KR20170027969A

KR20170027969A - A method and electrical conducting heating loess board containing graphene

Info

Publication number: KR20170027969A
Application number: KR1020150124628A
Authority: KR
Inventors: 박봉식; 김동기
Original assignee: 김승묵; 김동기; 안동현; 박봉식
Priority date: 2015-09-03
Filing date: 2015-09-03
Publication date: 2017-03-13
Also published as: KR101760570B1

Abstract

The present invention relates to a loess board used as an interior material of a building and a manufacturing method thereof and, more specifically, relates to a conductive exothermic loess board containing graphene and a method of manufacturing an exothermic loess board which improves long-term stability and durability at high temperatures and brings about improvements in thermal storage effect by improving electric conductivity and thermal conductivity. In addition, the present invention enables to manufacture a loess board with minimum amount of chemical substances; thereby providing the loess board which is environmentally friendly, and which minimizes environmental pollution when scrapping construction materials.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a conductive heating ocher board containing graphene and a method of manufacturing the heating ocher board,

The present invention relates to a loess board used as an interior material of a building and a method of manufacturing the same. More particularly, the present invention relates to an improvement in stability and durability that can withstand a long time at a high temperature while improving thermal conductivity, The present invention relates to a conductive heating gypsum board containing graphene and a method for manufacturing the gypsum board.

In general, a board refers to a gypsum board used as a wall material and a text board used as a ceiling material, and is an architectural interior material mostly used in houses (including apartments) and general office buildings.

Particularly, the gypsum board used as such a building interior material is used in a large amount, as it is mostly applied to the interior wall of a building for the purpose of its heat insulation action.

However, in the case of such a conventional board, many problems have arisen. That is, the gypsum board and the text board are becoming a main cause of indoor environmental pollution due to indoor air pollution and harmful gas generation, and recently, It is true. Especially, when replacing, disposal of building materials causes pollution and collection of waste materials in neighboring areas

In recent years, there has been a rise in the popularity of well-being, and there has been an improvement in food and shelter. In particular, the preference of environmentally friendly buildings in construction of buildings is considerable. In addition, recently, In the United States.

Accordingly, it is urgently required to provide an excellent heat insulation effect and to develop an environmentally friendly insulation material for an interior material used in building a building according to the demand of the consumer as described above.

Korean Patent Application Registration No. 10-0969308.

DISCLOSURE Technical Problem The present invention has been devised to solve the above-mentioned problems, and it is an object of the present invention to provide a graphene for improving the stability and durability which can endure for a long time at a high temperature by improving the electric conductivity and the thermal conductivity, The present invention provides a method of manufacturing a conductive heating gypsum board and a method of manufacturing the same.

Also, there is provided a conductive heating ocher board containing graphene for minimizing the chemical composition and making it possible to minimize environmental contamination when disposing of building materials, which is very environmentally friendly, and a method for manufacturing such a heating ocher board It is an object of the invention.

In order to attain the above object, the present invention provides a method for producing a clay loam comprising a first loess layer, a horseshoe stiffening layer and a second loess layer in a laminated structure, wherein a loess layer is formed on the surfaces of the first loess layer and the second loess layer,

Preparing a material for preparing ocher powder, clay powder, wood flour, mulberry leaf, graphene solution and water obtained by completely drying the flour at a moisture content of 0% at 200 to 300 mesh;

A method of producing a dough comprising 50 to 60% by weight of loess powder, 10 to 15% by weight of clay, 2 to 5% by weight of wood powder, 10 to 15% by weight of mulberry leaf, 0.1 to 5% by weight of graphene solution, And 10 to 20% by weight of water to obtain an ocher dough;

A first drying step in which the dough obtained in the above is agitated with a moisture content of 10 to 15% and dried;

A molding step of putting the dried dough into a molding die and compression-molding the dough into a plate form;

A yellow clay coating step of forming a yellow clay coating layer by applying yellow clay coating on both sides of a molded plate material; And

And then performing a second drying step in which the loess coat is naturally dried until it is completely dried.

As described above, the conductive exothermic loess board containing graphene and the method for manufacturing the exothermic loess board contain graphene, which is remarkably excellent in electrical conductivity and thermal conductivity, It is possible to obtain the effect of improving the heat storage effect of heat while improving the stability.

In addition, by using yellow loess which is minimized in chemical composition, it is very eco-friendly since it improves the air purification and deodorization function, improves the humidity control ability, improves the detoxification and sterilization action, The effect of minimizing pollution of the city environment can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view of a conductive exothermic loess board containing graphene of the present invention.
FIG. 2 is an overall process diagram showing a method of manufacturing a conductive heating gypsum board containing graphene of the present invention. FIG.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, according to the present invention, a conductive heat generating yellow clay board containing graphene,

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view of a conductive exothermic loess board containing graphene of the present invention.

As shown in FIG. 1, the conductive heating yellowboard 100 containing graphene according to the present invention comprises a first loess layer 110, a Hanji reinforcing layer 120, a second loess layer 130 and a loess layer 140 ) Constitute a laminated structure.

Here, the first and second loess layers 110 and 130 are composed of loess powder, clay, wood, mica, graphene, and water,

The loess powder is in the form of a powder having a particle size of 200 to 300 mesh, and is applied in an amount of 50 to 60% by weight based on 100% by weight of the loess layer.

At this time, loess is a fine particle containing a lot of minerals such as silica (SiO 2), alumina (Al 2 O 3), iron powder, magnesium (Mg), sodium (Na), carly and the like, It has a humidity control function that keeps comfortable humidity according to the ambient humidity, and a thermal insulation function that reduces the loss of heat by heat insulation and heat storage. It also has antibacterial, insecticide and deodorizing effect by long-term accumulated soil microorganisms and enzymatic action. Air purifying function by the pollutant removing effect, and the like, and is applied as the main ingredient of the present invention.

The clay is applied in an amount of 10 to 15% by weight based on 100% by weight of the clayey layer.

In this case, the clay is produced from soil or weathered rock, and has a two-layer structure such as kaolin with a layer structure such as mica, and a three-layer structure such as montmorillonite, The surface area per unit weight is much larger than that of nasylite, and the water retaining ability is strong and the cohesive force is improved when it is in contact with water. Therefore, when the present invention is applied to the present invention, cohesion with the loess is improved.

The wood flour is applied in an amount of 2 to 5% by weight based on 100% by weight of the clayey layer.

At this time, when applying the wood flour to the loess board of the present invention, light weight and elasticity can be given, and if it is applied in an amount of 2 to 5% by weight or more, the strength of the loess board may be lowered. It may lead to an increase and a decrease in elastic force.

In addition, 10 to 15% by weight of the dead leaves are applied to 100% by weight of the clayey.

At this time, it is possible to improve the strength of the yellow clay board when applied to the present invention, as it is used as a material of a hardened ground, as is known in the art.

The graphene solution is applied in an amount of 0.1 to 5% by weight based on 100% by weight of the clayey layer.

At this time, the graphene solution is an oxide solution obtained by oxidizing graphene in a state where impurities are removed by pretreatment, thereby improving thermal conductivity when applied to the present invention.

On the other hand, as is known, graphene for obtaining the graphene solution is a material having two-dimensional honeycomb structure connected to each other in a hexagonal shape, and graphene is the most excellent material among the existing materials The thinner the thickness is 0.2 nm, the higher the transparency and the current which is 100 times higher than copper at room temperature can be delivered 100 times faster than silicon. In addition, the thermal conductivity is twice as high as the highest diamond. The mechanical strength is more than 200 times stronger than steel, but it is stretchable and does not lose its thermal conductivity even when stretched or folded.

The water is applied in an amount of 10 to 20% by weight based on 100% by weight of the clayey layer.

The Hanji reinforcing layer 120 is formed between the first and second loess layers 110 and 130,

At this time, hanji is obtained by using the mulberry [楮] or the mulberry mulberry [三枝楮] husk as a raw material, and it is known that it has a long life and is excellent in warmth and ventilation. The excellence of Hanji can be seen soon compared with Yangji. In other words, sunshine is an acidic ground less than PH 4.0, and its lifespan is 50 ~ 100 years, it causes yellowish yellowing and cutting, compared with alkaline ground of pH 9.0 and above, Or more. In addition, as well as having a nature that is friendly to natural phenomena and has a property of sucking moisture and sucking moisture and spouting it, the present invention improves strength and durability when applied between the first and second loess layers 110 and 130 Lt; / RTI >

The loess coat layer 140 is applied to the surface of the first and second loess layers 110 and 130. The loess coat layer 140 comprises 60 to 70% by weight of loess powder of 200 to 300 mesh per 100% by weight of the loess coat, And 30 to 40% by weight of a mixture of a mixture of a yellow lacquer and a yellow lacquer.

Hereinafter, a method for manufacturing a conductive heating gypsum board containing the graphene according to the present invention will be described.

FIG. 2 is an overall process diagram showing a method of manufacturing a conductive heating gypsum board containing graphene of the present invention. FIG.

As shown in FIG. 2, the method for manufacturing a conductive heating gypsum board containing graphene according to the present invention comprises a material preparing step (S100), a kneading step (S200), a first drying step (S300) , A yellow clay coating step (S500), and a second drying step (S600).

First, in the material preparation step (SlOO), the material for forming the loess board is roughly prepared, and loess powder, clay powder, slaked lime, mica grains, graphene solution and water are prepared.

At this time, the loess powder used as the main material to be prepared may be any of those having a particle size of 200 to 300 mesh, and prepared in a completely dried state with a moisture content of 0%.

Further, in order to obtain a graphene solution, a graphene solution preparation step (S110) is further performed,

In the graphene solution preparation step (S110), 50 ml of sulfuric acid (H2SO4) was heated to 90 占 폚 using a hot stove, 10 g of potassium persulfate (K2S2O8) and 10 g of phosphorus pentoxide were added, The stirred mixture was cooled to 80 DEG C, 12 g of graphite was added, and the mixture was reacted for 4 to 5 hours. After heating was stopped, the mixture was diluted with 2 L of distilled water for 12 hours while stirring. After filtering the graphite using a nylon filter, extract only the solution.

Thereafter, 2 L beakers were put in a thermostatic chamber at 0 ° C, 460 mL of sulfuric acid was put in a beaker, and pre-treated grains were placed in a beaker. The mixture was stirred in 60 g of potassium permanganate (KMnO 4) Then, the beaker was taken out and placed in a thermostatic chamber at 35 ° C. and stirred for 2 hours. While maintaining the temperature at 40 ° to 50 ° C. in a thermostatic chamber at 0 ° C., 920 mL of distilled water was divided into 20 to 30 mL and stirred for 2 hours. (HCl) and distilled water were mixed at a ratio of 1: 2, after adding 2.8 L of water, diluting with stirring for 3 hours, adding 20 to 30% by weight of hydrogen peroxide (H2O2) Water is added to PH 5 to 7 to obtain a graphene solution.

Thereafter, the kneading step (S200)

The dough is made by using the above-prepared material, and is composed of 50 to 60 wt% of loess powder, 10 to 15 wt% of clay, 2 to 5 wt% of wood powder, 10 to 15 wt% 0.1 to 5% by weight of the solution and 10 to 20% by weight of water are mixed and mixed.

At this time, the kneading step (S200) is performed by sequentially performing the first kneading step (S210) and the second kneading step (S220)

First, the first kneading step (S210) comprises mixing 50 to 60 wt% of loess powder, 10 to 15 wt% of clay, 2 to 5 wt% of wood powder, 0.1 to 5 wt% of graphene solution % Of water and 10 to 20 wt% of water are mixed to obtain a primary yellow clay paste.

Thereafter, in the second kneading step (S220), the primary loess dough is further mixed with 10 to 15% by weight of mulberry bran to 100% by weight of the kneaded whole to obtain a secondary loess dough.

Here, the first kneading step (S210) and the second kneading step (S220) are performed separately. When the kneading is performed in the first kneading step (S210) In order to prevent this, it is possible to maintain the fiber of the mulberry tree by additionally adding it in a state where the primary dough is mixed with water in order to prevent it from being mixed.

Thereafter, the first drying step (S300)

The thus obtained loess dough is dried to a moisture content of 10 to 15%, so that the shape of the dough is not changed when no external force is applied.

Thereafter, in the forming step S400,

The thus-obtained yellow loam dough is compression-molded in the form of a sheet material. To do so, firstly, 50% by weight of the yellow loam dough is spread out on the bottom of the dough for one hundred weight% of the dough .

Thereafter, as described above, in a state in which the yellow clay dough is filled, a layer of one layer is laminated on the upper layer, and a liquid adhesive is sprayed onto the surface of the paper, so as to wet the hyaline dough. At this time, And the adhesive strength between the adhesive layer and the adhesive layer.

1, the upper and lower first and second loess layers 110 and 110 may be formed by pressing and pressing the remaining dough 50% by weight, (130) and the internal hardening layer (120).

Then, the loess coating step (S500)

The surface of the thus obtained plate material, that is, the surface of the first and second loess layers 110 and 130, is coated with the loess coating layer 140 to complete the surface of the loess board.

At this time, the ocher paint

The clay coat layer 140 is applied to the surface of the first and second clayey layers 110 and 130. The clayey coat is used in an amount of 200 to 300 mesh, 70% by weight of water and 30 to 40% by weight of water are mixed. When the water content is more than 10% by weight, the ocher coating material becomes thinner and the ocher material is not smoothly applied, Or less, the aggregation of the yellow clay puddles occurs, thereby causing a problem in maintaining the surface.

Thereafter, the second drying step (S600)

As described above, in the state in which the clay coat is coated, the clay coat may be naturally dried at room temperature until the clay coat is completely dried.

Thus, through the above-described series of steps, the conductive exothermic loess board containing graphene is completed.

On the other hand, the loess board of the present invention produced by the above-described manufacturing process was cut into a size of 100 * 100 mm to obtain a specimen, and the specimen was subjected to power supply, and the external strain state and compressive strength were measured while the temperature was being applied.

[Example]

division
Mixing ratio (%)
Observation period
(Work) Allowable temperature
(° C) Exterior Compressive strength
(Mpa) Loess powder 55

20

208

clear

45

clay 13 Wood flour 3 Mulberry leaves 12 Graphene solution 2 water 15

[Experiment result]

As can be seen from the test results, the conductive heat-generating yellow clay board containing the graphene of the present invention showed no apparent abnormality up to a high temperature of 208 ° C, and the compressive strength was also excellent.

As described above, the conductive exothermic loess board containing graphene and the method for manufacturing the exothermic loess board of the present invention can obtain stability according to the temperature change.

100: loess board 110: first clayey
120: Hanji reinforcing layer 130: 2nd Horticulture
140: Loess coat layer
S100: material preparing step S200: kneading step
S210: First dough step S220: Second dough step
S300: First drying step S400: Forming step
S500: Loess coating step S600: Second drying step

Claims

The first clayey layer 110, the hanji enhancement layer 120 and the second clayey layer 130 have a laminated structure and the surface of the first clayey layer 110 and the second clayey layer 130 are coated with a clayey coating layer (140) is formed on the surface of the conductive foaming board.

The method according to claim 1,
The first loess layer 110 and the second loess layer 130,
A method for producing a green loam according to claim 1, wherein 50 to 60 wt% of loess powder of 200 to 300 mesh, 10 to 15 wt% of clay, 2 to 5 wt% of wood powder, 10 to 15 wt% To 5% by weight of water and 10 to 20% by weight of water.

The method according to claim 1,
The graphene solution,
Wherein the graphene is an oxide solution obtained by pretreating graphene and oxidizing the graphene while removing impurities.

The method according to claim 1,
The yellow clay coating layer 140 is formed by,
Wherein the clay is mixed with 60 to 70 wt% of loess powder of 200 to 300 mesh and 30 to 40 wt% of water based on 100 wt% of the loess coat.

In the method for producing the loess board,
(S100) of preparing loess powder, clay powder, wood flour, mica seeds, graphene solution and water obtained by completely drying up to a water content of 0 to 200%, which is 200 to 300 mesh.
A method of producing a dough comprising 50 to 60% by weight of loess powder, 10 to 15% by weight of clay, 2 to 5% by weight of wood powder, 10 to 15% by weight of mulberry leaf, 0.1 to 5% by weight of graphene solution, , And 10 to 20% by weight of water to obtain an ocher dough (S200);
A first drying step (S300) of drying the dough obtained by stirring the dough to a moisture content of 10 to 15%;
A molding step (S400) of putting the dried dough into a molding die and compression-molding the dough into a plate form;
A yellow clay coating step (S500) in which a yellow clay coating is formed by applying a yellow clay coating on both sides of a molded plate; And
Wherein the second drying step (S600) is carried out until the ocher coating material is completely dried.

6. The method of claim 5,
In the material preparation step S100,
A graphene solution preparation step (S110) for producing a graphene solution is further performed,
10 ml of potassium persulfate (K2S2O8) and 10 g of phosphorus pentoxide were added to 50 ml of sulfuric acid (H2SO4) heated to 90 deg. C with a hot water bath,
The stirred mixture was cooled to 80 DEG C, 12 g of graphite was added thereto, and the mixture was reacted for 4 to 5 hours. Then, heating was stopped, and the mixture was diluted with 2 L of distilled water for 12 hours while stirring.
The diluted solution was filtered through a 0.2 mu m nylon filter to extract the solution,
The extracted solution was put in a 2 ° C beaker in a thermostat at 0 ° C, 460 ml of sulfuric acid was put in a beaker, and the pretreated graphene was placed in a beaker,
60 g of potassium permanganate (KMnO 4) was added to the beaker and stirred until the mixture was completely dissolved. The beaker was taken out, placed in a thermostatic chamber at 35 ° C, stirred for 2 hours,
The mixture was further stirred in a constant temperature oven at 40 ° C to 50 ° C for 2 hours while 920 ml of distilled water was divided into 20 to 30 ml. The mixture was diluted with stirring for 3 hours,
After adding 20 to 30% by weight of hydrogen peroxide (H 2 O 2) to 100% by weight of diluted water, water mixed with hydrogen chloride (HCl) and distilled water at a ratio of 1: To obtain an oxide solution,
Wherein the graphene solution is applied in an amount of 0.1 to 5 wt% based on 100 wt% of the dough.

6. The method of claim 5,
The kneading step (S200)
A mixture of 50 to 60 wt% of loess powder, 10 to 15 wt% of clay, 2 to 5 wt% of wood powder, 0.1 to 5 wt% of graphene solution and 10 to 20 wt% of water, based on 100 wt% A first kneading step (S210) for obtaining a primary loess dough; And
Wherein a second dough step (S220) is performed in which the first loess dough is further mixed with 10-15% by weight of mica wood porridge based on 100% by weight of the kneaded dough to obtain a second loess dough, Method of manufacturing an exothermic loess board.

6. The method of claim 5,
In the forming step S400,
On the bottom of the molding frame, 50% by weight of the yellow loam dough is spread evenly on the floor with respect to 100% by weight of the loess board corresponding to one of the loess boards, and one layer of the loess is laminated on the floor, And the remaining 50% by weight of dough is covered on top of Korean paper, followed by compression molding, wherein the graphene-containing conductive heating yellow ocher board is produced.

6. The method of claim 5,
The loess coating material used in the loess coating step (S500)
Wherein 60 to 70% by weight of loess powder of 200 to 300 mesh and 30 to 40% by weight of water are mixed with 100% by weight of the loess coating, and water is mixed with graphene.