JPH02212345A - Production of woody cement plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is suitable for use as an exterior wall base in places where odor is a problem, such as new buildings, gymnasiums, club rooms, warehouses, food processing plants, banquet halls, toilets, etc. The present invention relates to a wood-based cement board that is useful as an interior sound absorbing material, and particularly to a method for producing a wood-based cement board that is devised to exhibit excellent properties such as deodorizing properties.

[Prior art] Conventional wood-based cement boards have heat resistance, heat insulation, fire retardancy, and sound absorption properties in terms of their uses, such as exterior bases, roof bases, slab bases, exterior wall materials, and interior sound absorbing materials. Various properties such as strength and weather resistance are required, and in order to satisfy these properties, for example, improvements are made to the arrangement of wood fiber pieces and the structure itself, and various additives are added to cement and chemical methods are used to meet the above requirements. There are things that we want to satisfy.

[Problem to be solved by the invention] However, along with the quality improvement of living spaces in recent years, demands on buildings are also gradually changing.
There is a strong interest in dealing with unpleasant odors, and various deodorants,
Although air cleaners and the like exist, they are not as effective as expected, and the larger the space, the less effective they become, making it economically unfeasible to install numerous deodorizers or air cleaners. .

Also, when a building is newly constructed or renovated, the building is filled with humidity and strong odors such as organic solvents, so many people have to leave the windows open for a while. It is.

Therefore, by adding various additives in the manufacturing process of wood-based cement boards, we can improve moisture absorption and WRR properties.

There are wood-based cement boards that exhibit adsorption properties, and some of these wood-based cement boards also have deodorizing performance secondary to the adsorption properties. However, the deodorizing performance of the conventional wood-based cement board cannot be expected to be long-lasting and fast-acting to the satisfaction of everyone.

In the present invention, there is no need to install deodorizers, air cleaners, etc. in rooms where unpleasant odors accumulate, and fenestrations can be left open for a while until the odor of organic solvents etc. disappears when constructing or renovating a building. Additives that have a remarkable deodorizing effect are added to the wood cement board itself, which has a wide surface area in buildings and has been used as an exterior base, roof base, slab base, interior sound absorbing material, etc., without having to do anything. By doing so, it is possible to provide a wood-based cement board that exhibits a strong deodorizing effect in addition to the conventional excellent properties such as humidity resistance, heat resistance, fire resistance, sound absorption, and bending strength. With the goal.

[Means for solving the problem] The above-mentioned problem is solved by using oxygen-treated ceramic powder with a low molecular gas adsorption oxidation catalyst function and a deodorizing agent when blending wood fiber and cement during the wood-based cement board manufacturing process. A method for manufacturing a wood-based cement board, characterized in that the wood fibers and cement are mixed into a mixer containing wood fibers and cement or directly into the cement, or during the process of manufacturing wood-based cement boards, the wood fibers and when blending cement.

Oxygen-treated ceramic powder having a low molecular gas adsorption oxidation catalyst function is mixed and kneaded into a mixer containing wood fibers and cement or directly into the cement.
This was fixed and cured to form a wood-based cement board, and a paste-like liquid containing oxygen-treated ceramic powder having a low molecular gas adsorption oxidation catalyst function and a deodorizing agent was sprayed onto the surface. The problem is solved by a method for manufacturing wood-based cement boards characterized by the following.

[Example] Next, one embodiment of the manufacturing method of the present invention will be described.

First, the raw wood is cut to a predetermined size. This is then passed through a wood wool machine to produce wood fibers.

On the other hand, cement contains ceramic powder that has a low molecular gas adsorption oxidation catalyst function, which is made by applying electromagnetic waves or ozone to a fine porous material and oxygenating it, and a long-lasting deodorizing catalyst that uses ferrous sulfate. and knead with water.

Next, the wood fibers and cement are blended in a mixer.

After dropping a fixed amount of this onto the template using a measuring device, apply thickness gauges on both sides to form the desired thickness, then cover the template with the template, press, and fix with metal fittings for a certain period of time. This is taken out after the required curing time has elapsed.

In another embodiment of the present invention, electromagnetic waves or ozone are applied to the fine porous material on the - side of the wood-based cement board taken out, that is, the side that will be the surface at the time of construction (# is the long side), and oxygen treatment is performed. Ceramic powder that has a low molecular gas adsorption oxidation catalyst function that has been subjected to this process is mixed with a long-lasting deodorizing catalyst using ferrous sulfate, formed into a paste, and sprayed along the rough shape of the surface. It is something. The reason for spraying along the rough shape of the surface with uneven parts is to prevent reducing the air contact area as much as possible, and to increase the air contact area to more effectively exhibit the various properties described below. be.

Furthermore, the greatest feature of the present invention is the use of ceramic powder that has a low-molecular gas adsorption oxidation catalyst function, which is obtained by applying electromagnetic waves or ozone to oxygen-treated fine porous material, and the use of ferrous sulfate to ensure long-term sustainability. The deodorizing catalyst may be mixed into the cement in advance, but the same effect can be obtained by mixing it into a mixer containing cement and wood fibers.

In addition, in the wood-based cement board manufacturing process of the present invention, in addition to a long-lasting deodorizing catalyst using ferrous sulfate, in order to further improve its deodorizing performance, it has a deodorizing performance equivalent to that of the deodorizing catalyst described above. Zirconium fine powder may be mixed.

Next, a ceramic powder having a low-molecular gas adsorption oxidation catalyst function is obtained by treating the fine porous material that forms the basis of the present invention with oxygen by applying electromagnetic waves or ozone.

A long-lasting deodorizing catalyst using ferrous sulfate and zirconium fine powder will be described in detail.

First, in manufacturing the ceramic powder, a porous material such as zeolite or Oya stone was used as a base material, which was crushed, a small amount of metal oxide was added, and cross-wire sintering was performed to remove moisture. It is a material that is treated with oxygen by applying electromagnetic waves or ozone to give it adsorption and oxidation catalytic effects.
By mixing this ceramic powder into a wood-based cement board or applying it to its surface, you can remove ammonia, hydrogen sulfide, and the ammonia component contained in gasoline engine exhaust gas and hot sake, which are typical bad odors. It also catalyzes the oxidation of chlorine gas, carbon dioxide gas, etc. from chlorine, etc.

It deodorizes through adsorption and far infrared rays. In addition, unlike activated carbon, which deteriorates deodorizing performance when adsorbing odor substances into its pores, this ceramic powder uses the oxidation catalytic action of the catalytic ability of metal atoms to convert odor substances into foreign substances and eliminate them. As a result, it has stable deodorizing performance over a long period of time. In addition to the deodorizing performance mentioned above, it also has a bactericidal effect due to its excellent oxidation catalytic action, moisture absorption and
Of course, it also exhibits a humidity control effect and an antifungal effect derived from these effects.

Next, long-lasting deodorizing catalysts using ferrous sulfate have already been used indoors, in cars, in toilets, refrigerators, etc.
It is well known to be used in garbage boxes, etc., and absorbs malodorous gases such as ammonia, mercaptans, and hydrogen sulfide through the fast-acting and powerful oxidation catalytic action of the divalent iron ions of ferrous sulfate. The deodorizing catalyst used in the present invention is appropriately selected from among the various deodorizing catalysts described above.

Furthermore, zirconium fine powder, which is made by pulverizing zirconium and is known for its heat resistance and excellent resistance to corrosion by alkaline gases such as chlorine gas, has a strong oxidation catalytic effect equivalent to the deodorizing catalyst agent mentioned above. When used in combination with the deodorizing catalyst, it exhibits an excellent deodorizing effect synergistically.

Then, the ceramic powder and the deodorizing catalyst agent are mixed together, or the ceramic powder, the deodorizing catalyst agent, and the zirconium fine powder are kneaded, and this is mixed into the wood-based cement board in the manufacturing process of the wood-based cement board, Alternatively, by applying it to the surface, it exhibits a synergistic effect that exceeds the deodorizing, adsorption, and oxidation catalytic effects that the ceramic powder and the deodorizing catalyst have, respectively.

In addition, by using thinned wood from cedar, pine, or cypress as the wood used for wood-based cement boards, the sterilizing effect against mold and rot caused by the chemicals naturally contained in these woods can be further enhanced. It becomes possible to grant

Furthermore, in the wood-based cement board manufactured by the manufacturing method of the present invention, in addition to the above-mentioned excellent deodorizing properties, the wood-based cement board has odor-emitting properties that are generated from oxygen-treated ceramic powder that has a low molecular gas adsorption oxidation catalyst function. Not only does it maintain the freshness of fresh foods through the far infrared rays and oxidation catalytic effect, and has moisture absorption and humidity control effects, but it also has the heat resistance, heat insulation, fire retardancy, sound absorption, and bending strength of conventional cement boards. It does not reduce its excellent properties such as weather resistance in the slightest.

[Effects of the Invention] However, according to the present invention, wood cement board contains
Ceramic powder that has a low molecular gas adsorption oxidation catalyst function, which is obtained by applying electromagnetic waves or ozone to oxygen treatment on a kneaded fine porous material, and a long-lasting deodorizing catalyst using ferrous sulfate. Due to the synergistic effect of both, it can be used in places where odor is a problem such as gymnasiums, club rooms, warehouses, food processing plants, banquet halls, toilets, etc., and in new buildings. In places where the smell of solvents, etc. is pervasive, building and construction can be done simply by using wood-based cement boards manufactured by the manufacturing method of the present invention, and ceilings, walls, floors, etc. made of wood-based cement boards can be installed. Since the entire large surface area can be effectively used as an odor adsorption surface, it has an excellent deodorizing effect that is fast-acting and fully exerts itself over a long period of time, making it possible to maintain a suitable indoor environment. It can provide an ideal atmosphere for people or stored items. Also,
By mixing zirconium fine powder having the same deodorizing performance as the deodorizing catalyst agent, it is possible to exhibit even better synergistic deodorizing performance.

Therefore, by simply constructing a building using the wood-based cement board manufactured by the manufacturing method of the present invention, it is possible to install deodorizers, air cleaners, etc. as in the past in a building that is full of odors, or use windows. This eliminates the need for excessive ventilation such as leaving the floor open, and in addition, by imparting excellent deodorizing properties to the wood-based cement board,
This will also contribute to expanding the use of wood-based cement boards in various types of buildings.

Furthermore, according to the wood-based cement board manufactured by the manufacturing method of the present invention, the ceramic powder is oxygen-treated and has a low molecular gas adsorption oxidation catalytic function.

The long-lasting deodorizing catalyst using ferrous sulfate and the oxidation catalytic action of fine zirconium powder also have a sterilizing and deodorizing effect on stored items, so you can prevent vegetables, fruits, or their freshness from deteriorating as much as possible. When used as a storage device for food, etc., such as a warehouse, etc., it features an even more useful freshness-preserving effect.

Claims (4)

[Claims] (1) During the wood-based cement board manufacturing process, when wood fibers and cement are blended, oxygen-treated ceramic powder that has a low molecular gas adsorption oxidation catalyst function and a deodorizer are contained in the wood fibers and cement. A method for producing a wood-based cement board, characterized in that it is mixed in a mixer or directly into cement and kneaded. (2) During the wood-based cement board manufacturing process, when blending wood fibers and cement, oxygen-treated ceramic powder with a low molecular gas adsorption oxidation catalyst function is mixed into a mixer containing wood fibers and cement. Oxygen-treated ceramic powder with a low molecular gas adsorption oxidation catalyst function and a deodorizer are added directly to the cement, kneaded, and then fixed and cured to form the surface of the wood-based cement board. A method for producing a wood-based cement board characterized by spraying a paste-like liquid. (3) The method for manufacturing a wood-based cement board according to claim 1 or 2, wherein the deodorizing agent used during the wood-based cement board manufacturing process is a deodorizing catalyst agent that has long-lasting properties. (4) The method for manufacturing a wood-based cement board according to claim 1 or 2, characterized in that fine zirconium powder is mixed into the deodorizing agent used during the process of manufacturing the wood-based cement board.