Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
  • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
  • B27K3/02—Processes; Apparatus
  • B27K3/0207—Pretreatment of wood before impregnation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
  • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
  • B27K3/16—Inorganic impregnating agents
  • B27K3/18—Compounds of alkaline earth metals
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
  • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
  • B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C

Definitions

• the present invention relates to a method for enhancing the resistance of wood in which various resistances of the wood are enhanced, and to a resistance-enhanced wood produced by the method.
• Wood is often used as a craft material for reasons of workability and ease of processing, in addition to being used as a building material in a broad sense such as pillars, fences, and building materials.
• a broad sense such as pillars, fences, and building materials.
• the following prior art can be cited as a proposal for enhancing the resistance of such general wood.
• Patent Document 1 adjusts an ant-proof coating agent having powdered charcoal, slaked lime or plaster, polyvinyl alcohol, and water for the purpose of controlling insects such as white ants, fungi and antiseptic. It is applied to building boards.
• an ant-preventive coating agent requires a plurality of raw materials, has a complicated process, and is only effective on the surface of the board because of painting.
• Patent Document 2 includes a laminated structure including a copper foil, an adhesive layer and a sheet-like base material, and a decorative layer made of a lime-containing composition in order to make the wooden board flame-retardant.
• a method has been proposed.
• such a method for making flame retardant has to form a laminate of three materials, has a complicated structure, and has no effect on the wood below the copper foil layer.
• the influence of the wood inside cannot be avoided by peeling and cracking of the copper foil.
• the present invention increases the resistance of wood, that is, antiseptic and heat resistance (flame retardant) and has an antifungal effect by a very simple manufacturing process at low cost. For the purpose.
• the method for enhancing the resistance of wood according to claim 1 according to the present invention is a method for enhancing the resistance of wood.
• Carbonization process to completely carbonize the surface of wood Next, a molding process for scraping and polishing the carbonized portion of the wood, Next, a heating process for heat-treating the wood, Then, a dipping step of immediately dipping the wood in slaked lime solution, and then a drying step of drying the wood, It is characterized by comprising.
• the method for enhancing the resistance of wood according to claim 2 according to the present invention is a method for enhancing the resistance of wood.
• Carbonization process to completely carbonize the surface of wood Next, a heating process for heating the wood, Then, an immersion step of immediately immersing the wood in slaked lime solution, A drying step of drying the wood, and a molding step of scraping and polishing the carbonized portion after the drying, It is characterized by comprising.
• the resistance-enhanced wood according to claim 4 according to the present invention is at least manufactured by the method for enhancing resistance of wood according to any one of claims 1 to 3. It is characterized in that slaked lime penetrates and remains up to the uncarbonized part of the wood.
• the wood targeted by the present invention is a broad-leaved tree or a coniferous tree used as a general building material or craft material. For example, all the wood such as firewood, cedar, pine, firewood and firewood is targeted.
• the completely carbonized portion referred to in the present invention refers to a portion where carbonization has been completed, and the non-carbonized portion refers to a portion not completely carbonized and a woody portion. It should be noted that scraping off the carbonized portion does not mean scraping off all the carbonized portion.
• the slaked lime and the carbonized part are obtained by performing a carbonization step for completely carbonizing the surface of the wood, a heating step, and a dipping step for immersing in the slaked lime solution.
• a carbonization step for completely carbonizing the surface of the wood
• a heating step for heating the surface of the wood
• a dipping step for immersing in the slaked lime solution.
• Other effects according to the present invention will be apparent from the description of the following examples.
• the slaked lime solution is preferably obtained by dissolving 180 cc to 200 cc of volumetric slaked lime powder at a rate of 800 cc to 900 cc of water.
• This ratio of slaked lime solution is sufficiently dilutable to penetrate into the interior of the wood whose surface is carbonized, and not only the carbonized part, but also the uncarbonized part, that is, the lower brown colored part, It can be penetrated into the wood part of the inside even in a relatively short time. Further, since the degree of dilution is high, evaporation of moisture can be promoted during drying, and drying can be performed satisfactorily.
• scraping off the carbonized portion of the wood can proceed to the brown-colored portion below the uncarbonized portion, that is, the uncarbonized portion.
• the slaked lime content will remain, resulting in antiseptic, heat-resistant (flame retardant) and mold prevention effects in the lower layer. Can be demonstrated.
• the surface after such scraping is polished, it is presumed to be due to the penetration of slaked lime, but the surface is glossy and is visually beautiful.
• wood here, cedar wood is used, and its surface is carbonized until a carbonized portion is formed. This is performed at about 1000 ° C. using an electric furnace and injecting nitrogen gas.
• an electric furnace For hardwood wood, 400 ° C to 700 ° C is appropriate.
• a furnace structure that blocks oxygen intrusion without injecting nitrogen gas may be used to prevent combustion and carbonize.
• the heating furnace corresponding to it is used.
• the depth of surface carbonization of wood is adjusted according to the intended use of the wood. As a building material that requires strength, the carbonized portion will be cut later, so that the surface of the timber having a margin that can exhibit its strength is carbonized. Moreover, when using as a craft material or a decoration material, all the carbonization parts may be scraped off, but the timber of the dimension corresponding to this is prepared.
• the wood is heated. This heating is performed at about 150 ° C. to 200 ° C. This heating is performed in order to increase the permeability when immersed in the slaked lime solution in the next step.
• a slaked lime solution prepares slaked lime (Ca (OH) 2), here 200 cc (cup weighing), and dissolves it in 800 cc of water. This water is once boiled to remove chlorine, and is prepared at a warm temperature (approximately 15 ° C. to 30 ° C.).
• the concentration of the slaked lime powder is preferably from 800 cc to 900 cc with respect to 180 cc to 200 cc, considering the permeability to wood. In this state, there is no stickiness, no scattering, the particles are uniformly in the water, and the particles rise like dust when shaken.
• the immersion in the slaked lime solution was 20 hours here. However, it has been experimentally verified that a sufficient penetration state into the carbonized portion, the inner uncarbonized portion, and the woody portion can be obtained in the range of 15 hours to 30 hours. In addition, a slaked lime solution is stirred as needed.
• the wood is dried.
• the drying is performed by applying a hot air to perform a predetermined drying, and then naturally drying.
• forced drying with hot air or dry air may be continued to shorten the time, but it has been found that natural drying is preferable for wood.
• the degree of drying is such that the residual moisture is 20% or less.
• a part of the carbonized portion of the wood after drying is scraped off.
• a buffing machine capable of obtaining a polishing action at the same time is used.
• it may be manually removed with a file or chisel.
• the required size is processed.
• the carbonized portion may be scraped off to the lower brown portion.
• this wood when used in a main part between floors or in a space to make use of the grain, when used as a building material in an easily visible place, if the carbonized part remains, it looks bad and the carbonized part is slaked lime. Even if it is fixed by, it is not preferable to be contacted.
• the timber treated in this way has lime permeated and retained at least over the carbonized portion of the wood and the wood portion immediately below the carbonized portion, so that it has antiseptic properties, heat resistance (flame resistance), and mold prevention. From the place where it can exert its effect, it is very useful as a building material in various parts of the house, or as a craft material, by applying the required dimension processing, etc. Also, by glossing off the surface, the surface is glossy on the contrary Therefore, it can be used for various purposes.
• the carbonization-treated wood is immersed in the slaked lime solution prior to the step of scraping off the carbonized portion and the polishing step.
• these steps are preceded and the immersion in the slaked lime solution is performed later. Can be. Even if it does in this way, since the slaked lime solution permeates and remains in the incompletely carbonized state part or the wood part, the effect of antiseptic, heat resistance (flame retardant), and mold prevention can be exhibited.
• the heating step (about 150 ° C. to 200 ° C.) is performed before the step of immersing in the slaked lime solution so as to improve the absorption or penetration of the slaked lime solution. .
• the resistance-enhanced wood treatment method according to the present invention and the resistance-enhanced wood produced by the method are subjected to an extremely simple manufacturing process of carbonization and immersing in a slaked lime solution. Because of its low cost, it can be used for various applications because it can increase the (flammability) and prevent molds, and can be applied and has a wide range of applications.

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• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Wood Science & Technology (AREA)
• Forests & Forestry (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Chemical And Physical Treatments For Wood And The Like (AREA)

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Citations (4)

Family Cites Families (4)

• 2011
  • 2011-01-14 JP JP2011006155A patent/JP5259748B2/ja active Active
• 2012
  • 2012-01-10 WO PCT/JP2012/050237 patent/WO2012096249A1/ja active Application Filing
  • 2012-01-10 CN CN2012800053366A patent/CN103328168A/zh active Pending

Patent Citations (4)

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