CN110791185A - Anti-fingerprint surface nano coating and production method thereof - Google Patents
Anti-fingerprint surface nano coating and production method thereof Download PDFInfo
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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
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
- C09D171/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C09D171/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C09D171/12—Polyphenylene oxides
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- 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
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/67—Particle size smaller than 100 nm
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
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Abstract
The invention belongs to the technical field of nano materials, and particularly relates to an anti-fingerprint surface nano coating and a production method thereof. The invention prepares the ether solvent, the nano particle emulsion, the surface tension reducing agent, the adhesive, the reducing wetting agent, the catalyst and the film forming agent in a specific way to form the coating paint, and the effective anti-fingerprint effect of the coating is achieved by an effective preparation and production mode. The invention has the advantages of small surface tension of the nano coating, large contact angle of liquid drops, good anti-fingerprint effect, scientific and reasonable material composition of the coating, simple and effective production method of the coating, economy and practicality and easy popularization.
Description
Technical Field
The invention belongs to the technical field of nano materials, and particularly relates to an anti-fingerprint surface nano coating and a production method thereof.
Background
When the touch screen is used, the use of the touch screen is easily affected by the contamination of fingerprints, and therefore the touch screen is required to have an anti-fingerprint effect. The current anti-fingerprint coating principle for touch-sensitive screen, most all utilize the hydrophobic property of coating paint to realize the effect of anti-soil anti-fingerprint, but on the other hand, the anti-soil anti-fingerprint coating paint of present common, its surface tension homogeneous phase is relatively great, contact angle is less when consequently sweat or spot liquid drop adhere to, adhere to relatively easily, anti-soil anti-fingerprint effect is relatively poor promptly, so urgently needed a surface tension on the market less, contact angle is great when sweat adheres to, the effectual novel high-efficient coating paint of anti-soil anti-fingerprint finally.
The patent publication No. CN103351777A, Chinese patent application No. 2013.10.16 discloses a nano antifouling and fingerprint-proof coating composition and a preparation method thereof, wherein the coating composition comprises the following components in parts by weight: the low-surface-energy oligomer A is 1-50 parts, the reactive compound B is 0.1-10 parts, the nano particles C are 0.1-8 parts, the wetting agent D is 0.1-8 parts, and the solvent E50-95 parts.
However, the coating composition disclosed in the patent of the invention has the problem that the contact angle is small when liquid drops are attached, and the final antifouling and anti-fingerprint effect is not obvious.
Disclosure of Invention
The invention aims to provide an anti-fingerprint surface nano coating and a production method thereof, which can form a coating by specifically preparing an ether solvent, a nano particle emulsion, a surface tension reducer, an adhesive, a reducing wetting agent, a catalyst and a film-forming agent, and achieve the effect of effectively resisting fingerprints of the coating by an efficient preparation and production mode. The invention has the advantages of small surface tension of the nano coating, large contact angle of liquid drops, good anti-fingerprint effect, scientific and reasonable material composition of the coating, simple and effective production method of the coating, economy and practicality and easy popularization.
The technical scheme adopted by the invention for solving the problems is as follows: an anti-fingerprint surface nano coating, wherein the coating of the coating comprises the following components: the nano-particle emulsion is polyphenyl ether resin emulsion of nano aluminum dioxide or nano titanium dioxide, and the particle size of the nano aluminum dioxide or the nano titanium dioxide is 12-15 nm.
In the invention, the ether solvent, the nanoparticle emulsion and the surface tension reducer ensure that the coating has a basic anti-fingerprint effect after being prepared into a coating, endow the coating with a lotus effect, increase the contact angle of sweat stain liquid drops by reducing the surface tension of the coating, ensure that the sweat stain liquid drops are not easy to remain and fingerprints are not easy to remain, and finally realize the anti-fingerprint effect.
On the other hand, the adhesive, the reducing wetting agent, the catalyst and the film forming agent are used for further crosslinking the reactive nanoparticle emulsion and the surface tension reducing agent, so that the basic characteristics of the coating are ensured, and the coating can be smoothly coated to form a stable and durable coating with an anti-fingerprint effect.
The further preferred technical scheme is as follows: the surface tension reducing agent is a fluorocarbon surfactant, the adhesive is one or a mixture of epoxy resin and polyurethane, the reducing wetting agent is n-heptaldehyde n-butyl mercaptan acetal, the catalyst is tri-n-octylphosphine oxide, and the film forming agent is one or a mixture of propylene glycol butyl ether and ethylene glycol butyl ether.
The further preferred technical scheme is as follows: the polar group at the tail end of the fluorocarbon surfactant is any one of a carboxylic group, a sulfonic group and a phosphate group, and CF is arranged on a fluorocarbon chain2The number of units is 8 or 9.
In the present invention, CF on the fluorocarbon chain2The number of units is in the range of 5-9, which has the effect of effectively reducing the surface tension of the nano-coating, and CF2The surface tension reducing effect is relatively obvious when the number of units is relatively increased, so that 8 or 9 CFs are selected2The range of the unit.
The further preferable technical scheme is that the preparation method of the n-heptanal n-butanethiol acetal sequentially comprises the following steps:
s1, adding n-heptanal and n-butyl bromide into the reaction kettle, and uniformly stirring;
s2, adding sodium thiosulfate and piperidine serving as a catalyst into the reaction kettle, introducing dry hydrogen chloride serving as a dehydrating agent, and reacting under a negative pressure condition;
s3, adding a sodium hydroxide solution into the reaction kettle to obtain an acetal product mixed solution;
s4, finally distilling the acetal product mixed liquor to obtain the final n-heptanal n-butylmercaptan acetal.
In the invention, n-heptanal n-butanethiol acetal is prepared by acetalizing three raw materials of n-heptanal, n-butyl bromide and sodium thiosulfate, and the acetalization rate is increased by drying hydrogen chloride serving as a dehydrator, so that an acetal product suitable as a reducing wetting agent is finally obtained.
The further preferred technical scheme is as follows: in step S2, the vacuum degree is 1200-1250Pa, the reaction temperature is 85-110 ℃, and the reaction time is 1.5-2.0 h.
The further preferred technical scheme is as follows: in step S4, the vacuum degree of the distillation operation is 150-185Pa, and the distillation temperature is 130-140 ℃.
The further preferred technical scheme is that the coating comprises the following components in parts by weight: 75-78 parts of tetrahydrofuran, 22-25 parts of nano-alumina polyphenyl ether resin emulsion, 1-6 parts of fluorocarbon surfactant, 1-3 parts of epoxy resin, 0.5-1.5 parts of n-heptaldehyde n-butyl mercaptan acetal, 1-2 parts of tri-n-octylphosphine oxide and 1-5 parts of ethylene glycol butyl ether.
A production method of an anti-fingerprint surface nano coating sequentially comprises the following production steps:
setting the rotation speed of a dispersion machine to be 300-500r/min and keeping, adding tetrahydrofuran, nano aluminum dioxide, fluorocarbon surfactant, n-heptanal n-butyl mercaptan acetal and tri-n-octyl phosphine oxide, mixing to form slurry, and adding epoxy resin to form gel solution;
and secondly, reducing the rotating speed to 100-120r/min and keeping, then adding ethylene glycol butyl ether, and uniformly mixing to obtain the final nano coating.
The further preferred technical scheme is as follows: in the first step, the disperser is heated to 85-95 ℃.
The further preferred technical scheme is as follows: in the second step, the temperature of the dispersion machine is 45-48 ℃, the dispersion time is 3-4h, and the dispersion machine is kept still for 10-26h after the dispersion is finished.
In the invention, the mode of preparing the coating by heating and mixing the dispersion machine has the advantages of high crosslinking reaction degree of all components of the coating and high final coating state forming speed of the gel solution, ensures that the coating formed by coating the coating has the advantages of high strength and good durability besides fingerprint resistance.
The invention prepares the ether solvent, the nano particle emulsion, the surface tension reducing agent, the adhesive, the reducing wetting agent, the catalyst and the film forming agent in a specific way to form the coating paint, and the effective anti-fingerprint effect of the coating is achieved by an effective preparation and production mode. The invention has the advantages of small surface tension of the nano coating, large contact angle of liquid drops, good anti-fingerprint effect, scientific and reasonable material composition of the coating, simple and effective production method of the coating, economy and practicality and easy popularization.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example 1
An anti-fingerprint surface nano coating, wherein the coating of the coating comprises the following components: the nano-particle emulsion is polyphenyl ether resin emulsion of nano-aluminum dioxide, and the particle size of the nano-aluminum dioxide is 12 nm.
The ether solvent is tetrahydrofuran, the surface tension reducer is a fluorocarbon surfactant, the adhesive is epoxy resin, the reducing wetting agent is n-heptanal n-butyl mercaptan acetal, the catalyst is tri-n-octylphosphine oxide, and the film forming agent is ethylene glycol butyl ether.
The polar group at the tail end of the fluorocarbon surfactant is a carboxylic group, and CF is arranged on a fluorocarbon chain2The number of cells is 8.
The preparation method of the n-heptanal n-butanethiol acetal sequentially comprises the following steps:
s1, adding n-heptanal and n-butyl bromide into the reaction kettle, and uniformly stirring;
s2, adding sodium thiosulfate and piperidine serving as a catalyst into the reaction kettle, introducing dry hydrogen chloride serving as a dehydrating agent, and reacting under a negative pressure condition;
s3, adding a sodium hydroxide solution into the reaction kettle to obtain an acetal product mixed solution;
s4, finally distilling the acetal product mixed liquor to obtain the final n-heptanal n-butylmercaptan acetal.
In step S2, the vacuum degree is 1200Pa, the reaction temperature is 85 ℃, and the reaction time is 1.5 h. In step S4, the degree of vacuum of the distillation operation was 150pa, and the distillation temperature was 130 ℃.
The coating comprises the following components in parts by weight: 75 parts of tetrahydrofuran, 22 parts of nano-aluminum dioxide polyphenyl ether resin emulsion, 1 part of fluorocarbon surfactant, 1 part of epoxy resin, 0.5 part of n-heptaldehyde n-butyl mercaptan acetal, 1 part of tri-n-octylphosphine oxide and 1 part of ethylene glycol butyl ether.
A production method of an anti-fingerprint surface nano coating sequentially comprises the following production steps:
setting the rotation speed of a dispersion machine to 300r/min and keeping, adding tetrahydrofuran, nano-alumina polyphenyl ether resin emulsion, fluorocarbon surfactant, n-heptaldehyde n-butyl mercaptan acetal and tri-n-octyl phosphine oxide, mixing to form slurry, and adding epoxy resin to form gel solution;
and secondly, reducing the rotating speed to 100r/min and keeping the rotating speed, then adding ethylene glycol butyl ether, and uniformly mixing to obtain the final nano coating.
In the first step, the disperser is heated to 85 ℃. In the second step, the temperature of the dispersion machine is 45 ℃, the dispersion time is 3 hours, and the dispersion machine is kept stand for 10 hours after the dispersion is finished.
In the embodiment, the coating is coated to form the anti-fingerprint coating, the measured critical surface tension is 25mN/m, and the contact angle of the simulated sweat drop of the common conventional component is 92 degrees, so that the coating has the advantage of good anti-fingerprint effect.
Example 2
An anti-fingerprint surface nano coating, wherein the coating of the coating comprises the following components: the nano titanium dioxide emulsion comprises an ether solvent, a nano particle emulsion, a surface tension reducer, an adhesive, a reduction wetting agent, a catalyst and a film forming agent, wherein the nano particle emulsion is a polyphenyl ether resin emulsion of nano titanium dioxide, and the particle size of the nano titanium dioxide is 13 nm.
The ether solvent is polyether, the surface tension reducer is a fluorocarbon surfactant, the adhesive is epoxy resin, the reducing wetting agent is n-heptanal n-butyl mercaptan acetal, the catalyst is tri-n-octylphosphine oxide, and the film forming agent is propylene glycol butyl ether.
The polar group at the tail end of the fluorocarbon surfactant is a sulfonic group, and CF is arranged on a fluorocarbon chain2The number of cells is 8.
The preparation method of the n-heptanal n-butanethiol acetal sequentially comprises the following steps:
s1, adding n-heptanal and n-butyl bromide into the reaction kettle, and uniformly stirring;
s2, adding sodium thiosulfate and piperidine serving as a catalyst into the reaction kettle, introducing dry hydrogen chloride serving as a dehydrating agent, and reacting under a negative pressure condition;
s3, adding a sodium hydroxide solution into the reaction kettle to obtain an acetal product mixed solution;
s4, finally distilling the acetal product mixed liquor to obtain the final n-heptanal n-butylmercaptan acetal.
In step S2, the vacuum degree is 1210pa, the reaction temperature is 100 ℃, and the reaction time is 2.0 h. In step S4, the degree of vacuum for the distillation was 160pa and the distillation temperature was 135 ℃.
The coating comprises the following components in parts by weight: 77 parts of polyether, 23 parts of nano titanium dioxide polyphenyl ether resin emulsion, 1 part of fluorocarbon surfactant, 1 part of epoxy resin, 1.0 part of n-heptaldehyde n-butyl mercaptan acetal, 12 parts of tri-n-octylphosphine oxide and 3 parts of propylene glycol butyl ether.
A production method of an anti-fingerprint surface nano coating sequentially comprises the following production steps:
setting the rotation speed of a dispersion machine to 400r/min and keeping the rotation speed, adding polyether, nano titanium dioxide polyphenyl ether resin emulsion, fluorocarbon surfactant, n-heptaldehyde n-butyl mercaptan acetal and tri-n-octyl phosphine oxide, mixing to form slurry, and adding epoxy resin to form gel solution;
and secondly, reducing the rotating speed to 120r/min and keeping the rotating speed, then adding propylene glycol butyl ether, and uniformly mixing to obtain the final nano coating.
In the first step, the disperser is heated to 90 ℃. In the second step, the temperature of the dispersion machine is 46 ℃, the dispersion time is 4 hours, and the dispersion machine is kept stand for 20 hours after the dispersion is finished.
In the embodiment, the coating is coated to form the anti-fingerprint coating, the measured critical surface tension is 26mN/m, and the contact angle of the simulated sweat drop of the common conventional component is 90 degrees, so that the coating has the advantage of good anti-fingerprint effect.
Example 3
An anti-fingerprint surface nano coating, wherein the coating of the coating comprises the following components: the nano titanium dioxide emulsion comprises an ether solvent, a nano particle emulsion, a surface tension reducer, an adhesive, a reduction wetting agent, a catalyst and a film forming agent, wherein the nano particle emulsion is a polyphenyl ether resin emulsion of nano titanium dioxide, and the particle size of the nano titanium dioxide is 15 nm.
The ether solvent is polyether, the surface tension reducer is a fluorocarbon surfactant, the adhesive is polyurethane, the reducing wetting agent is n-heptanal n-butyl mercaptan acetal, the catalyst is tri-n-octylphosphine oxide, and the film forming agent is propylene glycol butyl ether.
The polar group at the tail end of the fluorocarbon surfactant is phosphate group, and CF is on a fluorocarbon chain2The number of cells is 9.
The preparation method of the n-heptanal n-butanethiol acetal sequentially comprises the following steps:
s1, adding n-heptanal and n-butyl bromide into the reaction kettle, and uniformly stirring;
s2, adding sodium thiosulfate and piperidine serving as a catalyst into the reaction kettle, introducing dry hydrogen chloride serving as a dehydrating agent, and reacting under a negative pressure condition;
s3, adding a sodium hydroxide solution into the reaction kettle to obtain an acetal product mixed solution;
s4, finally distilling the acetal product mixed liquor to obtain the final n-heptanal n-butylmercaptan acetal.
In step S2, the vacuum degree is 1250pa, the reaction temperature is 100 ℃, and the reaction time is 2.0 h. In step S4, the degree of vacuum of the distillation operation was 185pa, and the distillation temperature was 140 ℃.
The coating comprises the following components in parts by weight: 77 parts of polyether, 23 parts of nano titanium dioxide polyphenyl ether resin emulsion, 1 part of fluorocarbon surfactant, 1 part of polyurethane, 1.0 part of n-heptaldehyde n-butyl mercaptan acetal, 12 parts of tri-n-octylphosphine oxide and 3 parts of propylene glycol butyl ether.
A production method of an anti-fingerprint surface nano coating sequentially comprises the following production steps:
setting the rotation speed of a dispersion machine to 400r/min and keeping the rotation speed, adding polyether, nano titanium dioxide polyphenyl ether resin emulsion, fluorocarbon surfactant, n-heptanal n-butyl mercaptan acetal and tri-n-octyl phosphine oxide, mixing to form slurry, and adding polyurethane to form gel solution;
and secondly, reducing the rotating speed to 120r/min and keeping the rotating speed, then adding propylene glycol butyl ether, and uniformly mixing to obtain the final nano coating.
In the first step, the disperser is heated to 95 ℃. In the second step, the temperature of the dispersion machine is 46 ℃, the dispersion time is 4 hours, and the dispersion machine is kept stand for 26 hours after the dispersion is finished.
In the embodiment, the coating is coated to form the anti-fingerprint coating, the measured critical surface tension is 28mN/m, and the contact angle of the simulated sweat drop of the common conventional component is 85 degrees, so that the coating has the advantage of good anti-fingerprint effect.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.
Claims (10)
1. An anti-fingerprint surface nano coating, characterized in that the coating of the coating comprises the following components: the nano-particle emulsion is polyphenyl ether resin emulsion of nano aluminum dioxide or nano titanium dioxide, and the particle size of the nano aluminum dioxide or the nano titanium dioxide is 12-15 nm.
2. The fingerprint resistant surface nanocoating of claim 1, wherein: the surface tension reducing agent is a fluorocarbon surfactant, the adhesive is one or a mixture of epoxy resin and polyurethane, the reducing wetting agent is n-heptaldehyde n-butyl mercaptan acetal, the catalyst is tri-n-octylphosphine oxide, and the film forming agent is one or a mixture of propylene glycol butyl ether and ethylene glycol butyl ether.
3. The fingerprint resistant surface nanocoating of claim 2, wherein: the polar group at the tail end of the fluorocarbon surfactant is any one of a carboxylic group, a sulfonic group and a phosphate group, and CF is arranged on a fluorocarbon chain2The number of units is 8 or 9.
4. The fingerprint resistant surface nanocoating of claim 2, wherein said n-heptanal n-butanethiol acetal production method comprises the following steps in order:
s1, adding n-heptanal and n-butyl bromide into the reaction kettle, and uniformly stirring;
s2, adding sodium thiosulfate and piperidine serving as a catalyst into the reaction kettle, introducing dry hydrogen chloride serving as a dehydrating agent, and reacting under a negative pressure condition;
s3, adding a sodium hydroxide solution into the reaction kettle to obtain an acetal product mixed solution;
s4, finally distilling the acetal product mixed liquor to obtain the final n-heptanal n-butylmercaptan acetal.
5. The fingerprint resistant surface nanocoating of claim 4, wherein: in step S2, the vacuum degree is 1200-1250Pa, the reaction temperature is 85-110 ℃, and the reaction time is 1.5-2.0 h.
6. The fingerprint resistant surface nanocoating of claim 4, wherein: in step S4, the vacuum degree of the distillation operation is 150-185Pa, and the distillation temperature is 130-140 ℃.
7. The fingerprint resistant surface nanocoating of claim 2, wherein said coating comprises the following components by weight: 75-78 parts of tetrahydrofuran, 22-25 parts of nano-alumina polyphenyl ether resin emulsion, 1-6 parts of fluorocarbon surfactant, 1-3 parts of epoxy resin, 0.5-1.5 parts of n-heptaldehyde n-butyl mercaptan acetal, 1-2 parts of tri-n-octylphosphine oxide and 1-5 parts of ethylene glycol butyl ether.
8. A process for the production of the fingerprint resistant surface nanocoating according to claim 2, characterized in that it comprises the following production steps in sequence:
setting the rotation speed of a dispersion machine to be 300-500r/min and keeping, adding tetrahydrofuran, nano-alumina polyphenyl ether resin emulsion, fluorocarbon surfactant, n-heptaldehyde n-butyl mercaptan acetal and tri-n-octylphosphine oxide, mixing to form slurry, and adding epoxy resin to form gel solution;
and secondly, reducing the rotating speed to 100-120r/min and keeping, then adding ethylene glycol butyl ether, and uniformly mixing to obtain the final nano coating.
9. The method for producing a fingerprint resistant surface nanocoating according to claim 8, wherein: in the first step, the disperser is heated to 85-95 ℃.
10. The method for producing a fingerprint resistant surface nanocoating according to claim 8, wherein: in the second step, the temperature of the dispersion machine is 45-48 ℃, the dispersion time is 3-4h, and the dispersion machine is kept still for 10-26h after the dispersion is finished.
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