JPH0254055A - Wall face - Google Patents

Abstract

PURPOSE:To prevent the condensation or staying of water by a method in which a cover having good wettability is applied to the indoor side wall liable to dewfall or water condensation of room panel or interior parts. CONSTITUTION:A heat-molten product of alkali silicate, etc., is coated by spraying on the indoor side exposed face or column of sun room 1 and glass wall 2 or exposed face of metal parts such as sash and hardened at 100-300 deg.C to form a ceramic covering of good wettability. A covering of hydrophilic silane composition, an inorganic film of improved wettability, a paint containing hydrophilic polymers, or short fiber flocking may also be cited as preferable examples. The occurrence of troubles such as staining damage to wall face and damaging the transparency and reflectivity of the wall face can thus be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to walls, specifically walls that constitute a room of an architectural structure or vehicle, or a vertical wall used as an interior, such as an inner wall surface, a column surface, At least a part of the exposed interior surface of a vertically facing surface of a window glass, mirror surface, or similar object is a surface that is susceptible to dew condensation or moisture condensation, such as plate glass, mirror, aluminum-based, iron-based, or plated or chemically treated. , relating to walls made of painted sash, boards, and plastic surfaces.

Conventional technology and its problems Conventionally, when condensation or moisture condensation occurs on the exposed indoor side of a vertical wall that constitutes a room or serves as an interior decoration, several surfaces have an unpleasant appearance that looks like sweat. Condensation or condensed water evaporates on several surfaces, causing dirty spots on several surfaces, and also impeding the visibility of vertical walls (however, in the case of transparent walls) and impairing reflectivity. There were other problems.

The purpose of the present invention is to eliminate the agglomeration or accumulation of condensed water on the dew condensation or moisture condensation surface of the vertical wall surface as described above,
The aim is to eliminate the above problems.

Means for Solving the Problems The above objects of the present invention are achieved by a wall surface having the following configuration.

A vertical wall constituting a room or serving as an interior decoration, characterized in that the exposed surface of the wall on the indoor side where condensation or water condensation 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 the application method, methods such as a spray method, a dipping method (for wall materials before wall construction), a 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 KSLi 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 water 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 substitute a part of the alkali with an alkaline earth metal, which has mild basicity and does not cause spots or the like due to alkali elution.

Ceramic coatings on glass or metal wall materials 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 wall coverings.

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 an organic silane compound, an organic/inorganic composite coating under the trade name Fusmar, etc., can be applied to the surface to be coated and dried. The above paint coating is particularly suitable for metal wall coverings.

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 to 21111. More preferably 0.
The diameter is approximately 2 to 0.8 mm, the thickness is 2 to 3 deniers, and the flocking density is approximately 10,000 to 100,000 strands/cd.

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 walls.

If the above-mentioned coated vertical walls are used as part of a room or as an interior decoration, if condensed water forms on the exposed surface of the room, it will not form as dew but will spread over several walls. It diffuses due to its good water wettability and flows down several surfaces. That is, there is no condensation or stagnation of condensed water on the exposed indoor wall surface.

Incidentally, according to the experimental results of the present inventors, in the case of an aluminum alloy column, a 3 mm thick mirror, a 5 mm thick plate glass, and a 1 mm thick stainless steel column, each of which has its vertical exposed indoor wall surface covered with the ceramic coating mentioned above, In the case of a 5 mm thick plate glass whose vertical exposed wall surface on the indoor side is covered with an organic film, and in the case of a surface plus deck laminate board whose vertical exposed wall surface on the indoor side is covered with the above-mentioned silane composition. Regarding the outdoor temperature (used in the freezer), the temperature is 0.
℃, indoor temperature of 30℃, and indoor humidity of 95%.Although slight clouding was observed on the wall surface at the beginning of the experiment, the moisture condensation did not grow to droplets, and smooth water formed within 30 minutes. It became a wet surface, and there was no change even after about 4 hours, and it was observed that the water flowed down the smooth, homogeneous wet surface, and the surface remained smooth and wet all the time.

In addition, after the experiment was completed and the wall surface was completely dried after 3 days at room temperature indoors and outdoors, the experiment was conducted again under the same conditions as above, and the same water wettability as in the previous experiment was observed.

In addition, among the above surface treatments, the ceramic coating described above and the organic film coating described above produce a smooth water-wetted surface from the initial stage of water condensation, do not become cloudy, and also have an anti-fog effect. was recognized.

Effects of the Invention As described above, according to the present invention, condensed water does not aggregate or stagnate on the vertically exposed indoor wall surface, so some surfaces may have an unpleasant sweaty appearance, or the condensed water may evaporate. It is possible to eliminate the problem of dirty spots appearing on several surfaces and the problem of impairing the transparency and reflectivity of several surfaces.

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 An aqueous solution of the heated and dissolved product is applied to the exposed indoor side of the vertical glass wall (2) that constitutes the sunroom (1) or interior decoration, and the indoor side of metal members (3) such as pillars and sashes. After it is evenly applied to the exposed surface by a spray method, spinner method, etc., it is heated and cured at about 100 to 300° C., thereby providing a coating (4) with good water wettability to the indoor exposed surface. Alternatively, a room or interior is constructed using room constituent materials, pillar materials, plates, and interior materials that have been previously coated with such water-wettable coatings 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 room or interior made of plastic, or to a required surface of a plastic material before construction of a room or interior in the same manner as described above.

Example 2 A composition containing a hydrophilic silicic acid sol as a main component is uniformly applied to the desired surface of the object to be coated in the same manner as in Example 1, and then heated and dried at about 25 to 60°C.

In this way, a coating (4) with good water wettability is formed on the vertically exposed surface facing the indoor side of the room structure or interior.

Example 3 Film formed by kneading 0.1 to 5% surfactant into polyvinyl chloride or polyethylene, or cellulose whose surface was immersed in a mixed solution of sodium hydroxide and potassium hydroxide to improve water wettability. The system film is attached to the required surface of the object to be coated using an adhesive similar to that in Example 1, thereby coating (4) with good water wettability on the vertically exposed surface of the interior of the room as a room structure or interior. Form.

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, an organic/inorganic composite paint with the trade name Cosmer is applied to the required surfaces of the same coating object as in Example 1 by the same method as in Example 1, dried, and used as an indoor vertical as a room structure or interior. Orientation: Cover the exposed surface with good water wettability (
4) Form.

Example 5 Length 0. Synthetic fibers with a thickness of 1 to 2 deniers and a thickness of 2 to 3 deniers were flocked by electrostatic flocking at a flocking density of 10,000 to 100,000/air on the required surface of the same object to be coated as in Example 1. A coating (4) with good water wettability is applied to the vertically exposed indoor surface of the room structure or interior.

[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, (2)...Glass wall (3)...Metal parts such as pillars and sash, (4)...Coating (and above)

Claims (1)

[Scope of Claims] [1] A vertical wall constituting a room or used as an interior decoration, the exposed surface of which is susceptible to condensation or moisture condensation on the indoor side of the wall surface is coated with a highly water-wettable coating. A wall surface characterized by [2] The wall surface according to claim 1, wherein the coating with good water wettability is a hydrophilic silane composition. [3] The wall surface according to claim 1, wherein the coating with good water wettability is a coating with a paint containing a hydrophilic polymer. [4] The wall surface according to claim 1, wherein the covering with good water wettability is a covering made of flocked short fibers. [5] A vertical wall constituting a room or serving as an interior decoration, characterized in that the exposed surface of the wall on the indoor side where condensation or moisture condensation is coated with ceramics having good water wettability. wall surface. [6] A vertical wall that constitutes a room or serves as an interior decoration, the exposed surface of which is susceptible to condensation or moisture condensation on the indoor side of the wall is coated with an organic film that has good water wettability. Characteristic wall surface.