CN112759987A - Outdoor high-performance fluorocarbon coating and preparation method thereof - Google Patents
Outdoor high-performance fluorocarbon coating and preparation method thereof Download PDFInfo
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- CN112759987A CN112759987A CN202110161992.6A CN202110161992A CN112759987A CN 112759987 A CN112759987 A CN 112759987A CN 202110161992 A CN202110161992 A CN 202110161992A CN 112759987 A CN112759987 A CN 112759987A
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- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000000576 coating method Methods 0.000 title claims abstract description 59
- 239000011248 coating agent Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000049 pigment Substances 0.000 claims abstract description 21
- 239000002562 thickening agent Substances 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000000839 emulsion Substances 0.000 claims abstract description 14
- 239000000080 wetting agent Substances 0.000 claims abstract description 13
- 239000002270 dispersing agent Substances 0.000 claims abstract description 12
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 10
- 239000003899 bactericide agent Substances 0.000 claims abstract description 10
- 239000013530 defoamer Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 12
- 239000002518 antifoaming agent Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 239000012257 stirred material Substances 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- LXOFYPKXCSULTL-UHFFFAOYSA-N 2,4,7,9-tetramethyldec-5-yne-4,7-diol Chemical compound CC(C)CC(C)(O)C#CC(C)(O)CC(C)C LXOFYPKXCSULTL-UHFFFAOYSA-N 0.000 claims description 3
- 229910014314 BYK190 Inorganic materials 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000009775 high-speed stirring Methods 0.000 claims description 3
- 230000003115 biocidal effect Effects 0.000 claims 1
- 239000003139 biocide Substances 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 19
- 238000010276 construction Methods 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 238000003915 air pollution Methods 0.000 abstract description 2
- 239000002033 PVDF binder Substances 0.000 description 20
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000002023 wood 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
- 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
- C09D7/20—Diluents or solvents
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 discloses an outdoor high-performance fluorocarbon coating which comprises the following components in percentage by weight: 40-60% of water-based fluorocarbon emulsion, 1-3% of dispersant, 0.6-2% of defoamer, 15-30% of pigment and filler, 0.3-1 part of wetting agent, 0.1-1% of flatting agent, 0.1-1% of bactericide, 0.3-2% of thickener and the balance of water; the thickening agent comprises digao 3010 and digao 3030; the mass ratio of the digao 3010 to the digao 3030 is 1: 1-6. The invention integrates the environmental protection of water paint and the high performance of fluorocarbon paint, has excellent durability, easy construction, cleanness and long-term excellent light and color retention performance, simultaneously takes water as solvent, eliminates the danger of fire during construction, and reduces the air pollution and the harm to constructors. Compared with the prior art, the outdoor high-performance fluorocarbon coating has better adhesive force and is more beneficial to popularization and application.
Description
Technical Field
The invention belongs to the technical field of water-based coatings, and particularly relates to an outdoor high-performance fluorocarbon coating and a preparation method thereof.
Background
The fluororesin is a high-molecular compound containing fluorine atoms on carbon atoms of a main chain or a side chain, and the polyvinylidene fluoride resin (PVDF) is a resin matrix for preparing the PVDF fluorocarbon coating. The fluorocarbon bond formed by fluorine with the largest electronegativity in elements has excellent firmness and symmetry, so that the PVDF fluorocarbon coating has excellent performances: chemical corrosion resistance, oxidation resistance, high mechanical strength and toughness, excellent weather resistance and the like, and has been widely applied to the field of buildings.
However, most of the traditional PVDF coatings are organic solvent type coatings and powder coatings, and the organic solvent type PVDF fluorocarbon coatings volatilize VOC (volatile organic solvent) in the preparation process and the curing process, so that the environmental protection performance is poor; the powder PVDF fluorocarbon coating has the defects of harsh curing temperature condition, high construction difficulty and the like; limiting the application of PVDF coatings.
The water-based fluorocarbon coating prepared by taking water as a medium responds to the development policy of low-VOC even VOC-free environment-friendly coatings, is suitable for market development and the upgrading of the coating industry, and responds to the desire of people for 'green coatings'.
For example, CN106009968A discloses a water-based PVDF fluorocarbon coating and a preparation method thereof, which comprises the following components in parts by weight: 20-45 parts of water-based PVDF fluorocarbon emulsion, 10-30 parts of water-based acrylic emulsion, 1-7 parts of curing agent, 10-35 parts of pigment and filler, 7-15 parts of auxiliary agent and 0-20 parts of water. For another example, CN107151493A discloses an aqueous PVDF fluorocarbon coating comprising: water PVDF fluorocarbon paint primer (I); water PVDF fluorocarbon paint finish coat (II); water PVDF fluorocarbon coating metal flashing paint (III); and water-based PVDF fluorocarbon paint varnish (IV), wherein the water-based PVDF fluorocarbon paint primer (I), the water-based PVDF fluorocarbon paint finish (II), the water-based PVDF fluorocarbon paint metal flash paint (III), and the water-based PVDF fluorocarbon paint varnish (IV) are sequentially coated with one or more. The paint comprises the following components: 10-75 wt% of PVDF fluorocarbon emulsion, 25-50 wt% of acrylic emulsion, 5-15 wt% of film forming additive, 10-30 wt% of pigment, 15-30 wt% of filler, 1-3 wt% of additive, 0.1-0.5 wt% of sterilization mildew inhibitor, 0.5-3 wt% of thickening agent and the balance of water.
However, the existing water-based fluorocarbon coating on the market is mainly poor in adhesive force, and is not beneficial to popularization and application of the water-based fluorocarbon coating.
Disclosure of Invention
In order to solve the technical problems, the invention provides an outdoor high-performance fluorocarbon coating.
In order to achieve the purpose, the invention adopts the following technical scheme:
an outdoor high-performance fluorocarbon coating comprises the following components in percentage by weight: 40-60% of water-based fluorocarbon emulsion, 1-3% of dispersant, 0.6-2% of defoamer, 15-30% of pigment and filler, 0.3-1% of wetting agent, 0.1-1% of flatting agent, 0.1-1% of bactericide, 0.3-2% of thickener and the balance of water.
Preferably, the dispersant is BYK190 and/or dyhi 760.
Preferably, the anti-foaming agent is at least one of Surfynol 104E, Digao 822 and Digao 825.
Preferably, the pigment and filler is at least one of titanium dioxide, calcium carbonate, mica powder and barium sulfate.
Preferably, the wetting agent is at least one of BYK-3455, dike height 265, and dike height 270.
Preferably, the leveling agent is dyno 410, dyno 450, or BYK 333.
Preferably, the bactericide is dow
LX15 and/or craine clariant jmac Composite PG.
Preferably, the thickening agent comprises diquan 3010 and diquan 3030, and further preferably, the mass ratio of diquan 3010 to diquan 3030 is 1: 1-6; most preferably 1: 3.
The invention also provides a preparation method of the outdoor high-performance fluorocarbon coating, which comprises the following steps:
s1, sequentially adding a dispersing agent and a defoaming agent into the low-speed stirred water, and continuously stirring at a low speed for 5-15min to obtain a material 1;
s2, adding pigments and fillers into the low-speed stirred material 1, continuing to stir at a high speed for 10-20min, and grinding until the fineness is less than 25 micrometers to obtain a material 2;
s3, sequentially adding a wetting agent, the balance of a defoaming agent, a flatting agent and a bactericide into the high-speed stirred aqueous fluorocarbon emulsion to obtain a material 3;
s4, adding the material 2 obtained in the step S2 into the material 3 stirred at a low speed, and stirring at the low speed for 5-15min to obtain a material 4;
and S5, adding a thickening agent into the high-speed stirred material 4, and stirring until the viscosity is 60-90ku to obtain the outdoor high-performance fluorocarbon coating.
Preferably, the rotation speed of the low-speed stirring in the steps S1, S2 and S4 is 400-; the rotation speed of the high-speed stirring in the steps S2, S3 and S5 is 1200-1800 r/min.
Preferably, the rate of addition of the components in said step is 5-10 ml/s.
The invention has the beneficial effects that:
the outdoor high-performance fluorocarbon coating integrates the environmental protection of water-based paint and the high performance of fluorocarbon paint, has excellent durability, easy construction, cleanness and long-term excellent light and color retention, simultaneously takes water as a solvent, eliminates the danger of fire during construction, and reduces the air pollution and the harm to constructors. Compared with the prior art, the outdoor high-performance fluorocarbon coating has better adhesive force and is more beneficial to popularization and application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention are further described below.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The raw materials used in the present invention are all common commercial products unless otherwise specified.
Basic embodiment of outdoor high-performance fluorocarbon coating and preparation method thereof
An outdoor high-performance fluorocarbon coating comprises the following components in percentage by weight: 40-60% of water-based fluorocarbon emulsion, 1-3% of dispersant, 0.6-2% of defoamer, 15-30% of pigment and filler, 0.3-1% of wetting agent, 0.1-1% of flatting agent, 0.1-1% of bactericide, 0.3-2% of thickener and the balance of water.
Preferably, the dispersant is BYK190 and/or dyhi 760.
Preferably, the anti-foaming agent is at least one of Surfynol 104E, Digao 822 and Digao 825.
Preferably, the pigment and filler is at least one of titanium dioxide, calcium carbonate, mica powder and barium sulfate.
Preferably, the wetting agent is at least one of BYK-3455, dike height 265, and dike height 270.
Preferably, the leveling agent is dyno 410, dyno 450, or BYK 333.
Preferably, the bactericide is dow
LX15 and/or craine clariant jmac Composite PG.
Preferably, the thickening agent comprises diquan 3010 and diquan 3030, and further preferably, the mass ratio of diquan 3010 to diquan 3030 is 1: 1-6; most preferably 1: 3.
The invention also provides a preparation method of the outdoor high-performance fluorocarbon coating, which comprises the following steps:
s1, sequentially adding a dispersing agent and a defoaming agent into the low-speed stirred water, and continuously stirring at a low speed for 5-15min to obtain a material 1;
s2, adding pigments and fillers into the low-speed stirred material 1, continuing to stir at a high speed for 10-20min, and grinding until the fineness is less than 25 micrometers to obtain a material 2;
s3, sequentially adding a wetting agent, the balance of a defoaming agent, a flatting agent and a bactericide into the high-speed stirred aqueous fluorocarbon emulsion to obtain a material 3;
s4, adding the material 2 obtained in the step S2 into the material 3 stirred at a low speed, and stirring at the low speed for 5-15min to obtain a material 4;
and S5, adding a thickening agent into the high-speed stirred material 4, and stirring until the viscosity is 60-90ku to obtain the outdoor high-performance fluorocarbon coating.
Preferably, the rotation speed of the low-speed stirring in the steps S1, S2 and S4 is 400-; the rotation speed of the high-speed stirring in the steps S2, S3 and S5 is 1200-1800 r/min.
Preferably, the rate of addition of the components in said step is 5-10 ml/s.
Examples 1-5 outdoor high-performance fluorocarbon coating and preparation method thereof
The composition and amount of one of the outdoor high performance fluorocarbon coatings described in examples 1-5 is shown in table 1.
TABLE 1 composition and amount (% by weight) of super weatherable water-based paint for outdoor wood
The preparation method of the outdoor high-performance fluorocarbon coating comprises the following steps:
s1, adding a dispersing agent and a defoaming agent into water at the rotating speed of 600r/min in sequence at the adding speed of 7ml/S, and continuing stirring at the rotating speed of 600r/min for 10min to obtain a material 1;
s2, adding pigments and fillers into the material 1 at the rotating speed of 600r/min according to the adding speed of 7ml/S, stirring at the speed of 1500r/min for 15min, and grinding until the fineness is less than 25 micrometers to obtain a material 2;
s3, sequentially adding a wetting agent, the balance of a defoaming agent, a leveling agent and a bactericide into the water-based fluorocarbon emulsion at the rotating speed of 1500r/min at the adding speed of 7ml/S to obtain a material 3;
s4, adding the material 2 obtained in the step S2 into the material 3 with the rotating speed of 600r/min according to the adding speed of 7ml/S, and stirring for 10min at the stirring speed of 600r/min to obtain a material 4;
and S5, adding a thickening agent into the material 4 at the rotating speed of 1500r/min at the adding speed of 7ml/S, and stirring until the viscosity is 60-90ku to obtain the outdoor high-performance fluorocarbon coating.
Comparative example 1
The difference between the comparative example and the example 5 is that the thickening agent is digao 3010 and digao 3030 with the mass ratio of 3:1, and the pigment and the filler are mixed by mass ratio of 1: 6: 4 titanium dioxide, mica powder and barium sulfate, and the wetting agent is 1.2 percent.
Comparative example 2
The comparative example differs from example 5 in that the thickener is a mixture of 1: 9 of digao 3010 and digao 3030, wherein the pigment and the filler are mixed according to the mass ratio of 3: 1: 5 titanium dioxide, mica powder and barium sulfate, and the leveling agent is 1.2 percent.
Comparative example 3
The comparative example differs from example 5 in that the thickener is a mixture of 1: 9 of digao 3010 and digao 3030, wherein the pigment and the filler are mixed according to the mass ratio of 3: 1: 5 titanium dioxide, mica powder and barium sulfate, and the leveling agent is 1.2 percent.
Performance testing
The outdoor high-performance fluorocarbon coatings prepared in examples 1-5 and comparative examples 1-2 were uniformly coated on the surface of the steel plate and then sand-blasted, and adhesion tests were performed after standing and curing (15 ℃) for 2 days, and the results are shown in table 2.
TABLE 2
As can be seen from the above table, the adhesion of the outdoor high-performance fluorocarbon coating of the embodiments 1 to 5 of the invention is 13 to 19MPa, which shows that the outdoor high-performance fluorocarbon coating prepared by the invention has better adhesion.
The aqueous fluorocarbon emulsion is a special acrylic ester and special fluororesin copolymer anionic emulsion, is used as a main film forming material of an aqueous fluorocarbon coating, and has excellent weather resistance, water resistance, pollution resistance and chemical resistance which are not much different from those of solvent type fluorocarbon resin; the dispersing agent can prevent the pigment from flocculating, so that the hue and the tinting strength of the coating and the pigment slurry are stabilized, the flooding and the floating in the pigment mixture are reduced, the storage stability of a system is increased, the wetting and the gloss of the pigment are improved, the viscosity of the grinding material is reduced, the defoaming agent is added in two times, the foam generated by the surfactant and the mechanical stirring can be effectively eliminated, the effect is better, the pigment and the filler provide color decoration for a coating film, and more physical and chemical properties such as covering property, light resistance, weather resistance, temperature resistance, chemical resistance, gloss, mechanical strength and the like can be provided for the coating, and in addition, the filling effect can be played, and the cost is reduced; the wetting agent can strongly reduce the dynamic and static surface tension of the system, thereby obviously improving the wetting capacity and the leveling property of the base material and improving the adhesive force to the base material; the leveling agent can promote the coating to form a flat, smooth and uniform coating film in the drying film-forming process, can effectively reduce the surface tension of the coating liquid, improve the leveling property and uniformity of the coating liquid, reduce the possibility of generating spots and stains during brushing, increase the coverage property and ensure uniform film formation; the thickener is prepared from digao 3010 and digao 3030, wherein digao 3010 is a Newtonian polyurethane thickener, digao 3030 is a plastic polyurethane thickener, and the digao and the plastic polyurethane thickener are matched for use, so that the paint construction is facilitated, and the defects of sagging, thick edges and the like of the paint are prevented.
In conclusion, the outdoor high-performance fluorocarbon coating integrates the environmental protection of the water-based paint and the high performance of the fluorocarbon paint, has excellent durability, easy construction, cleanness and long-term excellent light and color retention, simultaneously takes water as a solvent, eliminates the risk of fire during construction, and reduces the atmospheric pollution and the harm to constructors. Compared with the prior art, the outdoor high-performance fluorocarbon coating has better adhesive force and is more beneficial to popularization and application.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (10)
1. An outdoor high-performance fluorocarbon coating is characterized by comprising the following components in percentage by weight: 40-60% of water-based fluorocarbon emulsion, 1-3% of dispersant, 0.6-2% of defoamer, 15-30% of pigment and filler, 0.3-1 part of wetting agent, 0.1-1% of flatting agent, 0.1-1% of bactericide, 0.3-2% of thickener and the balance of water;
the thickening agent comprises digao 3010 and digao 3030; the mass ratio of the digao 3010 to the digao 3030 is 1: 1-6.
2. An outdoor high performance fluorocarbon coating according to claim 1, characterized in that said dispersant is BYK190 and/or dyhi 760.
3. The outdoor high performance fluorocarbon coating of claim 1, wherein the defoamer is at least one of Surfynol 104E, Digao 822 and Digao 825.
4. An outdoor high performance fluorocarbon coating according to claim 1, characterized in that said pigment and filler is at least one of titanium dioxide, calcium carbonate, mica powder and barium sulfate.
5. The outdoor high performance fluorocarbon coating of claim 1, wherein the wetting agent is at least one of BYK-3455, dyad 265, and dyad 270.
6. An outdoor high performance fluorocarbon coating according to claim 1, wherein said leveling agent is digan 410, digan 450 or BYK 333.
7. The outdoor high performance fluorocarbon coating of claim 1, wherein the biocide is dow ™
LX15 and/or craine clariant jmac Composite PG.
8. The preparation method of outdoor high-performance fluorocarbon coating according to any one of claims 1 to 7, characterized by comprising the following steps:
s1, sequentially adding a dispersing agent and a defoaming agent into the low-speed stirred water, and continuously stirring at a low speed for 5-15min to obtain a material 1;
s2, adding pigments and fillers into the low-speed stirred material 1, continuing to stir at a high speed for 10-20min, and grinding until the fineness is less than 25 micrometers to obtain a material 2;
s3, sequentially adding a wetting agent, the balance of a defoaming agent, a flatting agent and a bactericide into the high-speed stirred aqueous fluorocarbon emulsion to obtain a material 3;
s4, adding the material 2 obtained in the step S2 into the material 3 stirred at a low speed, and stirring at the low speed for 5-15min to obtain a material 4;
and S5, adding a thickening agent into the high-speed stirred material 4, and stirring until the viscosity is 60-90ku to obtain the outdoor high-performance fluorocarbon coating.
9. The method as claimed in claim 8, wherein the rotation speed of the low speed stirring in steps S1, S2 and S4 is 400-800 r/min; the rotation speed of the high-speed stirring in the steps S2, S3 and S5 is 1200-1800 r/min.
10. The method according to claim 8, wherein the component is added at a rate of 5 to 10ml/s in the step.
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| CN202110161992.6A CN112759987A (en) | 2021-02-05 | 2021-02-05 | Outdoor high-performance fluorocarbon coating and preparation method thereof |
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| CN103666130A (en) * | 2013-09-27 | 2014-03-26 | 青岛益群漆业集团有限公司 | Preparation method of full water-borne fluorocarbon acid-resistant texture coating |
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Application publication date: 20210507 |