JP2009024470A - Insulated sound absorbing and deodorizing material with charcoal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a charcoal-containing heat-insulation/sound-absorption/deodorization material which is porous and lightweight, has an advantage of low costs, and is excellent in heat insulation, sound absorption, deodorization and electromagnetic wave absorption effects as well as humidity conditioning effect (water absorption effect) inherently possessed by charcoal, by mixing charcoal powder, poly-propylene, starch and water, and aqueous-foaming and molding the mixture by a twin-shaft molding machine. <P>SOLUTION: The charcoal containing heat-insulation/sound-absorption/deodorization material is made by mixing charcoal powder, polypropylene, starch and water and aqueous-foaming and molding the mixture by a twin-shaft molding machine. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a charcoal-containing heat-absorbing sound-absorbing and deodorizing material used mainly in a floor, ceiling, or wall of a building.

  As a conventional technique, a foamed polystyrene crushed to a size of 10 to 30 mm under the floor or the ceiling of a building, or a pulverized product and a flame-retardant polyurethane waste material to a size of 10 to 30 mm. By blowing a mixture with the pulverized material with a blowing machine, a heat insulating material having a height of 200 to 300 mm is formed under the floor or in the gap of the ceiling, improving the heat insulating performance, flame retardancy and sound absorption performance of the building. There is something that consists of things. (See Patent Document 1)

As another conventional technique, charcoal formed by pulverizing to a predetermined size and a plurality of chip-shaped foam chip bodies having a heat insulating action are bonded to a predetermined size with an adhesive to increase the specific gravity. There is a heat insulating humidity conditioning material characterized in that a predetermined amount of the charcoal and the foam heat insulating material are mixed. (See Patent Document 2)
JP 2007-63883 A Japanese Patent Laid-Open No. 11-256705

  In the former, simply using a foamable plastic material, the heat insulation and sound absorption are improved, and unlike the present invention in which carbon powder is added and water-foamed, the use effect is accordingly. Is also different.

  In the latter, since the charcoal and the foamed chip body are fixed with an adhesive, the surface area is small, and therefore the humidity control effect and the sound absorption effect are inferior.

  The present invention is intended to solve the problems of such a conventional configuration. By mixing carbon powder, polypropylene, starch and water, and foaming with a biaxial molding machine, the porous structure is formed. The heat-absorbing, sound-absorbing and deodorizing material with charcoal is superior in heat insulation, sound absorption, deodorization, and electromagnetic wave absorption as well as the original moisture conditioning (water absorption) effect. Is intended to provide.

In order to achieve the above object, the present invention is formed by mixing charcoal powder, polypropylene, starch, and water, and water-foaming with a biaxial molding machine.
When the weight ratio is 100% except for water, the carbon powder is 40% to 50%, the polypropylene is 35% to 45%, and the starch is 10% to 20%.
The cylinder temperature of the biaxial molding machine is formed at 170 ° C to 210 ° C.
It is formed into a cylindrical shape.

1) By mixing charcoal powder, polypropylene, starch and water, and foaming with a biaxial molding machine, it is porous, lightweight, and can be processed at low cost, and also has a humidity control (water absorption) effect. Needless to say, it is excellent in heat insulation, sound absorption, deodorization, electromagnetic wave absorption effect, etc., and can be used for various purposes.
2) When the weight ratio other than water is 100%, the balance between effect and cost is good by setting the carbon powder to 45%, the polypropylene to 40%, and the starch to 15%.
3) When the cylinder temperature is molded at around 190 ° C., the foaming degree is good.
4) Workability is good by forming it into a cylindrical shape with a length of about 4 cm to 8 cm.

  The heat insulating sound absorbing and deodorizing material 1 with charcoal is composed of 45% charcoal powder 2, 40% polypropylene 3 and 15% starch 4 when the weight ratio other than water is 100%. 13% added and mixed, water foamed with a twin-screw molding machine (not shown), extruded (string), cut at a required interval of 4 cm to 8 cm, and processed into a cylindrical shape (φ20 mm to φ40 mm) .

The usage example of the said charcoal-containing heat insulation sound absorption deodorizer 1 is demonstrated.
For example, when used as a humidity control material under the floor U, 2m ^{3 to} 4m ^{3 of} heat-insulated sound absorbing and deodorizing material with charcoal per tsubo shall be used, and 2 to ³ layers of heat insulating sound absorbing and deodorizing material with charcoal shall be stacked. It is.

  Similarly, it can be used in RC and SRC slabs and ceilings and walls of ordinary houses.

Below, the data of the said charcoal-containing heat insulation sound-absorbing deodorant material 1 are demonstrated.
First, as a heat insulation effect, underfloor (6 tsubos) of a house in Hiroshima city was placed in December 2006, and underfloor humidity measurement data was measured.
Under the floor where the construction was not performed, there was a temperature change from −1 ° C. to 23 ° C., whereas under the floor where the construction was performed, the temperature was around 11 ° C.
Moreover, in June 2006, there was a temperature change from 15 ° C. to 32 ° C. under the floor where the work was not performed, but it was around 20 ° C. under the floor where the work was being performed.

In addition, in the sound absorption performance, a comparison was made between extruded polyethylene (50 mm) and heat-absorbing sound-absorbing and deodorizing material 1 (130 mm) containing charcoal. In the case of extruded polystyrene, the sound absorption rate was 0.1 or less at 400 Hz. On the other hand, it was 0.85 in the heat insulation sound absorbing and deodorizing material 1 with charcoal. Furthermore, the reverberation time was 16 seconds in the empty state at 400 Hz, whereas the heat insulating sound absorbing and deodorizing material 1 with charcoal was It was 3 seconds.
Therefore, the above-described effects can be obtained by constructing a floor of a two-story or higher building or a wall of a general house.

In addition, it can be used in a futon or bed as a use, or as a deodorant for toilets (with a net bag, with an internal capacity of 15 cm ³ ). Report that there was a deodorizing effect in the home.

  As an electromagnetic wave absorption experiment, the charcoal-insulated sound-absorbing and deodorizing material 1 laid on two layers was irradiated with 6 mG of electromagnetic waves. Later, it became 0.5 mG, and the electromagnetic wave absorption rate was high. (After 90 minutes, 0.1 mG or less)

  As a water absorption experiment, 100 g of water was absorbed with respect to 100 g of normal charcoal (water absorption rate of 100%), but the heat insulating sound absorbing and deodorizing material 1 with charcoal absorbed water of up to 800 g with respect to 100 g. (Water absorption 800%)

In addition, what is necessary is just to determine the shape and magnitude | size of the heat insulation sound-absorbing deodorant material 1 containing charcoal as needed, and it does not specifically limit it.
In addition, the blending ratio (weight ratio) is also effective if it is within the range.

  The perspective view of the heat insulation sound absorption deodorizer containing charcoal which shows one Example of this invention.   The use condition figure of the heat insulation sound absorption deodorizer containing charcoal which shows one example of the present invention.

Explanation of symbols

1 --- heat-insulated sound absorbing and deodorizing material 2 --- charcoal powder 3 --- polypropylene 4 --- starch

Claims (4)

  A heat insulating sound absorbing and deodorizing material containing charcoal, which is formed by mixing charcoal powder, polypropylene, starch, and water and foaming with a biaxial molding machine.   The weight ratio of carbon dioxide is 40% to 50%, polypropylene is 35% to 45%, and starch is 10% to 20%. Insulated sound absorbing and deodorizing material with charcoal.   The heat insulating sound absorbing and deodorizing material containing charcoal according to claim 1 or 2, wherein the cylinder temperature of the biaxial molding machine is formed at 170 ° C to 210 ° C.   The heat insulation sound-absorbing and deodorizing material with charcoal according to claim 1, 2, or 3, characterized by being formed into a columnar shape.

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