KR20160109854A - Insulation Materials for Construction - Google Patents

Insulation Materials for Construction Download PDF

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Publication number
KR20160109854A
KR20160109854A KR1020150035019A KR20150035019A KR20160109854A KR 20160109854 A KR20160109854 A KR 20160109854A KR 1020150035019 A KR1020150035019 A KR 1020150035019A KR 20150035019 A KR20150035019 A KR 20150035019A KR 20160109854 A KR20160109854 A KR 20160109854A
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KR
South Korea
Prior art keywords
heat insulating
insulating material
mixture
present
wood
Prior art date
Application number
KR1020150035019A
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Korean (ko)
Inventor
박병은
Original Assignee
서울시립대학교 산학협력단
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Application filed by 서울시립대학교 산학협력단 filed Critical 서울시립대학교 산학협력단
Priority to KR1020150035019A priority Critical patent/KR20160109854A/en
Publication of KR20160109854A publication Critical patent/KR20160109854A/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)

Abstract

The present invention relates to a heat insulating material for buildings having excellent heat insulating performance and low manufacturing cost, and a method of manufacturing the same. The heat insulating material for building according to the present invention is characterized in that the heat insulating material used in the building is composed of a mixture of sawdust or wood and an organic material, and the mixture is foamed. Further, the present invention is characterized in that the mixture is mixed with a porous mineral such as loess, diatomaceous earth and vermiculite.

Description

{Insulation Materials for Construction}

The present invention relates to a heat insulating material used for a building such as a house or an apartment, and more particularly, to a heat insulating material for building having excellent heat insulating performance and low manufacturing cost, and a method for manufacturing the same.

Insulation refers to a material that can inhibit or block the movement of heat energy by conduction, convection, radiation. Currently, thermal insulation is used for residential buildings or walls installed on the outer wall or inner wall of a house or a building, a panel used for a core material of a sandwich panel, or a vehicle or a vessel. Refrigeration warehouses, household appliances, and so on. Recently, as the national necessity of reducing energy consumption to reduce energy costs and to reduce environmental pollution problems has come to light, legislation related to the use of insulation materials in buildings is gradually strengthened.

Patent Document 10-0750862 (Composite insulation for building), Patent registration 10-1218238 (Building insulation and method for manufacturing the same), Patent document 10-2013-0041459 (Composite insulation for building), Patent document 10-2014-0087637 Phenol foam based building insulation and building insulation including it).

The heat insulating material is largely divided into an inorganic insulating material and an organic insulating material, and a composite material of an inorganic insulating material and an organic insulating material. Inorganic insulators consist mainly of ceramics, silica, and perlite, which are disadvantageous in that they are excellent in nonflammability but have a low thermal insulation. The organic insulator is mainly composed of expanded polystyrene, expanded polyurethane, foamed polyethylene, etc. It has a disadvantage in that it is low in manufacturing cost and excellent in heat insulation performance, but weak in heat and low in mechanical strength. In recent years, glass wool having high heat insulating property and good nonflammability has been developed as an inorganic insulating material, and has been attracting attention. However, glass wool has a disadvantage in that it is disadvantageous for general use as a thermal insulation material because it is very expensive to manufacture.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a heat insulating material for buildings having good heat insulating performance.

Another object of the present invention is to provide a heat insulating material having a low manufacturing cost and excellent mechanical strength and a method of manufacturing the same.

Another object of the present invention is to provide a heat insulating material and a method of manufacturing the same that can reduce the noise of a building due to its excellent sound insulating performance and insulation performance.

In order to achieve the above-mentioned object, according to a first aspect of the present invention, there is provided a heat insulating material for use in a building, wherein the heat insulating material is a mixture of sawdust or wood and an organic material.

And the porous mineral is further mixed in the mixture.

Further, the porous mineral may be characterized by containing at least one of loess, diatomaceous earth and vermiculite.

The porous mineral further comprises a ceramic.

The porous mineral further comprises zeolite.

The organic material may include at least one of polyethylene, polystyrene, and polyurethane.

According to a second aspect of the present invention, there is provided a method of manufacturing a heat insulating material for building, comprising the steps of: mixing a sawdust or wood with an organic material to form a mixture; and foaming the mixture .

And the mixing ratio of the organic material to the sawdust or wood powder is 5 to 30% by weight.

Characterized in that the mixture further comprises a porous mineral.

Further, the porous mineral may be at least one of loess, diatomaceous earth and vermiculite.

The porous mineral further comprises a ceramic.

The porous mineral further comprises zeolite.

The organic material may include at least one of polyethylene, polystyrene, and polyurethane.

The heat insulating material according to the present invention is constituted by foaming a mixture of sawdust or wood and an organic matter. As a result, a heat insulating material having excellent mechanical strength, flame retardancy, and good thermal conductivity is realized.

1 is a perspective view showing an outer shape of a heat insulating material according to the present invention.
2 is a view for explaining a soundproof effect of a heat insulating material according to the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the embodiments described below represent one preferred embodiment of the present invention, and examples of such embodiments are not intended to limit the scope of the present invention. Those skilled in the art will readily understand that the present invention can be carried out in various ways without departing from the technical idea thereof.

First, the basic concept of the present invention will be described.

Buildings are constructed using various materials. Examples of the materials used for building construction include metal materials such as iron, mortar materials such as concrete / cement, brick and lime, aggregates such as tile, stone, plate, wood, glass and gravel, moistureproof materials such as polyethylene and polypropylene, , Paper-based wallpaper, and plastic-based flooring.

 The thermal conductivity of the material is approximately 50 to 370 (W / mK) for iron and other metal materials, approximately 1 to 2.5 (W / mK) for concrete / cement, 0.2 to 1 (W / mK) (W / mK), the stone is about 1 to 2.8 (W / mK), the wood is about 0.13 to 0.19 (W / mK) (W / mK), 0.17 ~ 0.27 (W / mK) for wallpaper and 0.19 (W / mK) for flooring, respectively.

Therefore, when building is built, insulation is attached to the inner wall or outer wall of the building in consideration of the cooling and heating of the building. A heat insulating material used for such a purpose usually employs a foaming resin foamed with polystyrene, polyurethane, polyethylene resin or the like. These foamed resins have an advantage that the thermal conductivity is approximately 0.04 (W / mK) or less and the thermal conductivity is very low and light, and the manufacturing cost is very low. However, the heat insulating material using such a foamed resin is disadvantageous in construction because it is very weak in strength.

As described above, the conventional heat insulating material has a disadvantage in thermal conductivity in the case of a heat insulating material using an inorganic material having excellent mechanical strength, and has a disadvantage in that the mechanical strength is extremely low in the case of a foamed resin having a high thermal conductivity.

One of the most effective known insulation materials is air, especially air in a stationary state. Polystyrene, polyurethane, polyethylene resin and the like which are conventionally used as effective insulating materials are not insulated per se. These organic resins must inevitably undergo a foaming process in order to become an insulating material. When the organic resin is foamed, a large amount of pore layer, that is, a stopped air layer, is produced in the resin. By this pore layer, the foaming resin has an effective effect as a heat insulating material.

1 is a perspective view showing an outer shape of a heat insulating material 10 according to the present invention. The heat insulating material according to the present invention is provided on the inner wall or outer wall surface of the building and can also be used as a core material of a sandwich panel. In the drawing, the heat insulating material 10 is shown as having a square shape, but its shape and size are not limited to a specific one. Further, the heat insulating material 10 according to the present invention may be combined with other heat insulating material to have a multi-layered structure.

The heat insulating material 10 of the present invention is composed of sawdust or a mixture of wood and organic matter. As described above, wood of the building material has a relatively good thermal conductivity as compared with other materials. When wood is processed, by-products such as sawdust are essentially produced. By combining these sawdust to make the board, it is possible to form more pores in the board than the original wood. The size and number of pores will depend on the pressure applied to the material when manufacturing the board. This is the same for wood flourized wood. The present inventors have found that when a board is manufactured using sawdust or wood flour, the thermal conductivity of the board can be lowered to 0.9 (W / mK) or less, more preferably 0.6 (W / mK) or less, It is confirmed that the combined strength of the organic matter and the foaming organic material greatly reduces the thermal conductivity and greatly improves the mechanical strength of the heat insulating material due to the inherent characteristics of the wood.

In another embodiment of the present invention, the sawdust or the mixture of wood and organic matter may preferably be mixed with an inorganic material. As the inorganic material, a porous inorganic material is preferably employed. As the porous inorganic material, for example, loess, diatomaceous earth and vermiculite can be preferably employed. As the porous inorganic material, a mixture of the above porous inorganic materials may be employed. The porous inorganic material may additionally or alternatively be mixed with porous ceramics or zeolite.

The organic material is employed as a binder for sawdust or wood flour. The mixing ratio of the organic substances is set to approximately 5 to 30% by weight with respect to the inorganic substance. As the organic material, for example, polyethylene is preferably employed, and polystyrene, polyurethane and the like may be employed. The organic matter is not limited to a specific one.

In the case of manufacturing the heat insulating material 10 according to the present invention, sawdust or wood and organic materials are mixed, and the mixture is foamed to produce the heat insulating material 10. The heat insulating material 10 according to the present invention is formed with a large amount of first pores according to the inclusion of an organic matter and a large amount of second pores due to pores inherently provided in the sawdust or wood powder.

As described above, the pores serve as an important factor for determining the thermal conductivity of the material. Pores with a closed space significantly reduce the thermal conductivity of the material. The pores also provide a soundproofing function to absorb or block the sound energy transmitted through the material. Particularly, pores having various sizes are improved in sound insulation and soundproofing effect by the interaction of the space.

Fig. 2 is a view for explaining such a sound absorption and sound insulation function. 2, reference numeral 20 denotes a porous material having a plurality of pores. The first porous body 21 having a relatively large diameter and the second porous body 22 having a small diameter are present in the porous material and when the sound wave A is drawn from the outside, And the first and second pores (21, 22). However, when the sound wave A having passed through the first pore 21 enters the second pore 22, the sound wave A is reflected or refracted as indicated by a and b. This phenomenon occurs similarly when the sound wave b passing through the second pore 22 enters the first pore 21. This is because the resonance frequency of the pore varies depending on the pore size.

Generally, the sound insulation function of a material is determined by how much of the sound wave applied from the outside passes through it, and the sound absorption function is determined by how much the sound wave applied from the outside is absorbed. All materials are vibrated when they are stimulated by external sound waves. At this time, the frequency sounds that are affected by the vibration are absorbed through the process of conversion into vibrational energy.

As described above, if pores having different sizes are formed in a certain medium, the linearity of the sound waves is remarkably reduced as the sound waves are reflected and refracted in passing through the pores. That is, the sound insulation function is improved. The sound waves are resonated while passing through pores of different sizes. That is, the sound wave energy of various frequency bands is converted into the vibration energy of the pore, thereby improving the sound absorption function.

Particularly, when the porous mineral is mixed with the heat insulating material, the noise of the low frequency band can be more effectively removed by the micropores possessed by the porous mineral. The low-frequency noise is the main source of noise in the building.

The heat insulating material according to the present invention has the following characteristics.

1. The thermal conductivity is very low due to the large amount of pores.

2. It has high mechanical strength compared to conventional foamed organic insulation because it is mixed with wood or wood.

3. Because it contains many pores, it is very light in weight.

4. When the porous mineral is mixed with the insulation, the flame retardancy of the insulation is improved by these minerals.

5. The manufacturing cost is low.

The embodiments according to the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the technical spirit of the present invention.

10: Insulation, 20: Porous material.
21, 22: Porosity.

Claims (13)

In the insulation used in buildings,
A sawdust or a mixture of wood and an organic material. The method according to claim 1,
Characterized in that the mixture is further mixed with a porous mineral. 3. The method of claim 2,
Wherein the porous mineral includes at least one of loess, diatomaceous earth and vermiculite. The method of claim 3,
Wherein the porous mineral further comprises a ceramic. The method of claim 3,
Wherein the porous mineral further comprises a zeolite. The method according to claim 1,
Wherein the organic material comprises at least one of polyethylene, polystyrene, and polyurethane. A method of manufacturing a heat insulating material for building,
Mixing sawdust or wood and an organic material to form a mixture,
And foaming the mixture. ≪ RTI ID = 0.0 > 11. < / RTI > 8. The method of claim 7,
Wherein the mixing ratio of the organic material to the sawdust or wood powder is 5 to 30 wt%. 8. The method of claim 7,
Lt; RTI ID = 0.0 > 1, < / RTI > wherein the mixture further comprises a porous mineral. 10. The method of claim 9,
Wherein the porous mineral includes at least one of loess, diatomite, and vermiculite. 11. The method of claim 10,
Wherein the porous mineral further comprises a ceramic. 11. The method of claim 10,
Wherein the porous mineral further comprises a zeolite. 8. The method of claim 7,
Wherein the organic material comprises at least one of polyethylene, polystyrene, and polyurethane.
KR1020150035019A 2015-03-13 2015-03-13 Insulation Materials for Construction KR20160109854A (en)

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KR1020150035019A KR20160109854A (en) 2015-03-13 2015-03-13 Insulation Materials for Construction

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Application Number Priority Date Filing Date Title
KR1020150035019A KR20160109854A (en) 2015-03-13 2015-03-13 Insulation Materials for Construction

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