JPH0247450A - Ceiling of constructed structure - Google Patents

Abstract

PURPOSE:To eliminate drops and aggregation or residence of condensed water in a condensation exposed surface and to prevent the occurrence of stains and dirty marks on the exposed surface of the ceiling of the inside of a room by applying a coating with a good wettability to the condensation exposed surface of the inside of the room. CONSTITUTION:Aqueous solution and the like of an inorganic composition such as a heating dissolution product and others of alkali silicate is applied equally to the lower surface of an inclined glass ceiling board 2 of a sun-room 1 and to the lower surface of a metal ceiling member 3. After that, it is heated and hardened. According to the constitution, a coating with a better wettability is applied to an exposed surface of the inside of a room of the glass ceiling board 2 and the metal ceiling member 3. Or, the glass board and the metal ceiling member to which such a better wettable coating is applied in advance are used for a ceiling construction. Or, the same coating with the same manner is applied to a plastic ceiling or a required surface of the plastic material before constructing the ceiling.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a ceiling of an architectural structure, specifically a sloped ceiling of an architectural structure, in which at least a part of the exposed indoor surface of the ceiling is non-condensing. It relates to ceilings of architectural structures made of surfaces such as plate glass, aluminum, iron, or sash or boards that have been plated, chemically treated, or painted, or plastic surfaces.

Conventional technology and its problems Traditionally, when condensation occurs on the exposed indoor side of the ceiling of a building structure, it drips and wets the area or causes stains. There were problems such as condensation water evaporating on the surface and leaving dirty spots.

The purpose of the present invention is to eliminate the dripping, agglomeration, and accumulation of condensed water on the above-mentioned ceiling condensation-prone exposed surfaces of building structures;
The aim is to eliminate the above problems.

Means for Solving the Problems The above objects of the present invention are achieved by a ceiling of an architectural structure having the following configuration.

1. A ceiling of an architectural structure, characterized in that the ceiling has a sloping ceiling, the exposed surface of which is exposed to condensation on the indoor side of the ceiling is coated with a highly water-wettable coating.

The above-mentioned coatings with good water wettability include ceramic coatings with improved water wettability, coatings with hydrophilic silane compositions, coatings with organic films with improved water wettability, and coatings containing hydrophilic polymers. Preferred examples include covering, covering by flocking short fibers, and the like.

The above-mentioned ceramic coating may include an aqueous solution of an inorganic composition such as a heat-dissolved product of an alkali silicate, for example, CRM (trade name).
A coating can be applied by coating the surface to be coated and curing it by heating. Such ceramic coatings are particularly suitable for glass. As for the application method, methods such as spray method, dipping method (however, for ceiling materials before ceiling construction), spinner method, etc. can be applied. The heating temperature is 130-300
℃, more preferably about 180 to 250℃.

A preferable example of the heat-dissolved product of the alkali silicate is a heat-dissolved product of an alkali silicate containing one or a mixture of alkali metals such as Na% and Li% as the alkali. The heat-dissolved product of the alkali silicate preferably has a molar ratio of silicate to alkali of 4 or more and/or contains a surfactant. If the molar ratio is 4 or more, the corrosion resistance and fire resistance of the coating will improve, and the durability of its water wettability will be good. Addition of surfactants improves the water wettability of the coating.

It is also possible to replace a part of the alkali with an alkaline earth metal (this makes the basicity milder,
There is no occurrence of spots due to alkali elution.

Ceramic coatings on glass or metal ceilings can also be applied by baking. As the coating material therein, a heat-dissolved product of an alkali silicate similar to that described above can be used, and if necessary, a coloring agent such as a dye or a pigment can be added thereto. The product is preferably the same as described above for the same reasons as above.

The above-mentioned silane composition coating can be applied by applying a composition containing a hydrophilic silicic acid sol as a main component to the surface to be coated and drying it. Coating of such compositions is particularly suitable for glass. For application, the same method as described above can be applied.

Drying temperature is 20-70℃, more preferably 25-60℃
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The above-mentioned organic film coating can be formed by kneading 0.1 to 5% surfactant into polyvinyl chloride or polyethylene, or by immersing a cellulose film in a mixture of sodium hydroxide and potassium hydroxide. A coating can be applied in which a film with improved water wettability on the surface is attached to the surface to be coated with an adhesive. The organic film coating described above is particularly suitable for metal ceiling materials.

The above paint coating includes a paint formulated to form a coating film by crosslinking a hydrophilic polymer mainly composed of hydroxyethylene methacrylate with melamine or epoxy;
A coating made by mixing a hydrophilic vinyl compound with a silane compound, an organic/inorganic composite coating known as Cosmer (trade name), etc. can be applied to the surface to be coated and dried. The paint coating described above is particularly suitable for metal ceiling materials.

The above-mentioned flocked covering can be a covering made by densely flocking short fibers on the flocked surface in the presence of an adhesive. As short fibers, synthetic fibers such as nylon, polyester, and acrylic fibers can be advantageously used.

The fiber length is 0. 1~:2+m, more preferably 0.
It is about 2~0.8a+m, and the thickness is 2~3 denier.
The flocking density is about 10,000 to 100,000 hairs/cj.

Electrostatic flocking can be advantageously applied to the flocking means. The fibers used may have their water wettability improved by plasma gas. Furthermore, the fiber itself may have good water wettability.

The flocked coating described above is particularly suitable for metal ceilings.

On the sloped ceiling of a building structure with a coating as described above, if condensed water forms on the exposed surface on the indoor side, it will not form as dew but will be dispersed due to the good water wettability of the coating on that surface. The water flows along the slope of the surface toward the lower end thereof. That is, there is no dripping or agglomeration of condensed water on the exposed indoor ceiling surface.

Incidentally, according to the experimental results of the present inventors, when a ceiling surface of plate glass with an inclination angle of 5'' and a length of 1 m is covered with the above-mentioned coating of the inorganic composition, the outdoor temperature is 0°C, the indoor temperature is 30°C, and the indoor temperature is After leaving it under conditions of RH 95% for 4 hours, no water droplets fell from the ceiling surface (it was confirmed that condensed water continued to flow down the ceiling surface to the sash at the low end of the ceiling).

Effects of the Invention As described above, according to the present invention, there is no dripping, agglomeration, or stagnation of condensed water on the exposed surface of the ceiling on the indoor side, so there is no problem that the area gets wet or stained due to dripping of condensed water, and there is no problem with condensed water. This can eliminate the problem of dirty spots on the ceiling surface due to evaporation.

Embodiments Next, embodiments of the present invention will be described with reference to the accompanying drawings. The illustrated example is for a sunroom.

Example 1 Alkali silicate with one or a mixture of alkali metals (hereinafter referred to as substance A) or substance A with a molar ratio of silicate to alkali of 5.6 and/or with the addition of an appropriate amount of surfactant After applying an aqueous solution of the heated and dissolved product evenly to the lower surface of the sloping glass ceiling board (2) and the lower surface of the metal ceiling material (3) of the sunroom (1) by a spray method, spinner method, etc., approximately 100 to 300 Heat and harden at ℃,
As a result, a coating (4) with good water wettability is applied to the indoor exposed surfaces of the glass ceiling board (2) and the metal ceiling material (3). Alternatively, the ceiling is constructed using glass plates and metal ceiling materials that have been previously coated with such a water-wettable coating using a similar method. In the case of this latter embodiment, the aqueous solution serving as the coating material may be applied by a dipping method. Alternatively, a similar coating may be applied to a plastic ceiling or a required surface of a plastic material before the ceiling is constructed in the same manner as described above.

Example 2 A composition containing a hydrophilic silicic acid sol as a main component was evenly applied to the same ceiling board and ceiling material as in Example 1, or to the surface to be coated before ceiling construction, and then Heat and dry at about 25-60°C. In this way, a highly water-wettable coating (4) is formed on the exposed surface of the ceiling on the indoor side.

Example 3 A film made by kneading 0.1 to 5% surfactant into polyvinyl chloride or polyethylene, or a film made by kneading 0.1 to 5% surfactant into polyvinyl chloride or polyethylene, or immersing it in a mixed solution of sodium hydroxide and potassium hydroxide to improve the water wettability of the surface. A cellulose-based film is attached with an adhesive to the same ceiling board and ceiling material as in Example 1, or to the surface to be coated before the ceiling is installed, thereby providing a coating with good water wettability on the exposed indoor surface of the ceiling. (4) is formed.

Example 4 A paint prepared by crosslinking a hydrophilic polymer mainly composed of hydroxyethylene methacrylate with melamine or epoxy to form a coating, or a paint prepared by mixing a hydrophilic vinyl compound with an organic silane compound. Alternatively, apply an organic/inorganic composite paint with the trade name Cosmer to the same ceiling board and ceiling material as in Example 1 or the surface to be coated before ceiling construction by the same method as in Example 1, and dry it. A coating (4) with good water wettability is formed on the exposed surface of the ceiling on the indoor side.

Example 5 Synthetic fibers having a length of 0.1 to 2 mm and a thickness of 2 to 3 denier were electrostatically flocked at a flocking density of 10,000 to 100,000/cI# to produce the same ceiling board and ceiling material as in Example 1. Alternatively, hairs are planted on the surface to be coated before the ceiling is installed, thereby applying a coating (4) with good water wettability to the exposed indoor surface of the ceiling.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing one embodiment of the present invention.
FIG. 3 is an enlarged cross-sectional view taken along the line ■--■ in FIG. 1. (1)...Sunroom, (3)...Metal ceiling material, (2)...Glass ceiling panel (4)...Coating (and above)

Claims (1)

[Scope of Claims] [1] A sloping ceiling of an architectural structure, characterized in that an exposed indoor surface of the ceiling that is exposed to condensation is coated with a highly water-wettable coating. . [2] The ceiling of a building structure according to claim 1, wherein the coating with good water wettability is a coating of a hydrophilic silane composition. [3] The ceiling of an architectural structure according to claim 1, wherein the coating with good water wettability is a coating with a paint containing a hydrophilic polymer. [4] The ceiling of an architectural structure according to claim 1, wherein the covering with good water wettability is a covering made of flocked short fibers. [5] A sloping ceiling of an architectural structure, characterized in that the exposed indoor surface of the ceiling is coated with a highly water-wettable ceramic material. [6] A sloping ceiling of a building structure, the ceiling of the building having an indoor surface exposed to condensation and covered with an organic film having good water wettability.