JPS62117701A - Wood brick and manufacture thereof - 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 [Technical Field 1] The present invention relates to wooden bricks used to form road surfaces etc. by laying them side by side on the ground.

[Background technology] Wooden bricks are used, for example, by laying them side by side with the lower part buried in the ground, and since wood bricks are made of wood, they have moderate cushioning properties, and they do not have clay. It has advantages such as superior walkability compared to baked and hardened bricks, and is being replaced by clay bricks in some areas.

However, although this brick has these advantages because it is made of wood, it is prone to cracking due to shrinkage when the wood brick dries and the moisture content in the wood brick decreases.
In addition, wooden bricks made of wood are organic and are susceptible to corrosion, and furthermore, they have the problem of being eaten by termites and other insects, causing their structure to become crumbly, reducing their durability. . Conventionally, these problems have been dealt with by applying coal tar to the upright bricks, but coal tar cannot sufficiently prevent these problems, and the wooden bricks have to be replaced in a short period of time. It was something I had to do.

[Object of the Invention] The present invention has been made in view of the above points, and provides a highly durable wood that can reliably prevent cracking due to drying, corrosion, and insect damage. The purpose of this invention is to provide a manufacturing method.

[Disclosure 1 of the Invention The wood timber according to the present invention is characterized in that a brick body made of wood is treated with a polyhydric alcohol, a preservative treatment agent, and an ant and insect repellent treatment agent. The method for producing a wooden brick according to the present invention is characterized by impregnating a brick body made of wood with a polyhydric alcohol and treating the brick body with an antiseptic treatment agent and an anti-termite and insect repellent treatment agent. The present invention will be described in detail below.

Although the brick body 1 can be formed using any wood, it is preferable to use thinned wood such as cedar or cypress. Thinning wood cannot be used for general construction because it is not fully grown wood, so it is discarded 11! Therefore, it is preferable to use thinned wood from the viewpoint of effective use of resources and availability at low cost. Further, the brick body 1 is formed into a regular hexagonal column shape as shown in FIG. To give an example of its dimensions, the height h is 50111Ql,
It is preferable that the length of one piece of the hexagonal surface serving as the upper or lower surface of the brick body 1 is about 60 mm, and that the cutting process is performed so that the growth rings 2 appear on the hexagonal surface.

The polyhydric alcohol to be treated on the brick body 1 is used to prevent the brick body 1 made of wood from cracking, and polyhydric alcohols and derivatives thereof can be used. Examples of polyhydric alcohols suitable for use in the present invention include polyethylene glycol, polyethylene glycol monomethacrylate, polyethylene glycol diisocyanate, polypropylene glycol, and polypropylene glycol methacrylate. brick body 1
The polyhydric alcohol is impregnated with this polyhydric alcohol to prevent cracking, but the polyhydric alcohol has hydrophilic properties, and the polyhydric alcohol combines with water in the resin body 1 to form a resin. The brick body 1 is made to retain moisture in the brick body 1 to prevent the brick body 1 from becoming dry, and even if the moisture content of the brick body 1 decreases due to drying, polyhydric alcohols will not easily vaporize. The polyhydric alcohols remain inside, and can prevent cracks from occurring due to shrinkage due to drying. Note that this effect can be further enhanced by adding a hydrophilic polyurethane resin. This is due to the fact that the polyhydric alcohol and the wood are more firmly bonded by the incyanate group of the polyurethane resin.

The brick body 1 is treated with a preservative in addition to polyhydric alcohols. As the preservative, any known preservative can be used singly or in combination; for example, as an organotin-based preservative, tri-n-butyltin 7
talate, bistributyltin oxide, and tributyltinsul7amate; hydroxylamine-based products include N-nitrone-N-cyclohexyl hydroxylamine aluminum salt and N-nitrone-N-cyclohexyl hydroxylamine carivum salt; Examples include sodium N-methyldithiocarbamate, N-methyl-N-hydroxy
Potassium methyldithiocarbamate is phenol-based, such as 2,4.6-dolibromo7er/-ol, 2,
4.6-Trichlorophenol, bisphenyl (2-chlorophenyl)-1 imidazolylmethane, 2,5-dichloro-4-bromophenol, ortho phenylphenol, parachloro phenyldioid methyl sulfone as iodopropargyl type Parachlor 7enyl-3-iodopropargyl formal is used as the sulfone type, and N,N-tumethyl-N'-phenyl-(N-fluorodichloromethylthio)-sul 7anide, N-fluoro dichloromethylthio 7talimide is used as the sulfone type. In addition, tetrahydro-3,5-tumethyl-2-H-1,3,5-)ryanone-2-thousand, 2-heptadecyl-1,5,5,6
-titrahydride + 17-4.4゜6-drimethylbiliminone, orun-chloranili7 dichlortriacin, dichlorbenzoxacilone, 2-mercaptobenzothiazole sodium, 8-okireki/phosphorus sulfate, sodium propionate, Dithio-2,2-bis(benzmethylamide), 5,5'-cyclo-2,2'-dihydroxy nophenylmethane, nooid methyl-paratolylsul7one, 2.4+5+6-? ) Lachlorin 7-talonitrile, dodecylguaninone hydrochloride, etc. can also be used.

Furthermore, Reno 1 body 1 is treated with an ant- and insect-repellent treatment agent. Any known termite and insect repellent treatment agent can be used singly or in combination of multiple types, and most of the agents currently known to have termite control efficacy can be used. can be applied to the present invention as a form dispersible in water. Among them, chlordane, an organochlorine drug, namely 1, 2, 4, 5, 6, 7,
8,8-octachloro-2,3-3a*4,7,7a-
Hexahydro-4,7-methano-IH-indene, 1,
2,3,4゜5.6,7.8.8-7 Nakuro 2.3
,3a,4.7,7a-hexahydro-4,7-meta/
-IH-inchin, 4.5.6,7,8.8-hexachloro-3at4,7,7a-tetrahydro-
4,7-methanoindene, 1,4,5゜7.8.8-hebutachloro-3a, 4,7.7a-tetrahydro-4,
7-/ri/-IH-indenes and mixtures of these M green compounds are preferred due to their persistence. However, organic phosphorus compounds can also be used effectively. To enumerate the termiticides that can be applied in the present invention, in addition to the organic chlorine-based chemicals such as chlordane, organic phosphorus-based compounds include o,o-diethyl-o-3,5,6-)dichloro-
2-Birituru phosphorothioate, 2-chloro-1-
(2,4,5-trichloro7yonyl)vinyl-0tO-
Dimethyl phosphate, O+O-methyl(3-methyl-4-nitrophenyl) phosphorothiony), (2-isopropyl-4-methylpyrimidyl-6)-o,o-noethylthiophos 7ate, o,o-methyl-〇-[3
-Methyl-4-(methylthio)phenyl J thiophosphate, o, 2.4-7 chlorophenyl-〇-ethyl S-
propylphosphorodithioone-), 0tO-noethyl-(α-cyanopennolideneamide-7)phosphorothiony), o+o-tmethyl-3,5,6-)lychloro-2-birithuphosphorothiony), o, S-methyl-N-acetylphosphoroamidothioate 0.0-noethyl-o-(3-oxo-2-phenyl-2H-pignon-6-yl)phosphorothiony), 090-dimethyl-P-cyanophenylthiophosphate , diethyldichlorophenylthiophosphate, dimethyl-2,2
,2-)lichlor-1-hydroxyethylphosphonate, 2-chloro-1-(2,4-dichlorophenyl)vinylnoethylphos-7ethyl, diethyl-3-(2-ethylthionythyl)phosphorothiolothio S-2-(isopropylthio)ethyl phosphorothiolothionate, 5-((6-chloro-2-oxo-3-benzoxazolyl)methyl 1-noethyl phosphorothiolothionate, 2°4-no Examples include chlorophenylethylphenyl phosphorothionate.Carbamate drugs include 1-7thyl-N-methylcarbamate, 2-isopropoxyphenyl-N-methylcarbamate, 3,4-dimethyl7enyl-N -Methyl carbamate, methatolyl-N-methyl carbamate, 2-se
e-butylphenyl-N-methylcarbamate, 3,5
-xylyl-N-methylcarpame), 1,3-bis(carbamoylthio)-2-(N,N-dimethylamy/
) propane hydrochloride, 0-cumeryl methyl carbamate, etc. Further, as a pyrethroid drug, 3-phenoxybenzyl-dl-cis/trans-3-(2.

2-Nobromvinyl)-2,2-dimethylcyclopropane-1-carboxylade, di-3-allyl-2.
Methyl-4oxo-2-cyclopentenyl-dl-cis/trans-chrysanthemate, 5-benzyl-3-7
Lyrumethyl-d1-cis/trans-chrysanthemate, (s)-ff-cyano-3-phenoxybentrucis (IR-3R) 2,2-methyl-3-(2,2-nobromvinyl)cyclopropanecarboxylate) , (1
, 3゜4.5,6,7-hexahydro-1,3-dioxo-2-isoindolyl)methyl-di-cis/trans-chrysannamer), 3-7e/xybenzyl-d-
cis/trans-chrysanthemate, dl2-(2-7
Examples include 7-lyl)-4-hydroxy-3-methyl-2-cyclopenten-1-one ester-dl-cis/trans-chrysanthemamo7carpoxylate. In addition, non-Wi-based drugs include cupric fluoride, cupric chloride, sodium fluoride, magnesium silicofluoride, sodium silicofluoride, zinc silicofluoride, potassium silicofluoride, calcium silicofluoride, and magnesium fluoride. , borax, boric acid, etc. In addition, monochloronaphthalene, methylnaphthalene, copper naphthenate, zinc naphthenate, and other substances having an anti-termite effect can be mentioned.

When treating the brick body 1 made of wood with the above-mentioned materials, the present invention does not require the use of coal tar or the like, so the brick body 1 can be colored in any desired color. Any pigment or dye can be used for coloring. For example, white pigments include zinc white, lead white, and lithopone.
, methane white, basic sulfate, and antimony oxide; black ones include carbon black, lamp black, acetylene black, Ipoly Plaque, bone black, and graphite; red ones include Komyotan, vermilion, and cadmium. Red, 7-inch red, red lake, yellow ones include yellow lead, zinc yellow, cadmium yellow, yellow iron oxide,
Yellow lake, blue ones include navy blue, ultramarine blue, cobalt blue, Brunswick blue, seven talocyanine pigments, and green ones include chrome green, chromium oxide, emerald green, zinc edge, guiné green, and brown. Examples include iron oxide, Bengara, ocher, shaker, and amber.
Metal pigments include aluminum powder, bronze powder, zinc powder,
Lead powder can be used respectively. In addition, as a dye, nonitrone resorcinol is used as a nitroso dye (edge thread),
Naphthol Green B, picric acid and Aurantia as nitro dyes (* series), methyl orange (monoazo dye) and Noamine Flu 2B (noazo dye) as azo dyes, chrysophenine G as stilbene dyes (<* series), pyrazolone dye ( Taldrazine is used as the thiazole dye (green-yellow, neck thread), Thio7 Lavin T and Chloramine Yellow are used as the carbonium dye, diphenylmethane and triphenylmethane are used as the carbonium dye, and indoamine and indo7 x / - / as the quinone imine dye. However, quinophthalone can be used as quinoline dye and L, cyanine can be used as acrinone dye, acridine dilo and tripa 7 lavin can be used as anthraquinone dye, mordant anthraquinone and acidic 72 traquinone can be used as anthraquinone dye, and Inkbread and Shiba Blue 2B can be used as indigoid dye. .

Therefore, the brick body 1 made of wood is treated with the polyhydric alcohol, a preservative, an anti-termite and insect repellent, and a coloring agent if necessary. The brick body 1 may be impregnated with an antiseptic treatment agent, an anti-termite and insect repellent treatment agent, and a coloring agent, or may be applied by impregnating the brick body 1 or by applying it by smearing or spraying. When treating wooden bricks by impregnating them with polyhydric alcohols, preservatives, termite and insect repellents, or coloring agents, these may be impregnated into the brick body 1 individually, but these may be impregnated into the brick body 1 individually. It is desirable to prepare a treatment liquid such as an aqueous solution by mixing and impregnate the brick body 1 with this treatment liquid in terms of the number of work steps and processing time.

When treating the brick body 1 by impregnating it with a treatment solution prepared by blending polyhydric alcohols, preservatives, termite and insect repellents, and coloring agents, the polyhydric alcohol should be added prior to this impregnation. It is preferable to immerse the brick body 1 in water in advance in order to improve its permeability. That is, by immersing the brick body 1 in water for about one day to increase the moisture content of the brick body 1, the polyhydric alcohols can satisfactorily permeate into the brick body 1 while displacing the moisture within the brick body 1. body 1
This allows for uniform and deep impregnation. It is preferable to immerse the brick body 1 in water in this way so that the water content of the brick body 1 becomes 30% or more. When moisture infiltration into the brick body 1 is to be carried out in a short period of time, a reduced pressure injection method can be used. Of course, if the moisture content of the brick body 1 is originally 30% or more, such underwater immersion treatment can be omitted.

The process of impregnating the brick body 1 with the treatment liquid can be carried out by dipping. That is, the brick body 1 subjected to the underwater immersion treatment as described above.
After lightly draining the water, the brick body 1 is immersed in a treatment liquid for one week or more, and the treatment liquid is permeated into the brick body 1 to impregnate it. At this time, it is preferable to make sure that the entire brick body 1 is always submerged below the surface of the treatment liquid, and to stir the treatment liquid from time to time in order to uniformly impregnate the brick body 1 with the treatment liquid. . The brick body 1 that has absorbed the treatment liquid can be used after being dried in the shade for one week or more. Although this immersion treatment method is advantageous in that it does not require a large-scale installation, it requires a long time of one week or more to impregnate the brick body 1 with the treatment solution, which poses problems in terms of production efficiency. will have the following.

Therefore, in this case, the brick body 1 can be impregnated with the treatment liquid in a short time using a reduced pressure injection method or a pressurized injection method. In the reduced pressure injection method, the brick body 1 that has been immersed in water is lightly drained, then placed in a dosing can to create a reduced pressure state, and then the treatment liquid is introduced into the dosing can so that the brick body 1 in the dosing can is immersed in the treatment liquid. After the processing liquid required to sink below the liquid level is introduced, the pressure inside the chemical injection can is returned to normal pressure, and after a predetermined period of time, the processing liquid is collected, and then the pressure is once reduced to a reduced pressure state. By returning the pressure to normal pressure and taking out the brick body 1 from the inside of the medicine can, the treatment liquid can be injected into the brick body 1 under reduced pressure to impregnate it. The brick body 1 that has absorbed the treatment liquid in this way can be dried in the shade for one week or more, and then it can be used.

In addition, in the pressurized injection method, the brick body 1 that has been immersed in water is placed in a dosing can while lightly draining the water to create a reduced pressure state, and then the treatment liquid is introduced into the dosing can so that the brick body 1 in the dosing can is exposed to the treatment liquid. After the processing liquid required to sink below the liquid level has been introduced, the pressure inside the medicine can is returned to normal pressure, and then compressed air is introduced into the medicine can to increase the pressure and maintain the rear pressure for a predetermined period of time. By returning the brick body 1 to collect the treatment liquid and then taking out the brick body 1 from the medicine can, the treatment liquid can be injected into the brick body 1 under pressure to impregnate it. The brick body 1 that has absorbed the treatment liquid in this way can be dried in the shade for one week or more, and then it can be used.

Here, the amount of polyhydric alcohols, preservatives, and anti-termite insecticides that are applied to the brick body 1 is determined by the amount of wood species of the brick body 1, polyhydric alcohols, preservatives, and anti-termite insecticides. Although it varies depending on the type, generally 20 to 70 parts of polyhydric alcohol is added to 100 parts by weight of the brick body.
parts by weight, 1 to 0.5 parts by weight of the preservative, 1 part by weight of the anti-termite and insect repellent treatment, and treating the brick body 1 with the polyhydric alcohol, the preservative, and the anti-termite and insect repellent treatment as described above. The wooden bricks A obtained by
It is used to form road surfaces such as pavements, and at this time, the third
As shown in the figure, since the planar shape of the wood grain fA is a regular hexagon, the wood grain 7yA is different from other wood grains ff on its large surface.
This means that you can connect wooden bricks A in six directions around one wooden brick A, and you can freely arrange the wooden bricks A according to the shape of the area where the wooden bricks 7yA are laid. You can do this once, or you can arrange the wood shins 7yA in a free shape. When constructing wooden bricks A in this way, the gaps between adjacent wooden bricks will be filled with joint compound 4, but the joint compound 4 may be silicone resin, urethane resin, or 7-unit urethane resin. , tar epoxy resin, rubber, sand, etc. can be used. To explain this joint construction using an example, a primer containing urethane resin as the main component is applied to the side of the brick A in advance and dried, and after the real brick A is lined up at a predetermined position on the ground, it is Joints are formed by mixing tarturethane resin liquid A (curing agent) and liquid B (base resin) at a weight ratio of 1:2, pouring this into the gap between wood shingles A, and drying and hardening. Just do it.

In the wood brick A constructed on the ground in this way, since the polyhydric alcohol neck is impregnated inside, the hydrophilic polyhydric alcohols combine with water and the water scatters from the wood brick 7yA. This will prevent the wood brick 7yA from drying out, and even if the brick A dries, the polyhydric alcohols will remain in the wood brick A, causing the wood brick A to shrink due to drying. This means that the occurrence of cracks in the wooden brick A can be reduced. * Wood grain and fA are exposed outdoors to sunlight, wind and rain, and because they are organic materials, they are often affected by mold and fungi. This means that brick A can be prevented from being corroded, and brick A can be used for a long period of time without having to be removed. Furthermore, the wooden brick A, which is often used with its lower part buried in the ground, is eaten away by insects such as termites, but this can be prevented by using an anti-termite and insect repellent treatment applied to the wooden brick A. This means that the wooden bricks A can be used for a long period of time without having to be replaced.

The wooden brick A according to the present invention is mainly used with its lower part buried in the ground as described above, but it can also be used as a wooden brick fA which has a decorative effect such as the annual rings 3 appearing beautifully in the center of the wood end surface.
In this case, it can also be used as a flooring material for houses, pavilions, etc. Furthermore, it can be used as an indoor or outdoor wall material, and in this case, by varying the thickness of the brick A, it is possible to finish the wall with unevenness.

Next, the present invention will be explained by examples.

(Ran and Toyo Wood Preservation Co., Ltd., a solubilized wood preservative insect repellent and termite repellent [
Alisys 20SJ (10% organic iodine preservative and antifungal agent,
Organochlorine termite repellent 40%, fragrance 0.05%, cationic and anionic surfactant 30%, hydrocarbon solvent 1
Take 5% by weight of polyethylene glycol (containing 9.95%), 47°5% by weight of polyethylene glycol (I 200), and 47.5% by weight of water, stir well, and then add water-soluble A treatment liquid 13I was prepared by adding 0.6% by weight of a pigment "aqueous colorant" (blue color containing 7 thalocyanine as a main component).

On the other hand, the brick body was made of thinned cedar wood and formed into a hexagonal prism shape with the dimensions b in Fig. 1 set to 501 m and 4 to 60++ m.

First, the brick body was immersed in water with one mouth open to adjust the water content of the brick body to 40 to 50%. This brick body was taken out of the water, lightly drained of water, and then immersed in the above treatment solution for one week. After being immersed for one week, the brick body was taken out and dried in the shade for another week to produce a real brick.

In addition, when preparing a treatment liquid by adding hydrophilic polyurethane resin, add 5% by weight of "ALISYS 20S", 42.5% by weight of polyethylene glycol ($200), and 42% of water.
．． 5% by weight of the hydrophilic polyurethane and 10% by weight of the hydrophilic polyurethane.

Using the same brick body and treatment agent as in Example 1, the brick body was first immersed in water for one day to bring the moisture content of the brick body to 40~40.
After adjusting to 50% and lightly draining the water, the brick body was placed in a medicine can, and the pressure was first reduced at 600LIIIHg for 3 minutes. Next, this treatment liquid under reduced pressure is introduced into the dosing can, and after introducing the processing liquid until the material in the dosing can is sufficiently submerged to the liquid level F, the pressure inside the dosing can is returned to normal pressure, and the After returning the pressure to normal pressure for 5 minutes, collect the processing solution and repeat the process for 6 minutes.
001Il! The pressure was reduced to 11 Hg for 3 minutes. After this, return to normal pressure, take out the brick body from the medicine can, and
Wooden bricks were created by drying them in the shade for a week.

Using the same brick body and treatment agent as in Example 1, the brick body was first immersed in water for one day to bring the moisture content of the brick body to 40~40.
After adjusting to 50% and lightly draining the water, the brick body was placed in a medicine can, and the pressure was first reduced to 600 (to) Hg for 3 minutes. Next, introduce the processing liquid under reduced pressure into the dosing can, and after introducing the processing liquid until the material in the dosing can is sufficiently submerged below the liquid surface, the pressure inside the dosing can is returned to normal pressure, and then pouring Compressed air was introduced into the medicine can, and pressurization was performed for 5 minutes at atmospheric pressure plus 1 atm. Thereafter, the pressure was returned to normal pressure, the treatment liquid was collected, and the pressure was further reduced to 600+ omHg for 3 minutes, and then the pressure was returned to normal pressure, the brick body was taken out from inside the medicine can, and a wooden brick was made by drying it in the shade for another week.

A treatment solution was prepared by mixing polyethylene glycol in a ratio of 1:1, and the brick body was dipped and impregnated using this treatment solution in the same manner as in Example 1. After the brick body was sufficiently dried, "Color 7 Lysis" manufactured by Wood Preservation Co., Ltd. (organic iodine preservative and fungicide 0.5%, organic phosphorus termite repellent 0.5%, fragrance 0.1%, paraffin 1) .0%, hydrocarbon solvent 87.9%, alkyd colored tree lIw10
% content) at a coating amount of 0.2 f/m 2 and dried to prepare wooden bricks.

Various tests were conducted on the wooden bricks obtained in Examples 1 to 4 above, and the results are shown in Tables 1 to 3. For comparison, tests were conducted on wooden bricks that were not treated with the treatment solution. Here, Table 1 shows the results of measuring the permeability of the treatment solution into this brick, and the average permeation amount in Table 1 is calculated by calculating the permeation amount based on the weight increase of the wooden brick before and after treatment. The average penetration amount from the end of the brick is the measurement of the penetration depth of the colorant in the cross section of the brick. Table 2 shows the results of the durability test. A sandbox was created outdoors, wooden bricks were buried with only the top left intact, and the wooden bricks were placed under conditions where they were exposed to sunlight, rain, dew, and wind. In addition, we observed whether or not cracking occurred and the degree of cracking. The tq constant is - when the crack 4 on the surface of the wood grain cannot be visually confirmed and the length is less than IC11, as shown in Figure 4 (a).
As shown in Figure 4 (b), when the length of crack 4 is less than 1 m + e and the length is 1 to 3 cm, it is 10, and as shown in Figure 4 (c), when the width of crack 4 is 1 to 31, the length is 10. When it is 3 to 5 cm, it is 廿,
As shown in FIG. 4(d), when the width of the crack 4 exceeds 31 and the length reaches beyond the medium heat of the wooden brick A, it is indicated by Ilf-. Table 3 shows the results of the bleaching wave test.
Wooden bricks were left exposed outdoors for a predetermined period of time, compared with wood bricks stored indoors, and visually observed and evaluated. In the evaluation, samples with almost no discoloration were marked with a mark, and those with visible discoloration were marked with a -.

Table 4 shows the results of the wood preservative efficacy test conducted based on JIS A 9302. 1) and the reduced pressure injection method (A-2, B-2) in Example 2. In Table 4, Table 1, an efficacy value of 80 or higher is considered a pass.

The results in Table 1 confirm that the pressurized injection method of Example 3 was the best in permeating the treatment liquid into the wood bricks, followed by the reduced pressure injection method. *As shown in Table 2, the comparative wood grains that were not treated with the treatment solution had large cracks in a short period of time, whereas the wood grains treated with the treatment solution had fewer cracks. It was confirmed that it could be done, especially in Example 3.
When the treatment liquid was impregnated using the pressure injection method, almost no cracking occurred. Furthermore, as shown in Table 3, it was confirmed that discoloration occurred significantly in a short period of time in the wooden bricks of the comparative example that were not treated with the treatment liquid, whereas fading could be reduced in the wooden bricks treated with the treatment liquid.
In particular, when the treatment liquid was impregnated by the pressure injection method of Example 3, almost no fading occurred. Furthermore, as shown in Table 4, all the samples treated with the treatment liquid passed the test in terms of antiseptic efficacy, but it is confirmed that those with a larger amount of treatment liquid impregnated exhibit higher efficacy values.

In addition, in order to investigate the relationship between the amount of polyhydric alcohol impregnated into the brick and the prevention of side sagging, the brick body was immersed in a 100% solution of polyethylene glycol, and the increase in the weight of the brick body was determined by the following equation. The glycol content was calculated and the relationship between the polyethylene glycol content and the effect of preventing wood bricks from cracking was evaluated.

Content rate = (increase weight/brick weight) x io.

The results are qualitatively shown in Figure 7 in Figure 5. #45 As seen in the graph, polyethylene glycol is 20
%, the anti-cracking effect increases proportionally, and when the content of polyethylene glycol exceeds 70%, no improvement in the anti-cracking effect is observed.

Therefore, it is confirmed that the content of polyethylene glycol is 20% to 70% to obtain the necessary and sufficient effect of preventing cracking.

[Effect of the invention 1 As described above, the wooden brick according to the present invention is a brick body made of wood that has been treated with a polyhydric alcohol, a preservative, and an anti-termite and insect repellent. When alcohol combines with water, it can prevent the water from scattering from the wooden bricks and drying out the wood, and even if the wooden bricks dry, polyhydric alcohols can prevent the wood from remaining inside. death,
It can prevent the wooden brick from shrinking due to drying and reduce the occurrence of cracks in the brick A.
In addition, the preservative treatment applied to the bricks can prevent the wooden bricks from being corroded, and the anti-termite and insect repellent treatment applied to the bricks can prevent the wooden bricks from being eaten away by termites, etc. It can be used for a long period of time without the need to replace the wood. Furthermore, the method for manufacturing wood bricks according to the present invention involves impregnating a brick body made of wood with a polyhydric alcohol and treating the brick body with a preservative and an anti-termite treatment agent. In addition, polyhydric alcohols are contained in the wood bricks in an impregnated state, and the binding effect of polyhydric alcohols with water can effectively prevent the wood bricks from drying out, thereby preventing cracks in the wood bricks. Prevention can be ensured.

[Brief explanation of drawings]

Figures 1 (a) and (b) are a plan view and a front view of the brick body of the wooden brick, m2 diagram is a sectional view of the actual brick in its construction state, Figure 3 is a reduced plan view showing the arrangement of the wooden bricks, and Figure 4 Figures (a) (b)
(c) and (d) are plan views showing the degree of occurrence of cracking during durability tests of wooden bricks, respectively, and Figure 5 is a graph showing the relationship between the amount of polyethylene glycol treated and the effect of preventing cracking in this brick. Yes, 1 is a brick body. Agent Patent Attorney Ishi 1) Ai Figure 7 1 (G) (b) w! ! Figure 2 Figure 3 A Figure 4 (a) (b) (C) (d) Figure 5 Processing amount (%)

Claims (7)

[Claims] (1) A wood brick characterized in that a brick body made of wood is treated with a polyhydric alcohol, a preservative, and an ant and insect repellent. (2) The wooden brick according to claim 1, wherein the brick body is formed in the shape of a regular hexagonal column. (3) A method for producing wood bricks, which comprises impregnating a brick body made of wood with a polyhydric alcohol and treating the brick body with a preservative and an ant- and insect-repellent treatment agent. (4) Claim 3, characterized in that the treatment is carried out by impregnating the brick body with an antiseptic treatment agent and an anti-termite and insect repellent treatment agent.
Method for manufacturing wooden bricks as described in Section 1. (5) Manufacture of the wooden brick according to claim 3 or 4, characterized in that the brick body is impregnated with the polyhydric alcohol by immersing the brick body in a treatment liquid containing the polyhydric alcohol. Method. (6) A wooden brick according to claim 3 or 4, characterized in that a treatment liquid containing a polyhydric alcohol is injected into the brick body under reduced pressure to impregnate the brick body with the polyhydric alcohol. Production method. (7) A wooden brick according to claim 3 or 4, characterized in that a treatment liquid containing a polyhydric alcohol is injected into the brick body under pressure to impregnate the brick body with the polyhydric alcohol. manufacturing method.