KR20150136445A - Using a floating bead arrays using hydrophobic and hydrophilic coating compositions reflected in pollution - Google Patents
Using a floating bead arrays using hydrophobic and hydrophilic coating compositions reflected in pollution Download PDFInfo
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- KR20150136445A KR20150136445A KR1020150039139A KR20150039139A KR20150136445A KR 20150136445 A KR20150136445 A KR 20150136445A KR 1020150039139 A KR1020150039139 A KR 1020150039139A KR 20150039139 A KR20150039139 A KR 20150039139A KR 20150136445 A KR20150136445 A KR 20150136445A
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- hydrophilic
- hydrophobic
- binder
- beads
- light
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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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
- C09D5/16—Antifouling paints; Underwater paints
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- C09D7/12—
Abstract
The present invention relates to a high-reflection coating material, and more particularly, to a coating material for a reflective coating material which floats beads on the surface of a coating surface to expose beads and a reflective pigment to the surface of the coating material, thereby increasing scattering of light, The present invention relates to an antifouling reflective coating composition using a suspension of beads and a hydrophobic and hydrophilic arrangement so as to effectively reflect light when using the composition.
Description
More specifically, the present invention relates to a high reflection coating composition, and more particularly, to a coating composition for coating a ceramic bead on a surface of a coating surface to expose a bead and a reflective pigment on a surface of the coating to increase scattering of light, And a hydrophobic and hydrophilic arrangement. The present invention relates to an antifouling reflective coating composition using a suspension of a bead and a hydrophobic and hydrophilic arrangement.
Generally, in the field of construction and painting, contamination of the surface of exterior materials and outdoor structures due to environmental pollution becomes a problem.
Dust and particles suspended in the atmosphere accumulate on the roof and exterior of the building on a clear day. Its sediments flow down by rainwater along the rainfall and flow down the exterior of the building.
Also, the dust floating in the air is carried to the rain, and the rain carrying the dust flows down the surface of the exterior of the building and the surface of the outdoor structure. As a result, contaminants adhere to the surface along the path of the rainwater. When such a surface is dried, there is a problem that the surface is stained-like contamination.
In addition, the inner wall of the tunnel of the road on which the vehicle travels accumulates soot and dust caused by the exhaust gas of the vehicle, thereby contaminating the wall surface.
The wall of the contaminated tunnel has a problem in that even if the illuminating lamp is illuminated around the tunnel, the brightness is lowered and the brightness of the inside of the tunnel is lowered to interfere with the operation.
In recent years, beads have been used as cutting-edge raw materials to which various technologies are applied. Beads are made of organic materials such as ceramics and polymers.
The shape of the bead is generally determined by the material constituting the bead, and the application is determined by physical properties and properties of the surface of the ceramic bead.
Particularly, in the case of hollow beads, the heat insulation performance by the thin wall construction can appropriately block the heat flow, and many developers have developed a good heat insulation paint using the heat insulation material. Also, the beads in the paint are used as the light diffusion medium for the light diffusion paint when the inner space is empty and the material having the very low specific gravity is used for the heat insulation.
In the case of light diffusing paints, light scattering is applied to the lane paints of roads and the like by utilizing the light reflection characteristic of the beads protruded from the surface of the paint. On the other hand, in the case of the pollution-resistant paint, the inorganic binder which is determined by the binder constituting the film of the paint and most of which uses the polymer or silica sol has a superhydrophilic property or a hydrophobic property, .
In the case of foreign countries, there is a disadvantage that the contaminated paint is commercially available with such hydrophilicity and hydrophobic property but it has to be shortened periodically or periodically to prevent pollution, and there is no technology satisfying both functions. However, recent energy savings in construction require such functional paints.
The methacrylate resin for producing the road marking of the prior art is disclosed in Patent Document No. 10-2009-0052862 (published on May 5, 2009) (hereinafter referred to as "
In the
As another
(A) is dispersed in 100 parts by mass of the hydrophobic polymer (B), and the number average particle diameter of the hydrophilic particles (A) is 50 nm or less. On the other hand, the hydrophilic particles Wherein the surface of the antifouling coating film has a surface roughness a of 50 nm or less at a reference length of 500 nm. The present invention relates to a structure of an antifouling coating film having a surface roughness of 50 nm or less at a reference length of 500 nm. And there is a limit to coping with the problem of not adhering to the attachment of the substance.
That is, the coating film must have the outermost surface layer b1 which is to be substantially made from the hydrophobic polymer B on the outermost layer on the free surface side. In this case, the average thickness of the outermost surface layer b1 should be 50 nm or less. Therefore, although the outermost surface layer (b1) has a thin average thickness of 30 nm or less, the effect of hydrophilic particles can be obtained. However, in order to uniformly coat the surface layer, particularly the surface layer coated on the road, with a thickness of 30 nm or less, There is a problem that is practically impossible in the coating method of Hata Road.
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,
Unlike existing paints, it provides a paint composition that obtains scattering effect by reflection of light due to change of reflectance due to pollution and light reflection due to bead float, thereby improving resistance to pollution and scattering light, The present invention provides a coating composition comprising
In addition, as the brightness inside the tunnel is sufficiently developed, the entire interior of the tunnel including the ceiling and the inner wall of the polluted refractory paint composition tunnel that meets the tunnel lighting standard is painted, so that the interior of the tunnel is illuminated with the same illumination, The flicker which is a resistance of light which interferes with the driver is not generated and the construction cost per unit area is less than half compared with the construction of the tile so that the overall internal processing cost of the tunnel is greatly reduced, The present invention relates to an antifouling reflective coating composition using a suspension of beads for the purpose of ensuring resistance to contamination from contamination and hydrophobic and hydrophilic arrangement.
In order to solve the above-mentioned object, the antifouling reflective coating composition using beads floating and hydrophobic and hydrophilic arrangement comprises 12 to 25 wt% of beads, 71.5 to 84 wt% of binder, 0.2 wt% of thickener, 0.2% by weight of a leveling agent, and 3.1 to 3.6% by weight of a light diffusing material.
The beads of the antifouling reflective coating composition using the suspension of the beads and having a hydrophobic and hydrophilic arrangement have a density of 0.9 to 1.1 g / cm 3 , a particle size of 10 to 800 μm and a resistance to compressive force of 10 Mpa or more.
The beads of the antifouling reflective coating composition using the suspension of the beads and using hydrophobic and hydrophilic arrangements are characterized in that they are made of an organic material made of inorganic or polymer glass which can reflect light well.
The beads of the antifouling reflective coating composition using the suspension of the beads and using a hydrophobic and hydrophilic arrangement have a refractive index of 1.5.
Wherein the bonding agent of the silicone resin is composed of any one of fluorine resin, polypropylene, polyethylene, modified acrylate, and silicone.
The beads of the antifouling reflective coating composition using the suspension of the beads and using a hydrophobic and hydrophilic arrangement are characterized by ceramic beads having an apparent specific gravity of 0.2 to 0.8.
The binder of the antifouling reflective paint composition using the suspension of the beads and using a hydrophobic and hydrophilic arrangement is characterized in that when the light diffusing reflective material of the hydrophilic bead is used the binding material is made hydrophobic and conversely when a hydrophobic light diffusing reflective material is used, Of a bonding material.
The present invention provides a composition for a light diffusion coating having excellent stain resistance including a light diffusion agent using a hydrophilic ceramic bead and a hydrophilic binder as a binder for obtaining a light diffusing reflection effect, Density, shape, arrangement of paints, and the like, thereby increasing the scattering of light.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a paint which is light diffused by protruded beads of the present invention. FIG.
2 is a diagram illustrating an example of a bed arrangement of the present invention.
Hereinafter, embodiments of the present invention will be described in detail.
The selected ceramic beads for producing the coating composition used in the present invention should have an apparent specific gravity of 0.2 to 0.8 for light scattering.
If the specific gravity is greater than 0.8, the light scattering effect deteriorates because the bead does not easily float on the upper part of the paint. If the specific gravity is less than 0.2, the wall of the floating bead is too thin, do.
In addition, pearlescent pigments, fluorescent pigments and titanium dioxide white pigments can be used to improve the light diffusion effect. Although many materials have been developed for stain resistance, the present invention is made up of properties contrary to those for light diffusion.
That is, when a light diffusing reflective material such as a hydrophilic bead is used, the bonding material is composed of a hydrophobic material and conversely, when a hydrophobic light diffusing reflecting material is used, it is composed of a hydrophilic bonding material.
However, it is preferable that the hydrophilic and hydrophobic arrangements are alternately structured as shown in FIG. 1, and the smaller the array size of the hydrophilic and hydrophobic groups, the better the effect of preventing contamination. However, Effect.
The light diffusing reflection effect diffuses by the reflection of metal such as aluminum in the light reflection efficiency, but the scattering of light is diffused by dispersing the incident light by different refractive indexes. According to the experiment of the present invention, however, And that high visibility is ensured when Therefore, it is preferable that the reflector and the diffuser, from which the light is incident, are exposed to 1 to 70% of the diameter or the volume regardless of the size thereof.
More preferably, it is 5 to 50%. If it is smaller than 5%, the light diffusing reflection effect is deteriorated. If it is larger than 50%, it may easily deviate from the coating film and the diffusion effect may be deteriorated. However, this diffuse reflection is closely related to contamination and when the diffuse reflector is hydrophobic or hydrophilic, the bonding material has the opposite characteristic, that is, when the diffuse reflector is hydrophilic, the bonding material is hydrophobic. When the diffuse reflector is hydrophobic, .
Hereinafter, the present invention will be described in detail with reference to Examples. However, the present invention is not intended to limit the scope of the present invention, And the scope of the claims of the present invention.
The bead used in the present invention is not specifically defined in terms of its physical constitution, but may be composed of an inorganic material such as glass capable of reflecting light well, and an organic material such as a polymer. However, the refractive index should be at least above the level used in domestic lane coatings and should be at least 1.5.
The refractive index is a reflection of light to an external light source, and therefore, the retroreflectivity is very important for securing visibility for a lane paint or the like. In order to secure such visibility, a high-performance reflective bead surrounding the center bead of the high-reflectance glass bead is used. However, since the retroreflectivity does not deteriorate due to rain in the lane other than the lane according to the present invention, When the use of light such as an underground parking lot of a house is applied to a small wall as in the invention, the diffusion of light due to the protrusion of the bead due to the floating of the reflector is important.
In addition, the reflection of light to the light source is considerably reduced due to contamination. Therefore, it is necessary to take countermeasures against it. It is difficult to clean the wall in domestic conditions. In order to maintain the reflection of light, to be.
In general, fluorine resin, polypropylene, polyethylene, denatured acrylate, silicone resin and the like can be used as the bonding material of stain resistance. However, in the present invention, To form a structure that can be used.
Paints are generally painted using rollers, brushes, spatulas, sprayers, etc. It is common to apply functionalities twice during painting, and a solid resin layer is used in one painting and a functional material is painted in the second painting This maximizes performance and requires considerable cost, and it often takes a long time to cure and dry the first coating material during maintenance, which is not economical. In order to compensate for these disadvantages in the present invention, it has been found that when the resin is hardened by using the density difference between the resin and the light reflector, it is possible to secure a very satisfactory light diffusion and stain resistance.
Of course, the viscosity and specific gravity of the binder and the specific gravity of the reflector should be considered for this invention. In particular, the curing time and the pot life of the binding material are important factors for examining the relationship with the time required for the reflector to rise.
However, it is necessary to confirm the close relation between the exposure level of the optimized reflector and the exposed area of the wall. However, the first thing to consider is that both the reflector and the binder should not be easily contaminated.
Considering this point, Stokes-type ascending velocity = gravitational acceleration (particle density - liquid density) x (particle diameter) 2 / (18 x viscosity of liquid x particle diameter) Respectively. In this case, the density of the binder in the liquid is 0.9 to 1.1 g / cm 3 as a general bonding material, and usually 1.1 or less when no inorganic substance is present.
However, when an inorganic binding material such as silica sol or alumina sol is used, it may be 1.2 to 1.4 or more. However, in the case of silica sol or alumina sol, the thickness of the coating film is too small to attach the reflector.
However, it may be possible to manufacture beads and sol in a slurry state. Here, it is desirable to consider that the diffusion of light is exposed to the surface due to the polarity difference between hydrophilicity and hydrophobicity, rather than considering the rise due to suspension.
The present invention is characterized by comprising 12 to 25 wt% of beads having an apparent specific gravity of 0.2 to 0.8, 71 to 84 wt% of a binder, 0.2 wt% of a thickener, 0.2 wt% of an alcohol type leveling agent and 3.1 to 3.6 wt%
The beads have a density of 0.6 to 0.9 g / cm 3 , a particle size of 10 to 800 μm, a resistance to compressive force of 10 Mpa or more, a refractive index of 1.5, and a density of 0.9 to 1.1 g / cm 3 , The bead density is smaller than that of the binder forming the liquid so as to be exposed to the surface within one hour in consideration of the initial film formation time of the binder which is a liquid.
In the present invention, the bead density is 0.6 to 0.9 g / cm 3 , and the bead particle size is 10 to 800 μm. At this time, the resistance to compressive force should be more than 10Mpa to withstand external force during washing.
Also, considering the initial film formation time of the liquid, the density of the beads should be 0.6 ~ 0.9 g / cm < 3 >, and should be a density value smaller than that of the liquid material. Also, in order for the beads to be exposed on the surface, it is desirable that the polarity with the binder is completely opposite.
The light diffusing materials such as pearlescent pigments to be used at this time may be selected so as to be well mixed with the binding material. In addition, predetermined additives such as antifoaming agent, dispersant, leveling agent, and pigment for forming the coating should not adversely affect the anti-condensation coating material.
Table 1 below shows compositions and mixing ratios of the three kinds of Examples and Comparative Examples of the present invention.
Table 2 shows the volume ratios of beads and binder according to the examples.
Here, the beads of the example according to the following Table 3 were those having a breaking strength of 20 Mpa, a density of 0.6 g / cc, and a particle diameter of about 600 mu m. In the case of Example 1, silicone resin was used as the binder. Respectively. Ethylcellulose of US D was used as the thickening agent and alcohol type of US D was used as the leveling agent. The light diffusing material was a light diffusing agent of US R Company.
On the other hand, the comparative example is compared with the reflection paint (comparative 1) of domestic S company among the high brightness reflective paint currently available in the domestic market. For the comparison, the reflectance after drying was compared by the flash photo. For the test, the surface of the aluminum plate with a width of 10 cm and a thickness of 0.1 cm was coated once with each thickness of Table 3, Dried in a dryer and photographed using a flash and compared.
As can be seen in Table 3, when using a flash, pictures 1, 2, and 3 were identified as the same white, but lighter than the comparative example, whereas the comparative example was relatively darker. It can be seen that the surroundings can be confirmed by reflecting the light well in the presence of the light source.
Table 3 shows the nighttime light reflection photographs using the change in contact angle (°) of the paint after the outdoor exposure and the flashes before and after the outdoor exposure.
Table 4 shows the results of measurement of the light reflectance of the coated surface in which the performance of the stain resistance of Example 1, Example 2, Example 3 and Comparative Example 1 was evaluated. The specimens were painted twice on a 10 × 20 × 0.1 cm aluminum plate, dried at 105 ° C. for 24 hours, and left at room temperature for more than 24 hours. The specimens were exposed to light and perpendicular to the road surface. And the contact angle of the contaminated specimen was measured 6 months later and 1 year later, and the stain resistance was evaluated by comparing with the initial contact angle.
Measurement of the contact angle after 12-month exposure under the outdoor exposure condition In the comparative example, the hydrophilic contact angle was maintained at 106 in 119 in Example 1, 120 to 97 in Example 2, and 113 to 96 in Example 3 However, in Comparative Example 1, from 108 to 67, the hydrophobicity was changed from hydrophobic to hydrophilic, and the surface energy change due to the contamination was evaluated to be large. Thus, in Example 1, Example 2, and Example 3, .
Also, in the case of confirming the light reflectance after one year of each specimen, there is not much change in the case of the embodiment, but in the case of the comparative example, the light is not reflected well.
FIG. 1 is a schematic view of a paint which is light-diffused by projected beads of the present invention, and FIG. 2 is a view showing an example of the arrangement arrangement of a bed of the present invention.
As described above, the present invention relates to a composition of an antifouling paint composition containing a hollow ceramic bead, a pearl pigment, or the like as a light diffusing material and a suspension of hydrophilic hollow ceramic beads based on a silicon lame as a binding material Unless defined otherwise, all technical terms used in the present invention have the following definitions and are consistent with the meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
Also, preferred methods or samples are described in this specification, but similar or equivalent ones are also included in the scope of the present invention. The contents of all publications referred to herein are incorporated herein by reference.
1: hydrophilic arrangement
2: Decimal array
Claims (3)
The beads have a density of 0.6 to 0.9 g / cm 3 , a particle size of 10 to 800 μm, a resistance to compressive force of 10 Mpa or more, a refractive index of 1.5, and a density of 0.9 to 1.1 g / cm 3 , Wherein the bead density is smaller than that of the binder forming the liquid so that it is exposed to the surface within one hour in consideration of the initial film formation time of the binder, which is a liquid, using the suspension of the bead and the hydrophobic and hydrophilic arrangement Gt;
Wherein the binder comprises one of fluorine resin, polypropylene, polyethylene, modified acrylate, and silicone resin, and using hydrophilic and hydrophilic arrangement.
Characterized in that the binder is composed of a hydrophilic binder material when the light diffusing reflective material of the hydrophilic bead is used and the binding material is constituted of a hydrophobic material and, on the contrary, when a hydrophobic light diffusing reflecting material is used, A contaminated reflective coating composition using a hydrophilic arrangement.
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| KR20140063908 | 2014-05-27 | ||
| KR1020140063908 | 2014-05-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102533612B1 (en) * | 2022-06-03 | 2023-05-18 | 영림화학주식회사 | Anti-scattering composition having core-shell structure capable of realizing color |
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| JP2001081408A (en) * | 1999-09-10 | 2001-03-27 | Nippon Paint Co Ltd | Method of forming brilliant coat and automobile wheel |
| JP2005154520A (en) * | 2003-11-21 | 2005-06-16 | Daikin Ind Ltd | Nonadherent surface structure |
| JP3980032B2 (en) * | 2004-10-26 | 2007-09-19 | エスケー化研株式会社 | Decorative coating materials and decorative building materials |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102533612B1 (en) * | 2022-06-03 | 2023-05-18 | 영림화학주식회사 | Anti-scattering composition having core-shell structure capable of realizing color |
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