JPH0218304B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to heat storage building materials used in heat storage structures such as houses.

[Background technology]

For passive solar houses, there is a need for heat storage building materials that have a high heat storage density and utilize compact latent heat storage materials.

The biggest problem with using this latent heat storage material is its poor thermal conductivity. For this reason, if the latent heat storage material is simply sealed in an impermeable container,
Due to its poor thermal conductivity, heat storage efficiency was poor, and its performance was not fully demonstrated.

In order to solve this drawback, it has been considered to create building materials by mixing latent heat storage materials into concrete or plaster. However, in the case of inorganic hydrated salt-based latent heat storage materials, deliquescence and efflorescence occur. In the case of paraffin-based and oil-based latent heat storage materials, a drawback is that when the use temperature of the building material exceeds the melting point, the heat storage material oozes out onto the surface of the building material. In the case of a paraffin-based or oil-based latent heat storage material, it is also possible to impregnate absorbent aggregate with the latent heat storage material and mix the aggregate into cement, gypsum, or the like. In this way, since the heat storage material is held in the aggregate, even if the heat storage material repeatedly melts and solidifies due to changes in the outside air, it will hardly seep out to the surface.

However, when heat storage building materials are used as interior decoration materials, there are problems in that if even a small amount of the heat storage material seeps onto the surface, the appearance will be poor, and interior wallpaper will be difficult to apply, and even if it is pasted, it will peel off quickly. was left behind.

[Purpose of the invention]

In view of these circumstances, it is an object of the present invention to provide a heat storage building material that does not seep out of the heat storage material onto the surface of the building material and to which wallpaper or the like can be freely and tightly attached.

[Disclosure of the invention]

In order to achieve such an object, the present invention has provided that at least one latent heat storage material selected from the group consisting of paraffin type and oil type is dispersed inside the main body of the plate-shaped building material, and the front and back surfaces of the main body are The gist of the present invention is a heat storage building material in which paper sheets are laminated, and an oil-proof sheet and a paper sheet are further laminated in order on at least the paper sheet on the front side.

The present invention will be explained in detail below with reference to the drawings showing one embodiment thereof.

As shown in FIG. 1, the heat storage building material according to the present invention is a plate-shaped building material in which powder or pellets of paraffin-based or oil-based latent heat storage material 2 are dispersed in a gypsum board 1 as a main body. There is. Paper sheets 3, 3 are laminated on the front and back surfaces of this main body. An oil-proof sheet 4 made of aluminum foil, a plastic sheet such as polyethylene, etc. is laminated on the paper sheet 3 on the front side, that is, the interior side, with an adhesive, and then the oil-proof sheet 4 is laminated again on top of the oil-proof sheet 4. Paper sheets 5 are stacked.

This heat storage building material has such a structure, so
Even when the heat storage material 2 such as paraffin or oil is melted, it is not blocked by the oil-proof sheet 4 and does not seep out to the interior surface side, so that the appearance is always good. In addition, even if wallpaper or cloth is applied to the outermost paper sheet 5 like a normal gypsum board, it will not peel off.
Furthermore, if aluminum foil is used as an oil-proof sheet,
Flammability caused by dispersing paraffin or oil in gypsum board can also be reduced.

The manufacturing method of this heat storage building material is carried out as shown in FIG. That is, a gypsum slurry 8, which is made by adding water to gypsum as a base material, and the heat storage material 2 are placed in a stirring tank (mixer) 9, and are thoroughly stirred to evenly disperse the heat storage material 2 in the gypsum slurry 8. This mixture is placed on a laminated sheet in which paper sheet 3, oil-proof sheet 4, and paper sheet 5 are laminated in this order, and paper sheet 3 is further laminated from above, and pressed from above and below with press rolls 6, 6 to form a plate shape. do. This molded product is dried and hardened to obtain a heat storage building material. In addition,
The oil-proof sheet 4 and the outermost paper sheet 5 may be laminated simultaneously as in this embodiment, or
They may be laminated later.

The heat storage building material according to the present invention is not limited to those of the above embodiments. For example, instead of using paraffin or oil powder, paraffin or oil can be used for polyethylene, polypropylene, rubber, etc.
It may be impregnated with organic or inorganic aggregate such as wood, perlite, vermiculite, etc., and this aggregate may be dispersed in gypsum. If the aggregate has water-absorbing properties, it is advisable to treat the aggregate with water-repellent treatment. The water repellent treatment and the type and particle size of the aggregate may be selected within known ranges. In this way, even if high temperatures are applied during the curing and drying process of the gypsum board, the heat storage material will not melt and be replaced by water, and unlike when using powder or pellets, it will not melt at temperatures below their melting points. There is no need for curing or drying, which simplifies the process. Note that the paraffin-based and oil-based latent heat storage materials may be selected from those having a phase transition temperature that corresponds to the temperature range in which the building material is used.

The base material is not limited to gypsum, and may be any material used as a building material, such as cement.

An oil-proof sheet and a paper sheet may be laminated not only on the front side but also on the back side. If you do this,
Both sides can be used as interior surfaces.

〔Effect of the invention〕

As described above, in the heat storage building material of the present invention, at least one latent heat storage material selected from the group consisting of paraffin-based and oil-based materials is dispersed inside the main body of the plate-shaped building material, and the front and back surfaces of the main body are covered with paper sheets. are laminated, and an oil-proof sheet and a paper sheet are further laminated in order at least on the paper sheet on the front side, so that even if the heat storage material repeats melting and solidification, it will not seep out to the front side. It does not come off and always looks good even when used as an interior material, and wallpaper etc. can be applied freely and will not come off.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing one embodiment of the heat storage building material according to the present invention, and FIG. 2 is an explanatory view of its manufacturing method. 1... Gypsum board (building material main body), 2... Latent heat storage material,
3, 5...paper sheet, 4...oil proof sheet.

Claims (1)

[Claims] 1. At least one latent heat storage material selected from the group consisting of paraffin-based and oil-based materials is dispersed inside the main body of the plate-shaped building material, and paper sheets are laminated on the front and back surfaces of the main body. and a heat storage building material, wherein an oil-proof sheet and a paper sheet are further laminated in order on at least the paper sheet on the front side. 2. The heat storage building material according to claim 1, wherein the latent heat storage material is impregnated with aggregate and dispersed inside the main body. 3. The heat storage building material according to claim 2, wherein the aggregate is treated to be water repellent.