JPH08336811A - Manufacture of treated timber treated for preventing rot and insect damage - Google Patents

Abstract

PURPOSE: To prevent rot and insect damage of a timber so as to eliminate expelling treatment after construction is completed by a method wherein the timber is impregnated with an antiseptic insecticidal agent under reduced pressure, moisture and solution are removed, further it is impregnated with a synthetic resin under reduced pressure, the synthetic resin is reacted and cured, the antiseptic insecticidal agent is confined so as to reinforce by impregnation of resin. CONSTITUTION: After a timber is dried so as to remove moisture, a solution in which an antiseptic and an insecticide are dissolved under reduced pressure is injected and the drugs are made to permeate the timber up to the inside under a pressured state. The timber is dried again, the solution is removed, and a synthetic resin is injected under reduced pressure so as to permeate up to the inside in a pressured state, the timber is heated by a hot press or in a room of high temperature, and the synthetic resin is reacted and cured. Thus, the antiseptic insecticidal agent is confined in the timber. After the timber is dried, the synthetic resin having the antiseptic and the insecticide previously dissolved under reduced pressure is injected under reduced pressure so as to permeate up to the inside in a pressured state, it is heated by the hot press or in the room of high temperature so as to make the synthetic resin reacted and cured. Thus, the antiseptic insecticidal agent is confined in the timber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method in which a preservative insecticide is impregnated and injected into the interior of wood, and then synthetic resin is further impregnated and injected, or synthetic resin in which a preservative insecticide is dissolved or mixed is impregnated and injected. By reacting and curing the resin,
By preventing the antiseptic / insecticide from being washed away, it is possible to prevent wood corrosion and insect damage for a long period of time. In addition, the corrosive bacteria and pests contained in the wood before processing can be simultaneously killed. Due to these facts, resin-impregnated reinforced wood can be obtained which is also used for wood that easily rots and is easily damaged by insects, and whose strength is increased by the effect of synthetic resin impregnation even with soft materials.

[0002]

[Prior art]

1. The conventional antiseptic and insect repellent treatment is to inject the inside of the wood by depressurizing under pressure such as CCA, or apply it to the surface of the wood such as cresol, and use a foaming agent when insect damage occurs. The method of covering the surface of wood and exterminating it by a method such as suffocation is generally well known. 2. However, these methods lose the antiseptic and insecticidal effect even if the method is injected under reduced pressure and pressure because the chemicals are washed away from the wood due to changes in humidity and temperature. Moreover, if it spills, highly toxic drugs may spread around it,
The impact on the environment is immeasurable. 3. In addition, the quality of the wood applied to the surface was not constant due to peeling of the paint film, uneven coating, etc., and when planing, cutting, mortise processing, etc. were performed at construction sites, etc., cracking etc. occurred. In this case, the uncoated part is exposed and the effect is lost. 4. Therefore, in the conventional method, reprocessing must be performed every several years. When reprocessing, all drugs are highly toxic and must be carried out by a person with specialized knowledge.

[0003]

DISCLOSURE OF THE INVENTION The present invention, except for the conventional drawbacks, does not change the shape for a long period of time and does not impair the aesthetic appearance by curing synthetic resin with an antiseptic insecticide impregnated and injected into wood. It is a processed wood that was invented as an economical resin-impregnated reinforced wood that is highly safe and does not require reprocessing after use.

[0004]

The present invention has invented a manufacturing method in consideration of such a point. 1. After drying the wood and removing water, under reduced pressure,
Inject a solution of preservative and insect repellent dissolved or mixed,
Further, the chemical was penetrated into the wood under pressure. This wood is dried again to remove the water or solvent in which the chemicals have been dissolved or mixed, and synthetic resin is injected under reduced pressure and allowed to penetrate into the interior under pressure, and then heated in a hot press or hot room. Then, the synthetic resin was cured by reaction. By this means, the antiseptic / insecticide was trapped inside the wood. 2. After drying the wood and removing water, under reduced pressure,
A synthetic resin in which a preservative and an insect repellent were dissolved or mixed in advance was injected under reduced pressure, permeated into the interior under pressure, and heated in a hot press or a high temperature chamber to cure the synthetic resin by reaction. By this means, the antiseptic / insecticide was trapped inside the wood.

[0005]

[Work]

1. According to claim 1 of the present invention, by placing naturally dried wood or artificially dried wood in the decompression / pressurization device and decompressing it, water in the wood and air in the conduit and temporary conduit are further removed. , Creates a space inside the wood. The antiseptic / insecticide is injected into this space and further pressurized to fill the deep part of the wood with the medicine, and after the injection is completed, it is taken out and dried to remove the solvent in which the medicine is dissolved. This action has the same effect as coating the conduit and the temporary conduit with a chemical. The wood in which this conduit and the temporary conduit are coated with a chemical is further decompressed in a decompression / pressurization device, air is removed to obtain a space inside the wood, and synthetic resin is injected to further deepen the wood by injecting pressure. Impregnate with synthetic resin. The impregnated wood is heated to cause a polymerization reaction and curing. This technique is suitable when using a water-soluble drug. 2. According to the second aspect of the present invention, by placing naturally dried wood or artificially dried wood in the decompression / pressurization device and decompressing it, water in the wood and air in the conduit and temporary conduit are further removed. , Creates a space inside the wood. A solution prepared by dissolving or mixing an oil-based antiseptic / insecticide in a synthetic resin is poured into this space, and further pressurized, so that the solution is pushed deep into the wood. By this action, the inside of the conduit and the temporary conduit is filled with the solution. By heating the wood impregnated with this solution, the synthetic resin is polymerized and cured to seal the antiseptic / insecticide in the wood.

[0006]

【Example】

Example 1. Among the preservatives commercially available as preservatives, the main chemical MEP (O, O-dimethyl-O- (3-methyl-4
-Nitrofer) thiophosphate) in water,
A 20% aqueous solution is obtained, and cedar is used as a base material by artificial drying 1
A material having a water content of 5% is used. This cedar is inserted into a decompression / pressurization device to create an airtight state. The depressurizing / pressurizing device is evacuated to create a depressurized state of 20 mg / cm ^{2 in} the device, and residual moisture and air in the wood are exhausted for 2 hours. A 20% aqueous solution of an antiseptic / insecticide is allowed to flow into this apparatus, the wood is immersed therein, and left standing for 20 minutes, and then the aqueous solution is fed at a pressure of 25 kg / cm ² for 4 hours to fill the space in the wood. After confirming that the specific gravity of the extracted wood became 0.91-1, after drying it in a drier at 40 ° C for 48 hours and confirming that the specific gravity of the wood became 0.6, depressurize again. It is returned to the pressure device and evacuated to create a reduced pressure state of 20 mg / cm ² inside the device, and the air in the wood is exhausted for 2 hours. A resin solution containing 0.1% tert-butyl peroxybenzide as a curing accelerator mixed with polyester resin was flowed into this device, and the wood was immersed therein and left for 20 minutes, then 2
The resin solution is fed at a pressure of 5 kg / cm ² for 4 hours to fill the space in the wood. The resin-impregnated wood thus taken out was heated in a high-temperature reactor at 120 ° C. for 2 hours to cause a polyester resin impregnated in the wood to undergo a polymerization reaction and be cured.

Example 2. Commercially available antiseptic as a preservative and insecticide Xylamon main chemical Non-organic chlorine compounds are dissolved in water to obtain 20% aqueous solution. To use. This thin plate is inserted into a pressure reducing / pressurizing device to create an airtight state. Evacuate the depressurization and pressurization device and let
A reduced pressure state of mg / cm ² is created, and residual water and air in the thin plate are exhausted for 1 hour. In this device, antiseptic repellent 2
After pouring in a 0% aqueous solution and immersing the wood in it for 20 minutes,
The aqueous solution is fed for 2 hours at a pressure of 9 kg / cm ² to fill the space in the wood. The thin plate taken out was dried in a dryer at 50 ° C for 2 hours, then returned to the depressurization / pressurization device again and evacuated to create a depressurized state of 20 mg / cm ² inside the device and air in the wood for 1 hour. Exhaust. In this device,
A phenol resin methanol solution is flown in to allow the wood to be immersed therein, and after standing for 20 minutes, the resin solution is fed at a pressure of 9 kg / cm ² for 4 hours to fill the space in the wood. In removed resin impregnated sheet through the dryer at 60 ° C., the water content by preparation below 6%, for a thickness of up to 50 sheets superimposed 35 mm, the heat pressure of 70 kg / cm ² at 120 ° C. state Hung The phenolic resin impregnated in the thin plate flows out to the surface of the thin plate due to the initial temperature and pressure, the outflow surfaces come into contact with each other, and when they undergo a curing reaction, they act as an adhesive agent and form a laminated plywood with a thickness of 35 mm. Obtained.

Example 3. A commercially available oil-based xylamon main drug, an organic phosphorus compound and a carbamate compound, is dissolved in acetone to obtain a 20% solution as an antiseptic and insect repellent material. Further, 2.2. A resin solution containing 0.3% of azobisisobutylnitrile was mixed to prepare an impregnating resin. As the base material, a material was used in which pine was artificially dried to control the water content to 4% or less. This pine is inserted into a vacuum pressurizing device to create an airtight state. The pressure reducing / pressurizing device is evacuated to create a reduced pressure state of 20 mg / cm ^{2 in} the device, and residual water in the pine tree and air are exhausted for 2 hours. In this device,
The above-mentioned impregnating resin is flowed in, the wood is immersed therein, and after standing for 20 minutes, the impregnating resin is fed at a pressure of 35 kg / cm ² for 24 hours to fill the space portion in the wood. The resin impregnated wood thus taken out was heated in a high temperature reactor at 110 ° C. for 2 hours, and the impregnating resin impregnated in the wood was cured by reaction.

[0009]

INDUSTRIAL APPLICABILITY In the above examples, it is possible to obtain the processed wood in which the antiseptic / insecticide is sealed in the wood and is reinforced by the resin impregnation which is safe after use and has no risk of outflow. As a result of this invention, not only can the collapse of wooden houses due to corrosion of wood and insect damage be prevented, but since it is not necessary to carry out disinfection treatment after construction, it is possible to finish economically and economically, and the work safety of workers. The risk of damage to health by drugs can be avoided.

Claims (2)

[Claims] 1. A wood material is impregnated with a preservative and insecticide under reduced pressure to remove water and a solvent, and then synthetic resin is impregnated and injected under reduced pressure to react and cure the synthetic resin. Method for producing processed wood reinforced with resin impregnation in which insect repellents are confined to prevent the preservatives from being washed away 2. A synthetic resin in which an antiseptic / insecticide is dissolved or mixed under reduced pressure and pressure is impregnated and injected into wood, and the synthetic resin is reactively cured to confine the insecticide / preservative to prevent the antiseptic / preservative from being washed away. For producing processed wood reinforced with saturated resin impregnation