JP2002293600A - Fire proof, humidity conditionable building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire proof, humidity conditionable building material having properties of absorbing/discharging moisture, excellent in fire proofing and fire resistant properties, as same as those of cedar wood. SOLUTION: The fire proof, humidity conditioning building material 1 comprises a moisture absorbing/discharging granular, the diameter of which is of <=100 μm granularity, and a hydraulic material. The granular is selected from a kind or >=2 kinds of materials among diatomaceous earth, silica gel, zeolite, sepiolite, apataljite, calcium silicate, allophane, Shirasu (a kind of volcanic taff) kaolinite, aluminum oxide, charcoal, activated charcoal. The hydraulic material comprises a kind or >=2 kinds of materials selected from among cement, slag, gypsum, calcium carbonate, magnesium carbonate, and calcium silicate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moisture-controlling fire-resistant building material having a moisture absorption / desorption property equal to or higher than that of cedar lumber, and having fire resistance and fire resistance, which can be used as a ceiling material, an interior material and the like. .

[0002]

2. Description of the Related Art Conventionally, in the construction of houses and the like, an architectural style in which an earth wall structure and wood or a wood-based building material obtained by processing the same are applied has been adopted for a long time. A house having such a structure has an excellent humidity control ability capable of preventing the occurrence of dew condensation and extreme drying in a living space due to the excellent moisture absorbing and releasing ability of earth walls and wood-based materials.

However, in recent years, it has become difficult to obtain good-quality wood-based materials due to the depletion of wood-based resources, and prices have continued to rise. On the other hand, a wood-based building material is a flammable material and has the drawbacks that it is easily attacked by pests such as termites and it is easy to cause corrosion.

On the other hand, with respect to the earth wall structure, the number of skilled and highly skilled workers has become extremely small, and the earth wall has hardly been adopted due to a rise in labor costs.

[0005]

In recent years, as a result of the pursuit of structures that are highly airtight and highly heat-insulating for houses and the like,
Moisture generated indoors cannot diffuse to the outside and dew condensation occurs throughout the room, causing wetting and stains, and causing problems such as mites and molds. Conventionally, air conditioning equipment that controls temperature and humidity has been used as a means of comfortably using a living space. However, not only does it consume a large amount of electric energy and go against the reduction of CO ₂ emissions, When the air conditioner is not operated due to the absence or the like, the above problem occurs. In order to solve such a problem, it has been strongly desired to provide a building material such as a board having excellent moisture absorption / release properties.

An object of the present invention is to provide a moisture-controlling fire-resistant building material having a moisture absorption / desorption property equal to or higher than that of a cedar product, and having excellent fire resistance and fire resistance.

[0007]

Means for Solving the Problems The invention according to claim 1 for solving the above problem is a moisture-controlling fire-prevention building material comprising a moisture-absorbing and releasing material having a particle size of 100 μm or less and a hydraulic substance.

The invention according to claim 2 has a particle size of 100 μm.
m is at least one selected from diatomaceous earth, silica gel, zeolite, sepiolite, apatulite, calcium silicate, allophane, white sand (whitebait), kaolinitic clay, aluminum oxide, charcoal, and activated carbon The moisture-controllable fireproof building material according to claim 1, which is composed of two or more types.

The invention according to claim 3 is characterized in that the hydraulic substance is:
The moisture-proof fireproof building material according to claim 1 or 2, comprising one or more selected from cement, slag, gypsum, calcium carbonate, magnesium carbonate, and calcium silicate.

The invention according to claim 4 has a particle size of 100 μm.
A moisture-controlling fire-protecting building material comprising a moisture-absorbing and desorbing material of m or less, a hydraulic substance and a filling substance.

The invention according to claim 5 has a particle size of 100 μm.
m is at least one selected from diatomaceous earth, silica gel, zeolite, sepiolite, apatulite, calcium silicate, allophane, white sand (whitebait), kaolinitic clay, aluminum oxide, charcoal, and activated carbon Two or more, the hydraulic substance is one or two or more selected from cement, slag, gypsum, calcium carbonate, magnesium carbonate, calcium silicate, and the filling substance is dihydrate gypsum, The humidity-controlling fireproof building material according to claim 4, wherein the fireproof building material comprises one or two or more kinds selected from calcium carbonate, perlite, slaked lime, and mica.

The invention according to claim 6 has a particle size of 100 μm.
m, a moisture-absorbing and desorbing material, a hydraulic material, a filler, and reinforcing fibers.

The invention according to claim 7 has a particle size of 100 μm.
m is at least one selected from diatomaceous earth, silica gel, zeolite, sepiolite, apatulite, calcium silicate, allophane, white sand (whitebait), kaolinitic clay, aluminum oxide, charcoal, and activated carbon The hydraulic substance is composed of one or more selected from cement, slag, gypsum, calcium carbonate, magnesium carbonate, calcium silicate, and the filling substance is dihydrate gypsum, One or more selected from calcium carbonate, perlite, slaked lime and mica, and the reinforcing fiber is selected from organic fibers such as pulp and vinylon and inorganic fibers such as glass fiber and rock wool. The moisture-controllable fire-prevention building material according to claim 6, which is one or more kinds.

The invention according to claim 8 has a particle size of 100 μm.
Water is added to a raw material mixture consisting of a moisture absorbing / desorbing material of m or less, a hydraulic substance, a filling substance, and a reinforcing fiber, kneaded to form a slurry, and a slurry is produced to obtain a plate-like material. Is the way.

[0015]

Since the present invention has the above-mentioned constitution, it is possible to provide a moisture-controlling fire-resistant building material having excellent moisture absorption / desorption properties equal to or higher than that of cedar lumber products and also having excellent fire resistance, fire resistance and design. .

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on preferred embodiments.

The moisture-controlling fire-prevention building material of the present invention is obtained by paper-making a slurry obtained by adding water to a mixed material of a moisture-absorbing / desorbing material having a limited particle size and a hydraulic material and kneading the mixture. As the papermaking method, a papermaking method using a well-known round mesh papermaking machine can be used.

Hereinafter, the component system of the humidity control fire-resistant building material of the present invention will be described. The moisture-controlling fire-prevention building material of the present invention basically comprises a moisture-absorbing and releasing material having a limited particle size and a hydraulic substance.

In the present invention, as the moisture absorbing / releasing material,
Diatomaceous earth, zeolite, zonotorite, sepiolite, apattalite, calcium silicate, allophane, white sand (whitebait), kaolinitic clay, aluminum oxide,
Charcoal and activated carbon can be used. These are all porous and have excellent moisture absorption / release properties.

In the present invention, the moisture absorbing / releasing material is added within a range of 2% to 90% in the compounding raw material. If the addition amount is less than 2%, the desired moisture absorption / release properties cannot be imparted to the moisture-controlling fireproof building material. On the other hand, an addition amount exceeding 90% lowers the hardness and flexural strength of the primary physical properties of the humidity control fireproof building material.
Preferably, it is in the range of 5% to 30%.

In the present invention, the particle size of the hygroscopic material is limited to 100 μm or less. When the particle size exceeds 100 μm, when the blended raw material slurry is wound up by a papermaking machine, the moisture absorbing and releasing material cannot be separated to form a uniform mat. Usually, the particle size is ≦ 70 μm. When using diatomaceous earth, the particle size range is preferably from 10 μm to 50 μm.
m.

By adding the hydraulic substance, the matrix can be firmly adhered to increase the strength of the moisture-controlling fireproof building material, and at the same time, properties such as hardening and molding can be easily and inexpensively provided. Base material). The hydraulic substance has fire resistance, fire resistance, and waterproofness. As the hydraulic substance, slag, cement, gypsum, calcium carbonate, magnesium carbonate, calcium silicate and the like can be used.

In the present invention, the hydraulic substance is 10%
It is blended within the range of ~ 98%. When the amount is less than 10%, it is difficult to exhibit strength imparting ability, waterproofness, curing properties, and molding properties. On the other hand, if it is added in excess of 98%, the moisture-controlling fire-resistant building material will increase in weight and crack due to drying and shrinkage.

Fillers are added to the raw material formulation as extenders. Gypsum dihydrate: 2% -30
%, Calcium carbonate: 5% to 20%, pearlite: 10
% To 15%, slaked lime: 1% to 1.5%, mica: 1% to 8%
% Can be used.

[0025] Gypsum has fire-resistant properties and fire resistance, has the advantage of being small in the amount of expansion and contraction caused by temperature changes, and has the advantages of being easily cured and formed, and has long been used as a fire-resistant material and a fire-resistant material. However, gypsum alone has drawbacks in that, even if it has primary physical properties, the bending strength is low and the screw nail holding force is weak. In the present invention, this point is complemented by the addition of the organic reinforcing fiber and the hydraulic substance.

Gypsum is 2% to 3% by weight (the same applies hereinafter).
0% is added. Gypsum also has the effect of accelerating the hardening of hydraulic substances such as slag and cement by hydration.
%, It is difficult to exhibit the effect of addition. on the other hand,
When added in excess of 30%, properties such as strength imparting ability and waterproofness, curability, and moldability due to hydraulic substances such as slag and cement are reduced. In addition, the primary physical properties decrease bending strength and screw nail holding power.

Perlite increases the fire resistance of the product and
It is also added as a lightweight aggregate for the purpose of reducing the weight of a moisture-control fireproof building material. If it is added in excess of 15%, the balance between the moisture absorption / release properties and the primary physical properties of the moisture-controlling fireproof building material is impaired.

Calcium carbonate is conventionally used as a main raw material of Portland cement. In the present invention, calcium carbonate is used as an extender and is added in the range of 5% to 20%. If the addition amount is less than 5%, the effect of addition is small.
If the amount exceeds 0%, the weight of the product increases.

As the organic reinforcing fiber for improving the strength of the humidity control fire-resistant building material, for example, pulp is added for the purpose of improving the papermaking property. In the present invention, 3% to 5%
Add within the range. If the amount is less than 3%, the effect of improving the strength and workability of the moisture-controlling fireproof building material cannot be exhibited.
On the other hand, if the added amount exceeds 5%, the properties of the moisture-controlling fireproof building material as a non-combustible material are lost from where the pulp is an organic material. As the organic reinforcing fiber, vinylon or the like can be used in addition to pulp.

Like the organic reinforcing fibers, inorganic fibers such as rock wool are added to improve the strength of the moisture-controlling fire-resistant building material and to improve the processability. In the present invention, it is added within the range of 1% to 8%. If the addition amount is less than 1%, the portion contributing to the strength improvement is small.
%, The kneading operation is hindered, and further, fiber agglomerates called lumps coexist, thereby impairing the uniformity of the material of the humidity-controlling fireproof building material.

In the present invention, one or both of the organic reinforcing fibers and the inorganic fibers are added.

[0032]

EXAMPLES Example 1 By weight, gypsum dihydrate: 16.5%, blast furnace slag: 40%,
Cement: 3%, calcium carbonate: 12%, diatomaceous earth: 2
Water is added to a raw material composition having a composition of 0% (average particle size: 30 μm), pulp: 5%, rock wool: 3%, and coloring pigment: 0.5%, and the mixture is kneaded. Papermaking speed: 40 m / min.
The temperature was raised stepwise to a temperature around 70 ° C., and steam (90% RH) curing was performed at a temperature of 70 ° C. for 20 hours. Thereafter, natural curing was performed for 100 hours. Then, after drying in a dryer at 180 ° C. for 10 minutes, cutting was performed to obtain a thickness of 6
mm, width: 910 mm, and length: 1820 mm were obtained.

The humidity control properties of the obtained fireproof building materials were tested. The result is shown in FIG. As is clear from FIG.
The moisture-controlling fireproof building material of the present invention has excellent moisture absorption / release properties as compared with commercially available building materials in which wallpaper is stuck to a gypsum board.

Example 2 By weight, gypsum dihydrate: 12%, blast furnace slag: 37%, cement: 3%, calcium carbonate: 4.5%, zeolite:
Water is added to a raw material composition having a composition of 35% (average particle size: 30 μm), pulp: 5%, rock wool: 3%, and coloring pigment: 0.5%, and the mixture is kneaded, and the obtained slurry is made into a round net papermaking. Papermaking speed: 35 m / min.
The temperature was raised stepwise to around 0 ° C., and steam (90% RH) curing was performed at a temperature of 70 ° C. for 20 hours. Thereafter, natural curing was performed for 100 hours. Then, in a dryer, 180 ℃
After drying for 10 minutes at, a cutting process is performed to obtain a thickness:
6 mm, width: 910 mm, and length: 1820 mm were obtained.

Example 3 By weight, gypsum dihydrate: 16.5%, blast furnace slag: 40%,
Cement: 3%, calcium carbonate: 12%, zonotolite: 20% (average particle size: 18 μm), pulp: 5%, rock wool: 3%, coloring pigment: 0.5% The mixture was kneaded and kneaded, and the resulting slurry was paper-milled at a paper-gathering speed of 40 m / min using a round-mesh paper-making machine. Then, the temperature was raised stepwise to around 70 ° C.
Steam (90% RH) curing for 0 hours. Thereafter, natural curing was performed for 100 hours. Then, in the dryer, 1
After drying at 80 ° C. for 10 minutes, a cutting process was performed to obtain a humidity-controlling fireproof building material having a thickness of 6 mm, a width of 910 mm, and a length of 1820 mm.

Example 4 By weight, gypsum dihydrate: 16.5%, blast furnace slag: 40%,
Cement: 3%, calcium carbonate: 7%, diatomaceous earth: 20
% (Average particle size: 32 μm), silica gel: 5% (average particle size: 40 μm), pulp: 5%, rock wool: 3%,
Colored pigment: water is added to the raw material mixture having a composition of 0.5% and kneaded, and the resulting slurry is formed at a paper forming speed of 40 m / min using a round-mesh paper machine, and then at about 70 ° C. Up to 70 ° C for 20 hours with steam (90% R
H) Cured. Thereafter, natural curing was performed for 100 hours. Then, after drying in a dryer at 180 ° C. for 10 minutes, a cutting process is performed to obtain a thickness: 6 mm and a width:
A moisture-controlling fireproof building material having a length of 910 mm and a length of 1820 mm was obtained.

Example 5 By weight, gypsum dihydrate: 16.5%, blast furnace slag: 35%,
Cement: 3%, calcium carbonate: 12%, calcium silicate: 5%, zonotolite: 7% (average particle size: 18μ)
m), diatomaceous earth: 13% (average particle size: 40 μm), pulp: 5%, rock wool: 3%, coloring pigment: 0.5%, water was added to the raw material composition, and the resulting slurry was kneaded. Using a round-mesh paper machine at a papermaking speed of 40 m / min.
At 90 ° C. for 20 hours. Thereafter, natural curing was performed for 100 hours. Then, after drying in a dryer at 180 ° C. for 10 minutes, cutting is performed to obtain a thickness: 6 mm, a width: 910 mm, and a length: 1
An 820 mm humidity-controlling fireproof building material was obtained.

Example 6 By weight, gypsum dihydrate: 13.5%, blast furnace slag: 35%,
Cement: 3%, calcium carbonate: 7%, magnesium carbonate: 3%, zeolite: 15% (average particle size: 25μ)
m), silica gel: 3% (average particle size: 40 μm), diatomaceous earth: 12% (average particle size: 50 μm), pulp: 5%, rock wool: 3%, coloring pigment: 0.5% Water was added and kneaded, and the resulting slurry was paper-milled at a paper-milling speed of 37 m / min using a round-mesh paper mill, and then the temperature was raised stepwise to around 70 ° C.
Steam (90% RH) curing for 0 hours. Thereafter, natural curing was performed for 100 hours. Then, in the dryer, 1
After drying at 80 ° C. for 10 minutes, a cutting process was performed to obtain a humidity-controlling fireproof building material having a thickness of 6 mm, a width of 910 mm, and a length of 1820 mm.

Example 7 By weight, gypsum dihydrate: 12.5%, blast furnace slag: 30%,
Cement: 3%, calcium carbonate: 10%, calcium silicate: 9%, zonotolite: 15% (average particle size: 30μ)
m), silica gel: 7% (average particle size: 25 μm), white sand (whitebait): 5% (average particle size: 53 μm), pulp: 5
%, Rock wool: 3%, coloring pigment: 0.5%, and kneaded by adding water to the raw material mixture, and the resulting slurry was formed using a round-mesh paper machine at a papermaking speed of 40 m / min. Paper-making,
Next, the temperature was raised stepwise to around 70 ° C., and steam (90% RH) curing was performed at a temperature of 70 ° C. for 20 hours. Then 10
Natural curing was performed for 0 hours. Then, after drying in a dryer at 180 ° C. for 10 minutes, a cutting process is performed to obtain a thickness: 6 mm, a width: 910 mm, and a length: 1820.
mm was obtained.

Example 8 By weight, gypsum dihydrate: 12.5%, blast furnace slag: 36%,
Cement: 3%, calcium carbonate: 10%, magnesium carbonate: 3%, zeolite: 18% (average particle size: 30μ)
m), silica gel: 7% (average particle size: 25 μm), charcoal: 2% (average particle size: 27 μm), pulp: 5%, rock wool: 3%, coloring pigment: 0.5% Water was added and kneaded, and the resulting slurry was formed into a paper using a round-mesh paper-making machine at a paper-making speed of 40 m / min.
The temperature was raised stepwise to around 70 ° C., and steam (90% RH) curing was performed at a temperature of 70 ° C. for 20 hours. Thereafter, natural curing was performed for 100 hours. Then, in the dryer, 180
After drying at 10 ° C. for 10 minutes, a cutting process was performed to obtain a humidity-controlling fire-resistant building material having a thickness of 6 mm, a width of 910 mm and a length of 1820 mm.

Example 9 By weight, gypsum dihydrate: 8.5%, blast furnace slag: 35%, cement: 3%, diatomaceous earth: 45% (average particle size: 30 μm)
m), pulp: 5%, rock wool: 3%, coloring pigment:
Water is added to the raw material mixture having a composition of 0.5% and the mixture is kneaded, and the obtained slurry is subjected to a papermaking speed of 40 using a round-mesh papermaking machine.
The paper was formed at a rate of m / min, and the temperature was raised stepwise to around 70 ° C., followed by curing at 90 ° C. for 20 hours with steam (90% RH). Thereafter, natural curing was performed for 100 hours. After that,
After drying at 180 ° C. for 10 minutes in a dryer, cutting is performed to obtain a thickness: 6 mm, a width: 910 mm,
A moisture control fireproof building material having a length of 1820 mm was obtained.

[0042]

According to the present invention, it is possible to provide a building material having a moisture absorption / desorption property equal to or higher than that of a cedar lumber product and having excellent fire resistance and fire resistance.

According to the fourth and fifth aspects of the present invention, in addition to moisture absorption / desorption properties, fire resistance and fire resistance, moldability and weight reduction can be further added to the humidity control fireproof building material.

According to the inventions described in claims 6 and 7, the primary physical properties of the moisture-controllable fireproof building material can be improved, and the papermaking properties can be improved.

According to the eighth aspect of the present invention, it is possible to manufacture a moisture-controlling fire-resistant building material excellent in moisture absorption / release properties, fire resistance and fire resistance with high productivity.

[Brief description of the drawings]

FIG. 1 is a graph showing the results of a humidity control test in one embodiment of a fire control building material of the present invention.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04C 2/26 E04C 2/26 P QS // (C04B 28/00 C04B 14:08 14:08 14: 10 B 14:10 Z 14:36 14:36 14:04 Z 14:04 14:26 14:26 18:10 B 18:10 14:30 14:30 14:18 14:18 14:20 A 14: 20 16:02 Z 16:02 14:46 14:46) 111: 28 111: 28 F term (reference) 2E001 DE01 FA10 FA14 GA12 HA01 HA03 HA21 HA22 HA23 HA28 HC05 HF04 JA01 JA02 JA04 JC09 2E162 DA06 FA01 FA02 FA04 FA09 FB03 FC01 FC05 4G012 PA03 PA05 PA06 PA07 PA08 PA10 PA11 PA14 PA18 PA22 PA26 PC11 PC15 PD03 PE04 4G019 LA02 LA04 LB01 LB02 LC02 LC03 4G052 EA02 EA03 EA04 EA07 EB02

Claims (8)

[Claims] 1. A moisture-controlling fireproof building material comprising a moisture-absorbing and releasing material having a particle size of 100 μm or less and a hydraulic substance. 2. The hygroscopic material having a particle size of 100 μm or less is diatomaceous earth, silica gel, zeolite, sepiolite,
Apatulite, calcium silicate, allophane, white sand (whitebait), kaolinitic clay, aluminum oxide,
The moisture-controllable fire-prevention building material according to claim 1, comprising one or more selected from charcoal and activated carbon. 3. The preparation according to claim 1 or 2, wherein the hydraulic substance comprises one or more selected from cement, slag, gypsum, calcium carbonate, magnesium carbonate, and calcium silicate. Wet fire protection building materials. 4. A humidity control fire-resistant building material comprising a moisture absorbing / releasing material having a particle size of 100 μm or less, a hydraulic substance and a filling substance. 5. The moisture-absorbing and desorbing material having a particle size of 100 μm or less is diatomaceous earth, silica gel, zeolite, sepiolite,
Apattalite, calcium silicate, allophane, white sand, kaolinite clay, aluminum oxide, charcoal, and one or more selected from activated carbon,
The hydraulic substance is selected from cement, slag, gypsum, calcium carbonate, magnesium carbonate, calcium silicate 1
A seed or two or more kinds, and the filling substance is gypsum dihydrate, calcium carbonate, perlite, slaked lime,
The humidity-controlling fire-resistant building material according to claim 4, wherein the fire-resistant building material comprises one or more kinds selected from mica. 6. A moisture-controlling fireproof building material comprising a moisture-absorbing and releasing material having a particle size of 100 μm or less, a hydraulic substance, a filling substance, and a reinforcing fiber. 7. The hygroscopic material having a particle size of 100 μm or less is diatomaceous earth, silica gel, zeolite, sepiolite,
Apattalite, calcium silicate, allophane, white sand, kaolinite clay, aluminum oxide, charcoal, and one or more selected from activated carbon,
The hydraulic substance is selected from cement, slag, gypsum, calcium carbonate, magnesium carbonate, calcium silicate 1
One or more species, wherein the filling substance is
One or more selected from gypsum, calcium carbonate, perlite, slaked lime, and mica, and the reinforcing fibers are organic fibers such as pulp and vinylon and inorganic fibers such as glass fibers and rock wool. The moisture-proof fireproof building material according to claim 6, wherein the fireproof building material comprises at least one member selected from the group consisting of: 8. A raw material mixture comprising a hygroscopic material having a particle size of 100 μm or less, a hydraulic material, a filling material, and a reinforcing fiber, is added with water and kneaded to form a slurry. Method for producing a moisture-controllable fireproof building material.