CN114058229A - Novel reflective coating and preparation method thereof - Google Patents
Novel reflective coating and preparation method thereof Download PDFInfo
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- CN114058229A CN114058229A CN202111469513.3A CN202111469513A CN114058229A CN 114058229 A CN114058229 A CN 114058229A CN 202111469513 A CN202111469513 A CN 202111469513A CN 114058229 A CN114058229 A CN 114058229A
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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
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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
- C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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Abstract
A novel reflective coating comprises the following raw materials in parts by weight: the invention also provides a preparation method of the novel reflective coating, which has good lightness and light reflectance ratio, high temperature resistance, yellowing resistance, hardness and adhesive force, can still maintain higher light reflection rate after long-term use, and is not easy to discolor under the high-temperature condition; the reflective coating can be applied to the fields of illumination, exterior walls and the like.
Description
Technical Field
The invention relates to the field of paint production, in particular to a novel reflective paint and a preparation method thereof.
Background
At present, reflective coatings are widely applied to the fields of light distribution devices, LEDs and the like, such as light sources, lamps and the like, light sources of flat panel displays in the prior art generally adopt a direct-projection and high-condensation structure, the adoption of the structure increases the brightness of the lamp, but a serious problem is caused, namely light source pollution, the high-condensation lamp source directly stings eyes of people, the comfort level of people in a room is affected, and certain damage is caused to human bodies, so that the reflective coatings are complained by many consumers.
The diffuse reflection refers to a phenomenon that light is irregularly reflected in various directions by a rough surface. When light is irradiated on the surface of an object, if the surface of the object is ideally flat, the light flux is reflected by the ideal plane except the light flux absorbed by the object, and the light flux is called total reflection or pure reflection.
However, since the surface of an actual object is uneven in a microscopic view, the light is diffused in the circumferential direction, i.e., diffusely reflected. The diffuse reflection coating utilizes the irregular diffuse reflection and good light transmittance of the optical-grade pigment to light, so that the transmission direction of the passing light is irregularly changed, and the diffuse reflection coating is equivalent to a plurality of secondary light sources. In addition, the diffuse reflective coating is not only related to the properties of the reflective material itself, but also to the surface morphology, i.e. to the surface roughness.
But excessive surface roughness also results in lower diffuse reflectance. Because many lumps are formed on top of each other, deeper channels are formed so that light reaches the bottom of the substrate, resulting in a reduction of reflected light. Therefore, a moderately rough surface can be formed by a method of thinly coating multiple layers, and a better diffuse reflection effect is achieved. In addition, the dried coating surface layer is pressed to eliminate excessive roughness, and the diffuse reflectance can be improved. The light source ghost is solved, the light effect achieves the shadowless effect, the light effect becomes soft and uniform, the light energy is basically not lost, and the energy-saving effect is fully displayed. The diffuse reflection coating mainly comprises a film forming substance, a functional filler and an auxiliary agent. Wherein the selection of the pigment and the filler almost determines the level of diffuse reflectance. Factors such as optical coefficient, particle size, shape and crystal form of the pigment and filler can affect diffuse reflectance.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a novel reflective coating with better performance and a preparation method thereof.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the invention relates to a novel reflective coating, which comprises the following raw materials in parts by weight:
1-1.5 parts of hydroxyethyl cellulose;
15-20 parts of elastic acrylic emulsion;
40-50 parts of silicone-acrylate emulsion;
8-15 parts of urea-formaldehyde resin
2-4 parts of nano titanium dioxide;
100 portions of water and 200 portions of water;
2-4 parts of a dispersing agent;
0-1 part of pH regulator;
50-100 parts of titanium dioxide;
5-10 parts of a leveling agent;
5-15 parts of barium sulfate
1-5 parts of mica powder
100 portions of coarse whiting and 200 portions of coarse whiting;
50-200 parts of acrylic emulsion;
1-5 parts of a thickening agent;
10-20 parts of a film-forming assistant;
5-20 parts of pigment.
The improvement of the invention is that the titanium dioxide is anatase titanium dioxide with the particle size of 900-1500 nm; the barium sulfate powder has the particle size of 500-800 nm.
The improvement of the invention is that the mass ratio of the titanium dioxide to the barium sulfate is 10: 1-4.
The improvement of the invention is that the dispersant is 5040.
The invention further provides a preparation method of the novel reflective coating, which comprises the following steps:
step 1, weighing 1-1.5 parts of hydroxyethyl cellulose and 40-50 parts of silicone-acrylic emulsion, dissolving in 200 parts of 100-containing water, using 0-1 part of pH regulator, regulating the pH value to 8-9, adding 8-15 parts of urea-formaldehyde resin, 50-100 parts of titanium dioxide, 5-15 parts of barium sulfate, 1-5 parts of mica powder and a dispersing agent into a dispersion machine after the hydroxyethyl cellulose is completely dissolved, dispersing at a high speed of 800-containing 1200rpm for 8-10min, reducing the rotating speed to 300-containing 500rpm, adding 15-20 parts of elastic acrylic emulsion, and stirring for 20-40min to obtain a first mixture;
step 2, transferring the first mixture into a grinding machine, adding 100-200 parts of coarse whiting and 2-4 parts of nano titanium dioxide, grinding for 60-240 minutes, and controlling the rotating speed to be 2000-3000 r/min in the grinding process to prepare a second mixture;
step 3, adding 5-10 parts of leveling agent, 50-200 parts of acrylic emulsion, 1-5 parts of thickening agent, 10-20 parts of film-forming assistant and 5-20 parts of cold pigment into the second mixture to form a third mixture; and transferring to a dispersion machine for dispersion, wherein the rotation speed is controlled to be 2000-3000 r/min in the dispersion process, and obtaining the finished product.
The improvement of the invention also comprises a step 4 of carrying out double-layer filtration on the finished product to obtain the reflective coating with the fineness of not more than 20 mu m.
(III) advantageous effects
Compared with the prior art, the invention provides a novel reflective coating and a preparation method thereof, and the novel reflective coating has the following beneficial effects:
the novel reflective coating with the novel structure and the preparation method have good lightness and light reflectance, high temperature resistance, yellowing resistance, hardness and strong adhesive force, can still keep higher light reflectance after long-term use, and is not easy to discolor under the high-temperature condition; the reflective coating can be applied to the fields of illumination, exterior walls and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A novel reflective coating comprises the following raw materials in parts by weight:
1 part of hydroxyethyl cellulose;
15 parts of elastic acrylic emulsion;
50 parts of silicone-acrylate emulsion;
8 parts of urea-formaldehyde resin
2 parts of nano titanium dioxide;
100 parts of water;
2 parts of a dispersing agent;
0-1 part of pH regulator;
50 parts of titanium dioxide;
5 parts of a leveling agent;
5 portions of barium sulfate
Mica powder 1 part
100 parts of heavy calcium carbonate;
50 parts of acrylic emulsion;
1 part of a thickening agent;
10 parts of a film-forming assistant;
and 5 parts of pigment.
Example 2
A novel reflective coating comprises the following raw materials in parts by weight:
1.2 parts of hydroxyethyl cellulose;
18 parts of elastic acrylic emulsion;
45 parts of silicone-acrylate emulsion;
11 parts of urea-formaldehyde resin
3 parts of nano titanium dioxide;
150 parts of water;
3 parts of a dispersing agent;
0-1 part of pH regulator;
75 parts of titanium dioxide;
7 parts of a leveling agent;
10 portions of barium sulfate
Mica powder 3 parts
150 parts of heavy calcium carbonate;
150 parts of acrylic emulsion;
3 parts of a thickening agent;
15 parts of a film-forming assistant;
12 parts of pigment.
Example 3
A novel reflective coating comprises the following raw materials in parts by weight:
1.5 parts of hydroxyethyl cellulose;
20 parts of elastic acrylic emulsion;
40 parts of silicone-acrylate emulsion;
15 portions of urea-formaldehyde resin
4 parts of nano titanium dioxide;
200 parts of water;
4 parts of a dispersing agent;
0-1 part of pH regulator;
100 parts of titanium dioxide;
10 parts of a leveling agent;
15 portions of barium sulfate
5 parts of mica powder
200 parts of heavy calcium carbonate;
200 parts of acrylic emulsion;
5 parts of a thickening agent;
20 parts of a film-forming assistant;
and 20 parts of pigment.
In the 3 embodiments, the titanium dioxide is anatase titanium dioxide with the particle size of 900-1500 nm; the barium sulfate powder has the particle size of 500-800 nm.
The mass ratio of the titanium dioxide to the barium sulfate is 10: 1-4, and the dispersant is a dispersant 5040.
Of course, the above embodiments are not limited to these specific sources, and any sources that can be realized may be adopted.
By adding the elastic acrylic emulsion and the film forming additive, the color problem can be greatly solved, and the integral adhesive force is increased.
The addition of the silicone acrylic emulsion improves the antibacterial effect of the whole coating, and the coating has good flexibility and high heat reflectivity.
The urea resin is used as a synthetic resin, so that the high-temperature resistance of the whole coating is ensured, the high light reflection rate can be still kept after long-term use, and the color is not easy to change under high-temperature regulation.
The preparation method of the above 3 examples is as follows: a preparation method of a novel reflective coating is characterized by comprising the following steps:
step 1, weighing 1-1.5 parts of hydroxyethyl cellulose and 40-50 parts of silicone-acrylic emulsion, dissolving in 200 parts of 100-containing water, using 0-1 part of pH regulator, regulating the pH value to 8-9, adding 8-15 parts of urea-formaldehyde resin, 50-100 parts of titanium dioxide, 5-15 parts of barium sulfate, 1-5 parts of mica powder and a dispersing agent into a dispersion machine after the hydroxyethyl cellulose is completely dissolved, dispersing at a high speed of 800-containing 1200rpm for 8-10min, reducing the rotating speed to 300-containing 500rpm, adding 15-20 parts of elastic acrylic emulsion, and stirring for 20-40min to obtain a first mixture;
step 2, transferring the first mixture into a grinding machine, adding 100-200 parts of coarse whiting and 2-4 parts of nano titanium dioxide, grinding for 60-240 minutes, and controlling the rotating speed to be 2000-3000 r/min in the grinding process to prepare a second mixture;
step 3, adding 5-10 parts of leveling agent, 50-200 parts of acrylic emulsion, 1-5 parts of thickening agent, 10-20 parts of film-forming assistant and 5-20 parts of cold pigment into the second mixture to form a third mixture; and transferring to a dispersion machine for dispersion, wherein the rotation speed is controlled to be 2000-3000 r/min in the dispersion process, and obtaining the finished product.
And 4, performing double-layer filtration on the finished product to obtain the reflective coating with the fineness of not more than 20 microns.
With a conventional reflective film as comparative example 1, the following examples were prepared by testing the new properties of the final products of these examples, incorporating the following table:
therefore, the coating designed by the novel formula greatly exceeds the original indexes on the premise of meeting the national indexes, and achieves the expected effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The novel reflective coating is characterized by comprising the following raw materials in parts by weight:
1-1.5 parts of hydroxyethyl cellulose;
15-20 parts of elastic acrylic emulsion;
40-50 parts of silicone-acrylate emulsion;
8-15 parts of urea-formaldehyde resin
2-4 parts of nano titanium dioxide;
100 portions of water and 200 portions of water;
2-4 parts of a dispersing agent;
0-1 part of pH regulator;
50-100 parts of titanium dioxide;
5-10 parts of a leveling agent;
5-15 parts of barium sulfate
1-5 parts of mica powder
100 portions of coarse whiting and 200 portions of coarse whiting;
50-200 parts of acrylic emulsion;
1-5 parts of a thickening agent;
10-20 parts of a film-forming assistant;
5-20 parts of pigment.
2. The novel reflective coating as claimed in claim 1, wherein the titanium dioxide is anatase titanium dioxide with a particle size of 900-1500 nm; the barium sulfate powder has the particle size of 500-800 nm.
3. The novel reflective coating according to claim 1, wherein the mass ratio of the titanium dioxide to the barium sulfate is 10: 1-4.
4. The novel reflective coating of claim 1, wherein the dispersant is dispersant 5040.
5. A preparation method of a novel reflective coating is characterized by comprising the following steps:
step 1, weighing 1-1.5 parts of hydroxyethyl cellulose and 40-50 parts of silicone-acrylic emulsion, dissolving in 200 parts of 100-containing water, using 0-1 part of pH regulator, regulating the pH value to 8-9, adding 8-15 parts of urea-formaldehyde resin, 50-100 parts of titanium dioxide, 5-15 parts of barium sulfate, 1-5 parts of mica powder and a dispersing agent into a dispersion machine after the hydroxyethyl cellulose is completely dissolved, dispersing at a high speed of 800-containing 1200rpm for 8-10min, reducing the rotating speed to 300-containing 500rpm, adding 15-20 parts of elastic acrylic emulsion, and stirring for 20-40min to obtain a first mixture;
step 2, transferring the first mixture into a grinding machine, adding 100-200 parts of coarse whiting and 2-4 parts of nano titanium dioxide, grinding for 60-240 minutes, and controlling the rotating speed to be 2000-3000 r/min in the grinding process to prepare a second mixture;
step 3, adding 5-10 parts of leveling agent, 50-200 parts of acrylic emulsion, 1-5 parts of thickening agent, 10-20 parts of film-forming assistant and 5-20 parts of cold pigment into the second mixture to form a third mixture; and transferring to a dispersion machine for dispersion, wherein the rotation speed is controlled to be 2000-3000 r/min in the dispersion process, and obtaining the finished product.
6. The method for preparing a novel reflective coating according to claim 5, further comprising a step 4 of performing double-layer filtration on the finished product to obtain a reflective coating with fineness not greater than 20 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111469513.3A CN114058229A (en) | 2021-12-04 | 2021-12-04 | Novel reflective coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111469513.3A CN114058229A (en) | 2021-12-04 | 2021-12-04 | Novel reflective coating and preparation method thereof |
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| CN114058229A true CN114058229A (en) | 2022-02-18 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865352A (en) * | 2014-03-31 | 2014-06-18 | 湖州绿色建材开发有限公司 | Reflective coating material and preparation method thereof |
| CN103865344A (en) * | 2014-03-31 | 2014-06-18 | 湖州绿色建材开发有限公司 | Reflective heat-insulating coating |
| CN106833303A (en) * | 2017-01-19 | 2017-06-13 | 华南理工大学 | A kind of resistant to elevated temperatures diffusing reflection coating high and preparation method thereof and application method |
| CN108795190A (en) * | 2018-05-07 | 2018-11-13 | 合肥仁德电子科技有限公司 | A kind of wall covering that can improve Projection Display effect |
| CN112626878A (en) * | 2020-12-16 | 2021-04-09 | 深圳市光科数字科技有限公司 | Diffuse reflection environment-friendly projection curtain coating and manufacturing method thereof |
| WO2021074360A1 (en) * | 2019-10-17 | 2021-04-22 | Basf Coatings Gmbh | Nir light scattering coatings and compositions for preparing them |
-
2021
- 2021-12-04 CN CN202111469513.3A patent/CN114058229A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865352A (en) * | 2014-03-31 | 2014-06-18 | 湖州绿色建材开发有限公司 | Reflective coating material and preparation method thereof |
| CN103865344A (en) * | 2014-03-31 | 2014-06-18 | 湖州绿色建材开发有限公司 | Reflective heat-insulating coating |
| CN106833303A (en) * | 2017-01-19 | 2017-06-13 | 华南理工大学 | A kind of resistant to elevated temperatures diffusing reflection coating high and preparation method thereof and application method |
| CN108795190A (en) * | 2018-05-07 | 2018-11-13 | 合肥仁德电子科技有限公司 | A kind of wall covering that can improve Projection Display effect |
| WO2021074360A1 (en) * | 2019-10-17 | 2021-04-22 | Basf Coatings Gmbh | Nir light scattering coatings and compositions for preparing them |
| CN112626878A (en) * | 2020-12-16 | 2021-04-09 | 深圳市光科数字科技有限公司 | Diffuse reflection environment-friendly projection curtain coating and manufacturing method thereof |
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Application publication date: 20220218 |