CN114644877A - Self-cleaning type corrosion-resistant weather-resistant polyurea coating - Google Patents
Self-cleaning type corrosion-resistant weather-resistant polyurea coating Download PDFInfo
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- CN114644877A CN114644877A CN202110669458.6A CN202110669458A CN114644877A CN 114644877 A CN114644877 A CN 114644877A CN 202110669458 A CN202110669458 A CN 202110669458A CN 114644877 A CN114644877 A CN 114644877A
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- resistant
- self
- fluorine
- cleaning type
- polyurea coating
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- 238000000576 coating method Methods 0.000 title claims abstract description 26
- 239000011248 coating agent Substances 0.000 title claims abstract description 25
- 238000005260 corrosion Methods 0.000 title claims abstract description 25
- 238000004140 cleaning Methods 0.000 title claims abstract description 20
- 230000007797 corrosion Effects 0.000 title claims abstract description 20
- 229920002396 Polyurea Polymers 0.000 title claims abstract description 17
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000049 pigment Substances 0.000 claims abstract description 12
- -1 aliphatic isocyanate Chemical class 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 9
- 239000012948 isocyanate Substances 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 6
- 125000000467 secondary amino group Chemical class [H]N([*:1])[*:2] 0.000 claims abstract description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 5
- 239000013638 trimer Substances 0.000 claims description 5
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000005055 methyl trichlorosilane Substances 0.000 claims description 4
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 claims description 4
- 229910000077 silane Inorganic materials 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- DAVCAHWKKDIRLY-UHFFFAOYSA-N 1-ethenoxy-1,1,2,2,3,3,3-heptafluoropropane Chemical compound FC(F)(F)C(F)(F)C(F)(F)OC=C DAVCAHWKKDIRLY-UHFFFAOYSA-N 0.000 claims description 3
- GXDHCNNESPLIKD-UHFFFAOYSA-N 2-methylhexane Chemical compound CCCCC(C)C GXDHCNNESPLIKD-UHFFFAOYSA-N 0.000 claims description 3
- GVEUEBXMTMZVSD-UHFFFAOYSA-N 3,3,4,4,5,5,6,6,6-nonafluorohex-1-ene Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C=C GVEUEBXMTMZVSD-UHFFFAOYSA-N 0.000 claims description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 3
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical group O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 claims description 3
- WLJOUONLYGDBLF-UHFFFAOYSA-N 2,4,4-triethylhexane-1,6-diamine Chemical compound CCC(CN)CC(CC)(CC)CCN WLJOUONLYGDBLF-UHFFFAOYSA-N 0.000 claims description 2
- NPRGRDDHVZHMPQ-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-triethylcyclohexan-1-amine Chemical compound CCC1(CC)CC(N)CC(CC)(CN)C1 NPRGRDDHVZHMPQ-UHFFFAOYSA-N 0.000 claims description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 229920000388 Polyphosphate Polymers 0.000 claims description 2
- 229960001701 chloroform Drugs 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 2
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920005646 polycarboxylate Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 239000001205 polyphosphate Substances 0.000 claims description 2
- 235000011176 polyphosphates Nutrition 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- KIDHWZJUCRJVML-UHFFFAOYSA-N putrescine Chemical compound NCCCCN KIDHWZJUCRJVML-UHFFFAOYSA-N 0.000 claims description 2
- KLNPWTHGTVSSEU-UHFFFAOYSA-N undecane-1,11-diamine Chemical compound NCCCCCCCCCCCN KLNPWTHGTVSSEU-UHFFFAOYSA-N 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 18
- 229910052710 silicon Inorganic materials 0.000 abstract description 7
- 239000010703 silicon Substances 0.000 abstract description 7
- 150000003839 salts Chemical class 0.000 abstract description 6
- 239000007921 spray Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 239000013530 defoamer Substances 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 125000001153 fluoro group Chemical group F* 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 abstract description 2
- 230000002209 hydrophobic effect Effects 0.000 abstract 1
- 239000002904 solvent Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 239000007787 solid Substances 0.000 description 6
- 230000004224 protection Effects 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 150000002513 isocyanates Chemical class 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000005028 tinplate Substances 0.000 description 4
- 238000011179 visual inspection Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003075 superhydrophobic effect Effects 0.000 description 2
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 description 1
- 229920000608 Polyaspartic Polymers 0.000 description 1
- 229920000805 Polyaspartic acid Polymers 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 108010064470 polyaspartate Proteins 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a self-cleaning type anticorrosive weather-resistant polyurea coating which comprises A, B components, wherein the component A is aliphatic isocyanate tripolymer with the weight part of 100, and the component B comprises the following components in parts by weight: 40-60 parts of fluorine-silicon modified secondary amine polymer, 5-10 parts of antirust pigment, 30-45 parts of anti-corrosion pigment filler, 0.1-1 part of dispersant and 0.1-1 part of defoamer, and the fluorine-silicon modified secondary amine polymer is obtained by dispersing and grinding the components to detect the fineness of less than or equal to 60 mu m. The component A and the component B are proportioned according to the metering proportion, fully mixed and sprayed by an airless sprayer. Thereby obtaining an excellent anticorrosive coating which can resist neutral salt spray for more than 4000 hours and does not change color or pulverize after ultraviolet 2000 hours. The silicon and fluorine groups are added to improve the hydrophobic and oleophobic performances of a paint film, so that the self-cleaning effect is achieved, and the salt spray resistance and the corrosion resistance are more excellent. And the coating and the steel structure base material have good adhesive force.
Description
Technical Field
The invention relates to the technical field of anticorrosive weather-resistant coatings, in particular to a self-cleaning or easy-cleaning anticorrosive ultraviolet-resistant polyurea coating and a production and preparation method thereof.
Background
The storage tank is indispensable, important basic equipment in trades such as oil, chemical industry, grain and oil, food, fire control, traffic, metallurgy, national defence, and always can't leave big little storage tank in our economic life, and the important effect that the storage tank played in national economy development is that there is not the fungible. For many enterprises, normal production cannot be achieved without storage tanks, and particularly, national strategic material reserves cannot be separated from storage tanks of various capacities and types.
In order to slow down the increasingly serious corrosion of the atmospheric environment to the metal matrixes of the overground steel storage tanks and the non-heat-insulation steel overhead pipelines and prevent leakage accidents caused by the corrosion, the anticorrosive paint with excellent anticorrosive performance and good construction performance becomes the most main protection means. The anticorrosive paint and the coating are very important for ensuring the long-term safe and stable operation of the oil storage tank, and the proper anticorrosive paint is selected according to the specific use condition of equipment, is reasonably matched, is elaborately constructed, and can obtain a satisfactory protection effect.
The anticorrosive paint for domestic and foreign storage tanks and metal substrates can be roughly divided into three types of water-based, solvent-based and high-solid. The water-based anticorrosive paint is the main propulsion direction at present, but the water-based anticorrosive paint generally has low solid content which is generally below 60 percent and low solid content. Resulting in a thin actual effective coating and poor corrosion resistance. The paint has the general anticorrosion performance of more than 1000h and is a zinc-rich fluorocarbon aqueous anticorrosion paint. However, the development of the method is restricted due to low solid content, more construction layers, large influence of temperature and humidity in the air, and the like. The solvent type anticorrosive paint has long developed and excellent anticorrosive performance. However, the solvent content of the common solvent-based anticorrosive paint is large, so that a large amount of solvent is volatilized in the production and construction processes. The volatile solvent is absorbed by the nose of people and harms the health of people. In the related regulations of environmental protection continuously released in China, the discharge amount of the solvent is continuously limited. Therefore, the solvent-based anticorrosive paint is continuously extruded and eliminated. The high-solid anticorrosive paint does not contain toxic and harmful solvents, and the solid content can reach more than 99 percent. The construction is simple and convenient, and the anticorrosion effect of the water-based anticorrosive paint can be achieved for several times after one or two construction. Is the most practical and economic means at present.
Disclosure of Invention
In view of the above, the invention aims to provide a self-cleaning type corrosion-resistant weather-resistant polyurea coating which does not contain any solvent and is environment-friendly. The paint film has good low-temperature flexibility, super-strong adhesive force with the surface of a coated object, sufficient abrasion-resistant hardness, super-strong ultraviolet light aging resistance, super-hydrophobic and oleophobic properties, and greatly improves the salt spray resistance while endowing the paint film with self-cleaning.
The technical scheme of the invention is as follows:
a self-cleaning type corrosion-resistant weather-resistant polyurea coating consists of a component A and a component B.
The component A consists of 100 parts by weight of aliphatic isocyanate trimer.
The component B comprises the following components in parts by weight: : 40-60 parts of fluorine-silicon modified secondary amine polymer, 5-10 parts of antirust pigment, 30-45 parts of anti-corrosion pigment filler, 0.1-1 part of dispersant and 0.1-1 part of defoaming agent.
Preferably, the aliphatic isocyanate trimer is hexamethylene diisocyanate trimer.
Preferably, the following components: the fluorine-silicon modified secondary amino polymer is prepared by the following method:
the metered fluoromonomer was placed in a reactor and Pt catalyst was added. Adding silane at normal temperature, and stirring for reaction for 4 hours. Filtering to obtain the intermediate of fluorine and silicon.
Firstly, putting the measured fluorine-silicon intermediate into a reactor, and heating to 70 ℃ while stirring. And (3) dripping aliphatic primary amine into the fluorine-silicon intermediate, and controlling the temperature to be 70-80 ℃. After the completion of the dropwise addition, the temperature was maintained and the reaction was carried out for 8 hours. And after the reaction is finished, cooling to normal temperature to obtain the fluorine-silicon modified polymer.
Preferably, the aliphatic primary amine is one or more of ethylenediamine, 1, 2-propylenediamine, 1, 4-butylenediamine, 1, 6-diaminohexane, 2, 5-diamino-2, 5-methylhexane, 2, 4-triethyl-1, 6-diaminohexane, 2,4, 4-triethyl-1, 6-diaminohexane, 1, 11-diaminoundecane, 1, 12-diaminoundecane, and 1-amino-3, 3, 5-triethyl-5-aminomethylcyclohexane.
Preferably, the fluorine-containing monomer is one or two of perfluoro-n-propyl vinyl ether, fluorine-containing alkyl allyl ether and perfluorobutyl ethylene.
Preferably, the silane is one or two of trichloromethane, methyltrichlorosilane and vinyl trimethoxy silane.
Preferably, the antirust pigment is one or more of orthophosphate, polyphosphate, phosphite, molybdate, borate and aluminum tripolyphosphate.
Preferably, the anti-corrosion pigment and filler is one or more of rutile type titanium dioxide, 800-1200 mesh sericite powder, 800-1200 mesh talcum powder and 800-1200 mesh barium sulfate.
Preferably, the dispersant is one or two of polycarboxylate and polyacrylate.
Preferably, the defoaming agent is at least one of a silicone defoaming agent and a polyether defoaming agent.
The invention has the beneficial effects that:
1. the invention acts on a steel structure, has excellent ultraviolet resistance and weather resistance, and has a urea bond structure with low-temperature flexibility and wear resistance.
2. Silicon and fluorine groups are added, so that the paint film has self-cleaning performance.
3. Has extremely good salt spray resistance, and the neutral salt spray is more than 4000 hours.
4. The construction is simple, and the wall thickness is 100 mu m without sagging after 1 time of vertical construction.
5. No solvent and environment protection.
Detailed Description
Example 1
Component A is prepared from scientific prescription N3600. The detection items comprise: viscosity, isocyanate content, clean by visual inspection and no foreign matter. And sealing for later use after the detection is qualified.
Preparation of component B, 1) preparation of fluorine-silicon modified secondary amino polymer: the metered perfluoro-n-propyl vinyl ether was placed in a reactor and Pt catalyst was added. Adding methyl trichlorosilane at normal temperature, and stirring for reaction for 4 hours. Filtering to obtain the fluorosilicone intermediate.
And then putting the metered fluorosilicone intermediate into a reactor, and heating to 70 ℃ while stirring. Dripping 1, 2-propane diamine into the fluorine-silicon intermediate, and controlling the temperature at 70-80 ℃. After the completion of the dropwise addition, the temperature was maintained and the reaction was carried out for 8 hours. And after the reaction is finished, cooling to normal temperature to obtain the fluorine-silicon modified polymer.
2) 55 parts of the prepared fluorine-silicon modified polymer is added with 0.3 part of BYK-P104S dispersant, 0.8 part of BYK-057 defoamer and dispersed for 10 minutes at 1200r/min of 800-. Then, 6 parts of aluminum tripolyphosphate and 37.9 parts of 800-mesh sericite powder are added at the current dispersing speed. The dispersion was continued for 20 minutes and then ground to a fineness of 60 μm. And obtaining the component B.
A. And uniformly coating the component B on one surface of the clean tinplate according to the weight ratio of 50:100, and maintaining for 7 d. And (5) detecting.
Example 2
Component A is prepared and converted into TPA-100 by Asahi. The detection items comprise: viscosity, isocyanate content, clean by visual inspection and no foreign matter. And sealing for later use after the detection is qualified.
Preparation of component B, 1) preparation of fluorine-silicon modified secondary amino polymer: the metered fluorocarbon alkyl allyl ether was placed in the reactor and the Pt catalyst was added. Adding methyl trichlorosilane at normal temperature, and stirring for reaction for 4 hours. Filtering to obtain the intermediate of fluorine and silicon.
And then putting the metered fluorosilicone intermediate into a reactor, and heating to 70 ℃ while stirring. Dripping 2, 5-diamino-2, 5-methyl hexane into the intermediate of fluorine and silicon, and controlling the temperature at 70-80 ℃. After the addition, the temperature was maintained for 8 hours. And after the reaction is finished, cooling to normal temperature to obtain the fluorine-silicon modified polymer.
2) Adding 0.5 part of BYK-P104 dispersant, 0.8 part of BYK-066N defoaming agent and dispersing for 10 minutes at 1200r/min in 47 parts of the prepared fluorine-silicon modified polymer. Then 8 parts of aluminum tripolyphosphate and 43.7 parts of rutile type titanium dioxide are added at the current dispersing speed. The dispersion was continued for 20 minutes and then ground to a fineness of 60 μm. And obtaining the component B.
A. And uniformly coating the component B on one surface of the clean tinplate according to the weight ratio of 65:100, and maintaining for 7 d. And (5) detecting.
Example 3
Component A is prepared and converted into TPA-100 by Asahi. The detection items comprise: viscosity, isocyanate content, clean by visual inspection and no foreign matter. And sealing for later use after the detection is qualified.
Preparation of component B, 1) preparation of fluorine-silicon modified secondary amino polymer: the metered perfluorobutyl ethylene was placed in a reactor and Pt catalyst was added. Vinyl trimethoxy silane was added thereto at normal temperature, and the reaction was stirred for 4 hours. Filtering to obtain the intermediate of fluorine and silicon.
And then putting the metered fluorosilicone intermediate into a reactor, and heating to 70 ℃ while stirring. Dripping ethylenediamine into the intermediate of fluorine and silicon, and controlling the temperature at 70-80 ℃. After the completion of the dropwise addition, the temperature was maintained and the reaction was carried out for 8 hours. And after the reaction is finished, cooling to normal temperature to obtain the fluorine-silicon modified polymer.
2) 58 parts of the prepared fluorine-silicon modified polymer is added with 0.5 part of BYK-9076 dispersant, 0.8 part of BYK-066N defoaming agent and dispersed for 10 minutes at 1200 r/min. Then 8 parts of aluminum phosphate and 32.7 parts of 800-mesh talc are added at the current dispersing speed. The dispersion was continued for 20 minutes and then ground to a fineness of 60 μm. And obtaining the component B.
A. And uniformly coating the component B on one surface of clean tinplate according to the weight ratio of 62:100, and maintaining for 7 d. And (5) detecting.
Comparative example 1
Component A is prepared from scientific prescription N3600. The detection items comprise: viscosity, isocyanate content, clean by visual inspection and no foreign matter. And sealing for later use after the detection is qualified.
The preparation of the component B is carried out,
54 parts of commercial polyaspartic ester is added with 0.3 part of BYK-P104S dispersant and 0.8 part of BYK-057 defoamer, and dispersed for 10 minutes at 1200r/min of 800-. Then 6 parts of aluminum tripolyphosphate and 38.9 parts of rutile type titanium dioxide are added at the current dispersing speed. The dispersion was continued for 20 minutes and then ground to a fineness of 60 μm. And obtaining the component B.
A. And uniformly coating the component B on one surface of the clean tinplate according to the weight ratio of 52:100, and maintaining for 7 d. And (5) detecting.
The following is a comparison of the properties of examples 1,2, 3 with comparative example 1
Detection form
In the above experiments, the synthesized fluorine-silicon modified polymer can be used in combination with hexamethylene diisocyanate trimer, and the solvent-free anticorrosive polyurea coating with excellent anticorrosive performance can be prepared by preferably selecting anticorrosive pigment and anticorrosive pigment filler. Compared with the comparative example 1, the fluorine-silicon modified polymer has more excellent corrosion resistance and weather resistance compared with polyaspartic acid ester in the examples 1,2 and 3, because the fluorine-silicon is added to form a super-hydrophobic and oleophobic surface, and rainwater, salt mist, oil stain and the like are not easy to hang on a paint film. Thereby obtaining more excellent corrosion resistance.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The self-cleaning type corrosion-resistant weather-resistant polyurea coating is characterized in that: consists of a component A and a component B:
the component A consists of 100 parts by weight of aliphatic isocyanate trimer,
the component B comprises the following components in parts by weight: 40-60 parts of fluorine-silicon modified secondary amine polymer, 5-10 parts of antirust pigment, 30-45 parts of anti-corrosion pigment filler, 0.1-1 part of dispersant and 0.1-1 part of defoaming agent.
2. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 1, wherein: the aliphatic isocyanate tripolymer is hexamethylene diisocyanate tripolymer.
3. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 1, wherein: the following steps: the fluorine-silicon modified secondary amino polymer is prepared by the following method:
putting the metered fluorine-containing monomer into a reactor, adding a Pt catalyst, adding silane at normal temperature, stirring for reacting for 4 hours, and filtering to obtain a fluorine-silicon intermediate;
firstly, placing the metered fluorosilicone intermediate into a reactor, heating to 70 ℃ while stirring, dripping aliphatic primary amine into the fluorosilicone intermediate, controlling the temperature to be 70-80 ℃, keeping the temperature for reacting for 8 hours after finishing dripping, and cooling to normal temperature after finishing reacting to obtain the fluorosilicone modified polymer.
4. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 3, wherein: the aliphatic primary amine comprises one or more of ethylenediamine, 1, 2-propylenediamine, 1, 4-butylenediamine, 1, 6-diaminohexane, 2, 5-diamino-2, 5-methylhexane, 2, 4-triethyl-1, 6-diaminohexane, 2,4, 4-triethyl-1, 6-diaminohexane, 1, 11-diaminoundecane, 1, 12-diaminoundecane and 1-amino-3, 3, 5-triethyl-5-aminomethylcyclohexane.
5. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 3, wherein: the fluorine-containing monomer is one or two of perfluoro-n-propyl vinyl ether, fluorine-containing alkyl allyl ether and perfluorobutyl ethylene.
6. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 3, wherein: the silane is one or two of trichloromethane, methyl trichlorosilane and vinyl trimethoxy silane.
7. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 1, wherein: the antirust pigment is one or more of orthophosphate, polyphosphate, phosphite, molybdate, borate and aluminum tripolyphosphate.
8. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 1, wherein: the anti-corrosion pigment and filler comprises one or more of rutile type titanium dioxide, 800-1200 mesh sericite powder, 800-1200 mesh talcum powder and 800-1200 mesh barium sulfate.
9. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 1, wherein: the dispersant is one or two of polycarboxylate and polyacrylate.
10. The self-cleaning type corrosion-resistant weather-resistant polyurea coating as claimed in claim 1, wherein: the defoaming agent is at least one of a silicone defoaming agent and a polyether defoaming agent.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834282A (en) * | 2014-03-03 | 2014-06-04 | 深圳市威尔地坪材料有限公司 | Weather-resistant anticorrosive polyurea coating material as well as preparation and use methods thereof |
| CN109439158A (en) * | 2018-10-23 | 2019-03-08 | 中国石油天然气集团公司 | A kind of weather-proof anticorrosive paint of solvent-free polyureas and preparation method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834282A (en) * | 2014-03-03 | 2014-06-04 | 深圳市威尔地坪材料有限公司 | Weather-resistant anticorrosive polyurea coating material as well as preparation and use methods thereof |
| CN109439158A (en) * | 2018-10-23 | 2019-03-08 | 中国石油天然气集团公司 | A kind of weather-proof anticorrosive paint of solvent-free polyureas and preparation method |
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Application publication date: 20220621 |