KR20220039096A - Brick with excellent mechanical properties and antibacterial properties and manufacturing method thereof - Google Patents

Abstract

The present invention relates to bricks with excellent mechanical properties and antibacterial properties and a method for producing the same. More specifically, the present invention comprises: a pottery stone grinding step of grinding a pottery stone having a silicon content of 75-80 wt%; an inorganic binder mixing step of mixing an inorganic binder and water with the pottery stone ground through the pottery stone grinding step; a molding step of molding a mixture produced through the inorganic binder mixing step; a drying step of drying the molded article formed through the molding step; and a sintering step of sintering the molded article dried through the drying step. Bricks produced through the above process have excellent mechanical properties, thereby being used for floor, have excellent antibacterial and deodorizing properties, and have improved appearance quality, thereby exhibiting excellent marketability.

Description

Bricks with excellent mechanical properties and antibacterial properties and their manufacturing method {BRICK WITH EXCELLENT MECHANICAL PROPERTIES AND ANTIBACTERIAL PROPERTIES AND MANUFACTURING METHOD THEREOF}

The present invention relates to a brick having excellent mechanical properties and antibacterial properties, and a method for manufacturing the same, and more particularly, to a brick having excellent mechanical properties and can be applied for flooring. It relates to a brick and a method for manufacturing the same.

Bricks are broadly classified into clay bricks, cement bricks, and cement blocks that are larger in size than cement bricks. , refractory bricks, and refractory insulation bricks. Clay brick is mainly used as a finishing material for exterior and interior walls of houses because it has functions such as insulation, moisture control, and far-infrared emission because soil is the main raw material.

Clay bricks are not made by mixing and pulverizing the raw materials used in the manufacture of clay bricks, but by mixing with the main raw material, clay, and wet molding, except for some bulk raw materials. In contrast, the surface of the substrate is rough and porous. Therefore, the durability, strength, and robustness required as exterior and finishing materials for construction were somewhat lacking.

In addition, by using red clay or black clay containing iron as a clay raw material used as a raw material, the product color as a finished brick has a uniform color of red or reddish brown, and the appearance is uniformly flat when constructed with the finished clay brick. Subsequently, there was a problem in that it did not give any decorative beauty to the entire building.

Therefore, the owner of clay bricks, which have similar durability, strength, and robustness to other exterior materials such as tiles, stone, and metal, have various colors, and can give decorative beauty as a whole when a building is constructed with clay bricks, which are finished products. There was a demand, and this is also required in the building construction market. In order to meet such market demands, bricks with reinforced strength, etc. are being manufactured, but there is a problem in that the problem of appearance quality is still not solved.

Korean Patent Registration No. 10-0500146 (June 29, 2005) Korean Patent Registration No. 10-1149576 (May 17, 2012)

It is an object of the present invention to provide a brick with excellent mechanical properties and antibacterial properties that can be applied for flooring, and has excellent antibacterial and deodorizing properties, as well as improved appearance quality and thus exhibiting excellent marketability, and a method for manufacturing the same is to provide

An object of the present invention is to provide a stone grinding step of pulverizing a stone stone having a silicon content of 75 to 80 wt%, an inorganic binder mixing step of mixing an inorganic binder and water with the stone stone crushed through the stone stone crushing step, and the inorganic binder mixing step Excellent mechanical properties and antibacterial properties, characterized in that it comprises a molding step of molding the mixture prepared through It is achieved by providing a method for manufacturing a brick.

According to a preferred feature of the present invention, the porcelain has a silicon content of 78.1% by weight.

According to a more preferred feature of the present invention, the stone grinding step is performed by crushing the stone stone to a particle size of 0.1 to 1 millimeter.

According to a more preferred feature of the present invention, in the mixing step of the inorganic binder, 10 to 60 parts by weight of the inorganic binder and 5 to 10 parts by weight of water are mixed with 100 parts by weight of the stone crushed through the stone grinding step.

According to an even more preferred feature of the present invention, the inorganic binder is made of at least one selected from the group consisting of cruciferous clay, diatomaceous earth, stoneware clay, kaolin, crematory earth, and bentonite.

According to an even more preferred feature of the present invention, the drying step is performed at a temperature of 40 to 100° C. for 60 to 80 hours.

According to an even more preferred feature of the present invention, the sintering step is performed at a temperature of 1000 to 1400° C. for 10 to 20 hours.

According to an even more preferred feature of the present invention, in the inorganic binder mixing step, 10 to 20 parts by weight of Masato is further contained relative to 100 parts by weight of the ceramic stone.

According to an even more preferred feature of the present invention, between the drying step and the firing step, a gloss coating step of coating the surface of the molded article dried through the drying step with a gloss agent is further performed, and the gloss agent is added to 100 parts by weight of seawater. It shall be made by mixing 5 to 50 parts by weight of sodium carbonate.

In addition, the object of the present invention can be achieved by providing a brick, characterized in that produced by the method for producing a brick excellent in mechanical properties and antibacterial properties as described above.

A brick having excellent mechanical properties and antibacterial properties according to the present invention and a method for manufacturing the same are excellent in mechanical properties and can be applied to floors, and provide a brick with excellent antibacterial and deodorizing properties as well as improved appearance quality and excellent commercial properties. shows excellent effect.

1 is a flowchart showing a method of manufacturing a brick excellent in mechanical properties and antibacterial properties according to an embodiment of the present invention.
2 is a flowchart showing a method of manufacturing a brick excellent in mechanical properties and antibacterial properties according to another embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention and the physical properties of each component will be described in detail, which is intended to describe in detail enough that a person of ordinary skill in the art to which the present invention pertains can easily carry out the invention, This does not mean that the technical spirit and scope of the present invention is limited.

The method for manufacturing bricks having excellent mechanical properties and antibacterial properties according to the present invention includes the stone grinding step (S101) of crushing the stone stone having a silicon content of 75 to 80 wt%, and the stone stone crushing step (S101). Inorganic binder mixing step (S103) of mixing the binder and water, molding step (S105) of molding the mixture prepared through the inorganic binder mixing step (S103), drying the molded product through the molding step (S105) It consists of a drying step (S107) and a firing step (S109) of firing the molded product dried through the drying step (S107).

The porcelain grinding step (S101) is a step of grinding porcelain having a silicon content of 75 to 80% by weight, and is made by grinding porcelain to a particle size of 0.1 to 1 millimeter, 0.1 to 0.25 millimeters, 0.26 to 0.6 Millimeter, 0.7 to 1 millimeter, and 1.1 to 4 millimeters, respectively, the pulverization step is not particularly limited as long as it is a device capable of pulverizing stonework to a particle size within the above range, and any device can be used. It is preferable to use

The porcelain pulverized as described above is mixed with 100 parts by weight of 0.1 to 0.25 millimeter powder, 100 to 150 parts by weight of 0.26 to 0.6 millimeter powder, 80 to 120 parts by weight of 0.7 to 1 millimeter powder, and 80 to 120 parts by weight of 1.1 to 4 millimeter powder It is desirable to be

When the stone powder pulverized into various sizes as described above is mixed and used, the density of bricks is improved and excellent impact resistance can be exhibited. The porcelain powder facilitates mixing with the inorganic binder mixed in the inorganic binder mixing step (S103) and allows the brick to have appropriate strength and viscosity, but the maximum value described above for the content of porcelain powder having the above particle size In the case of exceeding the sum of

The ceramics used in the present invention have a silicon dioxide content of 75 to 80% by weight, and it is preferable to use a ceramics from the Yeongdeok region having a silicon content of 78.1% by weight. A pottery stone is a rock that is a raw material for ceramics whose main constituent minerals are quartz, celisite (mica clay mineral) and kaolinite. The more sericite there is, the greater the plasticity and the greater the dry strength. In addition, it is known that the degree of refinement of silica sand has a great effect on the properties of the product. As in the present invention, when a ceramic stone containing 75 to 80 wt% of silicon dioxide is used, a brick with a smoother surface can be provided compared to clay bricks. there is.

When the content of silicon dioxide contained in the porcelain exceeds 75% by weight, the absorption rate of the brick in which the porcelain is used is lowered, the compressive strength is improved, the antifungal or antibacterial performance is improved, and the odor such as ammonia is eliminated. The deodorizing function is given and the occurrence of microcracks during the manufacturing process is suppressed.

After requesting the ceramics from the Yeongdeok region to be analyzed for components, the results are shown in Figure 3 below. Able to know.

The inorganic binder mixing step (S103) is a step of mixing an inorganic binder and water with the stonework pulverized through the stonework crushing step (S101). 10 to 60 parts by weight and 5 to 10 parts by weight of water are put into a mixing device equipped with a stirrer, and stirred at a speed of 100 to 200 rpm for 10 to 20 minutes.

The inorganic binder can be used as long as it is an inorganic material having viscosity and plasticity, but is preferably made of at least one selected from the group consisting of crock clay, diatomaceous earth, stoneware clay, kaolin, crematory earth and bentonite.

If the content of the inorganic binder is less than 10 parts by weight, the binding force of the ceramic powder may be lowered, and the mechanical strength of the brick may be reduced. This may increase and the compressive strength may decrease.

In addition, in the inorganic binder mixing step (S103), 10 to 20 parts by weight of Masato may be further contained compared to 100 parts by weight of the stone, Masato exhibits very good drainage and water holding capacity, SiO ₂ , Al ₂ O ₃ , Fe It has ₂ O ₃ as a main component, and when it is mixed with the porcelain stone and inorganic binder, it prevents shrinkage of the molded product for bricks during the firing process, thereby inhibiting the occurrence of cracks or distortion of the shape of the bricks.

When the content of Masato is less than 10 parts by weight, the above effect is insignificant, and when the content of Masato exceeds 20 parts by weight, the content of the inorganic binder is relatively reduced too much, and the bonding force between the stone and the Masato is reduced, so the mechanical strength of the bricks may rather be lowered.

The forming step (S105) is a step of molding the mixture prepared through the inorganic binder mixing step (S103), and the mixture prepared through the inorganic binder mixing step (S103) is put into a molding mold, and a non-porous brick according to the purpose This is the stage of molding into various shapes such as , perforated bricks, perforated bricks, etc.

At this time. In the forming step (S105), it is preferable to form the mixture in the shape of a brick using a vacuum pulverizer or a vacuum extrusion machine. When using a vacuum earth grinder or a vacuum extrusion molding machine, it is preferable to perform molding with an earth pressure of 21 to 24 MPa and a discharge amount of 54 m ³ /h.

The drying step (S107) is a step of drying the molding molded through the molding step (S105), and the molding formed through the molding step (S105) is heated at a temperature of 40 to 100° C. for 60 to 80 hours. It consists of a process of controlling the content of moisture contained in the molding.

At this time, in the drying step (S107), any dryer can be used as long as it can dry the molding, but a tunnel-type drying furnace is used. Drying is carried out for 65 to 75 hours, and when it flows out from the tunnel-type drying furnace after the drying time has elapsed, it is preferable that the outflow process proceeds at a temperature of 80° C. and a relative humidity of less than 2%.

The firing step (S109) is a step of firing the molded product dried through the drying step (S107), and the molding dried through the drying step (S107) is fired at a temperature of 1000 to 1400 ° C. for 10 to 20 hours. made by the process

If the temperature of the sintering step (S109) is less than 1000 ℃, the firing of the molding whose main component is porcelain does not proceed properly. Bricks manufactured through the firing process are over-sintered, resulting in reduced durability and undesirable in terms of energy efficiency.

In addition, if the temperature condition in the firing step (S109) is 1000 to 1300°C, it is preferable to proceed with the firing for 15 to 20 hours, and when the firing temperature is at 1100 to 1250°C, the firing process is performed for 16 to 18 hours. It is preferable to do

At this time, the firing step (S109) is preferably performed in an automatic firing furnace equipped with a program of preheating, firing and cooling, and the preheating is preferably performed at 600 to 800° C. for 12 to 14 hours.

In addition, between the drying step (S107) and the firing step (S109), a polishing agent coating step (S108) of coating a gloss agent on the surface of the molded product dried through the drying step (S107) may be further performed, the drying step It is made by spray-coating 3 to 5 parts by weight of a brightener relative to 100 parts by weight of the molded product dried through (S107).

At this time, the brightener is preferably made by mixing 5 to 50 parts by weight of sodium carbonate in 100 parts by weight of seawater.

The brightening agent prepared by mixing sodium carbonate with seawater as described above exhibits more improved gloss performance compared to the gloss component made of only salt water such as seawater. When the content of sodium carbonate is less than 5 parts by weight, the above effect is insignificant, and the When the content exceeds 50 parts by weight, the manufacturing cost increases, and the content of seawater is relatively reduced, so that the gloss improvement effect may be reduced.

Hereinafter, a method for manufacturing a brick excellent in mechanical properties and antibacterial properties according to the present invention and physical properties of a brick manufactured through the manufacturing method will be described with reference to examples.

<Example 1>

After grinding the pottery stone in Yeongdeok region with a mill grinder, 100 parts by weight of potting stone powder having a particle size of 0.1 to 0.25 millimeters, 125 parts by weight of potting stone powder having a particle size of 0.26 to 0.6 millimeters, and a particle size of 0.7 to 1 millimeter A mixture of 35 parts by weight of stone clay and 8 parts by weight of water was prepared by mixing 100 parts by weight of a ceramic stone powder having was put into a molding die (length 230mm × width 114mm × thickness 50mm) and molded, and the manufactured molding was put into a tunnel-type drying furnace and dried at a temperature of 60°C for 70 hours, and the dried molding was preheated to a temperature of 700°C. After being put into a kiln (tunnel kiln), it was fired at a temperature of 1250° C. for 16 hours to prepare bricks with excellent mechanical properties and antibacterial properties.

Five bricks prepared in Example 1 were sampled, and the mechanical properties of the samples were requested to the Korea Institute of Construction and Living Environment, and the results are shown in FIGS. 4 to 5 below.

(However, mechanical properties are expressed in terms of flexural strength, compressive strength and water absorption.)

As shown in FIGS. 4 to 5 below, it can be seen that the floor bricks prepared in Example 1 of the present invention have excellent mechanical properties.

In addition, the antibacterial and antifungal properties of the bricks prepared in Example 1 were requested to the Korea Construction Living Environment Testing Institute, and the results are shown in FIGS. 6 to 8 below.

6 to 8 below, it can be seen that the bricks prepared in Example 1 of the present invention have excellent antibacterial and antifungal properties.

In addition, the deodorizing performance of the bricks manufactured in Example 1 was requested to the Korea Construction Living Environment Testing Institute, and the results are shown in FIGS. 9 to 10 below.

As shown in FIGS. 9 to 10 below, it can be seen that the bricks prepared in Example 1 of the present invention exhibit excellent deodorizing performance.

Accordingly, the brick having excellent mechanical properties and antibacterial properties according to the present invention and a method for manufacturing the same provide a brick having excellent mechanical properties and thus can be applied for flooring, and having excellent antibacterial and deodorizing properties as well as improved appearance quality.

S101; stone crushing step
S103; Inorganic binder mixing step
S105 ; molding step
S107; drying stage
S108; varnish coating step
S109; firing stage

Claims (10)

a stone grinding step of crushing a stone stone having a silicon content of 75 to 80 wt%;
an inorganic binder mixing step of mixing an inorganic binder and water with the stone pulverized through the stone stone crushing step;
a molding step of molding the mixture prepared through the inorganic binder mixing step;
a drying step of drying the molded product molded through the molding step; and
A method of manufacturing a brick excellent in mechanical properties and antibacterial properties, characterized in that it comprises; a firing step of firing the molded product dried through the drying step.
The method according to claim 1,
The method of manufacturing a brick excellent in mechanical properties and antibacterial properties, characterized in that the porcelain has a silicon content of 78.1% by weight.
The method according to claim 1,
The method for producing bricks with excellent mechanical properties and antibacterial properties, wherein the stone grinding step is performed by crushing the stone stone to a particle size of 0.1 to 1 millimeter.
The method according to claim 1,
The inorganic binder mixing step comprises mixing 10 to 60 parts by weight of an inorganic binder and 5 to 10 parts by weight of water to 100 parts by weight of the stone pulverized through the stone crushing step. .
5. The method according to claim 4,
The inorganic binder is a method of manufacturing a brick with excellent mechanical properties and antibacterial properties, characterized in that it is made of at least one selected from the group consisting of stone clay, diatomaceous earth, stone clay, kaolin, crested earth, and bentonite.
The method according to claim 1,
The drying step is a method of manufacturing a brick excellent in mechanical properties and antibacterial properties, characterized in that it is made for 60 to 80 hours at a temperature of 40 to 100 ℃.
The method according to claim 1,
The firing step is a method of manufacturing a brick excellent in mechanical properties and antibacterial properties, characterized in that made at a temperature of 1000 to 1400 ℃ for 10 to 20 hours.
The method according to claim 1,
In the inorganic binder mixing step, 10 to 20 parts by weight of Masato is further contained compared to 100 parts by weight of the stone stone.
The method according to claim 1,
Between the drying step and the firing step, a gloss coating step of coating a gloss agent on the surface of the molded product dried through the drying step is further performed,
The brightener is a method of manufacturing a brick excellent in mechanical properties and antibacterial properties, characterized in that it is made by mixing 5 to 50 parts by weight of sodium carbonate in 100 parts by weight of seawater.
Bricks, characterized in that produced by the method for producing a brick excellent in mechanical properties and antibacterial properties according to any one of claims 1 to 9.

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