JPH10169082A - Lightweight woody material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excellent heat insulating function or sound absorbing function by filling the internal space of a panel, the recess of an I-type beam or the internal space of a box-type beam with an insulation material made of phenol resin expanded material and a wood chip, an insulation material made of a phenol resin expanded material and wood powder, or the like. SOLUTION: The internal space of a panel formed out a surface material 1a and a frame material 2a is filled with an insulation material made of phenol resin expanded material and wood chips, an insulation material 3b made of phenol resin expanded material and wood powder, or an insulation material 3c made of a phenol resin expanded material, wood chips and wood powder. Then, the surface material 1a formed out of plywood, plaster board or the like is subjected to flame proof finishing treatment, using one type or a plurality of types of compounds among a phosphorus compound, a boron compound. a halogen compound, an aluminum compound and an antimony compound. Thus, the appearance of dew condensation in the panel or the wall can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel-like wooden material used as a wall material, a floor material, a ceiling material, a roof material and the like of a house, and a wooden structure used as a structural material such as a pillar and a beam of a house. For materials.

[0002]

2. Description of the Related Art In the Great Hanshin-Awaji Earthquake, collapse of wooden houses became a major problem. In particular, it was reported that houses built using the conventional method, the so-called framing method, had a high rate of severe damage, while houses built using the 2x4 method or the prefabricated method had relatively little damage. ing. Based on this recognition, attempts have been made to incorporate the advantages of the 2 × 4 construction method and the prefabricated construction method even in the design of a house by the conventional framing method. One of such attempts is to use panels for floors, walls, ceilings, roofs and the like, and various panels are currently being developed. Many of the panels currently under development are filled with insulation inside the panels.

[0003] On the other hand, it is said that the lighter the structural material such as a column material or a beam material, the better. This means that the energy added to the building due to the shaking during the earthquake is closely related to the weight of the building, and that the force applied to the joints of the materials and the foundation of the building depends on the weight of the building Is the main reason. Therefore, even wood-based structural materials such as I-beams and box-shaped beams have been developed to reduce the weight.

[0004]

[Problems to be solved by the invention]

1. A panel filled with a heat insulating material has the following problems depending on the type of the filled heat insulating material. That is, when glass wool is used as the heat insulating material, the compressive strength and the bending strength are weak, and large mechanical strength cannot be expected. In addition, since moisture absorption is low and moisture permeability is high, dew condensation is likely to occur on the surface, and the panel itself and eventually the building may be decayed.

[0005] When rigid urethane foam is used as a heat insulating material, the compressive strength and bending strength are relatively weak.
Large earthquake resistance cannot be expected. Moreover, since it does not have moisture absorption and desorption properties, dew condensation is likely to occur, and there is a risk that the panel itself and eventually the building will decay. Furthermore, since the flammability is high, it is easily burned at the time of a fire, and furthermore, there is a high possibility that the damage is increased, such as generation of toxic gas.

2. I-beams and box-type beams according to the prior art have the advantage of being lightweight, but have the disadvantage of poor fire resistance.

3. In view of the above-mentioned drawbacks of the prior art, the present invention has large earthquake resistance because of its high compressive strength and bending strength, and also has moisture absorption / release properties and low moisture permeability. Therefore, dew condensation hardly occurs, furthermore, it is difficult to burn, heat insulation,
Providing lightweight panel-like wood-based materials with excellent sound absorption properties, and providing lightweight wood-based materials for structures such as pillars and beams that are lightweight and resistant to fire due to their low fire resistance. The purpose is to do.

[0008]

[Means for Solving the Problems]

1. In order to solve the above problems, the following measures were taken in the lightweight wood-based material according to the present invention.

A heat insulating material composed of a phenol resin foam and wood chips, a heat insulating material composed of a phenol resin foam and wood flour, or a heat insulating material composed of a phenol resin foam, wood chips and wood flour, Fill the recess of the I-beam and the inside of the box-shaped beam.

[0010] Phosphorus compounds, boron compounds,
The flame retarding treatment is performed with one or more of a halogen compound, a nitrogen compound, a silicon compound, an aluminum compound, and an antimony compound.

A gypsum board is used as a surface material.

[0012] The wood chips and wood flour in the heat insulating material are subjected to a flame retarding treatment with any one or more of a phosphorus compound, a boron compound, a halogen compound, a nitrogen compound, a silicon compound, an aluminum compound, and an antimony compound. Do. Hereinafter, what action the solution has will be described.

2. In the lightweight wood-based material according to the present invention, a heat insulating material (hereinafter referred to as a lightweight body A) composed of wood chips and / or wood flour and a phenol resin foam is used. As shown in Table 1, this lightweight body A has higher compressive strength than a heat insulating material made of phenol foam or a heat insulating material made of hard urethane foam. Therefore, a panel-shaped lightweight wood-based material using the lightweight body A having such characteristics and a lightweight wood-based material for a structure have high strength and excellent earthquake resistance.

3. Further, the lightweight body A has a moisture absorbing and releasing property which is not provided by a heat insulating material made of phenol foam or a heat insulating material made of hard urethane foam. Therefore, in the case of a panel-shaped lightweight wood-based material or a lightweight wood-based material for a structure using the lightweight body A having such characteristics, dew condensation does not occur on the inside or on the surface, and wood decay does not occur.

4. The surface material is subjected to a flame retarding treatment with one or more of a phosphorus compound, a boron compound, a halogen compound, a nitrogen compound, a silicon compound, an aluminum compound, and an antimony compound, or a heat insulating material. By subjecting the wood chips and wood flour to flame retardant treatment with one or more of phosphorus compounds, boron compounds, halogen compounds, nitrogen compounds, silicon compounds, aluminum compounds, and antimony compounds, The lightweight wood-based material according to the invention can further enhance the flame retardancy. Specifically, when the flame-retarding treatment was performed on the lightweight body A with an aqueous solution of ammonium phosphate (hereinafter referred to as “light body B”), the lightweight body B was made of a hard urethane foam as shown in Table 3 As a result, it has excellent flame retardancy as compared with the case where it is used.

5. If it is desired to further increase the flame retardancy, a gypsum board is used as the surface material. The gypsum board is excellent in fire resistance, so that the flame retardancy is further enhanced.

[0017]

[Table 1]

[0018]

[Table 2]

[0019]

[Table 3]

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

1, FIG. 1 is a perspective view of a panel-like lightweight wood-based material according to the first aspect. Insulation material (3a) composed of phenolic resin foam and wood chips, heat insulation material (3b) composed of phenolic resin foam and wood flour, or phenol inside a panel composed of surface material (1a) and frame material (2a) Insulation material consisting of resin foam, wood chips and wood flour (3
c) is filled. As the surface material (1a), a lumber product, a laminated wood, a plywood, a wooden board, or the like is used. On the other hand, the frame material (2
For a), a lumber product, a laminated wood, or the like is used.

2. The lightweight wood-based material according to the second aspect does not use the frame material (2a) in the lightweight wood-based material according to the first aspect.

3. FIG. 2 is a perspective view of a pillar-shaped lightweight wood-based material according to the fourth aspect. This lightweight wood-based material is an I-shaped frame (2) composed of a flange (5) and a web (6).
b), a heat insulating material filled in the concave portion (4) of the frame material (2b), and a surface material (1b) put on the concave portion (4). The heat insulating material is made of a heat insulating material (3a) made of phenol resin foam and wood chips, a heat insulating material (3b) made of phenol resin foam and wood flour, or a heat insulating material of phenol resin foam, wood chips and wood flour. The heat insulating material (3c) is used. For the flange (5), a lumber product or a laminated wood is used. For the web (6), lumber, laminated wood, plywood, wood-based boards, etc. are used. As the surface material (1b), a lumber product, a laminated wood, a plywood, a wooden board or the like is used.

4. FIG. 3 is a partially cutaway perspective view of the columnar lightweight wood-based material according to the fifth aspect. Surface material (1c)
And a frame material (2c) to form a box-shaped outer frame, in which a heat insulating material (3) made of a phenol resin foam and wood chips.
a), a heat insulating material composed of phenol resin foam and wood flour (3)
b) or a heat insulating material (3c) composed of phenolic resin foam, wood chips and wood flour. (7) is a stiffener, which is inserted as needed to prevent buckling. As the surface material (1c), a lumber product, a laminated wood, a plywood, a wooden board, or the like is used. For the frame material (2c) and the stiffener (7), lumber products, glued lumber, and the like are used.

5. A heat insulating material used for the lightweight wood-based material according to the present invention, that is, a heat insulating material (3a) composed of a phenol resin foam and wood chips, and a heat insulating material composed of a phenol resin foam and wood flour ( 3b) A heat insulating material (3c) comprising a phenolic resin foam, wood chips and wood flour is produced by a high-frequency whole heating method. In this case, the heat insulating materials (3a), (3
b), (3c) It is possible to manufacture only it, or to form heat insulators (3a), (3b), (3c) inside the product. Here, as the wood chips and wood flour, any shapes of wood such as planer chips and sawdust, chips, and wood processed into strands, which are discharged in large quantities at a sawmill or a glued wood manufacturing factory, can be used.

Specifically, the heat insulating materials (3a), (3b),
When only (3c) is manufactured, the foamable phenol resin and the wood chips and / or the wood powder are uniformly mixed and filled in the container. After filling, it is heated by a high-frequency whole heating method. Then, the phenol resin foams and fills the space between the wood chips and wood flour, thereby obtaining a heat insulating material. The heat insulating materials (3a), (3b), and (3c) obtained are processed into predetermined dimensions and fitted into a frame material to form a lightweight wood-based material.

Further, heat insulating materials (3a), (3
In the case of forming b) and (3c), a space surrounded by the frame material and the surface material is uniformly mixed and filled with the phenol resin and wood chips or wood flour or both. Then, it is heated by a high-frequency whole heating method. Then, the phenol resin foams and the heat insulating materials (3a), (3b), and (3c) are formed in the lightweight wood-based material.

As described above, the heat insulating materials (3a), (3
b) and (3c) are formed, but the mechanical properties such as compressive strength and bending strength, and the flame retardancy and moisture absorption / release properties are changed by changing the mixing ratio of wood chips or wood flour and phenol resin foam. Properties can be changed. That is, if it is desired to increase the compressive strength, bending strength and moisture absorption / release properties, the ratio of wood chips and wood powder may be increased, while if it is desired to increase the flame retardancy or heat insulation, the ratio of the phenol resin may be increased. .

[0029]

As described above, the lightweight wood-based material of the present invention has excellent flame retardancy and excellent moisture absorption / desorption properties, so that it does not easily burn and does not cause dew condensation inside the panel or inside the wall.

Further, since the panel is formed in a panel shape, the operation is easy, and since the inside is filled with the heat insulating material, the work of filling the heat insulating material on site, which is currently performed, is unnecessary.
Therefore, the construction period can be shortened and the construction cost can be reduced.

Lightweight wooden materials for structures, such as columns and beams, are lighter than conventional wooden structural materials.
Therefore, when this material is used, the building becomes lighter, the safety in the event of an earthquake is improved, and a simpler method can be used for joining the materials.

[Brief description of the drawings]

FIG. 1 is a perspective view of a panel-shaped lightweight wood-based material according to claim 1.

FIG. 2 is a perspective view of the columnar lightweight wood-based material according to claim 4.

FIG. 3 is a partially cutaway perspective view of the columnar lightweight wooden material according to claim 5.

[Explanation of symbols]

1a, 1b, 1c ··· Surface material 2a, 2b, 2c ·
・ Frame material 3a, 3b, 3c ・ ・ Insulation material 4 ・ ・ Recess 5 ・ ・ Flange 6 ・ ・ Web 7 ・ ・ Stiffener

Claims (6)

[Claims] 1. Inside a panel consisting of a surface material (1a) and a frame material (2a), a heat insulating material (3a) consisting of a phenol resin foam and wood chips, and a phenol resin foam and wood flour. Panel-like lightweight wood-based material filled with a heat insulating material (3b) or a heat insulating material (3c) composed of phenolic resin foam, wood chips and wood flour. 2. A heat insulating material (3a) comprising a phenolic resin foam and wood chips, a heat insulating material (3b) comprising a phenolic resin foam and wood flour, or a heat insulating material (3b) comprising a phenol resin foam, wood chips and wood flour. Panel-shaped lightweight wood-based material in which a surface material (1a) is adhered to the surface of a heat insulating material (3c) made of the same. 3. A surface material made of plywood or gypsum board which has been subjected to a flame-retarding treatment with one or more of a phosphorus compound, a boron compound, a halogen compound, a nitrogen compound, a silicon compound, an aluminum compound and an antimony compound. The panel-like lightweight wood-based material according to claim 1 or 2, wherein (1a) is formed. 4. A heat insulating material (3a) comprising a phenolic resin foam and wood chips, a heat insulating material (3b) comprising a phenol resin foam and wood flour, or a phenol resin foam, wood chips and wood flour. Heat insulating material (3c) made of a frame material (2b)
Is filled in the recesses (4) on both sides of the I-shaped beam formed into an I-shape,
Further, a columnar lightweight wood-based material characterized in that a surface material (1b) is adhered to the concave portion (4). 5. A heat insulating material (3a) comprising a phenol resin foam and wood chips inside a box-shaped beam having side surfaces formed by a frame material (2b) and a surface material (1b), and a phenol resin foam. Thermal insulation made of wood flour (3b) or thermal insulation made of phenolic resin foam, wood chips and wood flour (3c)
A columnar lightweight wood-based material, characterized by being filled with. 6. A heat insulating material (3a) comprising a phenol resin foam and wood chips, a heat insulating material (3b) comprising a phenol resin foam and wood flour, a phenol resin foam, wood chips and wood flour. Wood chips, wood flour or both used in the heat insulating material (3c) made of any one or more of phosphorus compounds, boron compounds, halogen compounds, nitrogen compounds, silicon compounds, aluminum compounds and antimony compounds The lightweight wood-based material according to claim 1, wherein the compound is subjected to a flame retarding treatment.