KR101689872B1 - Heating artificial marble - Google Patents

Abstract

The present invention relates to heating artificial marble comprising: a top panel made of artificial marble waste dust, and including 60-65 parts by weight of aluminum hydroxide (Al(OH)_3) and 40-45 parts by weight of polymethyl methacrylate (PMMA); a bottom panel disposed in the bottom of the top panel, made of artificial marble waste dust, and including 60-65 parts by weight of aluminum hydroxide (Al(OH)_3) and PMMA; at least one hollow part formed by interlinking a second cross-shaped groove in the bottom of the top panel and a first cross-shaped groove in the top of the bottom panel; and a carbon fiber heater inserted in the hollow part.

Description

{HEATING ARTIFICIAL MARBLE}

The present invention relates to a heat-generating artificial marble, and more particularly, to a heat-producing artificial marble which can be used as a building material which is eco-friendly and excellent in heat insulation and sound absorption by utilizing waste dust of artificial marble.

Recently, in accordance with the United Nations Framework Convention on Climate Change (UNFCCC) held in Paris, energy conservation and environmental regulations have been strengthened, and the need for environmentally friendly materials is emerging.

In this regard, measures to reduce carbon emissions have become important.

As a way to reduce carbon emissions, heating efficiency can be improved by using energy-efficient building materials. As a result, carbon emissions can be reduced.

To this end, artificial marble can be utilized as an environmentally friendly material.

Artificial marble is formed by compression-molding natural ore powder or synthetic inorganic material powder as a filler and curing it with resin.

 The fillers used herein include aluminum hydroxide, barium carbonate, calcium carbonate, barium sulfate, silica, granite, and stones.

As the resin material, thermoplastic methyl methacrylate (MMA) resin and thermosetting unsaturated polyester resin are used.

Artificial marble containing such filler and resin material is widely used as building material.

However, artificial marble, which is discarded or discarded, is abandoned by landfill or incineration, which is a source of secondary soil contamination.

In particular, MMA or PMMA, which corresponds to petroleum, is an environmental pollutant source that releases pollutants in the process of incineration and combustion.

In the processing of acrylic marble surface, waste dust, which is a mixture of acrylic resin and aluminum hydroxide, is used as a filler for flooring and the rest is mostly buried as waste.

In order to solve this problem, a technique for building materials using artificial marble pulverized dust has been sought.

In the prior art, Korean Patent Laid-Open Publication No. 10-2006-0028206 (the name of the invention: a glass plate using waste glass and artificial stone and a manufacturing method thereof) has been proposed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a heat-generating artificial marble which is eco-friendly and utilizes waste dust of artificial marble and contains carbon fiber and has high heat generation efficiency.

In order to solve the above-mentioned problems, the present invention relates to an upper panel comprising 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃ ) and 40 to 45 parts by weight of PMMA (poly methyl methacrylate) A lower panel disposed below the upper panel and comprising 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃ ) and 40 to 45 parts by weight of PMMA (Poly methyl methacrylate), made of artificial marble waste dust; At least one hollow portion formed by engaging a second groove in a cross shape below the upper panel and a first groove in a cross shape above the lower panel; And a carbon fiber heating element inserted into the hollow portion.

The carbon fiber heating element may include carbon fiber electric wires, and the carbon fiber electric wire may be formed of polyacrylonitrile (PAN) carbon fibers having a length of 10 mm.

In addition, the present invention provides a method for producing an artificial marble, which comprises the steps of: 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃ ) and 40 to 45 parts by weight of PMMA (poly methyl methacrylate) A plurality of heat generating panels formed as a 'letter' or 'convex'letter; (1) having a performance of not more than 10 volts (VOLT) and not more than 1 ampere (Amp) so as to transmit heat to the heat generating panel and having a high temperature of 100 DEG C to 150 DEG C An electrode portion; And a heater which is formed on the other side where the protrusion is located and has a performance of not more than 10 volts of voltage and not more than 1 ampere of ampere to transmit heat to the heat generating panel, Wherein the plurality of heat generating panels have a structure in which the protrusions are alternately arranged in a staggered manner.

The surfaces of the first electrode portion and the second electrode portion may be coated with silver (Ag).

Further, the present invention may further include a filler for increasing the strength of any one of the upper panel, the lower panel, and the heat generating panel.

Further, the present invention may further include a flame retardant agent for reinforcing the flame retardancy of any one of the upper panel, the lower panel, and the heat generating panel.

In order to improve the heat insulating property and the sound absorption property of any one of the upper panel, the lower panel and the heat-generating panel, the present invention may be applied to various materials such as perlite, vermiculite, peat moss, peridotite, pegmatite, at least one of pegmatite and pumice.

The present invention can provide a heat-resistant artificial marble that is inexpensive yet environmentally friendly by recycling artificial marble waste dust that is waste material to be discarded.

Further, the present invention can reduce the energy by providing the heat-generating artificial marble using carbon fiber.

Further, the present invention can absorb electromagnetic waves, and can provide a heat-generating panel that is safe from electromagnetic waves.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a heat-generating artificial marble according to a first embodiment of the present invention. Fig.
FIG. 2 is a bottom panel of a heat-generating artificial marble according to a first embodiment of the present invention shown in FIG. 1; FIG.
3 is a view showing a heat-generating artificial marble according to a second embodiment of the present invention.

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various transformations can be applied and various embodiments can be made. It is to be understood that the following description covers all changes, equivalents, and alternatives falling within the spirit and scope of the present invention.

In the following description, the terms first, second, and the like are used to describe various components and are not limited to their own meaning, and are used only for the purpose of distinguishing one component from another component.

Like reference numerals used throughout the specification denote like elements.

As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms " comprising, "" comprising, "or" having ", and the like are intended to designate the presence of stated features, integers, And should not be construed to preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 3.

FIG. 1 is a view showing a heat-generating artificial marble according to a first embodiment of the present invention, and FIG. 2 is a bottom panel of a heat-generating artificial marble according to a first embodiment of the present invention shown in FIG.

1 and 2, a heating artificial marble 1 according to a first embodiment of the present invention includes an upper panel 10, a lower panel 20, a first groove 30, a second groove 31, A hollow portion, and a carbon fiber heating body 40.

The top panel 10 may be made of artificial marble waste dust. The upper panel 10 may include 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃ ) and 40 to 45 parts by weight of poly methyl methacrylate (PMMA).

A second groove 31 in the form of a cross may be formed on the lower side of the upper panel 10.

The second grooves 31 may be plural.

In addition, a semicircular groove may be formed on the lower side of the upper panel 10. Further, the grooves of the upper panel 10 may be formed in a plurality of grooves.

The lower panel 20 may be disposed on the lower side of the upper panel 10. The bottom panel 20 can be made of artificial marble waste dust. The lower panel 20 may include 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃ ) and 40 to 45 parts by weight of poly methyl methacrylate (PMMA).

A first groove 30 having a cross shape may be formed on the upper side of the lower panel 20.

The first grooves 30 may be plural.

In addition, a semicircular groove may be formed on the upper side of the lower panel 20. Further, the grooves of the lower panel 20 may be formed in a plurality of grooves.

Specifically, the upper panel 10 and the lower panel 20 can be made of artificial marble waste dust.

For reference, artificial marble is a building material manufactured by curing a natural ore powder or synthetic inorganic material powder as a filler with a resin and molding it with a compression press.

 As the filler of artificial marble, aluminum hydroxide, barium carbonate, calcium carbonate, barium sulfate, silica, granite and stone can be used.

As the resin of the artificial marble, thermoplastic methyl methacrylate (MMA) resin, thermosetting unsaturated polyester resin and PMMA (Poly methyl methacrylate) can be used.

The upper panel 10 and the lower panel 20 according to the embodiment of the present invention can be manufactured as waste dusts of abandoned artificial marble.

The upper panel 10 and the lower panel 20 may be manufactured by crushing artificial marble and mixing the artificial marble powder raw material, which is produced in the form of particles having a grain size of 0.1 to 3 mm, with cement or a mixed raw material.

The particle size of the powder raw material is preferably 0.1 to 3 mm. If the particle size is less than 0.1 mm, the processability of manufacturing the panel may be deteriorated. In addition, when the particle size is more than 3 mm, there is a possibility that the porosity is increased in the panel and the strength is lowered.

The mixed raw material may include at least one of fly ash, silicon oxide, magnesium oxide, and calcium carbonate.

Further, the upper panel 10 and the lower panel 20 can be manufactured by mixing artificial marble waste dust and cement. In this case, the mixture of artificial marble pulverized dust and cement can be subjected to a pretreatment process by extrusion molding.

Thus, the mixture after the pretreatment process has little pore, and can have high strength and high density.

After the preprocessing step, the molded panel molding may be dried at a temperature of 60 ° C to 110 ° C for 6 hours to 24 hours. Through drying, the artificial marble pulverized dust and cement material, which are components contained in the panel moldings, can be firmly bonded.

In addition, durability of the panel moldings can be improved by removing moisture contained in the panel moldings.

The dried panel-formed product may be subjected to heat treatment at a temperature of 300 ° C to 800 ° C for 4 hours to 24 hours.

Through this heat treatment, a panel having high strength can be manufactured.

The upper panel 10 and the lower panel 20 may contain 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃ ) and 40 to 45 parts by weight of poly methyl methacrylate (PMMA).

Aluminum hydroxide (Al (OH) ₃ ) may be a component included in artificial marble. Aluminum hydroxide (Al (OH) ₃ ) can be extracted and used from abandoned artificial marble.

Aluminum hydroxide is a hydroxide of aluminum and is a hydrous oxide. Aluminum hydroxide is characterized by gelation when it is in contact with water for a long time.

Aluminum hydroxide can be used as an adsorbent, an ion exchanger, a fixing agent for chromatography, and an antacid.

The blending amount of aluminum hydroxide may be 60 to 65 parts by weight. If the blending amount of aluminum hydroxide is less than 60 parts by weight, the exothermic effect of the exothermic panel may be insignificant. When the amount of the aluminum hydroxide is more than 65 parts by weight, the strength of the exothermic panel may be lowered.

PMMA (Poly methyl methacrylate) can be a component included in artificial marble. PMMA (polymethylmethacrylate) can be extracted and used in abandoned artificial marble.

The artificial marble used in the present invention is preferably an acrylic artificial marble. Acrylic artificial marble can be a non-porous artificial marble composed mainly of PMMA resin, composed of an inorganic filler and additives, and having a uniform composition on the surface and inside.

PMMA (polymethyl methacrylate) is a material having high transparency and weather resistance. PMMA is resin used for automobile parts such as lamp cover and meter cover. PMMA has a pyrolysis temperature of about 330 ° C. PMMA has a higher transparency than glass. In particular, a window made of PMMA (polymethacrylate) can maintain its transparency even if its thickness exceeds 30 centimeters, unlike a glass whose transparency drops sharply when made thick.

Polymethacrylates can be prepared by free radical polymerization using methyl methacrylate as a monomer.

The blending amount of PMMA may be 40 to 45 parts by weight. If the blending amount of PMMA is less than 40 parts by weight, the corrosion resistance of the exothermic panel may be deteriorated. If the blending amount of PMMA exceeds 45 parts by weight, the impact strength of the heat generating panel may be lowered.

For reference, aluminum hydroxide and PMMA (poly methyl methacrylate) can be extracted from artificially marble marble by thermal distillation.

In addition, carbon fibers can be mixed with artificial marble waste dust. In this case, polyacrylonitrile (PAN) carbon fibers having a length of 10 mm can be mixed with artificial marble pulverized dust and a mixer at 1000 rpm to 1500 rpm for 30 seconds to 120 seconds.

Here, when polyacrylonitrile (PAN) based carbon fibers are produced to a length of 5 mm, they are characterized by good dispersibility but poor contact between carbon fibers. In addition, when polyacrylonitrile (PAN) based carbon fibers are produced to have a length of 15 mm, they may aggregate with each other, resulting in lowering of dispersibility and lowering of electric conductivity.

When polyacrylonitrile (PAN) based carbon fibers are manufactured to have a length of 10 mm, dispersibility is high without being clustered together, and contact between the carbon fibers can be smoothly carried out, resulting in high electrical conductivity.

For reference, the current has a characteristic of generating heat when flowing in a material having a constant resistance value.

Therefore, when the upper panel 10 and the lower panel 20 include polyacrylonitrile (PAN) carbon fibers, the resistance value of the inside of the upper panel 10 and the lower panel 20 increases, .

Also, the upper panel 10 and the lower panel 20 may be joined together using an adhesive.

A plurality of hollow portions may be formed between the upper panel 10 and the lower panel 20. Specifically, the hollow portion may be formed by engaging the second groove 31 on the lower side of the upper panel 10 and the first groove 30 on the upper side of the lower panel 20.

The hollow portion may be formed by engaging a second groove 31 in the form of a cross and a first groove 30 in the form of a cross in the upper side of the lower panel 20 below the upper panel 10. The hollow portion may be at least one or more.

The carbon fiber heating body 40 can be inserted into the hollow portion. The carbon fiber heating body 40 may be fitted in the first groove 30 or the second groove 31 in a cross shape. In addition, the carbon fiber heater body 40 can be fitted in the first groove 30 or the second groove 31 in a straight or zigzag form.

The plurality of carbon fiber heating elements 40 may be provided. In addition, the carbon fiber heater 40 may generate heat. The carbon fiber heating body 40 may be connected to a separate power supply (not shown).

Further, the carbon fiber heating body 40 may include an electric wire.

The carbon fiber electric wire may be in the form of a polyacrylonitrile (PAN) carbon fiber having a length of 10 mm.

In addition, the carbon fiber electric wire may be made of polyacrylonitrile (PAN) carbon fiber having a length of 10 mm.

In addition, the carbon fiber electric wire can be heated. As described above, the thermal energy generated in the carbon fiber electric cable is transmitted to the upper panel 10 and the lower panel 20, so that the upper panel 10 and the lower panel 20 can be heated.

In addition, the carbon fiber cable may include two power supply lines for supplying power.

3 is a view showing a heat-generating artificial marble according to a second embodiment of the present invention.

Referring to Fig. 3, the heat-generating artificial marble 2 according to the second embodiment of the present invention includes the same components as those of Figs. 1 and 2 except that the panel is made of another structure. Therefore, the same reference numerals are given to the same constituent elements, and redundant description of the same constituent elements is omitted, and the modified constituent elements will be mainly described.

3, a heat-generating artificial marble 2 according to a second embodiment of the present invention includes a heat generating panel 50, a first electrode unit 60, a second electrode unit 61, and a protrusion 70 can do.

The exothermic panel 50 may be made of artificial marble waste. The heat generating panel 50 may include 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃ ) and 40 to 45 parts by weight of PMMA (poly methyl methacrylate). The heat generating panel 50 may have a protrusion 70 formed on one surface thereof and may be formed of 'ㅗ' or 'convex'. The heat generating panel 50 may be a plurality of heat generating panels.

For reference, the material and manufacturing method of the heat generating panel 50 of the present invention may be the same as the principle of manufacturing the upper panel 10 and the lower panel 20 described above.

The first electrode unit 60 may be formed on one side where the protrusion 70 is located. The first electrode unit 60 may generate a high temperature of 100 ° C to 150 ° C while having a voltage of 10 volts or less and a current of 1 ampere or less so as to transmit heat to the heat generating panel 50 .

Further, the first electrode unit 60 may be connected to a '+' power supply line.

In addition, the first electrode unit 60 can receive DC or AC power.

A power supply (not shown) capable of supplying DC or AC power to the first electrode unit 60 and setting the temperature and setting the timer can be connected. The power supply can be controlled by voltage, and can be used with both DC and AC.

The second electrode portion 61 may be formed on the other side where the protrusion 70 is located. The second electrode unit 61 may generate a high temperature of 100 ° C to 150 ° C while having a voltage of 10 volts or less and a current of 1 ampere or less so as to transfer heat to the heat generating panel 50 .

The second electrode portion 61 may be formed to face the first electrode portion 60 with the protrusion 70 as a center. The second electrode unit 61 may transmit heat to the heat generating panel 50. The second electrode unit 61 may be connected to a negative power supply line. In addition, the second electrode unit 61 may be supplied with DC or AC power. Further, a power supply unit (not shown) capable of supplying DC or AC power to the second electrode unit 61 and setting the temperature and setting the timer can be connected. Here, the power supply device is capable of adjusting the voltage and can be used in combination with direct current and alternating current.

The first electrode portion 60 and the second electrode portion 61 have a pressure of 90 kgf / cm < ² > Lt; RTI ID = 0.0 > 250 C < / RTI > Accordingly, the first electrode portion 60 and the second electrode portion 61 may have a flexural strength of 27 to 35 kgf / cm ² .

In addition, it may further include a DC type rechargeable battery that can supply DC power to the first electrode unit 60 and the second electrode unit 61 and can perform charging and discharging.

In another embodiment, the first electrode unit 60 and the second electrode unit 61 may be electrodes formed by stacking polyacrylonitrile (PAN) carbon fibers having a length of 10 mm.

Specifically, the first electrode portion 60 and the second electrode portion 61 may be formed in the shape of a strip of a conductive electrode made of copper (Cu). The widths of the first electrode portion 60 and the second electrode portion 61 may be 10 to 30 mm.

The first electrode unit 60 and the second electrode unit 61 may be connected to each other. Thus, electricity can be transmitted.

In addition, the surfaces of the first electrode portion 60 and the second electrode portion 61 may be coated with silver (Ag).

The first electrode unit 60 and the second electrode unit 61 may be silver-silver chloride electrodes. For reference, the silver-silver chloride electrode refers to an electrode (Ag | AgCl | Cl-) formed by forming a layer of silver chloride on the surface of the electrode and inserted in a solution containing chloride ions. It is a kind of reference electrode and widely used because it has good stability and reproducibility of dislocation and is relatively simple to handle. To prepare it, a saturated solution of potassium chloride may be used as the solution.

Silver (Ag) is used, it is possible to reduce the manufacturing cost of the first electrode portion 60 and the second electrode portion 61 while maintaining the performance of the electrode.

The first electrode portion 60 and the second electrode portion 61 may be formed of a copper tape, a carbon fiber, a carbon nanotube (CNT), or a silver (Ag) paste.

In another embodiment, the surfaces of the first electrode unit 60 and the second electrode unit 61 may be formed by a roll-to-roll coating method using a silver wire coating liquid.

Referring to FIG. 3, it can be seen that the heat-generating artificial marble according to the second embodiment of the present invention comprises a plurality of heat-generating panels 50.

The plurality of heat generating panels 50 may be structured such that the protrusions 70 are alternately arranged in a staggered manner.

The control panel may further include a control module (not shown) to control the temperature of the upper panel 10, the lower panel 20, or the heating panel 50.

The control module unit can adjust the temperature of the upper panel 10, the lower panel 20, or the heating panel 50.

Specifically, the control module unit may include a power button, a temperature setting unit, a temperature display unit, a timer, and a display unit.

The power button can turn on or off the operation of the carbon fiber heating element 40.

Also, the power button can turn ON or OFF the operation of the electrode unit 60.

The temperature setting section can set the temperature of the carbon fiber heater body (40) or the electrode section (60). The temperature setting range of the temperature setting section may be 25 ° C to 150 ° C.

The temperature display unit may display the temperature at which the carbon fiber heater 40 or the electrode unit 60 generates heat.

Here, a temperature sensor (not shown) for measuring the temperature of the carbon fiber heating element 40 or the electrode portion 60 may be formed. The temperature sensor can be connected to the temperature display unit.

The timer can control the time when the carbon fiber heating element 40 or the electrode portion 60 is operated. The time setting condition of the timer may be 5 minutes to 120 hours.

Here, the carbon fiber heater 40 or the electrode unit 60 may further include a display unit for displaying an operation time during which the carbon fiber heater 40 or the electrode unit 60 generates heat.

The display unit may be formed on one side of the control module unit.

The carbon fiber heating body 40 or the electrode unit 60 may be connected to a separate power supply unit.

Further, the present invention may further include a connector terminal portion.

Further, the connector terminal portion may be formed between the carbon fiber heater body 40 and the control module portion. Or the connector terminal portion may be formed between the electrode portion 60 and the control module portion.

The connector terminal portion may serve as an adapter for converting a household AC power source to a DC power source.

In addition, the '+' terminal and the '-' terminal may be provided on the connector terminal.

Further, in another embodiment, it may further include a filler to increase the strength of the upper panel 10, the lower panel 20, or the heating panel 50.

The filler may be prepared by adding a nanotube structure containing at least one of titanium oxide (TiO ₂ ), tungsten oxide (WO ₃ ) and tin oxide (SnO ₂ ).

Fillers such as titanium oxide (TiO ₂ ), tungsten oxide (WO ₃ ) and tin oxide (SnO ₂ ) used in the present invention can improve the heat resistance, durability and strength of the heat generating panel to be manufactured.

In addition, fillers such as titanium oxide (TiO ₂ ), tungsten oxide (WO ₃ ) and tin oxide (SnO ₂ ) increase the thermal stability of the heating panel by lowering the thermal expansion coefficient.

The blending amount of the filler such as titanium oxide (TiO ₂ ), tungsten oxide (WO ₃ ) and tin oxide (SnO ₂ ) is preferably 5 to 15 parts by weight per 40 to 45 parts by weight of the PMMA resin. If the blending amount of the filler is less than 5 parts by weight, the effect of improving the heat resistance and strength of the exothermic panel may be insignificant. If the blending amount of the filler exceeds 15 parts by weight, the amount of components not mixed with the PMMA resin increases, and the physical properties of the heat generating panel may be lowered.

In another embodiment, the flame retardant may further include a flame retardant agent to reinforce the flame retardancy of the upper panel 10, the lower panel 20, or the heating panel 50.

Examples of the flame retardant include halogen-based flame retardants, phosphorus-based flame retardants, inorganic flame retardants, and organic flame retardants.

Further, the flame retardant may include at least one of chlorinated paraffin, chlorinated polyethylene, antimony oxide, aluminum hydroxide, and magnesium hydroxide.

The blending amount of the flame retardant is preferably 10 to 20 parts by weight based on 40 to 45 parts by weight of the PMMA resin. When the blending amount of the flame retardant is less than 10 parts by weight, the effect of improving the flame retardancy of the exothermic panel may be insignificant. When the blending amount of the flame retardant is more than 20 parts by weight, the amount of components not mixed with the PMMA resin increases, and the tensile strength of the exothermic panel may be lowered.

In another embodiment, the upper panel 10, the lower panel 20, or the heating panel 50 may further include a porous material to improve the heat insulating property, the sound absorption property, or the electromagnetic wave shielding property.

The porous material may include at least one of perlite, vermiculite, peat moss, peridotite, pegmatite, and pumice.

It can be used by pulverizing perlite, vermiculite, peat moss, peridotite, pegmatite and pumice and pulverizing it to a particle size of 100 to 500 mesh. have.

The blending amount of the porous material is preferably 1 to 10 parts by weight per 40 to 45 parts by weight of the PMMA resin. When the blending amount of the porous material is less than 1 part by weight, the effect of improving heat insulation, sound absorption or electromagnetic wave shielding property of the exothermic panel may be insignificant. If the blending amount of the porous material is more than 10 parts by weight, the amount of components not mixed with the PMMA resin increases, and the durability of the exothermic panel may deteriorate.

In another embodiment, polySilsesquioxane having silicon polymer properties may be added to improve the flame retardancy and gas permeability of the upper panel 10, the lower panel 20, or the heat generating panel 50.

The blending amount of the polysilsesquioxane is 0.3 to 7 parts by weight based on 40 to 45 parts by weight of the PMMA resin. If the blending amount of the polysilsesquioxane is less than 0.3 part by weight, the effect of improving the flame retardancy of the exothermic panel may be insignificant. When the blending amount of the polysilsesquioxane exceeds 7 parts by weight, the amount of components not mixed with the PMMA resin increases, and the strength of the exothermic panel may be lowered.

In another embodiment, the upper panel 10, the lower panel 20, or the heat generating panel 50 may be coated with a PET film or a ceramic so as to be waterproof.

Another waterproof coating can be used to make it waterproof and insulated with silicone.

Further, the outer surface of the upper panel 10, the lower panel 20, or the heat-generating panel 50 may be water-repellent coated using a waterproof coating solution.

The waterproof coating solution may be composed of 20 to 38% by weight of urethane acrylate and 62 to 80% by weight of Solvent.

Also, 10 to 20 parts by weight of green tea extract extracted from green tea with hot water may be added to 100 parts by weight of the waterproof coating solution.

Green tea extract inhibits the propagation and growth of bacteria through the anti-inflammatory action of the tannin component contained in green tea.

In addition, catechin in green tea has strong antioxidant ability and can exterminate Salmonella, Vibrio, and pathogenic Escherichia coli.

The blending amount of the green tea extract is preferably 10 to 20 parts by weight. When the green tea extract is less than 10 parts by weight, the effect of eradicating the bacteria may be small. If the green tea extract is more than 20 parts by weight, the adhesion of the coating liquid may be deteriorated.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be clear to the person.

In addition, since the components shown in the drawings can be enlarged or reduced for convenience of description, the present invention is not limited to the size and the shape of the components shown in the drawings, Those skilled in the art will appreciate that various modifications and equivalent embodiments are possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: Fired artificial marble
2: Fired artificial marble
10: Upper panel
20: Lower panel
30: First Home
31: 2nd home
40: carbon fiber heating element
50: Heating panel
60: first electrode portion
61: second electrode portion
70: protrusion

Claims (7)

delete And 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃) and 40 to 45 parts by weight of PMMA (poly methyl methacrylate), and protrusions are formed on one surface to form 'ㅗ' or 'convex A plurality of heat generating panels formed in a "
A first electrode part formed on one side of the protruding part and generating high heat to transmit heat to the heat generating panel; And
And a second electrode portion formed on the other side where the protrusion is located and generating high heat to transmit heat to the heat generating panel,
Wherein the plurality of heat generating panels are structured such that the protrusions are alternately arranged alternately.
And 60 to 65 parts by weight of aluminum hydroxide (Al (OH) ₃ ) and 40 to 45 parts by weight of PMMA (poly methyl methacrylate), and protrusions are formed on one surface to form 'ㅗ' A plurality of heat generating panels formed in a "
(1) having a performance of not more than 10 volts (VOLT) and not more than 1 ampere (Amp) so as to transmit heat to the heat generating panel and having a high temperature of 100 DEG C to 150 DEG C An electrode portion; And
And a second heat generating panel having a performance of not more than 10 volts and a current of not more than 1 ampere to deliver heat to the heat generating panel, And an electrode portion,
Wherein the plurality of heat generating panels are structured such that the protrusions are alternately arranged alternately.
The method of claim 3,
Wherein the surfaces of the first electrode portion and the second electrode portion are coated with silver (Ag).
The method of claim 3,
And a filler for increasing the strength of the heat generating panel.
The method of claim 3,
And a flame retarding agent for reinforcing the flame retardancy of the heat generating panel.
The method of claim 3,
(EN) Disclosed is a method of manufacturing a heat insulating panel including at least one of perlite, vermiculite, peat moss, peridotite, pegmatite and pumice, which are porous materials, A heat-generating artificial marble.

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