KR101200161B1 - Porous Composition For Internal Wall And Method For Producing Internal Wall Materials Using The Composition - Google Patents

Abstract

PURPOSE: A porous composition for interior wall and a manufacturing method of the interior wall by using the same are provided to enhance durability and deodorization by including specific additives. CONSTITUTION: A porous composition for interior wall comprises 30-40 parts by weight of clay, 20-40 parts by weight of kaolin, 10-15 parts by weight of sandy white clay, 5-15 parts by weight of diatomaceous earth, 5-10 parts by weight of zeolite, 0.5-1.0 part by weight of nano-carbon black 0.1-2 parts by weight of Na2B4O7, 0.1-3 parts by weight of 10H2O, 0.2-2.5 parts by weight of water glass, and 0.1-3.0 parts by weight of frit based on 100 parts by weight of the composition. A manufacturing method of the interior wall comprises the following steps: mixing the porous composition for interior walls; spray drying the crushed material and pressure molding thereof by pulverizing the mixture for 15-60 minutes by using ball mill when the percentage of water content is 40-50 parts by weight; drying the molded product at 80-110 deg. Celsius for 12 hours; and sintering the dried material at 750-1,000 deg. Celsius for 20-60 minutes and cooling at room temperature.

Description

Porous composition for internal wall and method for producing internal wall materials using the composition

The present invention relates to a composition for a porous interior wall with improved humidity, durability and deodorizing function and a method for producing the interior wall using the composition.

Conventionally, cement was mainly used as interior materials of an interior. Cement has been an important part of modern building materials for the last 40 years due to rapid industrial development. However, it is well known that cement contains a lot of alkalis harmful to the human body, causing various skin diseases and causing various health damages.

In order to solve these side effects, instead of cement, a boom using natural minerals such as clay, kaolin and clay is being generated.

Natural minerals such as loess, kaolin and clay not only have their own humidity control functions, but also have the effect of adsorbing harmful volatile compounds such as total volatile organic compounds (TVOC) and formaldehyde (HCHO). It has been widely used.

In particular, ocher is used as a building interior material to neutralize the alkali component of cement, which is an important part of building materials, to have a good heat storage effect, and to provide a comfortable living environment or living space with excellent adsorption power.

Korean Patent No. 10-0223683 discloses an interior tile having an antibacterial effect by adding a nitrate compound and titanium oxide to the base material for firing.

Korean Patent No. 10-0563558 discloses a method for producing a tile that emits anions and far infrared rays by applying an glaze with jade powder added to a surface of a magnetic tile.

In addition, as a known technique, there is a technique for decomposing indoor contaminants by applying glaze to which titanium dioxide hydroxyapatite is added to cause a photocatalytic reaction.

However, the above techniques have problems of secondary pollution and durability falling due to excessive additives, and in the case of photocatalyst, there is a problem that the effect is severe in the room due to the deviation depending on the condition of light emission (sunlight).

Conventionally, in order to remove moisture in a room, a deliquescent compound is used as a dehumidifying agent, and unfired ocher bricks may be used as interior materials. However, these technologies are expensive because of the short life of the dehumidifying agent, many cracks due to dry shrinkage, and many additives are used to maintain fluidity and strength for ease of construction. This is happening.

Accordingly, an object of the present invention is to provide a composition for interior walls using natural minerals that improve humidity, deodorization and durability, and a method of manufacturing interior walls using the same.

In accordance with this purpose, the present inventors have studied to solve the problems of the prior art, and found that the humidity control, deodorization, and durability can be improved by providing a composition in which a natural mineral of a specific component and a specific additive are mixed in a specific ratio. It came to complete this invention.

The object of the invention is achieved by providing a composition comprising the following components, based on a total of 100 parts by weight of the composition:

-30 to 40 parts by weight of clay,

-20-40 parts by weight of kaolin,

-10-15 parts by weight of sandy loam,

-5-15 parts by weight of diatomaceous earth,

5-10 parts by weight of zeolite,

-0.5 to 1.0 parts by weight of nanocarbon black.

-0.1 to 2 parts by weight of boron oxide (B ₂ O ₃ ),

-Na ₂ B ₄ O ₇ ㆍ 10H ₂ O 0.1∼3.0 parts by weight,

-0.2 to 2.5 parts by weight of water glass, and

-0.1 to 3.0 parts by weight of frit.

Another object of the invention is achieved by a method of making a vitreous wall comprising the following steps (based on a total of 100 parts by weight of the composition):

-30 to 40 parts by weight of clay, 20 to 40 parts by weight of kaolin, 10 to 15 parts by weight of sandy clay, 5 to 15 parts by weight of diatomaceous earth, 5 to 10 parts by weight of zeolite, and 0.5 to 1.0 parts by weight of nanocarbon black. Generating step,

0.1-2 parts by weight of boron oxide (B ₂ O ₃ ), Na ₂ B ₄ O ₇ 0.1-3.0 parts by weight of 10H ₂ O, 0.2-2.5 parts by weight of water glass, and frit Adding 0.1 to 3.0 parts by weight to obtain a mixture,

Pulverizing the mixture by spray drying for 15 to 60 minutes in a water content of 40 to 50 parts by weight with respect to 100 parts by weight of the mixture using a ball mill;

Drying the molded product at 80 to 110 ° C. for 12 hours, calcining at 750 ° C. to 1,000 ° C. for 20 to 60 minutes, and then cooling at room temperature.

The interior wall made according to the present invention is made of porous material using natural minerals, so it is excellent in humidity control, durability and deodorization.

The clay used in the present invention is one of clays that are mined in the Obu region of Gyeongnam Sancheong, which has a high iron content, and the soil particles are a little coarse than white or blue clay. Some pink spots (momiji) may appear in some areas. When mixed with other materials, it is often used for making bowls or pots, and it is also used for making pots or vases using the clay texture. The firing temperature of this clay is 1200-1250 ° C.

The components and composition ratios of the obu clay used in the present invention are as follows: SiO ₂ : 45-55%, Fe ₂ O ₃ : 5-6%, Al ₂ O ₃ : 25-35%, MgONa ₂ O: 8% , CaCO ₃ : 6%.

Obu clay used in the present invention is a type of hydrated aluminum silicate mineral group having a clay mineral layer structure and a very small particle size (0.002 mm). Or an alkali metal and an alkaline earth metal. Clay minerals are very similar to each other and many are distinguished only by X-ray diffraction, electron microscopy or differential thermal analysis.

The clay used in the present invention is used in an amount of 30 to 40 parts by weight based on 100 parts by weight of the total composition. If the amount of clay is less than 30 parts by weight, the plasticity is lowered, the workability worsens, and if it exceeds 40 parts by weight, the shrinkage rate is increased to cause deformation of the product.

Kaolin used in the present invention is also called kaolin, kaolin or white clay (白 陶土, china clay). Its main components are kaolinite (Al ₂ O ₃ .2SiO ₂ .2H ₂ O) and halosite Al ₂ O ₃ .SiO ₂ .4H ₂ O. These kaolins are produced by weathering, where feldspars, such as feldspar, feldspar, soda, feldspar, and feldspar in rocks are chemically decomposed by carbonic acid or water. Usually, several meters thick layer is formed on the rocks of Wonseong soil. It is used as a raw material for porcelain, and it is called kaolin because it was produced a lot in China's Gao Ling. High-quality kaolin is light and bright because it does not contain iron, making it suitable for making thin bowls. It is commonly called white clay in Korea, and many good white clay is produced in Hadong and Sancheong provinces in Gyeongnam.

The composition and composition ratio of kaolin used in the present invention are SiO ₂ : 45-55%, Fe ₂ O ₃ : 1-5%, Al ₂ O ₃ : 25-35%, MgONa ₂ O: 2%, CaCO ₃ : About 1%, and mineral components include 60-70% quartz, feldspar and mica 10-20%, carbonate minerals 5-35%, and 2-5% silt for hornblende, apatite, biotite, garnet, fluorite, silicate, tourmaline , Heavy minerals such as zircon and the like.

Kaolin is diverse in ceramics, paper, paint, plastics, rubber industry, fillers, civil engineering, building materials, chemicals, catalysts in agriculture, fertilizer additives, soil fillers, etc. The importance as a highly functional material is emphasized, such as widespread use.

Kaolin used in the present invention is used in an amount of 20 to 40 parts by weight based on 100 parts by weight of the total composition. If the amount of kaolin is less than 20 parts by weight, there is a problem that the shrinkage rate is increased and similarly the product is deformed, and if the amount of kaolin exceeds 40 parts by weight, plasticity is lowered and workability deteriorates.

According to the invention, sandy loam is used in an amount of 10 to 15 parts by weight, based on a total of 100 parts by weight of the composition. If the amount of sandy loam is less than 10 parts by weight, a problem that the shrinkage is increased, and if more than 15 parts by weight, the problem of sintering power is broken and broken.

Diatomaceous earth used in the present invention is used in an amount of 5 to 15 parts by weight based on 100 parts by weight of the total composition.

Zeolite is also called zeolite. It is a kind of hydrous aluminum silicate mineral mainly containing alkali metal or alkaline earth metal, and the tetrahedron of (Si, Al) O ₄ is bonded in a three dimensional network. Some gaps exceed 0.6 mm in diameter. Feldspar is a part of Si in the three-dimensional network structure in which quartz SiO ₂ and diamond tetrahedral structures are connected indefinitely, and Al is replaced by zeolite. This gap allows the zeolite to adsorb a large amount of water while having a molecular sieve function.

According to the invention, zeolites are used in amounts of from 5 to 10 parts by weight, based on a total of 100 parts by weight of the composition. If the amount of the zeolite is less than 5 parts by weight, there is a problem that the adsorption rate is lowered, and if the amount of zeolite exceeds 10 parts by weight, the sintering power is lowered and the product price is raised.

According to the invention, nanocarbon black is used in an amount of 0.5 to 1.0 parts by weight, based on a total of 100 parts by weight of the composition. If the amount of the nanocarbon black is less than 0.5 parts by weight, the porosity is reduced, and if the amount exceeds 1.0 parts by weight, the bonding strength is weak and breakage occurs.

When the nano carbon black used in the present invention is molded and calcined together with the raw material, the carbon component is carbonized at high temperature and disappears to form an empty space, and also has a high specific surface area of about 1,000 to 1500 m ² / g. In addition to improving heat insulation and water resistance, it is possible to reduce the weight of the product made from this composition.

According to the invention, boron oxide (B ₂ O ₃ ) is used in an amount of 0.1 to 2 parts by weight, based on a total of 100 parts by weight of the composition. If the amount of boron oxide is less than 0.1 parts by weight, the problem of not fusion occurs, and if it exceeds 2 parts by weight, the problem of hardening by excessive sintering occurs.

According to the invention, Na ₂ B ₄ O ₇ .10H ₂ O is used in an amount of 0.1 to 3.0 parts by weight, based on a total of 100 parts by weight of the composition. If the amount of Na ₂ B ₄ O ₇ 10H ₂ O is less than 0.1 parts by weight, the problem of not fusion occurs, and if it exceeds 3.0 parts by weight, the problem of hardening by excessive sintering occurs.

According to the present invention, water glass (sodium silicate) is used in an amount of 0.2 to 2.5 parts by weight based on 100 parts by weight of the total of the composition. If the amount of water glass is less than 0.2 part by weight, a problem of increasing the viscosity occurs, and if it exceeds 2.5 parts by weight, a problem of low viscosity occurs.

According to the invention, the frit is used in an amount of 0.1 to 3.0 parts by weight, based on a total of 100 parts by weight of the composition. If the amount of the frit is less than 0.1 parts by weight, there is a problem that the sintering does not occur, and if the amount of the frit exceeds 3.0 parts by weight, the problem is that the adsorption rate is lost by fusion with the glaze.

Chemical components and compositions of natural minerals for use in the present invention are shown in Table 1 below.

chemistry
ingredient
(wt%) division SiO ₂ Al ₂ O ₃ Na ₂ O K ₂ O CaO MgO Fe ₂ O ₃ TiO ₂ Ig.
loss Obu clay 49.9 30.5 1.72 0.73 5.07 0.66 2.08 0.22 9.09 Sandy soil 51.6 30.0 3.72 0.42 11.1 0.30 0.91 0.13 1.74 china clay 45.0 32.5 0.08 0.66 0.89 1.43 4.75 0.50 14.20 Diatomaceous earth 78.16 12.75 0.34 1.96 0.17 0.72 4.73 0.51 - Zeolite 34.50 28.72 17.50 0.10 0.22 0.1 0.1 - 18.76 Nano black carbon C
99.95 - - - - - - - 0.05

In Table 1, “Ig. loss ”refers to the amount of flying or extinguishing by carbonization and evaporation during heating.

Natural minerals for use in the present invention, as a result of the analysis by X-ray diffraction analysis, those in which the main mineral and minor minerals have the structural phase shown in Table 2 below.

Ore
XRD division The main mineral Minor minerals Obu clay Halloysite Anorthite, a-Quartz Sandy soil Anorthite Albite china clay Halloysite a-Quartz Talc Chlororite silica, a-Quartz Anorthite

Example  (Preparation of interior wall according to the present invention)

Obu clay 350g, kaolin clay 300g, sandy clay 100g, diatomaceous earth 100g, zeolite 90g and nanocarbon black 10g are uniformly mixed in a mixer to obtain the mixture 950g after satisfying the conditions of Tables 1 and 2, 10 g of B ₂ O _3, 10 g of Na ₂ B ₄ O ₇ 10H ₂ O, 20 g of waterglass, and 10 g of frit were added to obtain a mixture. Using a ball mill, the mixture was pulverized for 15 to 60 minutes in a water content of 40 to 50 parts by weight with respect to 100 parts by weight of the mixture, and then spray dried and molded into a press. The molded product was dried at 80 to 110 ° C. for 12 hours, and then calcined at 750 ° C. to 1,000 ° C. for 20 to 60 minutes, and then cooled at room temperature to prepare a built-in wall having a width of 300 mm, a length of 200 mm, and a thickness of 8 mm.

Experimental Example

1. Deodorization rate

The deodorization rate test was performed on the interior wall prepared in the above example. In the method of measuring the deodorization rate, the odor and odor removal ability of the test body was measured using a deodorization rate meter (Gas sensor for the FT-IR measuring instrument of the US MIDAC). At this time, the initial concentration of ammonia gas was 500 ppm and the measurement interval was 30 minutes. The deodorization rate was 320 g / m ² and the 120 minute deodorization rate of TVOC and HCHO was 98%.

As can be seen from this result, the interior wall exhibits excellent deodorization performance of more than 95% based on 120 minutes of measurement time. This result is due to the fact that the product uses natural minerals and has a porous microstructure.

2. Moisture absorption rate

The moisture absorptivity test was carried out for the interior wall prepared in the above example. This experiment was carried out using a performance evaluation method (ISO 24353, etc.) to measure moisture absorption and moisture absorption. As a result, forced humidification (humidifier, water tank) and moisture absorption performance in the natural state were about 2% by weight. It was.

Claims (2)

Based on a total of 100 parts by weight of the composition, a composition for an intestinal wall comprising the following components:
-30 to 40 parts by weight of clay,
-20-40 parts by weight of kaolin,
-10-15 parts by weight of sandy loam,
-5-15 parts by weight of diatomaceous earth,
5-10 parts by weight of zeolite,
-0.5 to 1.0 parts by weight of nanocarbon black.
-0.1 to 2 parts by weight of boron oxide (B ₂ O ₃ ),
-Na ₂ B ₄ O ₇ ㆍ 10H ₂ O 0.1∼3.0 parts by weight,
-0.2 to 2.5 parts by weight of water glass, and
-0.1 to 3.0 parts by weight of frit.
Method of making an embedded wall comprising the following steps:
-30 to 40 parts by weight of clay, 20 to 40 parts by weight of kaolin, 10 to 15 parts by weight of sandy clay, 5 to 15 parts by weight of diatomaceous earth, 5 to 10 parts by weight of zeolite, and 0.5 to 1.0 parts by weight of nanocarbon black. Generating step,
0.1-2 parts by weight of boron oxide (B ₂ O ₃ ), Na ₂ B ₄ O ₇ 0.1-3.0 parts by weight of 10H ₂ O, 0.2-2.5 parts by weight of water glass, and frit Adding 0.1 to 3.0 parts by weight to obtain a mixture,
Pulverizing the mixture by spray drying for 15 to 60 minutes in a water content of 40 to 50 parts by weight with respect to 100 parts by weight of the mixture using a ball mill;
Drying the molded product at 80 to 110 ° C. for 12 hours, calcining at 750 ° C. to 1,000 ° C. for 20 to 60 minutes, and then cooling at room temperature.