking the raw materials according to the measured parts, mixing the components, finally adding water to adjust the solid content to 70-88%, and discharging.
According to the application, trimethyl s-triazine and an aldehyde compound are utilized to form a coordination compound, lone-pair electrons carried by nitrogen atoms on triazine rings form coordination bonds with cobalt ions, and then a complex is formed. After the paint is sprayed, a paint film is formed on the surface of a steel structure, wherein divalent cobalt is oxidized into trivalent cobalt by air, so that double bonds in the alkyd resin are activated, free radical polymerization is initiated, and drying of the paint is realized.
The existence of nitrogen atoms in the triazine ring can increase the corrosion resistance of the coating to a certain extent.
During trivalent cobalt-initiated free radical polymerization, double bonds on the coordination compound can also participate in free radical polymerization, so that the coordination compound can participate in film forming reaction, and the coordination compound takes triazine ring as the center, and the dispersibility of the coating can be improved due to the design of a dispersed alkyl chain, so that the resin is uniform in three thirds.
In conclusion, the quick-forming steel structure finish paint provided by the application is used for sorbitol alkyd resin which is difficult to dry by designing a novel drier.
Detailed Description
Except the drier, the auxiliary agents used in the method are all the existing commercial auxiliary agents, and the types and the mass percentages of the auxiliary agents in the alkyd resin are as follows:
the auxiliary agent comprises a drier (0.01-0.1), an anti-flash rust agent CK36(1), a defoaming agent TEGO Foamex 810(0.5), a flatting agent GS-1041(0.6), a dispersant TEGO Dispers 740W (0.7) and a thickener TEGO ViscoPlus 3030 (0.4);
the pigment and filler comprises titanium dioxide, barium sulfate, calcium carbonate and talcum powder in parts by weight, and the mass ratio of the titanium dioxide to the barium sulfate to the calcium carbonate is 2: 3: 1: 2.
example 1
Preparation of Complex Compounds
a, uniformly mixing methanol solutions of trimethyl s-triazine, THF and KOH;
b, dissolving paraformaldehyde in THF, slowly dripping into the system in the step a, and stirring at room temperature for reaction for 48 hours;
and c, concentrating the filtrate obtained in the step b, mixing with silica gel powder, and performing column color separation by using a mixed solvent (volume ratio is 1: 2) of ethyl acetate and petroleum ether as eluent to obtain a yellow solid, namely the coordination compound 1.
The molar ratio of trimethyl s-triazine to aldehyde compound is 1: 3;
the mass fraction of KOH in the KOH methanol solution is 10 percent;
H-NMR:(CDCl3,400MHz),δ(ppm):6.63(t,3H),5.18(d,3H),6.63(d,3H)。
preparation of the Complex
1) Dissolving cobalt acetate tetrahydrate (1mol) by using ethanol and water to obtain a transparent solution;
2) dropwise adding the cobalt salt solution prepared in the step 1) into a THF solution of a coordination compound 1(4mol), stirring at 50-60 ℃ for 8-12h to stop the reaction, spin-drying the solvent, washing with an ethanol water solution, vacuum-drying to obtain a drier crude product, and grinding to a fineness of less than 50um to obtain the drier.
The molar ratio of the cobalt acetate tetrahydrate to the compound 1 is 1: 4. and detecting the content of cobalt ions in the ethanol washing solution by using an atomic absorption spectrometry to be 0.0001mol.
Introducing nitrogen into a mixing kettle for 20min, uniformly mixing 90 parts of waterborne alkyd resin, 60 parts of pigment and filler, 2.5 parts of N, N-dimethylethanolamine, 0.9 part of drier and 25 parts of deionized water, discharging and canning.
Example 2
Preparation of Complex Compounds
a, uniformly mixing methanol solutions of trimethyl s-triazine, THF and KOH, and heating to reflux;
b, dissolving butyraldehyde in THF at the reflux temperature, slowly dripping into the system in the step a, and stirring and refluxing for reaction for 24 hours;
and c, concentrating the filtrate obtained in the step b, mixing with silica gel powder, and performing column color separation by using a mixed solvent (volume ratio is 1: 2) of ethyl acetate and petroleum ether as eluent to obtain a yellow solid, namely the coordination compound 3.
The molar ratio of trimethyl s-triazine to aldehyde compound is 1: 5;
the mass fraction of KOH in the KOH methanol solution is 10 percent;
H-NMR (CDCl3,400MHz), delta (ppm):6.41(d,3H),6.06(t,6H),1.96(m,6H), 1.37(m, 6H), 0.96(m,9H) complexes were prepared
1) Dissolving cobalt acetate tetrahydrate (1mol) by using ethanol and water to obtain a transparent solution;
2) dropwise adding the cobalt salt solution prepared in the step 1) into a THF solution of a coordination compound 3(6mol), stirring at 50-60 ℃ for 8-12h to stop the reaction, spin-drying the solvent, washing with an ethanol water solution, vacuum-drying to obtain a drier crude product, and grinding to a fineness of less than 50um to obtain the drier.
The molar ratio of the cobalt acetate tetrahydrate to the compound 3 is 1: 6. and detecting the content of cobalt ions in the ethanol washing solution by using an atomic absorption spectrometry to be 0.0002 mol.
Introducing nitrogen into a mixing kettle for 20min, uniformly mixing 90 parts of waterborne alkyd resin, 60 parts of pigment and filler, 2.5 parts of N, N-dimethylethanolamine, 0.9 part of drier and 25 parts of deionized water, discharging and canning.
Example 3
Preparation of Complex Compounds
a, uniformly mixing methanol solutions of trimethyl s-triazine, THF and KOH;
b, slowly dripping benzaldehyde into the system obtained in the step a in THF at the reflux temperature, and stirring for reacting for 24 hours;
and c, concentrating the filtrate obtained in the step b, mixing with silica gel powder, and performing column color separation by using a mixed solvent (volume ratio is 1: 2) of ethyl acetate and petroleum ether as eluent to obtain a solid, namely the coordination compound 4.
The molar ratio of trimethyl s-triazine to aldehyde compound is 1: 3;
the mass fraction of KOH in the KOH methanol solution is 10 percent;
H-NMR:(CDCl3,400MHz),δ(ppm):6.99(d,3H),7.01(d,3H),7.30(d,6H),7.21(d,6H)，7.14(d,3H)。
preparation of the Complex
1) Dissolving cobalt acetate tetrahydrate (1mol) by using ethanol and water to obtain a transparent solution;
2) dropwise adding the cobalt salt solution prepared in the step 1) into a THF solution of a coordination compound 1(4mol), stirring at 50-60 ℃ for 8-12h to stop the reaction, spin-drying the solvent, washing with an ethanol water solution, vacuum-drying to obtain a drier crude product, and grinding to a fineness of less than 50um to obtain the drier.
The molar ratio of the cobalt acetate tetrahydrate to the compound 1 is 1: 4. and detecting the content of cobalt ions in the ethanol washing solution by using an atomic absorption spectrometry to be 0.0001mol.
Introducing nitrogen into a mixing kettle for 20min, uniformly mixing 90 parts of waterborne alkyd resin, 60 parts of pigment and filler, 2.5 parts of N, N-dimethylethanolamine, 0.6 part of drier and 20 parts of deionized water, discharging and canning.
Examples of the experiments
The quick-drying steel structure finish paint prepared by the method is high in drying speed. After the topcoat has been coated (according to GB1727), it is tested for open and tack dry times (paint film dry test method according to ASTM D5895). And the hardness of the paint film is tested according to GB/T1730-93A.
The blank control was selected from commercially available steel structure alkyd paints.
Specific test results are shown in table 1:
TABLE 1 Performance test results for quick drying steel structure topcoat
Claims (4)
1. The quick-drying steel structure finish paint is characterized by comprising the following components in parts by weight: 20-100 parts of water-based alkyd resin, 30-70 parts of pigment and filler, 1-2.5 parts of N, N-dimethylethanolamine, 1-9 parts of assistant and 2-25 parts of deionized water; 0.01-1 part of drier; the waterborne alkyd resin is acrylic acid-sorbitol alkyd resin; the auxiliary agent comprises a drier which is a complex compound coordinated by N and Co on an s-triazine ring;
the structural formula of the ligand in the drier is as follows:
wherein R is H or a linear alkyl group of C1-C6, or a benzene ring or a pyridine ring;
the method for preparing the ligand comprises the following specific steps:
a, uniformly mixing methanol solutions of trimethyl s-triazine, THF and KOH;
b, dissolving an aldehyde compound in THF (tetrahydrofuran) and slowly dripping the aldehyde compound into the system obtained in the step a, and controlling the temperature to be 20-65 ℃ to react for 24-48h with stirring;
c, concentrating the filtrate obtained in the step b, mixing with silica gel powder, and performing column chromatography separation by using a mixed solvent of ethyl acetate and petroleum ether as eluent to obtain a yellow solid, namely the coordination compound;
the molar ratio of trimethyl s-triazine to aldehyde compound is 1: 3-5;
the preparation method of the drier comprises the following steps: 1) dissolving cobalt salt into a transparent solution by using ethanol and water; 2) dropwise adding the cobalt salt solution prepared in the step 1) into a THF solution of a coordination compound, stirring at 50-60 ℃ for 8-12h to stop reaction, spin-drying the solvent, washing with an ethanol water solution, vacuum-drying to obtain a crude drier product, and grinding until the fineness is less than 50um to obtain the drier.
2. The preparation method of the quick-drying steel structure finish paint of claim 1, wherein the mass fraction of KOH in the methanol solution of KOH is 10-12%; the volume ratio of the ethyl acetate and the petroleum ether in the mixed solution of the leacheate is 1: 2.
3. the finish paint for quick-drying steel structures according to claim 1, wherein the cobalt salt is selected from cobalt acetate.
4. The method for preparing the quick-drying steel structure finish paint as claimed in claim 1, which is characterized by comprising the following preparation processes: introducing nitrogen into the mixing kettle for 20-30min, taking the raw materials according to the measured parts, mixing the components, finally adding water to adjust the solid content to 70-88%, and discharging.
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| CN110183350A (en) * | 2019-06-10 | 2019-08-30 | 上海应用技术大学 | A kind of water paint drier and preparation method thereof |
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| GB888473A (en) * | 1957-05-03 | 1962-01-31 | Rheinpreussen Ag | Air-drying aminoplast-alkyd coating composition |
| CN101274290A (en) * | 2007-03-30 | 2008-10-01 | 中国石油天然气股份有限公司 | Late transition metal catalyst and preparation method and application thereof |
| CN104845510A (en) * | 2014-12-04 | 2015-08-19 | 北京金汇利应用化工制品有限公司 | Paint containing waterborne alkyd resin and preparation method of paint |
| CN105754460A (en) * | 2016-02-29 | 2016-07-13 | 广东工业大学 | Alkyd resin finishing coat capable of being subjected to UV curing |
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