JP2013007015A - Inorganic heat-insulating coating material or inorganic heat-insulating coating film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inorganic heat-insulating coating material or inorganic heat-insulating coating film with excellent heat insulating property and heat shielding property.SOLUTION: Heat insulating effect is given to an inorganic coating material formed by adding, as additive components, one or two or more inorganic particles or powders selected from Ca(OH)2 (lime hydrate), CaO (calcined lime), CaCO3 (potassium carbonate), SiO2 (silicon dioxide), CaSiO3 (calcium silicate), TiO2 (titanium dioxide), MgO (magnesium oxide), pigment and colored pigment, which are inorganic materials, in an amount of 90% or more. As a heat-insulating component, one or two or more selected from CaCO3 (potassium carbonate) and ceramic, fly ash, and glass hollow or vacuum beads of 10-100 μm are added in an amount of 3-40% by volume ratio.

Description

  The present invention relates to an inorganic heat insulating paint used for coating a wall surface of a structure such as a building or various devices, or an external or internal surface, or a coating film using the inorganic paint. In addition, an inorganic water-based paint is used, and the molecular formulas Ca (OH) 2 (slaked lime), CaO (quick lime), CaCO3 (calcium carbonate), SiO2 (silicon dioxide), CaSiO3 (calcium silicate), TiO2 (titanium dioxide), It is related with the coating film formed from having apply | coated the inorganic coating material containing MgO (magnesium oxide) having high heat insulation. Furthermore, it is higher by adding one or more ceramic-type, fly ash-type, glass-type hollow (also called balloon), vacuum beads (aluminosilicate soda glass) that exhibit heat-shielding and heat-insulating effects to the inorganic paint. The present invention relates to an inorganic heat insulating paint or a coating film using the corresponding inorganic material, which can easily obtain a heat shielding and heat insulating effect.

  Conventionally, a technology in which a coating formed by applying a coating containing ceramic, fly ash, glass hollow, vacuum beads (aluminosilicate soda glass) on the surface of the structure exerts heat insulation and heat insulation is known. ing. It is also known that a coating formed by applying an inorganic coating on the surface of a structure exhibits a certain heat shielding and heat insulating effect. However, it is also known that for example organic paints containing ceramic hollow beads as a heat insulating component have a relatively short period of time when the coating is formed due to the organic nature of the binder and the anti-UV performance is weak. Yes.

  Organic paints such as hollow ceramics and acrylic emulsion paints containing vacuum beads (or various types such as silicon and urethane), and generally surface coatings such as walls, ceilings, roofs or iron parts of buildings It is used for coating.

  The heat insulation effect of the organic paint containing hollow and vacuum beads such as the above ceramic system uses the light reflection effect of white beads or light color, and the heat insulation effect is low heat conduction of the bead layer formed on the coating surface. The effect is obtained depending on the rate.

  The ceramic-containing hollow beads contained in the above are powdery products having a size of 10 μm to 100 μm, to which spacecraft thermal insulation technology is applied.

  The following patent documents etc. exist as a paint or a coating film using this technique.

JP 2002-105358 A JP 2004-10903 A Japanese Patent Laid-Open No. 11-80599 JP 2002-186896 A

  In the present invention, the molecular components Ca (OH) 2 (slaked lime), CaO (quick lime), CaCO3 (calcium carbonate), SiO2 (silicon dioxide), CaSiO3 (calcium silicate), TiO2 (titanium dioxide), MgO (oxidation) Magnesium), containing one or more pigments or colored pigments in an amount of 90% or more, or adding them to form an inorganic paint with heat insulation. Furthermore, the present invention provides an inorganic heat insulating paint or an inorganic heat insulating coating film that can enhance the heat insulating and heat insulating performance by adding a heat insulating component to the formed inorganic paint. In the present invention, one or a plurality of combinations selected from the composition formula CaSiO3 (calcium silicate), ceramic, fly ash, glass hollow, and vacuum beads are used as the heat insulating component.

  The paints and coatings made by adding hollow beads described in the above-mentioned prior patent documents 1 to 4 to paints rely on reflecting sunlight as a heat shielding effect. Moreover, the heat insulation effect is acquired using the low heat conductivity which the bead layer formed in the film has.

  The reflection of sunlight described above is effective when the color of the coating is white or light, but the reflectance decreases when the coating is darkened or overcoated with another finish. If the heat insulation effect is reduced by half, the resin temperature becomes higher, and the heat insulation effect by the hollow bead layer almost does not function.

  The object of the present invention is not only specialized in reflection that exhibits a heat-shielding effect, but paying attention to the fact that the compositional formula CaCO3 (calcium carbonate) has high heat insulation properties, and using inorganic water-based paints, 90% or more inorganic One or more selected from a highly heat-insulating inorganic coating composed of particles or powders of the above, and further, as a heat insulating component, compositional formula CaSiO3 (calcium silicate), ceramic, fly ash, glass-based hollow, vacuum beads An object of the present invention is to provide an inorganic heat insulating paint or an inorganic heat insulating coating film that exhibits a stronger heat insulating performance than a combination of or containing the above. By doing so, it is possible to freely select a surface finish such as a dark paint or a recoating of a coating film which obstructs the reflection effect in the prior art described in the prior patent documents 1 to 4, and is equivalent to the above prior art It has become possible to provide an inorganic heat insulating paint or an inorganic coating film that exhibits a heat insulating effect of or higher than that.

  The present invention for solving the above-mentioned problems is primarily based on inorganic Ca (OH) 2 (slaked lime), CaO (quick lime), CaCO3 (calcium carbonate), SiO2 (silicon dioxide), and CaSiO3 (silicic acid) as additive components of the paint. Calcium), TiO2 (titanium dioxide), MgO, one or a combination of powders or particles consisting of a combination of more than 90% of the added amount or added, it has a heat insulation effect It is characterized by forming an inorganic paint.

  The present invention for solving the above-mentioned problems is secondly the inorganic paint produced as described above is further selected from among the composition formula CaCO3 (calcium carbonate), ceramic system, fly ash system, glass-based hollow, and vacuum beads as a heat insulating component. One or more selected combinations are used.

  The present invention for solving the above-mentioned problem is thirdly one or more selected from the composition formula CaCO3 (calcium carbonate), 10 to 100 μm ceramic system, fly ash system, glass-based hollow, and vacuum beads. The combination is a heat-insulating component, and the addition amount is 3 to 40% by volume with respect to the total addition component of the inorganic coating material composed of inorganic particles or powder, or is added.

  First, in particular, the inorganic coating material of the present invention has one or more combinations selected from the composition formula CaCO3 (calcium carbonate), ceramic type, fly ash type, glass type hollow, vacuum bead excellent in heat insulation. Since the effect of further heat insulation can be sufficiently exerted by adding, even if other paints are overcoated on the coating film, even if the heat shielding effect is disturbed by dark colors, the thickness is 0.5 mm to 30 mm It was possible to form a coating film having a strong heat insulating effect.

  Secondly, the paint used in the present invention includes Ca (OH) 2 (slaked lime), CaO (quick lime), CaCO3 (calcium carbonate), SiO2 (silicon dioxide), CaSiO3 (calcium silicate), TiO2 (additional components). Titanium dioxide), MgO powder or particles have inorganic properties, and paints made from one or a combination selected from among them also become inorganic paints with heat insulation and non-flammability characteristics. As a result, the coating film formed also exhibits a heat insulating effect. The composition formula CaCO3 (calcium carbonate) with excellent heat insulation, ceramic hollow, and vacuum beads were further added, so that it became possible to form a heat-insulating and strong inorganic coating film with a synergistic effect of heat insulation. .

  Thirdly, the paint used in the present invention uses a water-based inorganic binder with plasticity, and all the added components are mainly inorganic, so the period of time that the performance as an inorganic paint is exhibited is long, and anti-ultraviolet rays, durability, nonflammability It has the unique characteristic of being an inorganic paint and is friendly to people and the environment.

  Fourthly, the inorganic paint used in the present invention has a long period of effect as a paint, and the use of the above-described compositional formula CaCO3 (calcium carbonate) and ceramic-based hollow or vacuum beads that are excellent in heat insulation effect. It has become possible to extend the period of use of a building or various devices by forming a coating film having strong heat insulation on the surface of the building or various devices.

  The coating material of the present invention contains inorganic Ca (OH) 2 (slaked lime), CaO (quick lime), CaCO3 (calcium carbonate), SiO2 (silicon dioxide), CaSiO3 (calcium silicate), TiO2 (titanium dioxide) as additive components. One or a plurality of combinations selected from MgO (magnesium oxide) are used to obtain an inorganic material by using 90% or more.

  The inorganic coating material of the present invention has one or more selected from the composition formula CaCO3 (calcium carbonate), ceramic type, fly ash type, glass type hollow, vacuum bead excellent in heat insulating property as a heat insulating component. Use a combination. The produced inorganic coating material is characterized in that the inorganic coating film formed by application exhibits a heat insulating effect. The addition amount of the selected heat insulating component is 3 to 40% in volume ratio with respect to the total additive component in the particulate or powder form of the paint, so that it is smooth and uniform inorganic heat insulating paint or inorganic heat insulating coating film Can be obtained.

  The above-mentioned inorganic heat insulating paint of the present invention has a coating film formed by coating and an inorganic constitution having excellent heat insulating properties.

  The inorganic heat insulating paint of the present invention becomes a creamy water-based inorganic heat insulating paint having plasticity by using a water-based inorganic binder. For example, it is applied to the wall surface of a building, and when the water evaporates, the condensation reaction proceeds. An inorganic heat-insulating coating film having high heat insulating properties or an amorphous film is formed, and a part of the film is not mechanically eroded and peeled off from an inorganic base material such as concrete.

  In the production of the cream-like water-based inorganic heat insulating paint in the present invention, most of the additive components are commercially available, and the blending itself is easy.

  The inorganic heat-insulating paint of the present invention can form an inorganic heat-insulating coating more easily by applying the application method by selecting roller coating, brush coating, trowel coating or the like on the object to be coated.

  Examples of experiments for expressing the performance of the inorganic paint or inorganic coating film of the present invention are shown below. Regarding preparation of the equipment in this example, first, five square white tiles having a uniform thickness of 1 cm and a side length of 15 cm are prepared and placed as samples in this experiment. For example, a white plastic-like water-based inorganic inorganic paint that has been used in the past is also prepared, and two inorganic paints, each of which is divided into two white and yellow ceramic hollow beads that are baked in a volume ratio of 10%. Add soresole to the inside and add water appropriately and knead well, and then make a white or yellow inorganic heat insulating paint in two types. Further, a composition formula CaCO3 (calcium carbonate) is added to a white plastic-like cream-like aqueous inorganic coating material at a volume ratio of 20%, and water is appropriately added and kneaded sufficiently.

  Regarding sample preparation of the example of the present invention, first, the first piece of the sample tile is called A and is left as it is. Secondly, the second piece of the sample tile is called B, and a white cream-like aqueous inorganic paint having plasticity on the surface is applied twice to finish the coating film with a thickness of 2 mm in white. Thirdly, the third tile of the tile is called C, and the above-prepared white inorganic heat insulating paint of the present invention is applied twice on the surface to finish it into a 2 mm thick coating film. Fourthly, the fourth tile of the tile is called D, and the above prepared yellow inorganic heat insulating paint of the present invention is applied twice on the surface to finish it yellow to a 2 mm thick coating film. Fifth, the fifth tile of the tile is called E, and the surface is coated with an inorganic heat insulating paint of the composition formula CaCO3 (calcium carbonate) of the present invention on the surface twice to form a coating film having a thickness of 2 mm. Finish. The coating film of the sample tile plates B, C, D, and E is naturally dried through 7 days.

  As the main equipment of the experimental examples of the present invention, the first is the above-mentioned A, B, C, D, E sample tile plate, the second is 100 ° C. hot water as the heat source, and the third is the commercial height. Buy 5 iron containers with a diameter of 15cm and a mouth diameter of 10cm and devise so as not to dissipate much heat, and the fifth is five thermometers.

  In carrying out the experiment of the present invention, the five thermometers are set to the same temperature as the room temperature in advance. And 5 people put hot water of 100 ° C. at the same time to the mouth of each iron container 5 mm, and then 5 people in the above 5 iron containers with the surface or coated surface of the above 5 sample tile plates facing up At the same time, cover. In measuring the temperature, five people simultaneously read from the five thermometers on the five sample tile plates so that there is no error in the temperature to be read in time series. For each sample tile, the state of temperature rise on the lid during measurement, or the state of temperature fall from the high temperature state of the detached lid is measured. Finally, the state of temperature rise and the state of temperature drop are plotted on a sorezore time-temperature graph.

  In the above implementation method, the temperature rise of the five sample tiles in the state of being covered is measured and recorded every minute for 10 minutes. Then, the state of the temperature drop from the temperature rise state of the five sample tile plates removed from the iron container is measured and recorded for 10 minutes every minute. Record the data in a time-temperature graph with the temperature rising state and the temperature falling state, respectively.

These are time-temperature graphs showing the temperature rise of the five sample tile plates as a comparative experiment.

FIG. 5 is a time-temperature graph showing a state in which the temperature of the five sample tile plates is decreasing from a rising state as a comparative experiment.

Claims (6)

  Ca (OH) 2 (slaked lime), CaO (quick lime), CaCO3 (calcium carbonate), SiO2 (silicon dioxide), CaSiO3 (calcium silicate), TiO2 (titanium dioxide), MgO (magnesium oxide) as inorganic additive components An inorganic heat-insulating paint or an inorganic heat-insulating coating film characterized by using an inorganic paint containing one or more selected from among them.   An inorganic heat-insulating paint or an inorganic heat-insulating coating film, wherein an inorganic paint containing 90% or more is used as the content of one or more combinations of the inorganic additive components according to claim 1.   An inorganic coating containing any one or a plurality of combinations selected from compositional formula CaCO3 (calcium carbonate), 10-100 μm ceramic system, fly ash system, glass-based hollow or vacuum beads as a heat insulating component The inorganic heat-insulating paint or inorganic heat-insulating coating film according to claim 1 or claim 2, characterized in that it is used.   The content of any one or a plurality of combinations selected from the heat insulating components described in "Claim 3" is 3 to 40% by volume with respect to the total added components of the inorganic coating material described in "Claim 1". The inorganic heat-insulating paint or inorganic heat-insulating coating film according to claim 1, claim 2, or claim 3, wherein an inorganic paint to be added is used.   “Claim 1”, “Claim 2”, “Claim 1”, “Claim 1”, “Claim 2”, “Claim 1”, and “Claim 1”, “Claim 2”, “Claim 1”, “Claim 1”, “Claim 1”, “Claim 1”, and “Claim 1”. The inorganic heat insulating paint or the inorganic heat insulating coating film according to claim 3 or 4.   90% or more of the inorganic additive component described in “Claim 1” is contained, and the addition amount of the heat insulation component described in “Claim 3” is added in a volume ratio of 3 to 40% with respect to the total content. “Claim 1”, “Claim 2”, “Claim 1”, “Claim 1”, “Claim 2”, “Claim 1”, “Claim 1”, “Claim 2”, “Claim 1”, and “Claim 1”. The inorganic heat insulating paint or inorganic heat insulating coating film according to claim 3, claim 4, or claim 5.