CN112266668A - Formula and preparation process of super-hydrophobic transparent finishing varnish - Google Patents
Formula and preparation process of super-hydrophobic transparent finishing varnish Download PDFInfo
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- CN112266668A CN112266668A CN202011050862.7A CN202011050862A CN112266668A CN 112266668 A CN112266668 A CN 112266668A CN 202011050862 A CN202011050862 A CN 202011050862A CN 112266668 A CN112266668 A CN 112266668A
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- parts
- silica sol
- finishing varnish
- super
- transparent finishing
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- 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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a formula and a preparation process of a super-hydrophobic transparent finishing varnish. Comprises the following components: 500 parts of water 340-: adding water and antiseptic into a dispersion tank, dispersing uniformly at 400 r, adjusting the rotation speed to 800 r, adding bentonite, dispersing uniformly, adjusting the rotation speed to 500 r, adding silica sol and methyl potassium silicate, dispersing uniformly, adding acrylic emulsion, stirring uniformly, filtering, and packaging. The paint has the advantages of excellent hydrophobic property, excellent weather resistance, high hardness, ideal effect on the surface finish of the real stone paint and high transparency.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a super-hydrophobic transparent finishing varnish.
Background
The coating is a continuous film which is coated on the surface of a protected or decorated object and can form firm adhesion with the object to be coated, and is a viscous liquid which is prepared by taking resin or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding auxiliary agents and using organic solvent or water.
The hydrophobic coating is a kind of coating, is often used in the scenes of building external walls, building internal walls, kitchens, restaurants and the like, and the currently marketed finish varnish with certain self-cleaning capability adopts a certain content of organosilicon acrylic copolymer emulsion as the finish varnish, and has limited self-cleaning capability.
Disclosure of Invention
Based on the above, there is a need to provide a formulation and a preparation process of a super-hydrophobic transparent finishing varnish, which aims at the problem of limited self-cleaning capability of the existing finishing varnish.
The formula of the super-hydrophobic transparent finishing varnish comprises the following components: 500 portions of water 340-.
Further, the acrylic emulsion is a cationic emulsifier protection emulsion.
Further, the silica sol has a solid content of 30% and a particle size of 20nm, and the potassium methyl silicate has a concentration of 30%.
Further, the silica sol is an organic modified silica sol.
Preferably, the total weight of the formulation components is 1000 parts by weight.
A preparation process of a super-hydrophobic transparent finishing varnish comprises the following steps: adding water and antiseptic into a dispersion tank, dispersing uniformly at 400 r, adjusting the rotation speed to 800 r, adding bentonite, dispersing uniformly, adjusting the rotation speed to 500 r, adding silica sol and methyl potassium silicate, dispersing uniformly, adding acrylic emulsion, stirring uniformly, filtering, and packaging.
The finishing varnish prepared by the method has excellent hydrophobic property, excellent weather resistance and high hardness, has ideal effect on the surface finishing of the stone paint after more than 3 years of use, has high transparency, artificial aging resistance of more than 2000 hours, wetting angle of more than 120 degrees and super-hydrophobic self-cleaning capability. The existing varnish product is not alkali-resistant generally, but the varnish prepared by the method is alkali-resistant emulsion, can be used on the surface, can also be used as a primer by permeating cement, the existing putty powder is loose generally, and the structure is harder and more stable by coating the varnish prepared by the method on the putty powder.
Detailed Description
The formula of the super-hydrophobic transparent finishing varnish comprises the following components: 500 parts of water 340-. The silica sol has a solid content of 30% and a particle size of 20nm, and the potassium methyl silicate is 30% potassium methyl silicate. The silica sol is organic modified silica sol. The total weight of the components of the formula is 1000 parts.
Example 1: 444 parts of water, 2 parts of preservative, 4 parts of bentonite, 200 parts of organically modified silica sol with the solid content of 30% and the particle size of 20nm, 100 parts of 30% potassium methyl silicate and 250 parts of acrylic emulsion; the implementation method comprises the following steps: hunan Huai, time: in 6 months of 2020, the varnish product prepared by the scheme of the invention has good bonding property with a cement board, the strength of the putty powder can be obviously increased by directly coating the varnish product on the putty powder, and the wetting angle is more than 120 degrees, thereby meeting the coating standard.
Example 2: 485 parts of water, 5 parts of preservative, 10 parts of bentonite, 150 parts of organic modified silica sol with the solid content of 30% and the particle size of 20nm, 200 parts of 30% potassium methyl silicate and 150 parts of acrylic emulsion; the implementation method comprises the following steps: hunan Huai, time: in 6 months of 2020, the varnish product prepared by the scheme of the invention has good bonding property with a cement board, the strength of the putty powder can be obviously increased by directly coating the varnish product on the putty powder, and the wetting angle is more than 120 degrees, thereby meeting the coating standard.
Example 3: 340 parts of water, 3 parts of preservative, 7 parts of bentonite, 200 parts of organic modified silica sol with the solid content of 30% and the particle size of 20nm, 200 parts of 30% potassium methyl silicate and 250 parts of acrylic emulsion; the implementation method comprises the following steps: hunan Huai, time: in 6 months of 2020, the varnish product prepared by the scheme of the invention has good bonding property with a cement board and short curing time, can obviously increase the strength of the putty powder by directly coating the varnish product on the putty powder, has a wetting angle of more than 120 degrees, and meets the coating standard.
Example 4: 500 parts of water, 4 parts of preservative, 6 parts of bentonite, 50 parts of organic modified silica sol with the solid content of 30% and the particle size of 20nm, 195 parts of 30% potassium methyl silicate and 245 parts of acrylic emulsion; the implementation method comprises the following steps: hunan Huai, time: in 6 months of 2020, the varnish product prepared by the scheme of the invention has good bonding property with a cement board and longer curing time, can obviously increase the strength of the putty powder when directly coated on the putty powder, has a wetting angle of more than 120 degrees, but has weaker hydrophobic property compared with the examples 1-3, and meets the coating standard.
Example 5: 490 parts by weight of water, 2 parts by weight of preservative, 8 parts by weight of bentonite, 200 parts by weight of organically modified silica sol with a solid content of 30% and a particle size of 20nm, 100 parts by weight of 30% potassium methylsilicate and 200 parts by weight of acrylic emulsion; the implementation place is as follows: hunan, Anxiang; time: in 8 months of 2020, the detection conditions are as follows:
| inspection item | Technical requirements | The result of the detection |
| State in the container | No hard block, and uniform state after stirring | No hard block, and uniform state after stirring |
| Workability | Brush coating two times without obstacle | Brush coating two times without obstacle |
| Appearance of coating film | Is normal | Is normal |
| Drying time | ≤2h | 1 |
| Alkali resistance | No abnormal condition for 24 hours | No abnormal condition for 24 hours |
| Water contact angle | ≥90o | 125o |
| Artificial aging resistance | ≥1000h | 2500h |
A preparation process of a super-hydrophobic transparent finishing varnish comprises the following steps: adding water and antiseptic Kathon into a dispersion tank, uniformly dispersing at 400 rpm, adjusting the rotation speed to 800 rpm, adding bentonite, uniformly dispersing, adjusting the rotation speed to 500 rpm, adding silica sol and methyl potassium silicate, uniformly dispersing, adding acrylic emulsion, uniformly stirring, filtering, and packaging. The preservative is used for preventing the emulsion from being corroded and even smelling, and plays a role in corrosion prevention. The bentonite has the thickening effect and is convenient to store. The protection core of the technical scheme is that 50-200 parts by weight of 30% organic modified silica sol and 150-250 parts by weight of acrylic emulsion (cationic emulsifier protection emulsion) are used, Si-o-Si is used as a main film forming substance, the water-based acrylic resin is used for toughening, pigment, filler and various auxiliaries are matched to prepare a water-based organic-inorganic hybrid coating, a reaction type methyl potassium silicate is added, and hydrophobic methyl silane is formed after water molecules of silicon hydroxyl are removed, so that the coating has hydrophobicity, and the wetting angle is larger than 120 degrees. The whole paint film and the surface of the base material have excellent hydrophobic performance, and the scheme is not available in the prior art and belongs to the blank in the industry.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. The formula of the super-hydrophobic transparent finishing varnish is characterized by comprising the following components: 500 portions of water 340-.
2. The formulation of a superhydrophobic transparent finishing varnish according to claim 1, wherein said acrylic emulsion is a cationic emulsifier-protected emulsion.
3. The formulation of a superhydrophobic transparent overcoat varnish of claim 1, wherein the silica sol is a silica sol having a solid content of 30% and a particle size of 20nm, and the potassium methyl silicate is 30% potassium methyl silicate.
4. The formulation of a superhydrophobic transparent finishing varnish according to claim 1, wherein the silica sol is an organically modified silica sol.
5. The formulation of a superhydrophobic transparent finishing varnish according to claim 1, wherein the total parts by weight of the formulation ingredients are 1000 parts by weight.
6. A preparation process of a super-hydrophobic transparent finishing varnish is characterized by comprising the following steps: adding water and a preservative into a dispersion cylinder, uniformly dispersing at 400 turns, adjusting the rotating speed to 800 turns, adding bentonite, uniformly dispersing, adjusting the rotating speed to 500 turns, adding silica sol and methyl potassium silicate, uniformly dispersing, adding acrylic emulsion, and uniformly stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011050862.7A CN112266668A (en) | 2020-09-29 | 2020-09-29 | Formula and preparation process of super-hydrophobic transparent finishing varnish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011050862.7A CN112266668A (en) | 2020-09-29 | 2020-09-29 | Formula and preparation process of super-hydrophobic transparent finishing varnish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112266668A true CN112266668A (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011050862.7A Withdrawn CN112266668A (en) | 2020-09-29 | 2020-09-29 | Formula and preparation process of super-hydrophobic transparent finishing varnish |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120128771A (en) * | 2011-05-18 | 2012-11-28 | 동부제철 주식회사 | Copolymer resin for metal surface treatment, composition comprising the copolymer resin and zinc-based metal plated steel sheets using the same |
| CN105001728A (en) * | 2015-07-03 | 2015-10-28 | 上海贝塔建筑科技有限公司 | Organic and inorganic complex finishing varnish |
| CN106380974A (en) * | 2016-08-30 | 2017-02-08 | 河北晨阳工贸集团有限公司 | Nano silica sol modified acrylic acid finishing varnish and preparation method thereof |
-
2020
- 2020-09-29 CN CN202011050862.7A patent/CN112266668A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120128771A (en) * | 2011-05-18 | 2012-11-28 | 동부제철 주식회사 | Copolymer resin for metal surface treatment, composition comprising the copolymer resin and zinc-based metal plated steel sheets using the same |
| CN105001728A (en) * | 2015-07-03 | 2015-10-28 | 上海贝塔建筑科技有限公司 | Organic and inorganic complex finishing varnish |
| CN106380974A (en) * | 2016-08-30 | 2017-02-08 | 河北晨阳工贸集团有限公司 | Nano silica sol modified acrylic acid finishing varnish and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 覃小红: "《微纳米纺织品与检测》", 31 January 2009, 东华大学出版社 * |
| 马保国: "《建筑功能材料》", 31 July 2004, 武汉理工大学出版社 * |
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Application publication date: 20210126 |