KR102221343B1 - Manufacturing method of fire-proof insulation material using ceramic - Google Patents

Abstract

The present invention relates to a method of manufacturing a non-combustible heat insulating material using ceramic, comprising: a raw material dissolving process (step S1) for obtaining a dissolved product by dissolving silicon (Si) in hydrofluoric acid; A ceramic raw material preparation step (S2 step) of adding aluminum (Al), titanium (Ti), and zirconium (Zr) to the melt to obtain a ceramic raw material; A ceramic foaming step (S3 step) of heating the ceramic raw material obtained in the ceramic raw material preparation step (S2 step) to a temperature of 1,100°C to 1,200°C and then temporarily exposing it to the atmosphere to obtain a foamed ceramic; A mixing process of forming a mixture by mixing the foamed ceramic with a liquid silicate in a weight ratio of 1: 1 (step S4); A molding process (S5 step) of molding the mixture; It consists of a drying process (S6 step) of drying the molded product, and by mixing foamed ceramic and liquid silicate to manufacture an insulation material, fire can be prevented, and negative ions without the occurrence of sick house syndrome causing atopic dermatitis and allergic diseases. And by emitting far-infrared rays, the body maintains the health of the body by discharging wastes accumulated in the body, and the construction material waste is made into an eco-friendly material rather than a pollutant. It is light in weight and has strong strength as well as ductility. It is a useful invention that has a special advantage of economical efficiency by improving productivity because it is easy to mold and manufacture into a shape according to use such as a wall plate, frame, panel, etc., and significantly reduces the need for materials, manpower, and labor costs.

Description

Manufacturing method of fire-proof insulation material using ceramic

The present invention relates to a method of manufacturing a building material for a non-combustible insulating material, and more specifically, a ceramic raw material obtained by mixing a viscosity agent in which silica fine particles made by a dry method are dissolved to prepare a liquid silica, and foaming the raw material in a natural state into the liquid silica. The present invention relates to a method of manufacturing a non-combustible insulation material using ceramics with high insulation efficiency while preventing fire due to excellent fire resistance as a non-combustible material without causing sick house syndrome while emitting negative ions and far-infrared rays by adding a mixture.

In general, buildings are largely divided into frames and interior and exterior materials. Building materials used as frames may vary depending on the object of the building, but representatively reinforced concrete, steel frames, wood, bricks, etc. can be cited, and interior and exterior materials are plaster, It can be classified into wood, synthetic resin, and urethane foam.

Conventionally, organic chemical products such as gypsum board, styrofoam, glass wool, or ceramic fiber have been used as non-combustible and insulating materials used in Korea.

These organic chemical products are easily burned in the event of a fire, and toxic gases are generated, which has to endure suffocation and loss of life and property. It is approaching its limit due to a problem.

In addition, Styrofoam, fiberglass, urethane, and rock wool, which are insulation materials used in construction, have been widely used materials throughout the industry, but products made of these materials will face the face of consumers in the future as the main culprit of global warming and environmental destruction.

In particular, Styrofoam waste has a disadvantage that it takes 500 years to rot in the ground and generates a lot of toxic gases during combustion.

Urethane foam is mixed with isocyanate and polyol to fill the void by spraying and foaming in the field, or it is used by molding into a plate, but it contains freon, pentane, and carbon dioxide, so it has proven to be a very inappropriate material in terms of environmental pollution, and it breaks when it dries. It tends to be obsolete these days.

Glass fiber also has good thermal insulation and workability, but it causes industrial diseases due to fine dust when handling it, so there is a phenomenon that personnel handling this is avoided, and it causes enormous damage to the environment when treating waste.

As a conventional technology developed in order to solve the above problems, "non-combustible inorganic insulating material" of Patent Registration No. 0807245 is published in the registered patent publication.

The "non-combustible inorganic heat insulator" of the patent No. 0807245 uses glassy rock at 870 to 900°C and CO ₂ An inorganic foam obtained by rapidly heating with gas to vaporize crystal water; Water glass (Na ₂ 0 ·SiO ₂ ), a flame retardant and an auxiliary material stirred with antimony are mixed, molded into a mold, and thermally cured.

However, the "non-combustible inorganic insulating material" of Patent No. 0807245 satisfies the conditions such as strength to withstand impact, corrosion resistance, heat resistance, flame resistance, heat insulation, etc. There was a problem.

In addition, the "non-combustible inorganic insulating material" of the patent No. 0807245 is manufactured in the form of a pillar, frame, panel, etc., when the material is mixed and poured into a mold, transported to a curing room, loaded, and cured by natural drying. Not only does it take a lot of time because it has to go through several processes such as transporting and demoulding again, and all of these processes are designed to use labor, so not only a lot of manpower and labor costs are required, but productivity is low.

In order to solve the above problems, the "method of manufacturing a non-flammable insulating material using a foamed ceramic" of Patent No. 1328187 invented by the inventor of the present invention is disclosed in the Korean Patent Publication.

The “method for manufacturing a non-combustible insulation material using foamed ceramics” of the patent No. 1328187 is a process of dissolving a raw stone by pulverizing the raw quartz stone into 150-200 meshes and then dissolving it in hydrofluoric acid (step S1). and; An inorganic binder manufacturing process (S2 step) for obtaining an inorganic binder by adding and mixing sodium metasilicate, soda emulsion, fat sugar, kaolin, zirconium, calcium carbonate, and polyamide to the dissolved product; A first drying step (step S3) of drying basalt, volcanic stone, vermiculite, calcium carbonate, kaolin, and loess to obtain a ceramic raw material by drying to a moisture content of 2 to 3% apart from the steps S1 and S2; A ceramic foaming step (S4 step) of heating the ceramic raw material dried in the first drying step (S3 step) to a temperature of 1,000°C to 1,100°C and then temporarily exposing it to the atmosphere to obtain a foamed ceramic; A mixing process of forming a mixture by mixing the foamed ceramic and the inorganic binder in a weight ratio of 1:1 in a stirrer (step S5); A molding process (S6 step) of molding the mixture; It consists of a secondary drying step (S6) of drying the molded product at a temperature of 90°C to 100°C for 5 to 10 minutes.

However, the non-combustible insulator manufactured by the “method of manufacturing a non-combustible insulation material using foamed ceramics” of Patent No. 1328187 has a problem that economic efficiency is lowered because a variety of ceramic raw materials are used and the product is expensive due to a complex manufacturing process.

Patent Document 1: Patent No. 0807245 registered patent publication, Patent Document 2: Patent No. 1328187 Publication.

The present invention has been invented to solve various drawbacks and problems caused by the conventional method of manufacturing an insulating material in consideration of the above circumstances, and the object thereof is silicon carbide, silicon nitride, alumina, It is intended to provide a method of manufacturing a non-combustible insulation material using ceramic that can prevent fire by mixing a foamed ceramic obtained from zirconia and barium titanate and a liquid silicate to prepare an insulation material.

Another object of the present invention is to maintain the health of the body by releasing negative ions and far-infrared rays without causing atopic dermatitis and sick house syndrome causing allergic diseases, and to maintain the health of the body by discharging waste products accumulated in the body. It is to provide a method of manufacturing a non-combustible insulation material using ceramics in which the insulation material is an eco-friendly material, not a pollutant material.

Another object of the present invention is that foam ceramics and liquid silicate are mixed and molded, so that the weight is light and the strength is strong, and the workability is excellent due to the ductility, and the shape according to the purpose such as pillars, wall plates, frames, panels, etc. It is to provide a method of manufacturing a non-combustible insulating material using ceramics that are excellent in economical efficiency by improving productivity because molding manufacturing is easy and the requirements for materials, manpower, and labor costs are greatly reduced.

In order to achieve the above object, the method of manufacturing a non-flammable insulating material using a ceramic of the present invention comprises: a raw material dissolving process (step S1) for obtaining a dissolved product by dissolving silicon (Si) in hydrofluoric acid; A ceramic raw material preparation step (S2 step) of adding aluminum (Al), titanium (Ti), and zirconium (Zr) to the melt to obtain a ceramic raw material; A ceramic foaming step (S3 step) of heating the ceramic raw material obtained in the ceramic raw material preparation step (S2 step) to a temperature of 1,100°C to 1,200°C and then temporarily exposing it to the atmosphere to obtain a foamed ceramic; A mixing process of forming a mixture by mixing the foamed ceramic with a liquid silicate in a weight ratio of 1: 1 (step S4); A molding process (S5 step) of molding the mixture; It characterized in that it consists of a drying process (S6 step) of drying the molded article.

The present invention fights fire by mixing foam ceramic obtained from silicon carbide, silicon nitride, alumina, zirconia, barium titanate and liquid silicate to prepare an insulating material. It can be prevented and keeps the body healthy by releasing negative ions and far-infrared rays without causing atopic dermatitis and sick house syndrome that causes allergic diseases. It is made of an eco-friendly material, not a pollutant, light weight, strong strength, and excellent workability with ductility, and it is easy to mold and manufacture into a shape according to the purpose such as pillars, wall plates, frames, panels, etc. As the demand for labor and labor costs is drastically reduced, there is a special advantage that is excellent in economic efficiency by improving productivity.

1 is a flow chart of execution of a method for manufacturing a non-combustible insulation material using a conventional foamed ceramic,
Figure 2 is a schematic diagram of a method of manufacturing a non-combustible heat insulating material using the ceramic of the present invention,
Figure 3 is a flow chart of the execution of the method of manufacturing a non-combustible heat insulating material using the ceramic of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the method of manufacturing a non-combustible heat insulating material using the present invention ceramic.

Figure 2 is a schematic diagram of a method of manufacturing a non-combustible insulating material using the ceramic of the present invention, Figure 3 is a flow chart of the execution of the method of manufacturing a non-combustible insulating material using the ceramic of the present invention, the method of manufacturing a non-combustible insulating material using the ceramic of the present invention is silicon (Si) A raw material dissolving step (S1 step) of dissolving in hydrofluoric acid to obtain a dissolved product; A ceramic raw material preparation step (S2 step) of adding aluminum (Al), titanium (Ti), and zirconium (Zr) to the melt to obtain a ceramic raw material; A ceramic foaming step (S3 step) of heating the ceramic raw material obtained in the ceramic raw material preparation step (S2 step) to a temperature of 1,100°C to 1,200°C and then temporarily exposing it to the atmosphere to obtain a foamed ceramic; A mixing process of forming a mixture by mixing the foamed ceramic with a liquid silicate in a weight ratio of 1: 1 (step S4); A molding process (S5 step) of molding the mixture; It consists of a drying process (S6 step) of drying the molded product.

In the ceramic raw material preparation process (S2 step), the composition of the ceramic raw material is 80 to 85% by weight of a silicon (Si) melt, 6 to 7% by weight of aluminum (Al), 5 to 6% by weight of titanium (Ti), and zirconium ( Zr) is composed of 3 to 5% by weight.

Here, if the silicon (Si) melt is more than 85% by weight, the amount of aluminum (Al), titanium (Ti), and zirconium (Zr) is relatively reduced, which is not preferable due to the lack of ductility and strength of the insulation product. If the (Si) dissolved matter is less than 80% by weight, the ductility and strength of the product are too severe, which is not preferable as a heat insulating material product.

In addition, when the content of aluminum (Al) is less than 6% by weight, the ductility of the insulation product is insufficient, which is not preferable, and when it is more than 7% by weight, the ductility of the insulation product is strong, making it unsuitable for use as a building material. .

And, when titanium (Ti) is more than 6% by weight or zirconium (Zr) is more than 5% by weight, the amount of aluminum (Al) is relatively reduced, the ductility is too insufficient, and the strength is strong, which is not preferable. ) Is less than 5% by weight or zirconium (Zr) is less than 3% by weight, the amount of aluminum (Al) is relatively large, so that the ductility is too strong, and the strength is weak, which is not preferable.

In addition, if the silicon (Si) melt contains more than 4% by weight of water, it is not preferable because it takes a long time to heat the raw material in the later ceramic foaming process. If the amount of water is less than 3% by weight, the silicon (Si) is It does not dissolve well and is not preferable.

Separately, in the ceramic raw material preparation process (S2 step), the liquid silicate is composed of 70 to 75% by weight of silicone resin, 10 to 20% by weight of silica powder, 3 to 5% by weight of silanediol, and 3 to 5% by weight of diphenylsilanediol. Is formed.

Here, if the silicone resin is more than 75% by weight, the amount of silica powder, silanediol, and diphenylsilanediol is relatively small and the strength of the product decreases. If the silicone resin is less than 70% by weight, the silica powder, silanediol, and The amount of diphenylsilanediol increases and the strength of the product becomes too strong, which is not preferable.

Here, hexamethyldisilazane may be used in place of the silanediol or diphenylsilanediol, and ocher foam may be used in place of diphenylsilanediol, and the raw material obtained in the ceramic raw material preparation step (S2 step) is used at a temperature of 1,100°C to 1,200°C. After heating the furnace, the treatment of temporarily exposing it to the atmosphere is preferably foamed using a rotary kiln method.

As a molding method in the molding process (S5 step), a method of extrusion molding with an extruder or a method of spraying and injecting a mixture into a molding mold with air may be preferably used.

In addition, the drying in the drying process (S6 step) is preferably dried for 3 to 5 minutes at a temperature of 100°C to 110°C.

Example

By the method of the present invention, a non-combustible insulation material to be used for the wall of a building was prepared as follows, and the quality of the produced non-combustible insulation material was evaluated.

In this case, silicon (Si) was first dissolved in hydrofluoric acid to obtain a dissolved product (step S1), and aluminum (Al), titanium (Ti), and zirconium (Zr) were added to the dissolved product and mixed to obtain a ceramic raw material (S2). step).

The composition of the ceramic raw material in step S2 is composed of 81% by weight of a silicon (Si) melt, 6.5% by weight of aluminum (Al), 5.5% by weight of titanium (Ti), 4% by weight of zirconium (Zr), and 3% by weight of water. I did.

Subsequently, the ceramic raw material obtained in the ceramic raw material preparation step (S2 step) in the ceramic foaming step (S3 step) was heated to a temperature of 1,150°C and then temporarily exposed to the air to obtain a foamed ceramic.

Separately, a liquid silicate was prepared from 70% by weight of a silicone resin, 20% by weight of silica powder, 5% by weight of silanediol, and 5% by weight of diphenylsilanediol.

Subsequently, in the mixing process (step S4), the foamed ceramic is mixed with the liquid silicate at a weight ratio of 1: 1 to form a mixture, and the mixture is extruded with an extruder in the molding process (step S5) (step S6), and then formed. The molded product was dried at a temperature of 110° C. for 3 minutes in a drying process (step S6) to prepare a non-combustible insulation panel for building walls.

The following tests were conducted by requesting 10 samples (width × length × thickness = 100cm × 100cm × 100cm) of the thus prepared non-combustible insulation material to the Korea Institute of Construction Materials.

As a result of measuring the density (specific gravity) according to KSF2202 (Density Measurement Moisture Measurement Regulation), the average value of the specific gravity was 0.62. N/mm, and when the compressive strength was measured according to the regulations of KSF2202 (compressive strength test regulations), the average value of the compressive strength was 340kg/cm, and according to the regulations of KSM ISO 2813-02 (surface gloss test regulations). As a result of the gloss test, the surface gloss was 71, and the sample was commissioned to the Korea Fire Agency to measure the flame retardancy according to the regulations of KSF2271 (flame retardant test). When observed with the naked eye, it was kept in a flat state without any torsion.

From the above test results, it was confirmed that the non-combustible insulating material manufactured by the manufacturing method according to the embodiment of the present invention is suitable as a non-combustible building material.

Although the present invention has been described as a preferred embodiment so far, the present invention is not limited thereto and can be implemented with various modifications without departing from the gist of the invention.

Claims (8)

A raw material dissolving step (S1 step) of dissolving silicon (Si) in hydrofluoric acid to obtain a dissolved product; A ceramic raw material preparation step (S2 step) of adding aluminum (Al), titanium (Ti), and zirconium (Zr) to the melt to obtain a ceramic raw material; A ceramic foaming step (S3 step) of heating the ceramic raw material obtained in the ceramic raw material preparation step (S2 step) to a temperature of 1,100°C to 1,200°C and then temporarily exposing it to the atmosphere to obtain a foamed ceramic; A mixing process of forming a mixture by mixing the foamed ceramic with a liquid silicate in a weight ratio of 1: 1 (step S4); A molding process (S5 step) of molding the mixture; A method of manufacturing a non-combustible heat insulating material using ceramic consisting of a drying process (step S6) of drying the molded product. The method of claim 1, wherein in the ceramic raw material preparation step (S2 step), the composition of the ceramic raw material is 80 to 85% by weight of a silicon (Si) melt, 6 to 7% by weight of aluminum (Al), and 5 to titanium (Ti). 6% by weight, zirconium (Zr) 3 to 5% by weight, characterized in that the method for producing a non-combustible heat insulating material using ceramic. The method of claim 2, wherein the silicon (Si) melt in the ceramic raw material preparation step (S2 step) has a moisture content of 3 to 4%. The method of claim 1, wherein the liquid silicate is composed of 70 to 75% by weight of a silicone resin, 10 to 20% by weight of silica powder, 3 to 5% by weight of silanediol, and 3 to 5% by weight of diphenylsilanediol. Method for producing a non-combustible heat insulating material using a ceramic. The method of claim 4, wherein hexamethyldisilazane is used in place of the silanediol, and foamed loess is used in place of diphenylsilanediol. The non-combustible using ceramic according to claim 1, wherein the raw material obtained in the ceramic raw material preparation step (S2 step) is heated to a temperature of 1,100°C to 1,200°C and then temporarily exposed to the atmosphere using a rotary kiln method. Method of manufacturing insulation. The method of claim 1, wherein the molding method in the molding process (S5 step) is a method of extrusion molding with an extruder or a method of spraying and injecting a mixture into a molding mold with air. Manufacturing method. The method of claim 1, wherein drying in the drying step (S6 step) is performed at a temperature of 100°C to 110°C for 3 to 5 minutes.

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