JP3033950B2 - Refractory liquid, method for producing the same, and refractory building material and refractory adhesive using the refractory liquid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inorganic reaction product, a refractory liquid having a high refractory property, a method for producing the same, and a refractory building material and a refractory adhesive using the refractory liquid. It is another object of the present invention to provide a building material excellent in sound insulation and heat insulation and an adhesive excellent in fire resistance.

[0002]

2. Description of the Related Art Conventionally, a refractory composite material obtained by reacting an inorganic material is known (Japanese Patent Publication No. 7-365). Conventionally, tiles, asbestos, asbestos, asbestos, and the like are known as materials having excellent fire resistance in the interior or exterior of a building. In addition, foamed synthetic resin, fiberboard, asbestos, rock wool, and the like are known as materials having excellent sound insulation properties, and water glass is known as a fire-resistant adhesive.

[0003]

The above-mentioned conventional refractory composite material uses various and complicated materials, and sometimes generates a harmful gas at the time of a reaction for producing the composite material.

Further, conventional materials having excellent fire resistance are inferior in sound insulation, while materials having excellent sound insulation are inferior in fire resistance. In addition, asbestos and rock asbestos, which are excellent in both fire resistance and sound insulation, are restricted in their use because the dust has a bad effect on health. Further, conventionally, there has been no known useful fire-resistant adhesive used for forming a laminated material for building materials.

Further, synthetic resins used for various interior and exterior products have not only extremely low fire resistance, but also are unsuitable as house building materials because they generate toxic gas by burning.

On the other hand, concrete, steel bars, steel frames, etc., which are widely used as structures of buildings,
There is a problem that the strength is rapidly reduced. Further, there has been a problem that conventional air-tight agents such as various adhesives or joints are inferior in fire resistance.

[0007]

According to the present invention, a water-soluble refractory liquid is obtained by reacting potassium hydroxide, sodium carbonate, metal silicon and water to solve the above-mentioned conventional problems. .

That is, the refractory liquid of the present invention is a refractory liquid produced by reacting potassium hydroxide, sodium carbonate, metal silicon and water. Here, potassium hydroxide is used in the form of granules, sodium carbonate is used in the form of powder, and metal silicon is used for the reaction. This refractory fluid
Inject the granular potassium hydroxide into the reaction tank, then add the powdered sodium carbonate, then add the lump of metal silicon, and finally add water, the reaction will start naturally in the reaction tank It is a product that is produced. The production reaction requires 2 hours to 10 hours. If the amount of potassium hydroxide or the like to be subjected to the reaction is small, the reaction time is shortened. Conversely, if the amount of potassium hydroxide or the like is large, the reaction time required for generating the refractory liquid is long. However, the reaction time can be shortened if the water to be subjected to the reaction is heated to 40 ° C. to 50 ° C. in advance and then added.

In the above, as sodium carbonate,
It is preferable to use an anhydrous salt of sodium carbonate (commonly called "soda ash"). As the above-mentioned granular potassium hydroxide, powdery anhydrous sodium carbonate (soda ash), and bulk metallurgy, any of those commercially available in this state can be used.

In the above, the refractory liquid of the present invention is produced by reacting granular potassium hydroxide, powdered sodium carbonate, metal silicon lumps and water for 2 to 10 hours. The temperature during this reaction is 60 ° C to 90 ° C.
become.

Since the generated refractory liquid is water-soluble, the concentration of the generated refractory liquid can be freely adjusted by increasing or decreasing the amount of water used for the reaction.

For example, when a refractory layer is formed by using the generated refractory liquid alone, the amount (weight) of water used for the reaction is, for example, potassium hydroxide in order to increase the concentration of the refractory liquid relatively. And about four times the sum of the weights of sodium carbonate and sodium carbonate. With less water,
For example, it is possible to produce a refractory liquid with a very high concentration by about 2.5 times. However, if the amount (weight) of water is smaller than this, it is not preferable because the refractory liquid generation reaction does not proceed smoothly.

On the other hand, when the generated refractory liquid is applied or sprayed alone, the concentration of the refractory liquid should be relatively low.
The amount (weight) of water to be used for the reaction is preferably, for example, about 4.4 times the total weight of potassium hydroxide and sodium carbonate. It is also possible to increase the amount of water more than this. When the generated refractory liquid is mixed with a coating material such as paint and used, the amount (weight) of water used for the reaction is
4.7 of the total weight of potassium hydroxide and sodium carbonate
It can be doubled. However, if the concentration of the refractory liquid is too low, the fire resistance is reduced. Therefore, the amount (weight) of water used for the reaction is preferably suppressed to about 4.7 times the total weight of potassium hydroxide and sodium carbonate. .

When coke (about 10% by weight) is added to the above-mentioned refractory liquid, a glossy film is formed upon application and drying.

When casein (1 to 10% by weight) is added to the refractory liquid, the refractory liquid becomes less soluble in water.
Also, when about 10% by weight of coke and about 10% by weight of fluorine are added, the refractory liquid becomes difficult to dissolve in water.

In the present invention, the refractory liquid is mixed with plant particles, and the mixture is subjected to pressure molding, preferably from 180 ° C to 200 ° C.
C. A refractory building material characterized by being pressed by a hot press, and a viscous liquid obtained by mixing bentonite and fiber with the refractory liquid is laminated on one or both surfaces of a wooden board, a paper board, a metal board, and a synthetic board. We propose a fire-resistant building material characterized by being formed by molding. Thus, if a veneer plate is manufactured using the refractory liquid according to the present invention, formalin or the like conventionally used for veneer plate manufacture becomes unnecessary, and a harmless veneer plate can be manufactured.

That is, the above-mentioned refractory liquid proposed by the present invention is applied to one or both sides of a wooden board, a synthetic wood board, a laminated wood, a paper board (for example, a press-formed paper board), a metal board, etc. Can be used as building material. For example, the refractory liquid of the present invention is applied to the surface of a wooden board having a thickness of 5 to 10 mm to a thickness of 1 to 3 mm, dried for 2 to 10 hours, and heated by bringing a gas burner flame (1000 ° C.) close to the applied surface. As a result, it was confirmed that the fuel did not burn for 1 to 3 minutes. As a test control, a homogeneous wood board (5 to 10 mm thick) to which the refractory liquid of the present invention was not applied was heated by a gas burner (1000 ° C.) and burned in 2 to 5 seconds.

The present invention also proposes a fire-resistant building material having excellent fire resistance, excellent sound insulation and excellent heat insulation using the above-mentioned fire-resistant liquid of the present invention. The present invention proposes an adhesive having excellent fire resistance using the refractory liquid described above.

That is, bentonite and Chinese cotton are added to the above-mentioned refractory liquid of the present invention to form a mixture, and a non-combustible cotton sheet (blanket) is adhered to the base plate via the mixture to provide fire resistance and fire resistance. A fire-resistant building material with excellent sound insulation can be provided. Here, a paper plate, a wooden plate, a glass plate, a metal plate or a concrete plate can be used as the base plate, and stainless steel or ceramics cotton can be used as the non-combustible cotton plate. As described above, as the base plate, any of a combustible material (for example, a paper plate, a wooden plate, a synthetic plate, and a glass plate) and a non-combustible material (concrete, a metal material, and a ceramic molded plate) can be used. In addition, as the non-combustible cotton, metal cotton, rock wool, asbestos, glass cotton, or the like can be used. Other than these, any non-combustible cotton made of a fiber that can maintain its shape without burning even at a high temperature such as a fire can be used.

Also, if the above-mentioned refractory liquid of the present invention is mixed with bentonite, Chinese cotton and bengel 31 and mixed uniformly, an adhesive having excellent fire resistance can be produced.

As described above, when an adhesive having excellent fire resistance is produced by using the above-described refractory liquid of the present invention, the refractory liquid contains 50% to 70% by weight of bentonite, By adding 0.5% to 1.5% by weight of Chinese cotton of the refractory liquid and 1% to 2.5% by weight of bengel 31 of the refractory liquid and stirring, excellent fire resistance is obtained. Adhesive can be provided.

The refractory liquid of the present invention described above may further comprise 50% to 70% by weight of bentonite, 0.5% to 1.5% by weight of the refractory liquid, and Chinese cotton. Wenger 31 of 1% to 2.5% by weight of the refractory liquid, 0.1% to 0.3% of graphite of the refractory liquid, and 0.05% to 0.1% of the refractory liquid. By mixing with carbon fiber and stirring, an adhesive having excellent fire resistance can be provided.

The sawdust, sawdust, rice husk, cork waste, paper waste, crushed synthetic resin (recycled waste) and the like can be formed into a plate using the adhesive having excellent fire resistance according to the present invention thus produced. it can. Sawdust, sawdust, rice hulls and the like formed in such a plate shape are excellent in sound insulation and nonflammability.

If the adhesive having excellent fire resistance according to the present invention produced as described above is used as an adhesive in the production of veneer boards, the conventionally used formalin and the like become unnecessary, and the production of harmless veneer boards can be avoided. Becomes possible.

Further, using the adhesive having excellent fire resistance according to the present invention produced as described above, paper, fiber, sawdust and the like having high sound insulation properties are adhered to form a paper board, fiber board, saw board and the like. By doing so, it is possible to provide a building material that is excellent in sound insulation and fire resistance.

The above-mentioned refractory adhesive of the present invention can be used for building materials in the same manner as the above-mentioned refractory liquid, but can be used for strong adhesion between various materials irrespective of combustible building materials and non-combustible building materials. .

Further, as described above, Chinese cotton and Wengel 3
The refractory adhesive of the present invention obtained by mixing graphite and carbon fiber in place of 1 can be used as a refractory putty or joint material. Since this joint material does not crack or shrink even in the event of a fire, it has the advantage that fire spread can be prevented.

[0028]

Example 1 8 kg of granular potassium hydroxide, 7 kg of powdered sodium carbonate (soda ash) (manufactured by Asahi Glass Co., Ltd.), and 30 kg of metal silicon lump were sequentially charged into a reaction vessel. Next, 60 liters of water are charged.

Thus, it was confirmed that the reaction started spontaneously, the reaction started violently from the lowermost layer of potassium hydroxide, and convection from the lower side to the upper side occurred in the reaction tank. The reaction temperature rises spontaneously, and exhibits the most active reaction state when the reaction temperature is in the range of 80 ° C to 90 ° C. The reaction temperature did not exceed a maximum of 92 ° C.

Since the reaction was completed in about 10 hours, solids were separated and about 48 liters (about 70 liters) of the refractory liquid of the present invention were used.
kg) could be produced.

The remaining solid was a lump of metal silicon, and after washing with water, about 22 kg of lump of metal silicon remained. Approximately 8
A lump of metal silicon of about kg is added, and a total of 30 kg of metal silicon can be used for the second reaction.

That is, similarly to the first time, 8 kg of granular potassium hydroxide and 7 kg of powdered sodium carbonate (soda ash) (manufactured by Asahi Glass Co., Ltd.) were charged into the reaction vessel, and then 1
22 kg of metal silicon lump remaining in the second generation reaction
And 8 kg of a new mass of metal silicon are sequentially charged, and then 60 liters of water are charged, whereby a second refractory liquid generation reaction is started.

In this embodiment, first, granular potassium hydroxide is charged, powdered sodium carbonate (soda ash) is charged thereon, and a lump of metal silicon is further placed thereon, followed by water. It was most preferable to make the charging order for the production of the refractory liquid of the present invention.
This is probably because the lowermost layer of potassium hydroxide starts reacting first, so that active convection up and down can be generated.

In this embodiment, the refractory liquid produced is
It is relatively dense and can be coated on a flammable plate, such as a wooden board, to obtain a refractory material covered with a refractory layer. A gas burner (1
(000 ° C.), it did not burn even after 30 minutes.

Further, while keeping the amounts of granular potassium hydroxide, powdery sodium carbonate (soda ash) and metal silicon lumps to be used for the reaction in the same manner as in this embodiment, the amount of water to be introduced was reduced to about 70 liters. It is also possible to increase it. When the amount of water to be charged is increased to 70 liters, the concentration of the generated refractory liquid becomes relatively small. 70% by weight of this refractory liquid and 20% by weight of a commercially available paint
If 10% by weight of Chinese cotton is mixed, a fireproof paint for interior of a building can be obtained. When the fire-resistant paint is applied 3 to 5 times (thickness 2 to 3 mm) for interior use in a building, a fire-resistant wall can be formed even when the base material is a flammable material.

In this case, as the amount of water to be supplied increases, the amount of metal silicon remaining at the end of the refractory liquid generation reaction also increases. When the amount of water to be charged was increased to 70 liters while keeping the amount of granular potassium hydroxide, powdered sodium carbonate (soda ash), and metal silicon to be used for the reaction as in this example, 25 kg
Lump of metal silicon remained.

[0037]

Embodiment 2 3 kg of granular potassium hydroxide, 2 kg of powdered sodium carbonate (soda ash), lump of metal silicon 15
The reaction was caused by adding 20 kg of water to kg. Reaction temperature is 8
The temperature was raised from 0 ° C. to 90 ° C., and the reaction was completed in 2 to 5 hours, thereby producing 22 kg to 26 kg of the refractory liquid of the present invention.

The metal silicon used in the above reaction is not completely used for the reaction but remains after the reaction. Therefore, the remaining metal silicon is washed, and additional metal silicon is added thereto to add the metal silicon. Total amount of 1
5 kg can be used for the second production reaction.

The refractory liquid generated as described above has a pH of PH10 to PH
12 aqueous solution.

The refractory liquid 70% by weight and commercially available paint 20
By mixing 10% by weight with 10% by weight of Chinese cotton, a fireproof paint for building interiors can be obtained. Here, fireproof paint can be produced without mixing Chinese cotton, but in order to enhance fire resistance,
It is preferable to add Chinese cotton as well.

The above-mentioned fire-resistant paint is used for interior of a building.
When used by coating up to 5 times (thickness: 2 to 3 mm), a fire-resistant wall can be formed even when the base material is a flammable material.

Here, when the amount of water used for the reaction is reduced, the viscosity of the generated refractory liquid increases. On the other hand, if the amount of water is increased, the generated refractory liquid becomes pale, which is convenient for application.

In the case of this embodiment, the amounts of potassium hydroxide, sodium carbonate (soda ash) and metal silicon used in the production reaction are the same as in this embodiment, and the amount of water to be charged is increased to 24 kg. In addition, a refractory liquid having a concentration just enough to be mixed with a coating material such as paint can be produced.

[0044]

Example 3 4 kg of granular potassium hydroxide, 3 kg of powdered sodium carbonate (soda ash), 8 kg of metal silicon lump
The reaction is started by adding 32 liters of water to the flask. The reaction temperature rose from 60 ° C to 90 ° C, and the reaction was completed in 4 hours. After completion of the reaction, the solid is separated to obtain 18 to 25 liters (about 32 kg) of the refractory liquid of the present invention.

The solid separated here is the remainder of the initially charged metal silicon. The remaining metal silicon is washed, and additional metal silicon is added thereto to make the total amount of the metal silicon 8 kg, which can be used for the second generation reaction.

4 liters of water is added to the refractory liquid produced in this example, and the mixture is uniformly stirred and applied to a base plate to obtain a refractory building material having a refractory layer.

[0047]

Example 4 50% by weight of the refractory liquid obtained in Example 2 was added to 50% by weight of a mixture of chopsticks or rice husk alone or mixed, and then uniformly mixed.
Pressure molding was performed at a temperature of 10 ° C. to obtain a refractory plate having a thickness of 10 mm. A gas burner flame (1000 ° C.) was heated close to the refractory plate for 30 minutes, but did not burn. In the above, in the case of mixing (or solely) husks, the surface of the refractory plate was vitrified by heating.

[0048]

Example 5 A viscous material obtained by mixing 45% by weight of bentonite and 15% by weight of Chinese cotton with 40% by weight of the refractory liquid obtained in Example 2 on the surface of a wooden board having a thickness of 10 mm and stirring uniformly. Liquid
After coating to a thickness of 2.5 mm, it was air-dried to obtain a fire-resistant plate. A gas burner flame (1000
(° C.) was not burned even after 5 minutes.

[0049]

Embodiment 6 After mixing the refractory liquid of the present invention produced in Embodiment 2 with paint, the mixture is applied to both upper and lower surfaces of a wooden board 1 having a thickness of 10 mm to form coating layers 2 and 2a having a thickness of 2 to 3 mm. Thus, a refractory building material 3 was constructed (FIG. 1).

When a flame of a gas burner (1000 ° C.) was blown on the surface of the refractory building material 3, it did not burn for 3 minutes.

For comparison, a 10 mm thick wooden board without the coating layer was blown with a gas burner (1000 ° C.) flame and burned in 3 seconds.

[0052]

Example 7 Using the refractory liquid of the present invention produced in Example 2 above, the refractory liquid was 60% by weight, 1.0% by weight of Chinese cotton, 30% by weight of bentonite, and 9% by weight of bentonite. The mixture was mixed with Wengel 31 and stirred to produce a refractory adhesive.
This refractory adhesive is applied on the upper surface of the wooden board 1 having a thickness of 10 mm to a thickness of 2.5 mm to form a refractory layer 4 and a thickness of 1 mm on the upper surface.
A 0 mm metal blanket (blanket) 5 (commercially available, manufactured by Nippon Steel Co., Ltd. or Isolite Co., Ltd.) was stacked and fixed to form a fire-resistant building material 6 of the present invention (FIG. 2).

The refractory building material 6 is provided with a gas burner (1000
C.), and when the flame was blown, the metal cotton glowed red in 2 minutes, but the wood board did not burn even after 30 minutes.

[0054]

Embodiment 8 2.5 kg of bentonite, 40 g of Chinese cotton and 80 g of Wengel 31 as a thickener are added to 4 liters of the refractory liquid of the present invention produced in the above-mentioned Example 2 and uniformly mixed. 8 to 10 kg of fire resistant adhesive was obtained.

[0055]

Example 9 2.5 kg of bentonite, 40 g of Chinese cotton, 80 g of bengel 31, 4 g of graphite and 2 g of carbon fiber were added to 4 liters of the refractory liquid of the present invention produced in the above-mentioned Example 2, and the mixture was homogenized. When mixed, 8 kg to 8.5 kg of the refractory joint material of the present invention could be produced.

[0056]

The refractory liquid of the present invention can be mass-produced by a simple manufacturing method, and the raw materials can be procured inexpensively and easily, so that the production cost of the refractory liquid can be kept extremely low. If the refractory liquid of the present invention is applied to one or both surfaces of a flammable material such as a wooden board or a paper board, it can be treated to be nonflammable or even nonflammable.

The refractory liquid of the present invention is water-soluble, and the concentration of the reaction liquid to be produced can be freely adjusted by adjusting the amount of water used for the reaction. If a slight treatment is further performed, it becomes a polishing liquid, and in addition, there is such a characteristic that no toxic gas is generated even when heated.

Further, the refractory liquid of the present invention is applied to a base plate to a predetermined thickness and dried, or the paint containing the refractory liquid of the present invention is applied to a predetermined thickness and dried. The combustible material can be changed to a non-combustible building material. Furthermore, if a fire-resistant material such as metal cotton is layered, a fire-resistant building material having excellent fire resistance and sound insulation properties can be obtained.

The building material of the present invention thus produced is
There is no danger of generating toxic gas even when heated at high temperature, and it is effective for protecting human life and preserving property. On the other hand, since it can be cut freely with a saw or the like, it has good moldability and is excellent as a fire-resistant building material.

The refractory adhesive produced by using the refractory liquid of the present invention is excellent in adhesion of various materials and has various effects such as being able to be used for putty or joints of buildings and the like.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a fire-resistant building material of the present invention.

FIG. 2 is a partial cross-sectional view of another refractory building material of the present invention.

[Explanation of symbols]

 Reference Signs List 1 wood board 2, 2a paint layer 3, 6 fire-resistant building material 4 fire-resistant layer 5 metal cotton

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) E04B 1/94 B32B 7/12 C09J 1/00

Claims (12)

(57) [Claims] 1. A refractory liquid produced by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water. 2. A method for producing a refractory liquid, which is produced by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water. 3. A fire-resistant building material characterized by mixing a refractory liquid obtained by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water with plant particles and press-forming. 4. A viscous liquid obtained by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water with bentonite and fibers, and a viscous liquid obtained by mixing bentonite and fibers with a wooden board, a paper board, a metal board, and a synthetic board. A fire-resistant building material characterized by being layered on one or both surfaces. 5. A refractory building material characterized in that a refractory liquid obtained by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water is layered on one or both sides of a base plate. 6. The fire-resistant building material according to claim 5, wherein the base plate is a paper plate, a wooden plate, a glass plate, a metal plate or a concrete plate. 7. A mixture is formed by adding bentonite and Chinese cotton to a refractory liquid obtained by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water with each other, and forming a mixture through the mixture. A fire-resistant building material obtained by bonding a non-combustible cotton sheet to a fire-resistant material. 8. The fire-resistant building material according to claim 7, wherein the base plate is a paper plate, a wooden plate, a glass plate, a metal plate or a concrete plate. 9. The fire-resistant building material according to claim 7, wherein the non-combustible cotton sheet is a stainless steel sheet or a ceramic cotton sheet. 10. A refractory liquid obtained by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water with bentonite, Chinese cotton and bengel 31, and the mixture is stirred and mixed. And refractory adhesive. 11. A refractory liquid obtained by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water with 50% to 70% by weight of bentonite and 50% by weight of the refractory liquid. 0.5% to 1.5% by weight of Chinese cotton and 1% to 2.5% by weight of the refractory liquid Wengel 31 are added, stirred and mixed to produce fire resistance. adhesive. 12. A refractory liquid obtained by reacting potassium hydroxide, sodium carbonate (soda ash), metal silicon and water with 50% to 70% by weight of bentonite and 50% by weight of the refractory liquid. 0.5% to 1.5% by weight of Chinese cotton, 1% to 2.5% by weight of the refractory liquid Wengel 31, and 0.1% to 0.3% by weight of the refractory liquid A fire-resistant adhesive characterized in that graphite and 0.05% to 0.1% by weight of said refractory liquid are mixed with carbon fibers.