KR101618528B1 - Cool paint composition comprising phase change materials and method for preparing the same - Google Patents
Cool paint composition comprising phase change materials and method for preparing the same Download PDFInfo
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- KR101618528B1 KR101618528B1 KR1020150139246A KR20150139246A KR101618528B1 KR 101618528 B1 KR101618528 B1 KR 101618528B1 KR 1020150139246 A KR1020150139246 A KR 1020150139246A KR 20150139246 A KR20150139246 A KR 20150139246A KR 101618528 B1 KR101618528 B1 KR 101618528B1
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- change material
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- phase change
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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
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- C09D7/125—
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- C09D7/1291—
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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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
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- Organic Chemistry (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
Description
The present invention relates to a heat shield paint composition comprising a phase change material and a method of manufacturing the same, and more particularly, to a heat shield paint composition prepared by supporting a phase change material on a macroporous material and a method of manufacturing the same.
Recently, the heat island phenomenon (Heat Island) is emerging as a big social problem due to the increase in the population and artificial facilities due to urbanization, and the greenhouse effect. In order to solve this problem in developed countries, low-carbon society is being built in earnest, and the heat-shrinking paint has been attracting attention as an energy conservation measure for large buildings.
However, the conventional heat shield paint has a problem that its color is limited mainly due to reflection by color, and the heat-shielding performance can not be sufficiently exhibited by using only the reflection effect of sunlight.
In another conventional method, ceramic particles such as silica, titania, zirconia particles and hollow spheres are mixed with paint in the form of a filler to impart a heat-shielding effect. The ceramic particles are not limited in color, There is a problem in that the physical properties and adhesion of the dried coating film are reduced.
In order to overcome the above-mentioned problems, some paints using latent heat of a phase change material have recently been developed. Such phase-change materials exhibit a heat-shielding effect by storing external heat in the form of latent heat, and microcapsules encapsulated with a polymer are widely used for its application. The microcapsules are relatively large spherical particles, and when they are mixed with paint, it is difficult to obtain a uniform coating film, and the manufacturing cost is increased due to the encapsulation process, which is uneconomical.
On the other hand, some techniques for impregnating porous particles with a phase-change material and incorporating them into a coating material have been developed. However, the porous particles used in the past have micro-sized pores and lack of storage space to impregnate a large amount of phase- . Therefore, a large amount of microporous material is required to obtain sufficient heat-shielding performance, so that it is difficult to mix with the paint, and the characteristics such as the hue and application properties of the paint are reduced even when used in combination. Also, the microporous materials used are expensive materials for application to paints such as zeolite, porous silica, and titanium dioxide.
Accordingly, there is a desperate need for research on a heat-insulating material which can be used as a simple process in a paint field, but has an excellent heat-insulating performance.
It is an object of the present invention to provide a heat shield paint composition which is inexpensive and has excellent heat shielding performance by using a macroporous material capable of supporting a large amount of phase change material.
It is another object of the present invention to provide a method for producing a heat shielding paint composition excellent in heat shielding performance.
In order to achieve the above object, the present invention can provide a differential thermal paint composition comprising a macroporous material carrying a phase change material.
The phase change material may comprise an organic material having a melting point of 20 to 60 DEG C and containing saturated hydrocarbons having 13 to 28 carbon atoms and the organic material may include paraffins, long chain alcohols, long chain fatty acids, fatty acid triglycerides, Long chain fatty acid esters, and long chain fatty acid esters.
In addition, the macroporous material may include an inorganic material having a pore size of 50 nm or more, and the inorganic material may include at least one selected from the group consisting of silicate, titanium dioxide, alumina, and silica.
In the heat shielding paint composition of the present invention, 5 to 60 parts by weight of the phase change material may be supported on 100 parts by weight of the macroporous material, and the macroporous material on which the phase change material is carried may be 100 parts by weight 1 to 30 parts by weight based on 100 parts by weight of the composition.
The method for producing the heat shield paint composition of the present invention comprises: a melting step of melting a phase change material; A supporting step of supporting the molten phase change material on a macroporous material; And a paint mixing step of mixing the macroporous material carrying the phase change material with a general paint.
In the melting step, the phase-change material can be melted at a temperature equal to or higher than the melting point.
In the carrying step, the molten phase-change material and the macroporous substance may be stirred for 30 minutes to 3 hours to support the phase-change material on the macroporous substance.
The heat shield paint composition containing the phase change material according to the present invention is distinguished from the existing heat shielding and heat insulating material and it is possible to use the latent heat of the macroporous material bearing the phase change material, It is possible to obtain an excellent heat-insulating performance as a material, and it is possible to obtain high energy efficiency because it is possible to reduce the cooling cost and efficient energy saving in summer when applied to a building.
In addition, since the heat shielding paint composition of the present invention is produced through a melting and stirring process of a phase change material, it is excellent in mass productivity and reproducibility owing to a simple manufacturing process, and a large amount of phase change material can be supported on a small amount of porous material And a method of manufacturing a heat shielding paint composition which is excellent in heat shielding effect while having little economic burden.
Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.
Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.
The present invention relates to a heat-shielding paint composition comprising a phase-change material and a method for producing the same, wherein a heat-shielding paint composition which absorbs heat of fusion to suppress temperature rise is prepared by supporting a phase- .
The heat shield paint composition according to the present invention may include a phase change material and a macroporous material.
The phase change material may include an organic material including a saturated hydrocarbon having a melting point of 20 to 60 DEG C and 13 to 28 carbon atoms, and the organic material preferably includes paraffins, long chain alcohols, long chain fatty acids, fatty acids Triglycerides, and long-chain fatty acid esters. The phase change material may be in the form of a eutectic mixture of a mineral in the hydrate form, some acid and acid.
The macroporous material may include an inorganic material having a pore size of 50 nm or more without limitation, and preferably an inorganic material having a pore size of 50 nm or more and 500 nm or less. When the pore size exceeds 500 nm, there is a problem that the phase-change material is not sufficiently collected in the pores and can flow out when mixed with the paint and applied. The inorganic material may preferably include at least one selected from the group consisting of silicate, titanium dioxide, alumina, and silica.
The phase change material may be included in an amount of 5 to 60 parts by weight, preferably 10 to 50 parts by weight, more preferably 20 to 40 parts by weight, based on 100 parts by weight of the macroporous material. When the phase-change material is less than 5 parts by weight, sufficient heat-shielding performance can not be exhibited. When the amount of the phase-change material is more than 60 parts by weight, the amount of the phase-change material exceeds the amount that can be supported on the macroporous material, Thereby causing coagulation between the macroporous particles, and forming coarse particles, aggregates and the like.
In the heat shielding paint composition of the present invention, the phase change material is supported on the macroporous substance. The macroporous material carrying the phase change material may be added in an amount of 1 to 30 parts by weight based on 100 parts by weight of the heat shield paint composition. When the amount of the macroporous material on which the phase change material is carried is less than 1 part by weight, sufficient heat shielding performance can not be exhibited. When the amount exceeds 30 parts by weight, dispersion in the paint composition becomes difficult, There is a problem that the paintability is deteriorated by deterioration.
Next, the method for preparing the heat shield paint composition according to the present invention comprises: a melting step of melting a phase change material; A supporting step of supporting the molten phase change material on a macroporous material; And a paint mixing step of mixing the macroporous material carrying the phase change material with a general paint.
The melting step is a step of melting at a temperature equal to or higher than the melting point of the phase-change material. Since the phase-change material of the present invention may include all organic materials having a melting point of 20 to 60 ° C, the phase-change material may be melted at a higher temperature in consideration of the melting point of the phase-change material to be used.
The supporting step may be a step of adding a macroporous substance to the molten phase conversion material and stirring and mixing the mixture for 30 minutes to 3 hours, preferably 1 hour to 2 hours. Through this step, a macroporous substance carrying a phase change material can be obtained. The amount of the phase-change material to be supported may be 5 to 60 parts by weight, preferably 10 to 50 parts by weight, more preferably 20 to 40 parts by weight based on 100 parts by weight of the macroporous material. When the amount of the phase-change material is less than 5 parts by weight, sufficient heat-shielding performance can not be exhibited. When the amount of the phase-change material is more than 60 parts by weight, the amount of the macroporous substance So that the macroporous particles are agglomerated to form coarse particles or aggregates. The macroporous material may include, without limitation, an inorganic material having a pore size of 50 nm or more, and the inorganic material may preferably include at least one selected from the group consisting of silicate, titanium dioxide, alumina, and silica have.
The paint mixing step may be a mixing step of mixing the macroporous material carrying the phase change material with the general paint. The general paint may be used without limitation, and the mixing method is not limited can do. The macroporous material carrying the phase change material may be added in an amount of 1 to 30 parts by weight based on 100 parts by weight of the heat shielding paint composition. When the amount of the macroporous material is less than 1 part by weight, sufficient heat shielding performance can not be exhibited. When the amount is more than 30 parts by weight, there is a problem that dispersion in the paint composition becomes difficult, viscosity of the paint composition increases, and paintability deteriorates due to deterioration of fluidity.
The heat shield paint composition prepared by the method of the present invention has excellent mass productivity and reproducibility due to a simple manufacturing process. When the heat shield paint is applied to an outer wall or a roof of a building, Absorbing and suppressing the rise of the temperature, there is an advantage that an excellent heat-shielding performance can be exhibited even with a small amount of macroporous material.
Hereinafter, the present invention will be described in detail with reference to the following examples, which should not be construed as limiting the scope of protection defined by the appended claims.
Example One
9 g of lauric acid (melting point: 44 to 46 占 폚) was dissolved for 10 minutes at a temperature of 50 占 폚, and then 30 g of macroporous silica (pore size: 100 nm or more) was added and stirred for 1 hour. After stirring, the remaining lauric acid was removed by using an absorbent paper. Macro-porous silica on which lauric acid was impregnated was mixed with 10 parts by weight of white water-based paint to 100 parts by weight of the total paint composition to prepare heat-sensitive paint.
Example 2
Except that macroporous alumina (pore size: 50 to 75 nm) was added in place of the macroporous silica to prepare macroporous alumina bearing lauric acid and a heat-shrinkable paint.
Comparative Example One
Zeolite (pore size: 2 nm or less) was added instead of the macroporous silica to prepare lauric acid-supported zeolite and heat-shrinkable paint.
Comparative Example 2
Lauric acid (melting point: 44 to 46 ° C) and macroporous silica (pore size: 100 nm or more) were directly mixed with white water-based paint in the same amount as used in Examples 1 to 2 and Comparative Example 1, .
The paint samples prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were irradiated with light and the temperature of the sample surface was measured. The results of the measurement are shown in Table 1 below.
Pore size
Surface temperature
(° C)
One
Silica + water-based paint
2
Alumina + water-based paint
One
+ Water paint
2
Silica + water-based paint
A sample coated with the heat shield paint prepared in Examples 1 and 2 and Comparative Examples 1 and 2 was prepared and irradiated with light to observe the temperature change of the surface of the coated sample. Each of these samples was irradiated with light through an infrared light source, and the surface temperature was measured after about 2 hours. The measurement results are as shown in Table 1 above.
In the case of Examples 1 and 2, the surface temperature of the sample was 50 ° C and 52 ° C, respectively, which showed a heat shielding effect of about 6 to 8 ° C as compared with Comparative Example 1. Therefore, the macroporous It was confirmed that the material was easy to support the phase change material, and the heat shielding effect was excellent. In addition, Example 1 showed a surface temperature of 2 ° C lower than that of Example 2 using the same macroporous material. As the pore size of the macroporous material increases, the amount of phase-change material supported increases, It is confirmed that it is excellent.
In the case of Comparative Example 2, a paint specimen was prepared by simply mixing the phase-change material with a water-based paint without separately carrying the step of supporting the phase-change material on the porous material. However, since phase-change materials exhibit hydrophobicity, they are difficult to mix with water-based paint, so that it is difficult to prepare a sample. In the evaluation of the heat-insulating performance, phase-change materials are melted and flowed to the sample surface as temperature rises The evaluation of the heat value could not be done properly. Therefore, it was confirmed that the supporting step of the present invention is indispensable for applying the phase change material to the paint as a heat shielding material.
As described above, it has been confirmed that the heat-shielding paint containing the macroporous material carrying the phase-change material of the present invention exhibits a better heat-shielding effect by increasing the supporting ability of the phase-change material than the conventional microporous material.
Claims (10)
Wherein the macroporous material comprises an inorganic material having a pore size of 100 to 500 nm,
Wherein the macroporous material carrying the phase change material is contained in an amount of 1 to 30 parts by weight based on 100 parts by weight of the heat shield paint composition.
Wherein the phase change material comprises an organic material having a melting point of from 20 to 60 DEG C and a saturated hydrocarbon having from 13 to 28 carbon atoms.
Wherein the organic material comprises at least one selected from the group consisting of paraffins, long chain alcohols, long chain fatty acids, fatty acid triglycerides, and long chain fatty acid esters.
Wherein the inorganic material comprises at least one selected from the group consisting of silicates, titanium dioxide, alumina, and silica.
Wherein the amount of the phase-change material supported is 5 to 60 parts by weight based on 100 parts by weight of the macroporous material.
Supporting the molten phase-change material on a macroporous material containing an inorganic material having a pore size of 100 to 500 nm; And
And a paint mixing step of mixing the macroporous material carrying the phase change material with a general paint.
Wherein the melting step melts the phase change material at a temperature equal to or higher than the melting point.
Wherein the supporting step comprises mixing the molten phase-change material and the macroporous material with stirring for 30 minutes to 3 hours, thereby supporting the phase-change material on the macroporous material.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020150139246A KR101618528B1 (en) | 2015-10-02 | 2015-10-02 | Cool paint composition comprising phase change materials and method for preparing the same |
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| KR1020150139246A KR101618528B1 (en) | 2015-10-02 | 2015-10-02 | Cool paint composition comprising phase change materials and method for preparing the same |
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| KR101618528B1 true KR101618528B1 (en) | 2016-05-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101765221B1 (en) * | 2016-10-24 | 2017-08-04 | (주)계림건축사사무소 | Hypocaust system |
| KR102338939B1 (en) | 2021-07-13 | 2021-12-10 | 이종춘 | Paint with excellent thermal insulation performance and thermal shock resistance, and manufacturing method |
| CN115261085A (en) * | 2022-08-01 | 2022-11-01 | 北京中冶和坤天冕工程技术有限公司 | Coke oven gas purification method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100481282B1 (en) | 2002-04-30 | 2005-04-07 | 주식회사 에네트 | Paint Composition Using a Phase Change Material |
| JP2011225705A (en) * | 2010-04-19 | 2011-11-10 | Asahi Komatsu Kk | Thermal conversion composition, method for producing thermal conversion composition, and method for forming coating film of thermal conversion composition |
| JP2013082596A (en) * | 2011-10-12 | 2013-05-09 | Kawaken Fine Chem Co Ltd | Alumina multilayer porous body and method for producing the same |
-
2015
- 2015-10-02 KR KR1020150139246A patent/KR101618528B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100481282B1 (en) | 2002-04-30 | 2005-04-07 | 주식회사 에네트 | Paint Composition Using a Phase Change Material |
| JP2011225705A (en) * | 2010-04-19 | 2011-11-10 | Asahi Komatsu Kk | Thermal conversion composition, method for producing thermal conversion composition, and method for forming coating film of thermal conversion composition |
| JP2013082596A (en) * | 2011-10-12 | 2013-05-09 | Kawaken Fine Chem Co Ltd | Alumina multilayer porous body and method for producing the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101765221B1 (en) * | 2016-10-24 | 2017-08-04 | (주)계림건축사사무소 | Hypocaust system |
| KR102338939B1 (en) | 2021-07-13 | 2021-12-10 | 이종춘 | Paint with excellent thermal insulation performance and thermal shock resistance, and manufacturing method |
| CN115261085A (en) * | 2022-08-01 | 2022-11-01 | 北京中冶和坤天冕工程技术有限公司 | Coke oven gas purification method |
| CN115261085B (en) * | 2022-08-01 | 2023-09-01 | 北京中冶和坤天冕工程技术有限公司 | Coke oven gas purifying method |
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