JPH0747510A - Building material - Google Patents

Abstract

PURPOSE:To obtain wood charcoal rigid enough to be used as a building material by carbonizing a wood material formed into a predetermined shape, filling a resin material in its constitutional voids, and solidifying it. CONSTITUTION:A wood charcoal building material obtained by forming a wood material into a shape meeting its intended use, carbonizing such formed material by an appropriate method to obtain formed charcoal 3, impregnating such formed charcoal 3 with a resin, and solidifying such impregnated resin. In impregnating formed charcoal 3 with resin, a system consisting of a filling case 12 equipped with a surge tank 10 and a resin liquid tank 20, a manometer 14, a safety pin 16, and a vacuum pump 18, is used. After the formed wood charcoal 3 is placed in the filling case 12, the vacuum pump 18 is operated to make a resin liquid enter the constitutional voids by decompression. And then after immersed in a solution under atmospheric pressure for about one hour, the formed wood charcoal 3 is transferred to a thermostat, and the impregnated resin is polymerized at an appropriate temperature for an appropriate duration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for utilizing charcoal, and more particularly to a technology for manufacturing a building material using charcoal.

[0002]

2. Description of the Related Art Conventionally, charcoal has been used as a filter for fuel or drinking water, or as a printing copper plate or a vehicle abrasive, and it has also been used for agricultural and forest seed beds due to its adsorptivity.

On the other hand, for building materials such as building panels and flowerbed blocks, wood, synthetic resin, bricks, ceramics, concrete and the like are used in terms of rigidity and cost.

[0004]

By the way, charcoal is a crystal aggregate having a high carbon content by thermally decomposing wood material, and emits highly efficient far infrared rays by heating. It is also known that as a result of containing carbon at high temperature, it has an excellent electromagnetic wave shielding property. In addition, since charcoal does not lose the original composition void of the wood material as a raw material, it has excellent properties in terms of hygroscopicity, heat retention, soundproofing, etc., and is lightweight.

However, charcoal is extremely brittle as a result of pyrolyzing wood, and does not have bending stress or tensile stress required for building materials.

Therefore, an object of the present invention is to improve the rigidity of charcoal to the extent that it can be used as a building material.

[0007]

[Means for Solving the Problems] In order to achieve the above object and achieve the above object, the building material according to the present invention carbonizes wood molded into a predetermined shape, while injecting a liquid resin in the composition void of the charcoal. The resin material is injected into the voids and solidified. In order to achieve the same purpose, charcoal powder is molded into a predetermined shape with a thermoplastic resin.

[0008]

[Function] When the wood molded into a predetermined shape is carbonized and the resin material is injected and solidified into the void portion of the charcoal composition void where the liquid resin can be injected, the charcoal is the resin injected into the tissue void. It exerts stresses against bending, tension and compression, and maintains the molded initial shape.

Also, depending on the molecular structure of the injected resin,
There is a limit to the amount of resin that can be impregnated into the voids of the charcoal structure,
The minute voids in which the resin cannot penetrate remain. These minute voids retain the original properties of charcoal such as hygroscopicity, heat retention, and sound absorption.

On the other hand, when the charcoal powder is hardened with a resin, minute voids are reduced. However, the material of the molded product is a highly heat-treated carbon crystal, and therefore, the far-infrared effect that efficiently emits absorbed heat in the form of electromagnetic waves in a specific band is not impaired.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a diagram showing an example of manufacturing a building material according to the present invention. Naturally, the raw material of the building material according to the present invention is wood. However, charcoal used for fuel and other purposes is a certain type of wood due to the processing temperature and characteristics as the final product, such as coniferous trees such as red pine, todo pine, larch, etc. However, the present invention does not limit the raw material wood. This is because the particle density and the ignition temperature do not matter. Therefore, even wood that has not been used in the past such as thinned wood can be reprocessed and used, and when thinned wood is used, highly functional building materials can be obtained at extremely low cost.

The wood 1 is formed into a shape according to the purpose of use, and the formed product 2 is carbonized by an appropriate method to obtain a formed charcoal 3. Thereafter, the molded charcoal 3 is impregnated with resin (4), and the impregnated resin is solidified to obtain the charcoal building material 5.

FIG. 2 shows an example of a processing apparatus for impregnating the molded charcoal 3 with a resin. In this figure, 1
Reference numeral 0 is a surging tank, 12 is an injection case, 14 is a manometer, 16 is a safety bottle, and 18 is a vacuum pump. The molded charcoal 3 is put in an injection case 12, and a resin liquid (monomer) tank 20 is attached to the injection case 12.

The resin impregnation using such a processing apparatus is performed in the following procedure. First, as the resin solution to be impregnated into the shaped charcoal 3, for example, a methyl methacrylate-methanol solution is used. A polymerization inhibitor is mixed in this methyl methacrylate-methanol solution (MMA). Further, about 0.5% of benzoyl peroxide (BPO) is added as a curing agent in order to change this MMA into a polymer.

Next, the vacuum pump 18 is operated to perform a pressure reduction process at a vacuum degree of 2 to 3 mmHg for about 1 hour, and the formed charcoal 3
The resin liquid is allowed to enter the tissue voids. After the injection process, the vacuum pump 18 is stopped and the charcoal is immersed in the solution for 1 hour under atmospheric pressure. Next, the charcoal is sealed in a metal container or wrapped with aluminum foil (not shown), transferred to a thermostat (not shown), and the impregnated resin is polymerized for a suitable time and at a suitable temperature. Let It has been found that in the case of methyl methacrylate, the expected hardness can be obtained by performing heat treatment at 70 ° C. for 48 hours.

The charcoal building material 5 obtained as a result of such treatment is
Since the polymerized polymer resin mainly containing methyl methacrylate enters the tissue voids and resists bending, tension and compression, shear collapse of the shaped charcoal 3 can be prevented.

The charcoal building material 5 molded in this way is
Since it is not damaged by normal external force, it can be used as wall surfaces, floor surfaces, ceiling panels and various blocks of buildings, and other molded products. If you use the far infrared radiation effect by heating, the most suitable usage is
It is the inner wall material of the sauna room.

When used as the inner wall material of a sauna room, the charcoal wall panel (5) can promote a sufficient sweating effect by its far infrared effect even if the room temperature is kept relatively low. In the conventional sauna room, since the sweating action is achieved in a shorter time, the temperature inside the sauna room is often set to a high temperature of 90 to 120 ° C. However, such an abnormally high temperature is not healthy for the human body. In order to promote the sweating effect, it is desirable to give a heating effect to the human tissue at a lower temperature. Charcoal wall material with far-infrared effect emits electromagnetic waves in a specific area in response to absorbed heat and promotes sweating at lower temperatures.

Further, charcoal has an excellent effect of shielding electromagnetic waves under normal temperature due to its carbon crystals.
Therefore, when such a charcoal inner wall material is used, it is possible to protect the indoor space from various electromagnetic waves that cannot be avoided in the modern environment. Therefore, for example, in a wide range of fields such as schools, hospitals, temples, and general houses, it is possible to achieve mental stability by shielding electromagnetic waves. This is because it has been known in recent reports that electromagnetic waves such as broadcast radio waves unconsciously affect the human body and cause mental instability, especially for residents living near high-voltage lines.

The charcoal wall material is excellent in hygroscopicity, soundproofing and heat retention since it does not lose the original tissue void of charcoal. If you arrange a breathable decorative base (fabric) on the surface of the charcoal wall material,
You can avoid the black color peculiar to charcoal and freely decorate the wall.

The far-infrared effect peculiar to charcoal is also obtained when the charcoal powder is solidified with resin.
For example, when charcoal powder is molded into a predetermined shape with a thermoplastic resin. In this case, the function of hygroscopicity caused by the original microscopic voids of wood deteriorates and the heat retaining property is lost to some extent. However, the far infrared ray effect and the electromagnetic wave shielding effect are not impaired, and the shape can be arbitrarily designed and produced.

The range of application of this charcoal is the so-called "building material".
Not limited to. For example, in greenhouse cultivation in cold regions, heating costs after autumn are significant. However, if the outer circumference of the cultivating garden is protected with a block (or panel material) that uses this resin solid charcoal, the far infrared effect makes it possible to reliably maintain the growth of plants even if the temperature inside the house is set lower than before. It is possible to reliably prevent cold damage and reduce heating costs in winter.

In addition, the far infrared rays release the electromagnetic waves from the human body and block the radio waves invading from the outside environment to relax the mind and body. Therefore, for example, when it is used as an inner wall panel of a school, a hospital, a temple, or a general house, it becomes possible to create a comfortable environmental space. Also, as long as it retains hygroscopicity, this charcoal molded product may be applied to automobile handles, bicycle handles, school supplies, daily necessities and the like. The "building material" referred to in the present specification is not limited to so-called building materials such as construction and civil engineering, and includes various molded products capable of retaining their shapes.

Further, the carbon crystal has a function of purifying water as is conventionally known. Therefore, it goes without saying that the molded article according to the present invention may be used as a slope cover panel for a river embankment, a river bed block, or an ocean embankment material.

The surface of this charcoal panel can be subjected to an appropriate treatment, for example, a nonwoven fabric can be wound or a waterproof resin can be coated. In this case, the surface treatment impairs some functions, but allows other functionalities to be obtained. For example, if the surface is coated with a waterproof resin, the function of hygroscopicity is lost, but the waterproofness can be increased without impairing other functions, and it can be applied in each field where waterproofness is required. . When a non-woven fabric is applied, the freedom of design and decoration of the panel can be improved without particularly impairing its function.

[0026]

As described above, according to the present invention, it is possible to improve the rigidity of the charcoal used for the building material and to exhibit various charcoal-specific functions within the applicable range.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of manufacturing a building material according to the present invention.

FIG. 2 is a diagram showing an example of a resin impregnation apparatus for charcoal according to the present invention.

[Explanation of symbols]

 1 Wood 2 Molded Product 3 Molded Charcoal 5 Charcoal Building Material 10 Surging Tank 12 Injection Case 14 Manometer 16 Safety Bottle 18 Vacuum Pump 20 Resin Liquid Tank

Claims (2)

[Claims] 1. A building material, characterized in that while a wood molded into a predetermined shape is carbonized, a resin material is injected into a void portion of the composition void of the charcoal into which a liquid resin can be injected and solidified. 2. A building material characterized in that charcoal powder is molded into a predetermined shape with a thermoplastic resin.