KR20180091800A - Air cleaning filter for car comprising shungite and natural fullerene - Google Patents

Abstract

The present invention relates to an air cleaner filter for a vehicle comprising a shungite and natural fullerene, comprising: a support frame mounted in a filter insertion portion of a vehicle; a filtrating member formed in the support frame and filtrating air; and multifunctional particles having all three functions which are far-infrared radiation, antibacterial effect, and deodorization. The multifunctional particles have functions of far-infrared radiation, antibacterial effect, and deodorization and include shungite as natural mineral and/or the natural fullerene separated from the shungite. According to the present invention, the functions of far-infrared radiation, antibacterial effect, and deodorization, and productivity and economic feasibility are excellent.

Description

TECHNICAL FIELD [0001] The present invention relates to an air purifying filter for an automobile,

More particularly, the present invention relates to an air purifying filter for automobiles, and more particularly, to an air purifying filter for automobiles, which comprises multi-functional natural minerals such as Shungite and / or Natural Fullerene separated from the above- And an air purifying filter for automobiles which are excellent in deodorizing ability and have high productivity and economy.

Generally, automobiles are equipped with air conditioners and heaters for indoor cooling and heating. In the case of an air conditioner, it cools incoming air from outside and supplies cool air to the interior of the car.

Recently, due to the rapid increase in the number of automobiles, environmental pollution problems caused by dust and harmful gas generated by automobiles are getting worse. Contaminated air contains various pollutants including dust, dust, pollen, and bacteria, and if inhaled into the human body, causes respiratory disease.

Accordingly, the automobile is provided with an air purifying filter for purifying the contaminated air to maintain a pleasant indoor environment. Such an air purifying filter is essentially installed in an air conditioner for cooling the air introduced from the outside. The air purifying filter installed in the air conditioner is generally referred to as an air conditioner filter.

FIG. 1 is a perspective view showing a state before a conventional air conditioner filter is installed in a blowing duct of an air conditioner, and FIG. 2 is a perspective view showing the combined state of FIG. 1 and 2, a filter insertion unit 2 is formed in a blowing duct 1 of an automobile air conditioner, and an air purification filter F is installed in the filter insertion unit 2.

Generally, the air cleaning filter F includes a support frame F1 and a filtration member F2 formed on the support frame F1. The support frame F1 is mounted to the filter insert 2, which supports the filter element F2. The filtration member F2 purifies (filters) the air introduced from the outside, and mainly uses a fibrous sheet such as a nonwoven fabric by bending it in a corrugated shape. After the air purifying filter F is installed in the filter insertion portion 2, the filter cover 3 is engaged to prevent the air purifying filter F from being separated. For example, Korean Patent Laid-Open Publication No. 10-2011-0052851 discloses a technique related to the above.

In recent years, the air purifying filter F for automobiles has been imparted with other functions in addition to the filter function, to enhance the filter function of the filter element F2 due to an increase in air pollution. In general, functionalities such as antimicrobial activity (disinfecting ability) and deodorizing ability (deodorizing ability) are given. For example, Korean Patent Laid-Open Publication No. 10-2014-0015005 discloses a technique imparting antimicrobial activity. In most cases, such functionalities are promoted by using functional materials such as activated charcoal or charcoal.

However, the prior art including the above-mentioned patent documents has a problem that the functionality obtained through activated charcoal or charcoal is limited to one or two or less, or the functional property by the functional material is low. In addition, when activated carbon or the like is used as the functional material, the cost of the raw material of the functional material itself is high. In addition, it takes a long time to obtain a functional substance, for example, an activation treatment with an acid or a base of activated carbon. As a result, the productivity and economy of the air purifying filter (F) are deteriorated.

Korean Patent Publication No. 10-2011-0052851 Korean Patent Publication No. 10-2014-0015005

Accordingly, the present invention provides a multifunctional air filter for automobiles having various functionalities at the same time by containing (using) specific natural minerals and / or fullerenes separated therefrom as a functional material, and a manufacturing method thereof There is a purpose in providing.

According to one embodiment of the present invention, there is provided a multifunctional air purifying filter for automobiles having excellent far infrared ray activity, antimicrobial activity (disinfecting ability) and deodorizing ability (deodorizing ability) There is a purpose in providing a method.

It is another object of the present invention to provide an automobile including the multifunctional automotive air filter.

According to an aspect of the present invention,

A support frame mounted on a filter insertion portion of an automobile;

A filtration member installed in the support frame for purifying air; And

Provided is an air purification filter for automobiles including multifunctional particles having both far infrared ray activity, antibacterial activity and deodorization ability as three functions.

According to an embodiment of the present invention, an air filter for an automobile includes the multifunctional particle-coated multifunctional layer. According to another embodiment of the present invention, an automotive air filter comprises a multi-functional sheet, the multi-functional sheet comprising a substrate sheet and a multi-functional layer formed on the substrate sheet, And a binder.

According to a preferred embodiment of the present invention, the multifunctional particle may include at least one selected from the group consisting of a grit particle obtained by pulverizing a gut mineral, and a fullerene separated from the gut mineral.

In addition, the present invention provides an automobile including the automotive air filter according to the present invention.

According to the present invention, there is an effect of having various functionalities at the same time, including specific natural minerals and / or fullerenes separated therefrom as a functional material. More specifically, the present invention relates to a fungicide composition which is excellent in both far-infrared radiation activity, antimicrobial activity (fungicidal activity) and deodorizing ability (deodorizing ability), including fungi isolated from a shungite and / Productivity, and economy.

1 is a perspective view showing a state before a conventional air conditioner filter is installed in a blowing duct of an air conditioner.
FIG. 2 is a perspective view showing the combined state of FIG. 1. FIG.
3 is a perspective view of an automotive air filter according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of a main portion of an automotive air filter according to an embodiment of the present invention, taken along line AA of Fig. 3; Fig.
5 is a cross-sectional view showing a main part of an air purifying filter for an automobile according to another embodiment of the present invention.
6 is a cross-sectional view showing an embodiment of a multi-functional sheet according to the present invention.
7 is a configuration diagram showing an apparatus for producing a multi-functional sheet according to the present invention.
8 is a perspective view showing an embodiment of a suction roller constituting the manufacturing apparatus shown in FIG.
9 is a cross-sectional view showing an embodiment of a suction roller constituting the manufacturing apparatus shown in FIG.
10 is a perspective view showing an embodiment of a conveying roller constituting the manufacturing apparatus shown in FIG.
11 is a cross-sectional view showing an embodiment of a conveying roller constituting the manufacturing apparatus shown in FIG.
12 and 13 are photographs showing antimicrobial activity test results of a gilt sheet according to an embodiment of the present invention, and Fig. 12 is a photograph showing the results of an antimicrobial activity test of Staphylococcus aureus ATCC 6538 ), and Figure 13 is the result for Klebsiella pneumoniae ATCC 4352 .
FIG. 14 is a graph showing the deodorization performance test result of a sheet according to an embodiment of the present invention. FIG.
15 and 16 are photographs showing the results of antibacterial activity test of a gilt sheet according to another embodiment of the present invention, and Fig. 15 is a photograph showing the result of the antibacterial activity test of Staphylococcus aureus ATCC 6538 ), and Figure 16 is the result for pneumococci ( Klebsiella pneumoniae ATCC 4352 ).
17 is a graph showing deodorization performance test results of a sheet according to another embodiment of the present invention.
18 is a graph showing mass spectral analysis results of natural fullerenes separated from? -Gut minerals according to an embodiment of the present invention.
19 is a graph showing mass spectral analysis results of artificial fullerene prepared by a conventional artificial synthesis method.

The term "and / or" used in the present invention is used to mean at least one of the constituents listed before and after. The term "one or more" as used in the present invention means one or more than two. The terms "first", "second", "forward", "rearward", "one side" and "other side" used in the present invention are used to distinguish one component from another, And each element is not limited by these terms.

It should be noted that the terms "forming on top of ", " forming on top," But does not mean only that the layers are formed directly in contact with each other, but includes the meaning that other components are formed between the components. For example, "formed on" and "mounted on" means not only that the second component is formed directly in contact with the first component, And includes a meaning that a third component can be further formed (installed) between the elements.

The present invention provides a multifunctional air purifying filter for automobiles according to the first aspect. The air purifying filter for vehicles according to the present invention has at least far-infrared radiation activity, antibacterial activity (= sterilizing ability) and deodorization ability (= deodorization ability) including multifunctional particles and / or multifunctional sheet according to the present invention. According to a second aspect of the present invention, there is provided a multi-functional sheet constituting the automotive air filter. According to a third aspect of the present invention, there is provided a method for manufacturing a multi-functional sheet constituting the automotive air filter. According to a fourth aspect of the present invention, there is provided an apparatus for manufacturing a multifunctional sheet constituting the automotive air filter. According to a fifth aspect of the present invention, there is provided an automobile including the automotive air filter.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings illustrate exemplary embodiments of the invention and are provided to aid in the understanding of the invention only. In describing the embodiments of the present invention, detailed description of known general functions and / or configurations will be omitted.

The air purifying filter for automobile according to the present invention (hereinafter referred to as "air purifying filter") is used for purifying the air introduced from the outside or purifying the indoor air inside the automobile. Specifically, the air purifying filter according to the present invention is installed in an air conditioner of an automobile which cools the air introduced from the outside to supply it to the room, or installed in an automobile room air purifying device for purifying the room air by sucking the room air inside the automobile .

FIG. 3 is a perspective view of the air purifying filter 100 according to the embodiment of the present invention. FIG. 4 is a cross-sectional view of the main part of the air purifying filter 100 according to the embodiment of the present invention, . 5 is a sectional view showing the main part of the air purifying filter 100 according to another embodiment of the present invention and FIG. 6 shows an embodiment of the multi-functional sheet 60 constituting the air purifying filter 100 according to the present invention Sectional view.

3 to 5, the air purifying filter 100 according to the present invention includes a support frame 10 and a filtration member 20 installed in the support frame 10 as usual.

The support frame 10 may be of any type as long as it is capable of forming the skeleton of the air purifying filter 100 while supporting the filtration member 20 as usual. The support frame 10 may be made of plastic material and / or metal material. Further, the support frame 10 may have the shape of a saw frame, for example, as shown in Fig. The support frame 10 is mounted to the filter insertion portion of the automobile. The support frame 10 is inserted and mounted in the filter insertion portion 2 (Fig. 1) formed in the blowing duct 1 of the automobile air conditioner, for example.

The filter member 20 purifies the air and is not particularly limited as long as it can purify the air introduced from the outside of the automobile or purify the air in the automobile interior. The filtration member 20 can be fixed (mounted) in the support frame 10 through an adhesive or a separate fastening structure or the like. The filtration member 20 can be configured as usual, which has at least a filter action (air purifying function), in addition to having an antibacterial action and / or a deodorizing action.

The filtration member 20 can be selected from, for example, a nonwoven fabric or a fabric, as usual. The filtration member 20 may comprise a fibrous sheet (for example, a nonwoven fabric) composed of fibers selected from cotton, polyester, polyethylene and / or polypropylene, for example. The filtration member 20 may be bent (folded) in a wrinkled shape as shown in Fig.

Further, the filter member 20 may have a single layer or a plurality of layers of two or more layers. 5, the filtration member 20 may have a multilayer structure, for example, a first filtration layer 21, a second filtration layer 22, and a third filtration layer 23. At this time, the first filtration layer 21 and the second filtration layer 22 may be formed of a fibrous sheet such as a nonwoven fabric, and the third filtration layer 23 may be formed of an activated carbon layer. The third filtration layer 23 may be formed between the first filtration layer 21 and the second filtration layer 22. The filtration member 20 may have a mesh structure for supporting the first filtration layer 21, the second filtration layer 22 and / or the third filtration layer 23 And the like).

The air purifying filter 100 according to the present invention includes the support frame 10 and the filtration member 20 as described above and additionally includes the multifunctional particles 65 according to the present invention. In the present invention, "multi-functional" means far-infrared radiation activity, antibacterial activity (= sterilizing ability) and deodorization ability (= deodorization ability) as at least three functions. In the present invention, the multifunctional particles 65 are not particularly limited as long as they have all three functions as described above. The multifunctional particles 65 may be included in the air filter 100 according to the present invention in various ways. The multifunctional particles 65 may be dispersed (mixed) in the constituent elements of the air purifying filter 100 or may be contained in a coated form. In another example, the multifunctional particles 65 may be included in the air cleaning filter 100 according to the present invention in the form of a separate sheet 60.

The multifunctional particles 65 may be dispersed in the constituent elements of the air purifying filter 100, for example, the filter member 20, according to the first embodiment of the present invention. For example, the multifunctional particles 65 may be mixed and dispersed in the fibers constituting the filtration member 20. More specifically, for example, a nonwoven fabric sheet produced by web-working a fiber strand may be used for the first filtration layer 21 and the second filtration layer 22 constituting the filtration member 20, In the processing of the nonwoven fabric sheet, the multifunctional particles 65 may be mixed and dispersed together with the fiber strands.

The multifunctional particles 65 may be provided in accordance with the second embodiment of the present invention such that at least one or more of the components constituting the air purifying filter 100 such as the support frame 10 and the filtration member 20 May be included in the form of a coating layer 62 coated on the surface. For example, as shown in FIGS. 3 and 4, the multifunctional layer 62 coated with the multi-functional particles 65 may be formed on the surface of the filter member 20. In addition, the multifunctional layer 62 may be interposed inside the filtration member 20. 5, the filtration member 20 includes a first filtration layer 21, a second filtration layer 22, and a third filtration layer 23 as a multi-layer structure, The multi-function layer 62 may be formed between the first filter layer 21 and the third filter layer 23.

The multifunctional particles 65 may be included in the air purifying filter 100 in the form of a separate sheet 60 (see FIG. 6), according to a third embodiment of the present invention. Specifically, the air purifying filter 100 according to the present invention may include a multi-functional sheet 60. At this time, the multi-functional sheet 60 includes the multi-functional particles 65. The multifunctional sheet 60 may be formed, for example, by molding the multifunctional particles 65 into a sheet form or by coating the multifunctional particles 65 on the base sheet 61 as shown in FIG. 6 .

The multi-functional sheet 60 can be attached to the surface (upper surface and / or lower surface) of the filtration member 20. In the present invention, the attachment is effected by the multifunctional sheet 60 and the filtration member 10 being joined together in a totally intimate manner by means of bonding means such as solid adhesive, liquid adhesive, sewing, heat or ultrasonic, Lt; / RTI >

Fig. 6 shows an embodiment of the multi-functional sheet 60. Fig. The multi-functional sheet 60 includes a substrate sheet 61 and a multi-functional layer 62 formed on the substrate sheet 61. The multifunctional layer (62) is at least one layer. Specifically, the multi-functional sheet 60 includes a substrate sheet 61 and at least one multifunctional layer 62 formed on one or both surfaces of the substrate sheet 61. At this time, the multifunctional layer (62) comprises at least the multifunctional particles (65).

The multifunctional particles 65 may be attached to the base sheet 61 through thermal fusion according to one embodiment. Specifically, for example, heat is applied to the multifunctional particles 65 or heat is applied to the surface of the substrate sheet 61, and then the multifunctional particles 65 are applied and pressed onto the surface of the substrate sheet 61, The multifunctional particles 65 can be attached through surface fusing of the sheet 61. [ Further, the multifunctional particles 65 may be attached to the base material sheet 61 through a binder according to another embodiment. For example, the multifunctional layer 62 may include multifunctional particles 65 and a binder for adhering the multifunctional particles 65 onto the base sheet 61. In addition, the multi-functional layer 62 may further include additives as needed.

Meanwhile, the automobile according to the present invention may include the air purifying filter 100 as described above. The automobile according to the present invention includes the filter insertion portion 2 formed in the air blowing duct 1 of the air conditioner and the air purifying filter 100 as described above may be installed in the filter inserting portion 2. [

Further, the multi-functional sheet 60 can be manufactured through a manufacturing method and a manufacturing apparatus described below. The method for producing the multifunctional sheet 60 according to the present invention comprises the steps of [1] obtaining the multifunctional particles 65 (first step), [2] preparing the multifunctional particles (65) And a step (3) of applying the multifunctional particle mixture onto the base material sheet 61 to form the multifunctional layer 62 (the third step). Hereinafter, embodiments of the multifunctional particles (65) will be described together with the embodiments of the respective steps for producing the multifunctional sheet (60).

[1] Preparation of Multifunctional Particle 65 (First Step)

As mentioned above, in the present invention, the multi-functional particle 65 is selected from having at least three functions. Specifically, the multifunctional particles 65 are selected from particles having three functions of far-infrared radiation activity, antibacterial activity (= sterilizing ability) and deodorization ability (= deodorization ability).

According to one embodiment, the multifunctional particles 65 are at least one selected from multifunctional natural mineral particles having the above three functions simultaneously, and fullerenes separated from the multifunctional natural mineral. According to a preferred embodiment, the multifunctional particles 65 are prepared from fullerenes on particles separated from (a) fine particles obtained by pulverizing fine particles as natural minerals and (b) fullerene minerals One or more selected. Multifunctional particles 65 are in the form of particles (powders), the size of which is not limited. As a specific example, the multifunctional particles 65 are selected from (a) grit particles and (b) fullerene particles described below.

(a)

Ghid minerals as natural minerals are mainly composed of silicon (silicon compounds) such as silicates, which contain a large amount of carbon components compared to other natural minerals. Almost all of the carbon components contained in the gut minerals are fullerenes. Specifically, the gut mineral contains about 40% by weight or more of silicon, more than about 25% by weight of carbon, and more specifically about 25 to 50% by weight of carbon. And most of the carbon components are fullerene.

The carbon component (fullerene or the like) contained in the above-mentioned gut mineral has a matrix form of a porous sponge structure, a porous cell is filled with silicon-containing mineral particles (silicate or the like) The main component of the particles is a silicate such as silicon dioxide (SiO ₂ ). Most of the silica-rich mineral particles have a particle size distribution of about 0.1 to 5 μm particle size, which also forms a continuous frame within the carbon matrix. Such gut minerals can be obtained from, for example, Russia, and, for example, Russian acid extracted from mines such as the Kareliya region of Russia can be used.

According to the present invention, the above-mentioned gut minerals as specific natural minerals have far-infrared radiation activity, antimicrobial activity and deodorization ability at the same time, and their functions (effects) are superior to general natural minerals (for example, germanium or loess) . In addition to the above functions, it has various physical and chemical functions.

Fullerene is a carbon isomer, such as graphite or diamond. However, because fullerene differs in structural form from graphite or diamond, it is usually referred to as the third carbon isomer. Fullerene has carbon rings in which carbon (C) atoms are arranged in a pentagonal or hexagonal shape. Further, in the fullerene, the carbon rings are bonded in a substantially spherical shape, and the inside thereof forms a hollow. That is, in the structural form thereof, the fullerene has a shape of a soccer ball, a shape similar to a soccer ball-like shape, and the inside has a peculiar structure as a hollow shape. Fullerene has excellent multi-functionality due to the above-mentioned carbon ring arrangement and specific structure of the hollow. Specifically, fullerene has far infrared radiation activity, antimicrobial activity and deodorization ability, and their performance is also excellent. In addition, fullerene has various useful physical and chemical properties such as having higher strength than diamond in addition to the above functions.

Generally, fullerene is synthesized and produced artificially by arc discharge method or continuous combustion method, using carbon black or graphite as a raw material in the industry. Artificially synthesized artificial fullerenes have a carbon number of about C ₆₀ to C ₈₀ . However, such an artificial synthesis method has a very high price of fullerene and low productivity due to the cost of raw materials such as carbon black and complicated production processes. As a result, artificially synthesized artificial fullerenes are too expensive to be applied to the air purifying filter 100, thereby increasing the price of the artificial fullerene. That is, since the production unit price is not suitable for application to the air purifying filter 100 of an automobile, it is difficult to put it into practical use.

However, according to the present invention, when the? -Gut mineral is used as the natural mineral, the? -Gut mineral contains a large amount of natural fullerene, and the multifunctional property that can be obtained from the fullerene, can do. The gut minerals are mainly composed of siliceous matter, but they contain a large amount of multifunctional fullerene as above. In addition,? Gide minerals contain various minerals, though they are trace amounts. Gad minerals contain minerals such as Ca, K, Na, Mg and Fe. As a result, the gut minerals have superior far-infrared radiation activity and deodorization ability due to various kinds of minerals as described above.

In the present invention, the fullerene contained in the above-mentioned gut minerals has a carbon ring in which carbon (C) atoms are arranged in a pentagonal or hexagonal shape and these carbon rings are bonded in a spherical shape such as a soccer ball, It is sufficient if it forms a hollow, and its carbon number is not limited. That is, the fullerene includes fullerene-like having a carbon number smaller than or greater than that of fullerene having a carbon number of C ₆₀ to C ₈₀ . Here, the like fullerene means that the number of carbon atoms is smaller or larger than that of artificially synthesized fullerene (for example, fullerene having a carbon number of C ₆₀ to C ₈₀ ) And the inside is hollow if it is good.

In the present invention, the gut mineral may include, for example, fullerene having a carbon number of C ₂₀ to C ₅₀₀ , but is not limited thereto. The gad minerals may include fullerenes having a carbon number of C ₂₀ to C ₃₀₀ , and more specifically fullerene having a carbon number of C ₂₀ to C ₁₅₀ . Further, the fullerene may have various shapes such as a soccer ball, a rugby ball, or a spherical shape, or a polyhedron, etc., in the structure thereof, having a hollow structure.

According to the first embodiment of the present invention, the above-mentioned fine-grained particles are pulverized and used as multifunctional particles 65 having a predetermined size. By such grinding, the? Gist particle can have a size of, for example, 500 占 퐉 or less. The grit particles may have an average particle size of, for example, from 0.05 to 300 탆. At this time, if the particle size of the particles is too small, for example, handling may be difficult. If the size of the grit particles is too large, the compatibility with the binder, the adhesiveness and / or the coating property (coating property) may be somewhat lowered.

Considering this point, the grit particles may have an average particle size of, for example, 0.2 to 150 탆, 0.2 to 100 탆, 0.5 to 100 탆, 0.2 to 50 탆, or 0.5 to 100 탆, A specific example may have an average particle size of from 2 to 50 mu m. When the particle size is within this range, for example, the handling property is good, the ability to be mixed with the binder, the adhesion property and / or the coating property (coating property) are excellent and the specific surface area is advantageous even in multi- have. However, in the present invention, the size of the particles is not limited to the above range.

The method of pulverizing the above-mentioned gut mineral is not limited. The pulverization method can be selected from a variety of methods commonly used in the field of powder technology. The pulverization may be carried out, for example, using a ball mill, a roll mill, an attrition mill, a jet mill, a rotary mill, and / or a vibration mill ), But the present invention is not limited thereto.

Further, according to an exemplary embodiment of the present invention, the pulverized? Grit particles can be selected. That is, the first step may further include a sorting step of sorting the crushed gut minerals having an appropriate size range, at least including a crushing step of crushing the gut minerals. At this time, the pulverized? -Gut minerals can be selected to have an appropriate particle size distribution through a sorting process such as sieving, for example. The grit minerals have an average particle size of 0.05 to 300 탆, 0.2 to 150 탆, 0.2 to 100 탆, 0.5 to 100 탆, 0.2 to 50 탆, or 2 to 50 탆 after crushing Can be used selectively.

(b) fullerene particles

In the present invention, fullerene is separated from natural minerals. The function and structure of the fullerene are as described above. According to a specific embodiment, the fullerene particles comprise a first step of crushing natural minerals containing fullerene; A second step of extracting and separating fullerene from the crushed natural minerals; And a third step of heat-treating the separated fullerene. The manufacturing process of the fullerene will be described below.

<Crushing of natural minerals (1st step)>

First, the natural minerals are crushed. Natural minerals are not particularly limited as long as they contain fullerene. Natural minerals can be selected from various minerals (gemstones) existing in nature if they contain fullerene, and the kind thereof is not limited. The natural minerals are preferably selected from the gut minerals as described above. The milling method and the particle size of the natural minerals (the gut minerals) are as described above.

&Lt; Extraction and Separation of Fullerene (Second Step) >

Fullerene is extracted and separated from the crushed natural minerals. This second step includes an extraction process and a separation process. That is, the second step includes an extraction step of extracting the fullerene contained in the crushed natural minerals and a separation step of separating and recovering the extracted fullerenes.

The extraction process is not particularly limited as long as it is a process capable of extracting fullerene contained in natural minerals. The extraction process preferably includes an alkaline solution extraction process using an alkali solution. Specifically, the extraction step preferably includes a step of mixing and heating the pulverized natural mineral and the alkali solution. At this time, the alkali solution extraction step may be carried out using a heating stirrer while heating and stirring a mixture of a natural mineral and an alkali solution, or by using a high-temperature extruder such as an autoclave. By such heat extraction, fullerene contained in natural minerals is extracted. Namely, natural minerals are separated into at least fullerene and inorganic matter by heating extraction using an alkali solution. When natural minerals such as? Gut minerals are used, the? Gut minerals are separated into carbon components (fullerene) and silicate (alkali silicate) by an alkali solution. More specifically, the silicon compound (silicate or the like) which is the main component of the gut mineral is dissolved in the alkali solution, and the carbon component (fullerene) remains in the solid phase.

The heating temperature in the above-mentioned extraction step is not limited as far as the temperature at which fullerene can be extracted from natural minerals. Upon extraction, the heating temperature may be, for example, 100 to 300 占 폚. The heating time is not particularly limited, but may be, for example, a time until the liquid component (water or the like contained in the alkali solution) is almost volatilized and almost all of it becomes a solid component. More specifically, in the case of using a heating stirrer, the reaction can be carried out by heating and stirring at a temperature of 100 to 130 ° C for 5 to 25 hours. When a high-temperature extruder such as an autoclave is used, it may be heated at a temperature of 200 to 250 ° C for 2 to 4 hours to proceed. When proceeding to such a temperature and time range, it is advantageous in the extraction ratio of the fullerene and the energy efficiency.

In the extraction step, the mixing ratio of the natural mineral and the alkali solution may be, for example, 1: 0.2 to 30 by weight. That is, the weight ratio of natural mineral: alkali solution = 1: 0.2 to 30 can be obtained. At this time, if the amount of the alkali solution used is too small, the extraction rate of fullerene may be lowered, and if too large, the synergistic effect of excessive use may be insufficient. Considering this point, the natural mineral and the alkali solution can be combined by heating at a weight ratio of 1: 1 to 20, more specifically 1: 8 to 20, and the mixture can be heated and extracted. In another specific example, when the mixture is heated to a temperature and a time range as described above using a heating stirrer, the mixture may be heated and extracted at a weight ratio of 1: 1 to 5, and may be heated and extracted using a high-temperature extruder such as an autoclave When the reaction proceeds in the temperature and time ranges as described above, the reaction mixture may be heated and extracted in a weight ratio of 1: 1 to 10.

The alkali solution is not limited as long as it is a solution containing an alkali substance, for example, it can be selected from 20 to 60 weight% of an aqueous alkali solution containing, for example, 20 to 60% by weight of an alkali substance in the total weight of the solution. At this time, the concentration of the alkali solution and the kind of the alkaline substance can be determined according to the kind of the inorganic substance or the impurity constituting the natural mineral, and the amount thereof.

The alkali substance constituting the alkali solution has a molecular formula of, for example, M _a (OH) _b , wherein M can be selected from metal elements. The M may be at least one selected from K, Li, Na and Ca, for example, and a and b are according to stoichiometry. The alkali substance may be at least one selected from among KOH, LiOH, NaOH and Ca (OH) ₂ , and it is preferable to use KOH or LiOH or a mixture of KOH and LiOH. The KOH and LiOH have high extraction ratios of fullerene to fullerene and are useful in the present invention. In other words, KOH and LiOH can effectively dissolve the silicon compound (silicate, etc.), which is the main component of the gut minerals, and increase the extraction rate of fullerene. When a mixture of KOH and LiOH is used as the alkali substance, they may be mixed in a weight ratio of 1: 1 to 10. That is, they can be mixed and used in a weight ratio of KOH: LiOH = 1: 1 to 10. In this case, the extraction efficiency of fullerene is very effective.

The separation step may take various methods as long as it can separate the solid carbon component (fullerene) extracted through the extraction process from the solution. The separation process may be performed by, for example, filtration through a filter or high-speed separation using a centrifugal separator. Through this separation, a carbon concentrate is obtained from the extract. That is, a carbon concentrate containing a high concentration of carbon components (fullerene and other carbon water) is obtained. And these carbon concentrates may contain minor amounts of ash components. In the present invention, the ash component means a component other than the carbon component (fullerene and other carbon water), which is contained in natural minerals, and includes, for example, a salt component such as Al, Fe, Ca, Sulfur (S) and the like.

Further, according to an exemplary embodiment of the present invention, the extraction step may be carried out by further adding a pore enhancer. That is, the extraction process proceeds by heating the mixed solution obtained by mixing the crushed natural mineral and the alkali solution as described above, and the mixed solution may be heated after the addition of the pore enhancer. At this time, the pore enhancer may be added to, for example, an alkali solution or may be separately added and mixed at the time of heating.

In the present invention, the pore enhancer is not particularly limited as long as it can improve the pore structure of fullerene, that is, the coplanarity of fullerene. The pore enhancer is removed by a heat treatment (the third step) and / or an acid treatment described below to improve the pore structure of the fullerene. Such a pore enhancer may be one which can improve the pore structure of fullerene (formation of pores), and it may use at least one selected from a metal component, a boron component and a compound thereof (oxide, etc.). The metal component may be, for example, cobalt (Co), magnesium (Mg), nickel (Ni), copper (Cu), zinc (Zn), silicon (Si) and / . At this time, the metal component may be removed by, for example, an acid treatment to form pores, and the boron component may be removed by heat treatment to form pores.

The pore structure (porosity) of the fullerene can be further improved by the above-described pore enhancer. Specifically, in addition to the pore formed by the removal of the silicate by the alkali extraction, the fullerene has a secondary pore structure formed by the removal of the pore-forming agent and is well developed Pore structure (pore structure). Accordingly, the deodorization ratio can be further improved by the well-developed pore structure (coarse) of fullerene.

According to a preferred embodiment, the pore enhancer preferably comprises a boron component. The boron component is very effective for improving the pore structure of fullerene. In the present invention, as the boron component, at least one selected from boron (B) and boron (B) -containing compounds can be used. That is, the boron component is boron (B); A boron-containing compound having at least one boron (B) element in the molecule; And mixtures thereof.

The boron-containing compound is not limited as long as it has at least one boron (B) in the molecule, and can be selected from, for example, a boron-based compound. Specific examples of the boron-containing compound include H ₃ BO ₃ , B ₂ H ₆ , B ₄ H ₁₀ , B ₅ H ₉ , B ₆ H ₁₀ , BI ₃ , NaBO ₂ , NaBH ₄ , Na ₂ B ₄ O ₇ And hydrates thereof, and the like. Specifically, the hydrate may be NaBO ₄ H ₂ O (meta-borate hydrate), NaBH ₄揃 4H ₂ O (boro-hydrate), or Na ₂ B ₄ O ₇揃 10H ₂ O (borax, tetra-borate hydrate) For example.

The pore enhancer (e.g., boron component) is not particularly limited, but may be used in an amount of 0.01 to 20 parts by weight based on 100 parts by weight of the ground natural mineral. At this time, if the amount of the pore enhancer used is less than 0.01 part by weight, the effect of improving the pore structure may be insignificant. When the amount of the pore enhancer used is more than 20 parts by weight, the synergistic effect with excess use is not so large or the mechanical strength of fullerene may be adversely affected. In consideration of this point, the pore enhancer is preferably used in an amount of 0.04 to 10 parts by weight based on 100 parts by weight of the ground natural mineral.

On the other hand, the carbonaceous concentrate in which the separated fraction (carbon concentrate), that is, the carbon component (fullerene) is contained at a high concentration, can be washed, acid treated and / or dried. Specifically, the second step includes an extraction process and a separation process, and may further include at least one process selected from a cleaning process, an acid treatment process and a drying process, as the case may be.

The washing process may be carried out using water (distilled water, purified water and / or deionized water), preferably warmed water, for example, warmed water at 40 ° C or higher, more specifically at 40 to 90 ° C The separated separated product (carbon component) may be added to water, followed by washing with water.

In addition, the acid treatment may be carried out by using an acid solution, and impregnating the separated separated product (carbon concentrate) with an acid solution. At this time, the acid solution may be an aqueous solution containing 10 to 80% by weight of an acid material, for example. The acid solution may contain, for example, at least one acid selected from the group consisting of nitric acid, hydrofluoric acid, sulfuric acid and hydrochloric acid. According to an exemplary embodiment, the acid solution may use at least one selected from a 10 to 60 wt.% Aqueous nitric acid solution and a 10 to 60 wt.% Aqueous hydrofluoric acid solution.

In addition, the acid solution may be used in a weight ratio of 8 to 20 to the separated product (carbon concentrate). That is, the acid treatment can be carried out by mixing at a weight ratio of the separated separated material (carbon concentrate): acid solution = 1: 8-20. In this acid treatment process, it is preferable that the heating proceeds. That is, the separated separated product and the acid solution can be put into a container, and the reaction can proceed with heating. In this case, the heating temperature may be, for example, 40 DEG C or more, more specifically, 40 to 90 DEG C. [

The washing process and the acid treatment process can be continuously performed. After the washing process with water, the water (washing water) is removed by filtration, and the acid treatment process can be performed. By one or more of these washing and acid treatment processes, the separated separates may be, for example, at a pH of 7 to 8. Further, impurities present in the separated separated product can be removed by the washing process and / or the acid treatment process. At this time, when proceeding through the washing step and the acid treatment step, as described above, when proceeding through warmed water (washing step) or heated acid solution (acid treatment step), impurities and the like can be removed more effectively .

The drying step may be carried out by, for example, hot air drying, natural drying, and / or heating and drying through a drying furnace. The temperature at the time of drying is not limited. The drying temperature may be, for example, 60 占 폚 or higher, specifically 60-300 占 폚, for example. Considering the time, the drying temperature can be, for example, 240 to 300 DEG C using a drying furnace. By such drying, a carbon component in powder form can be obtained. At this time, the carbon component obtained by drying contains a high content of fullerene in powder form.

Further, according to an exemplary embodiment of the present invention, the acid treatment process may proceed even before the extraction process. Specifically, the second step comprises, in accordance with an exemplary embodiment, a first primary acid treatment step of first treating the ground natural minerals; An alkaline solution extracting step of extracting carbon components from the acid-treated natural mineral using an alkaline solution; A separation step of separating the extracted carbon components; And a second acid treatment step of subjecting the separated carbon component to a second acid treatment. At this time, at least one washing step may be performed between the separation step and the second acid treatment step. After the second acid treatment process, the drying process may proceed. In addition, for example, a hydrofluoric acid solution may be used in the first acid treatment step, and in the second acid treatment step, for example, a nitric acid solution may be used.

&Lt; Heat treatment (third step) >

Through the above process, the carbon component (fullerene) is extracted and separated from natural minerals, followed by heat treatment. The heat treatment can preferably proceed in the presence of a pore enhancer. The pore enhancer may be used in at least one step selected from the second step and the third step. That is, as mentioned above, the pore enhancer may be added to the mixed solution in which the natural mineral and the alkali solution are mixed in the second step, or may be used in the third step.

When the pore enhancer is used in the third step, the pore enhancer is used before the heat treatment. To this end, the third step is a mixing step of mixing the carbon component separated in the second step and a counter electrode enhancer; And a heat treatment process for heat-treating the mixed mixture. The pore enhancer is as described in the second step. That is, the pore enhancer may use at least one selected from the group consisting of a metal component, a boron component, and a compound thereof, and the specific types thereof are as described above. In this case, the pore enhancer is not particularly limited, but may be used in an amount of, for example, 0.01 to 10 parts by weight based on 100 parts by weight of the separated carbon components.

According to the third step, after the separated carbon component (fullerene) is mixed with the pore enhancer, heat treatment is performed at a high temperature. By such a high-temperature heat treatment, the ash component remaining in the carbon concentrate containing the separated carbon component, that is, the fullerene in a high content is removed. Further, by the heat treatment, the pore enhancer is exhausted and the pore structure of the fullerene is improved to the utmost. That is, through the high-temperature heat treatment, the pore structure of the fullerene is removed with high purity by removing the ash component, and the pore structure (porosity) is maximized by the removal of the pore enhancer. As a result, fullerene has high porosity and high purity, effectively improving deodorizing ability and the like, and has excellent physical and chemical properties.

The heat treatment temperature is not limited as long as it can remove the ash component (and the pore enhancer). The heat treatment temperature may vary depending on the kind of the natural mineral (and the pore enhancer), but may be 850 ° C to 3,500 ° C, for example. At this time, when the heat treatment temperature is too low as less than 850 ° C, effective removal of the ash component (and the pore enhancer) may be difficult. When the heat treatment temperature is too high to exceed 3,500 占 폚, the porous three-dimensional structure (such as a soccer ball shape) of the fullerene may be destroyed, and the fullerene may be transformed into a black matrix system of a plate-like structure. Considering this point, the heat treatment temperature is preferably 1,200 ° C or higher, preferably 1,500 ° C or higher. More specifically, for example, the heat treatment is preferably carried out at 1,500 ° C to 3,500 ° C or at 2,800 ° C to 3,200 ° C. In addition, this heat treatment may be conducted in an inert atmosphere such as, for example, N ₂ , Ar and / or He gas, but is not limited thereto. The heat treatment time may vary depending on the heat treatment temperature, but can be, for example, 10 minutes to 72 hours.

Further, according to an exemplary embodiment of the present invention, after the above-described heat treatment is performed, the grinding process can be further performed. That is, the third step includes at least a heat treatment step, and may optionally further include a grinding step. At this time, the pulverizing process can proceed to have a particle size of, for example, 20 mu m or less. As a specific example, the fullerene particles may have an average particle size of from 1 nm to 10 [mu] m, more specifically from 1 nm to 3 [mu] m through a grinding process. The pulverizing method of fullerene is not limited. The pulverization can be carried out by using a vibrating mill or an ultra-high-speed pulverizer, for example, which can be made into fine particles.

According to the above-described production of fullerene, fullerene can be extracted (extracted) from natural minerals (e.g., gut minerals) and has a high purity with a high extraction ratio and few impurities such as ash components. In addition, the pore structure is maximized and the physical and chemical properties are excellent. More specifically, the fullerene prepared as described above has a high purity, for example, 1 wt% or less of ash component. Specifically, the ash component has a purity of from 0 (zero) to 0.5% by weight, more specifically from 0 (zero) to 0.1% by weight and contains almost no ash component. Also, the porosity (porosity) has a porosity of 50% or more, more specifically 50% to 85%. Preferably, it has a high porosity of 70% or more. Accordingly, the fullerene has excellent far infrared radiation activity, antibacterial activity and deodorizing ability as three functions by its physical and chemical properties, and has excellent deodorizing ability due to a well-developed pore structure.

In the present invention, the porosity may mean the ratio (%) of the volume occupied by the pores in the total volume of the fullerene. Specifically, when the total volume of the fullerene is V and the total volume of the pores is Vp, (%) = (Vp / V) x 100. &Lt; tb &gt; &lt; TABLE &gt; Such porosity can be measured, for example, by measuring the volume of the fullerene and the volume of the pores, or by using the area of the fullerene and the area of the pores measured through a scanning electron microscope (SEM) image or a transmission electron microscope (TEM) Can be evaluated.

Further, according to the present invention, it is possible to produce fullerene having high productivity and economy. In other words, compared to an artificial synthesis method of synthesizing through arc discharge by using a graphite system or the like as a raw material, it is possible to use low-cost natural minerals as raw materials and to use such natural minerals in a large amount, . In addition, productivity and economical efficiency are improved by simple chemical treatment and heat treatment in terms of cost and process.

In addition, as described above, the fullerene prepared as described above includes common fullerene having a carbon number of C ₆₀ to C ₈₀ as well as pseudo-fullerene having a carbon number smaller than or greater than the carbon number of C ₆₀ to C ₈₀ . That is, the fullerene prepared as described above may include various kinds of fullerene having a carbon number of C ₂₀ to C ₅₀₀ although it may be different depending on the kind of natural minerals. Specifically, a mixture of fullerenes containing fullerenes of various carbon numbers, for example, carbon numbers C ₅₅ , C ₆₀ , C ₇₀ , C ₇₄ , C ₇₆ , C ₇₈ , C ₉₀ , C ₉₃ , C ₉₆ , C ₉₆ , C ₁₁₂ , C ₂₀₀ , and the like. In addition, the monomers may, of course, include multimeric fullerenes. For example, C ₆₀ may include C ₆₀ dimers (C ₆₀ -C ₆₀ ) and multimers ((-C ₆₀ -) n) in which C ₆₀ is a repeating unit.

[2] Mixing (Second Step)

To form the multifunctional layer 62, a multifunctional particle mixture is first obtained which comprises the multifunctional particles 65 and a binder. The multifunctional particle mixture may further comprise a solvent. Specifically, in the second step, a multifunctional particle mixture comprising the multifunctional particles (65), a binder and a solvent can be obtained.

In the present invention, the binder is not particularly limited as long as it has adhesiveness. The binder may be any material capable of bonding the multi-functional particles 65 on the substrate sheet 61 while aggregating the multifunctional particles 65 with each other. The binder may be selected from synthetic resins and / or natural resins having adhesiveness. In addition, the binder may be selected from harmless and environmentally friendly.

The binder may be solid and / or liquid, and may also be selected, for example, from thermosetting, light curing (ultraviolet light, etc.) and / or natural curing (drying) The binder may be selected from, for example, one or more polymers selected from acrylic, vinyl, epoxy, urethane, silicone, olefin, ester and rubber, and / or copolymers thereof. Specific examples of the binder include an acrylic polymer, an acrylic copolymer, a vinyl acetate polymer, a vinyl acetate / ethylene copolymer, a polyvinyl alcohol, an epoxy resin, a urethane resin, a polysiloxane, a silicone (siloxane) But are not limited to, copolymers, ethylene polymers, propylene polymers, ethylene / propylene copolymers, polyesters and / or acrylic rubbers. The silicone (siloxane) copolymer may be an epoxy / silicone copolymer, an acrylic / silicone copolymer, an amine / silicone copolymer, and the like. Copolymers and / or urethane / silicone copolymers.

According to an exemplary embodiment of the present invention, the binder may include a butadiene-styrene-alkyl methacrylate copolymer. According to a specific embodiment, the binder comprises a mixture of one or more binders selected from the listed binders (first binder) and the butadiene-styrene-alkyl methacrylate copolymer (second binder), or the butadiene- Styrene-alkyl methacrylate copolymer (second binder) alone.

According to one embodiment, the binder comprises a first binder and a second binder, wherein the first binder is selected from acrylic polymers, acrylic copolymers, vinyl acetate polymers, vinyl acetate / ethylene copolymers and silicone copolymers, etc. And the second binder may be selected from butadiene-styrene-alkyl methacrylate copolymers. In this case, the binder may be a mixture of 100 parts by weight of the first binder and 5 to 60 parts by weight of a second binder (butadiene-styrene-alkyl methacrylate copolymer). The butadiene- When the amount of the methacrylate copolymer (second binder) is less than 5 parts by weight, the improvement effect (adhesion, etc.) of the butadiene-styrene-alkyl methacrylate copolymer may be insignificant. If the amount of the methacrylate copolymer (second binder) is more than 60 parts by weight, it may not be preferable from the viewpoint of cost.

The butadiene-styrene-alkyl methacrylate copolymer (second binder) is a ternary copolymer of butadiene, styrene, and alkyl methacrylate. The butadiene-styrene-alkyl methacrylate copolymer includes, for example, 30 to 45% by weight of a butadiene- 5 to 10% by weight of an alkyl methacrylate monomer and 40 to 60% by weight of an alkyl methacrylate monomer may be used. At this time, the alkyl methacrylate monomer may be selected from, for example, methyl methacrylate, ethyl methacrylate and / or n-butyl methacrylate.

Specific examples of the butadiene-styrene-alkyl methacrylate copolymer (second binder) include butadiene-styrene-methyl methacrylate copolymer, butadiene-styrene-ethyl methacrylate copolymer and / or butadiene- Butyl methacrylate copolymer, and the like.

According to the present invention, the butadiene-styrene-alkyl methacrylate copolymer (second binder) is more advantageous than the conventional binders (the first binder) in joining forces between the multi-functional particles 65, The interfacial adhesion between the multi-functional layer 61 and the multi-functional layer 62 can be effectively improved, and the durability (weather resistance) and the like of the multi-functional layer 62 can be improved.

In addition, the butadiene-styrene-alkyl methacrylate copolymer (second binder) may be selected from nano-particles having an average particle size of 50 nm to 500 nm. When the butadiene-styrene-alkyl methacrylate copolymer (second binder) has a nano-size, the multifunctional particles 65 are uniformly dispersed among the particles, so that the adhesive force and the like can be more effectively improved.

In one example, the nanoparticulate butadiene-styrene-alkyl methacrylate copolymer (second binder) is added together with the multifunctional particles 65 to a solution comprising a first binder (acrylic polymer, etc.) Which can be effectively dissolved (melted) by a solvent or heat, and then effectively cohesion (adhesion) between the multi-functional particles 65 can be improved by curing (drying).

As mentioned above, the multifunctional particle mixture includes at least a multifunctional particle 65 and a binder, and may further include a solvent. The solvent can be selectively used for the dispersibility of the multifunctional particles 65, the dispersibility (dilution property) of the binder and / or the coating property (coating property) of the multifunctional particle mixture, And / or a hydrocarbon-based organic solvent. The hydrocarbon-based organic solvent may be selected from aliphatic and / or aromatic hydrocarbon-based compounds, and may be selected from, for example, alcohols, ketones and / or aromatics. Specific examples of the hydrocarbon-based organic solvent may include at least one selected from the group consisting of isobutyl alcohol, methyl ethyl ketone, methyl isobutyl ketone, propylene glycol monomethyl ether acetic acid, toluene and xylene.

In addition, the multifunctional particle mixture may further comprise an additive, and the additive may be selected from, for example, a defoaming agent, a leveling agent, a curing accelerator, an antioxidant, a heat stabilizer and / or a UV stabilizer. Each of these additives is not particularly limited as long as it has the function.

Meanwhile, in the present invention, the multifunctional particle mixture may be prepared in various blending ratios. According to a first embodiment of the present invention, the multifunctional particle mixture may comprise from 15 to 35% by weight of the multifunctional particles (65), from 35 to 60% by weight of the binder and from 10 to 50% by weight of the solvent. By the application of the multifunctional particle mixture, the multifunctional layer 62 can contain the multifunctional particles 65 and the binder in a weight ratio of 15 to 35: 35 to 60. If the content of the multifunctional particles 65 is less than 15% by weight, the multifunctional effect may be insignificant. When the content of the multifunctional particles 65 is more than 35% by weight, the content of the binder may be relatively low and the adhesion may be insignificant. If the content of the binder is less than 35% by weight, the adhesive force may become insignificant. If the content of the binder is more than 60% by weight, the synergistic effect of excessive use may not be large and the content of the multifunctional particles (65) have. In addition, if necessary, the multifunctional particle mixture according to the first embodiment may further include additives as exemplified above. Such additives may be contained in the range of, for example, 0.01 to 10% by weight based on the total weight of the multifunctional particle mixture.

According to a second embodiment of the present invention, the multifunctional particle mixture may comprise 15 to 35% by weight of the multifunctional particles (65) and 65 to 85% by weight of the binder solution based on the total weight of the multifunctional particle mixture. At this time, the binder solution includes at least a binder and a solvent, and may optionally further include additives as illustrated above.

In one example, the binder solution comprises 20 to 50% by weight of the binder and 50 to 80% by weight of the solvent based on the total weight of the binder solution, and optionally the additive is 0.01 to 10% by weight . &Lt; / RTI &gt; At this time, the additive includes a defoaming agent, and the defoaming agent may be contained in an amount of 0.2 to 3% by weight based on the total weight of the binder solution. In one example, the additive may comprise at least poly [oxy (dimethylsilylene)] (Poly [oxy (dimethylsilylene)]. The poly [oxy (dimethylsilylene)] is included in the multifunctional particle mixture to improve the thermal stability and / or the oxidation resistance as well as the bubble resistance, and can be usefully used in the present invention.

According to another exemplary embodiment of the present invention, it is preferable that the multifunctional particle mixture includes multifunctional particles (65) and a binder liquid, wherein the binder liquid has a viscosity of 30 cps to 60 cps. Specifically, according to another exemplary embodiment of the present invention, the multifunctional particle mixture includes multifunctional particles (65), a binder and a solvent, wherein the binder solution in which the binder and the solvent are mixed has a viscosity of 30 cps It is preferable to have a viscosity of 60 cps. More preferably, the binder solution has a viscosity of 35 cps to 50 cps.

Most of the? -Dart particles as the natural minerals have a specific gravity [g / cm3] within a range of about 2.1 to 2.6. The gist particle has a specific gravity [g / cm &lt; 3 &gt;] of about 2.3 to 2.4, more specifically. When the viscosity of the binder liquid is adjusted within the above range, for example, in the binder liquid, the uniform dispersibility of the binder particles can be improved. This is because the multifunctional particles (65) So that the multi-functional property can be improved.

(The mixture of the multifunctional particles 65 and the binder liquid) on the substrate sheet 61 and then considering the curing (drying) time of the binder solution, the specific gravity of the multifunctional particles 65 When the viscosity of the contrast binder liquid is too high, the settling velocity of the multifunctional particles 65 may be lowered, which may make it difficult to achieve good densification of the multifunctional particles 65. That is, the multi-functional particles 65 may be cured (dried) before sinking down.

When the viscosity of the multifunctional particle 65 is too low relative to the specific gravity of the multifunctional particle 65, the initial dispersibility of the multifunctional particle 65 (mixture of the multifunctional particle 65 and the binder liquid) Can fall. Specifically, for example, when the mixture of the multifunctional particles 65 and the binder solution in the mixing vessel is mixed, the multifunctional particles 65 are scattered on the bottom of the mixing vessel due to the low viscosity of the binder solution, . In addition, in this case, it may be difficult to form the multi-functional particle layer 62a having a uniform thickness layer over the entire area of the multi-function layer 62.

Therefore, when the viscosity of the binder solution is adjusted within the range of 30 cps to 60 cps in consideration of the fact that most of the? -Sized particles as the multifunctional particles 65 have a specific gravity [g / cm 3] of about 2.1 to 2.6, Can be settled prior to curing of the binder liquid, so that the multifunctional particles 65 are well densified and together with the multifunctional layer 62 of a uniform thickness layer can be formed. Considering this point, it is preferable that the above-mentioned urethane particles have an average particle size of 0.2 탆 to 50 탆 and have a specific gravity of 2.3 to 2.4, and the binder solution preferably has a viscosity of 35 cps to 50 cps .

In the present invention, the viscosity of the binder liquid is a value measured at room temperature, which may be a value measured at a temperature of, for example, 10 ° C to 35 ° C, more specifically, for example, 15 ° C to 30 ° C. Further, in the present invention, the viscosity of the binder liquid may be controlled by, for example, the type of binder, the type of solvent, and / or the amount of the binder and solvent used (mixing ratio).

[3] Formation of multifunctional layer 62 (third step)

The multifunctional particle mixture as described above is applied on the base sheet 61 to form at least one multifunctional layer 62. This multifunctional layer 62 may be formed on one side or both sides of the substrate sheet 61. In the embodiment shown in Fig. 4, one multi-functional layer 62 is formed on one side (upper side) of the substrate sheet 61 .

The third step includes a coating step of applying the mixture of the multi-functional particles onto the substrate sheet 61 and a curing step (drying step) of curing (drying) the applied multi-functional particle mixture. According to the exemplary embodiment, the third step is performed between the application step and the curing step (drying step), and a suction force is applied from the lower portion of the substrate sheet 61 coated with the multi-functional particle mixture The process may further include a suction process in which the multifunctional particles 65 are adhered (sucked) to the base sheet 61. Specifically, the multifunctional sheet 60 is obtained by applying a multifunctional particle mixture containing a multifunctional particle 65 and a binder onto a base material sheet 61 and then separating the multifunctional particle mixture of the base material sheet 61 Functional particles 65 can be made to adhere to the base sheet 61 as much as possible by applying a suction force on the opposite side of the coated side.

In the present invention, the base material sheet 61 is not particularly limited and may be selected from, for example, gas permeable (breathable). The base material sheet 61 may be selected from a specific material such as a fiber material, a pulp material, a paper material, and / or a synthetic resin material. In one example, the substrate sheet 61 may be selected from a fibrous sheet such as a nonwoven fabric or fabric. Further, the base material sheet 61 may be selected from a synthetic resin material sheet which is gas-permeable and not liquid-based, as the case may be.

In the present invention, the application is not particularly limited as long as it can form the multi-functional layer 20, and it can be selected from a coating method and / or a printing method, for example. For example, the coating may be performed by a dipping coating method, a roll coating method, a spray coating method, a slot die coating method, a comma coating method, A bar coating method, a slit coating method, a curtain coating method, a printing method, a gravure method, a gravure offset method, a micro gravure method, A flexo method, a screen printing method, an ink jet printing method, and the like.

The multifunctional layer 62 may have a thickness of 0.2 m or more. The multifunctional layer 62 may have a thickness of, for example, 0.2 to 10 mm, 2 to 10 mm, 5 to 8 mm, 10 to 5 mm, 20 to 2 mm, or 50 to 500 m, But is not limited to the above range.

According to an exemplary embodiment, in forming the multifunctional layer 62, a manufacturing apparatus as shown in Fig. 7 can be advantageously used. FIG. 7 is for forming the multifunctional layer 62, which specifically illustrates the construction of a production apparatus capable of continuously carrying out roll coating and curing (drying).

7, the manufacturing apparatus includes an unwinding roller 110 for supplying a wound substrate S, a winding roller (not shown) for winding a multi-functional sheet 60 on which a multi-functional layer 62 is formed on a substrate S 120). The manufacturing apparatus includes a roll coater 200 and a coater 300 installed between the unwinding roller 110 and the winding roller 120. The manufacturing apparatus may further include a plurality of guide rollers 131 and 132 for guiding the substrate S and the multi-functional sheet 60.

Here, in Fig. 7, the substrate S is not limited as long as it can provide a coating surface for forming the multi-functional layer 62. [ The base material S may be selected from the base material sheet 61 as described above. The substrate S may also be selected from the constituent elements of the air purifying filter 100 and may be selected, for example, from the filtering member 10 as described above. The substrate S may be selected from a first filtration layer 21 and / or a second filtration layer 22 which constitute the filtration member 10, for example.

The roll coater 200 includes a support 210 for supporting a substrate S, a coating roller 220 on which the support 210 is installed and coating a multi-functional particle mixture on the substrate S, And a material supply portion 230 for supplying a multi-functional particle mixture to the roller 220. [ At this time, the support part 210 may be selected from a table or a belt, and the coating roller 220 may be rotated by driving a motor (not shown) or the like.

According to a preferred embodiment, the roll coater 200 further includes a suction roller 240 and a pressure roller 250 provided at the rear end of the coating roller 220. The suction roller 240 and the pressure roller 250 are spaced apart from each other by a predetermined distance and the suction roller 240 is disposed at a lower portion of the suction roller 240. The pressure roller 250 is disposed above the suction roller 240 at a predetermined interval Respectively. A substrate S coated with the multifunctional layer 62 is passed through the coating roller 220 between the suction roller 240 and the pressure roller 250. At this time, the substrate S is closely adhered to the suction roller 240, and the multi-function layer 62 is closely attached to the pressure roller 250.

The curing unit 300 includes a chamber 310, at least one conveying roller 320 installed in the chamber 310, and at least one curing unit 330 installed on the conveying roller 320. At this time, the number of the conveying rollers 320 may be plural, and the substrate S is closely attached to the conveying rollers 320. The multi-functional layer 62 coated on the substrate S is cured (dried) by the curing means 330 provided on the conveying roller 320.

The curing means 330 is not particularly limited as long as it can cure (dry) the multi-function layer 62. That is, the curing unit 330 is not particularly limited as long as it can cure (dry) the multifunctional particle mixture to fix the multifunctional layer 62. The curing unit 330 may include a plurality of curing units 330, and may include at least one selected from a heater, an infrared (IR) irradiator, and an ultraviolet (UV) irradiator, for example. This curing means 330 can be selected, for example, according to the type of binder contained in the multifunctional particle mixture.

8 and 9 show an embodiment of the suction roller 240. FIG. 8 is a perspective view of the suction roller 240, and FIG. 9 is a sectional view of the suction roller 240. FIG. 9 is a cross-sectional view of the pressure roller 250. As shown in Fig. 8 and 9, the suction roller 240 may include a central fixing roller 242 and a cylindrical rotating roller 244 provided so as to surround the circumferential surface of the fixing roller 242 have. The rotating roller 244 is rotated on the surface of the fixed roller 242 and is rotated by the rotating roller 244 by a rotating ball 245 or the like disposed between the fixed roller 242 and the rotating roller 244 in one example. Can be rotated on the surface of the fixing roller 242. [

In addition, at least one suction port 242a is formed through the fixing roller 242. In addition, a plurality of suction holes 244a are formed in the rotating roller 244. At this time, the fixing roller 242 has a suction force by a suction pump (not shown). The suction force by the driving of the suction pump is transmitted to the gas permeable base material S through the suction port 242a of the fixed roller 242 and the suction hole 244a of the rotating roller 244. [

When the above-described production apparatus is used, the multifunctional particle mixture can be continuously coated and cured (dried), which can also make the multifunctional particles 65 adhere to (adsorb) to the surface of the substrate S as much as possible .

Specifically, the substrate S wound around the unwinding roller 110 is fed to the roll coater 200 along the first guide roller 131. The substrate S is coated on the surface of the substrate S to a predetermined thickness while the multifunctional particle mixture supplied from the material supply portion 230 is supplied to the surface of the substrate S while passing between the support portion 210 and the coating roller 220. [ The substrate S coated with the multifunctional particle mixture is then passed between the suction roller 240 and the pressure roller 250 and then continuously supplied to the curing unit 300. The curing unit 300 of the curing unit 300 The multi-functional particle mixture is cured (dried) to form the multifunctional layer 62 by the magnetic layer 330. Accordingly, the multifunctional sheet 60 having the multifunctional layer 62 formed on the substrate S is easily produced through the continuous process of coating and curing (drying) 2 winding rollers 120 along the guide rollers 132.

The multifunctional particles 65 included in the multifunctional particle mixture are introduced into the substrate S by the suction force of the suction roller 240 in the course of passing between the suction roller 240 and the pressure roller 250, (Adsorbed). Thus, when the multifunctional particle mixture is coated and passed through the suction roller 240, the multifunctional particles 65 can be adhered (adsorbed) at a high density so as to come into contact with the surface of the base material S as much as possible.

In addition, in the process of sucking by the suction roller 240, the pressure roller 250 presses the upper surface of the multi-function layer 62 to have a uniform thickness while having a good surface leveling property (leveling property). At this time, depending on the case, the pressure roller 250 may have a structure in which an elastic body 252 such as rubber is coated.

As described above, a plurality of conveying rollers 320 may be installed in the chamber 310 of the curing machine 300. Among the plurality of conveying rollers 320, at least the conveying rollers 320, That is, the first conveying rollers 320 and 320-1 (the rollers positioned on the left side in FIG. 7) installed adjacent to the suction roller 240 may be configured in the same manner as the suction roller 240.

10 and 11 show an embodiment of the conveying rollers 320 and 320-1. FIG. 10 is a perspective view of the conveying rollers 320 and 320-1. FIG. FIG. 10 and 11, a first conveying roller (not shown) provided at least in front of the plurality of conveying rollers 320 is provided so that the multifunctional particles 65 can be closely attached (sucked) 320-1 may include a center fixing roller 322 and a cylindrical rotating roller 324 provided so as to surround the circumferential surface of the fixing roller 322. [ The rotating roller 324 is rotated on the surface of the fixing roller 322 and rotated by the rotating roller 322 or the like by a rotating ball 325 disposed between the fixing roller 322 and the rotating roller 324 in one example 324 may be rotated on the surface of the fixing roller 322.

At least one suction port 322a may be formed in the surface of the fixing roller 322 and a plurality of suction holes 324a may be formed in the surface of the rotating roller 324. [ At this time, the fixing roller 322 may have a suction force by a suction pump (not shown). Accordingly, even in the curing process, the multifunctional particles 65 adhere to the surface of the base material S at a high density so as to be brought into contact with the surface of the base material S by the suction force of the conveying rollers 320 (320-1).

When the suction force is applied through the suction roller 240 and / or the conveying rollers 320 and 320-1 as described above, even when the multifunctional particle mixture has a high viscosity, It can be brought into close contact with the surface as much as possible.

Further, according to an exemplary embodiment of the present invention, the multi-functional sheet 60 may include irregularities. In one example, irregularities may be formed on the contact interface between the substrate sheet 61 and the multi-functional layer 62. The irregularities may be formed by, for example, passing the base material sheet 61 through an emboss roller or pressing the base material sheet 61 by using an embossed plate. By such unevenness, the contact area between the base sheet 61 and the multifunctional layer 62 is increased, for example, the interlaminar adhesive strength can be improved.

According to the present invention described above, the multi-functional particles 65 are simultaneously provided with far-infrared radiation activity, antibacterial activity, and deodorization ability. Particularly, when fulgide as a specific natural mineral and / or fullerene separated from the above-mentioned gut mineral is used as the multifunctional particle 65, the far infrared ray activity, antibacterial activity and deodorization ability can be simultaneously achieved, (Effects) are superior to conventional natural minerals and plant extracts. In addition, according to the present invention, the use of low-cost natural minerals (gut minerals) in achieving the above-mentioned multi-functions has high productivity and economy.

The multifunctional layer 62 and the multifunctional sheet 60 including the multifunctional layer 62 may have a far infrared emissivity of 0.88 or more and a bacteriostatic reduction rate of 99% or more. The far-infrared ray emissivity may be specifically 0.88 to 0.92, and more specifically 0.88 to 0.92. In addition, the multifunctional layer 62 and the multifunctional sheet 60 may have a deodorization ratio of 70% or more, specifically 75% to 98%, or 85% to 98%. At this time, the far-infrared emissivity is a value measured by a test method according to KFIA-FI-1005, and the bacterium reduction rate is determined by a test method such as Staphylococcus aureus ATCC 6538 ) and Klebsiella pneumoniae ATCC 4352 ) as measured by the test method according to KS K 0693. The deodorization rate may be a value measured after 30 minutes (or 60 minutes) according to the test method according to KFIA-FI-1004 using ammonia gas as a test gas.

[Example]

Hereinafter, embodiments of the present invention will be exemplified. The following examples are provided to illustrate the present invention in order to facilitate understanding of the present invention, and thus the technical scope of the present invention is not limited thereto.

[Analysis of constituents of ghid minerals]

As natural minerals, Russian acid minerals (collected from mines in Kareliya region of Russia) were purchased and analyzed for their constituents. Table 1 below shows the results of the composition analysis of the ghid minerals. In Table 1 below, the content of each component is the average composition based on the dry weight.

             As a result of composition analysis of the <gid mineral, weight%> SiO ₂ C TiO ₂ Al ₂ O ₃ FeO MgO CaO Na ₂ O CuO S Crystalline phase 57 28 0.2 4.3 2.8 1.2 0.3 0.2 1.5 1.5 Balance    - Crystalline phases: chloride and mica

As shown in the above Table 1, it was analyzed that the? -Gate mineral contained silicate (SiO ₂ ) as a main component and contained about 28% by weight of carbon (C). These gut minerals were pulverized with a ball mill to obtain gut particles, which were then used as multifunctional particles for producing a multifunctional sheet in each of the following examples.

[Example 1]

First, about 50% by weight of an acrylic copolymer (CAS No.: 30323-62-7) as water-soluble environmentally friendly binder, about 24% by weight of water and poly [oxy (dimethylsilylene)] (CAS No.:9016-00-6) (Specific gravity: about 2.4) having a particle size distribution of 5 to 20 μm was added thereto in an amount of about 25% by weight, and the mixture was stirred and stirred to prepare a binder solution having a viscosity of about 125.6 cps. A grit particle mixture was obtained. The content (wt.%) Of each component is based on the total weight of the grit particle mixture.

After the nonwoven fabric was prepared, the above-mentioned gist particle mixture was roll-coated on one surface of the nonwoven fabric to a thickness of about 150 탆, and then dried (cured) to prepare a urethane sheet (multifunctional sheet specimen) according to this example. The prepared sheet was evaluated for far-infrared radiation activity, antimicrobial activity and deodorization ability as follows.

&Lt; Far infrared ray radiation test >

Far - infrared emissivity and radiant energy were measured to investigate far infrared radiation. At this time, the far-infrared ray emissivity and the radiant energy were measured using an FT-IR spectrometer at 37 캜 according to the test method of KFIA-FI-1005 (KFIA: Korea Far Industry Association) at a measurement wavelength of 5 탆 to 20 탆 Respectively. The results are shown in Table 2 below.

&Lt; Antibacterial activity test >

To determine the antimicrobial activity, the initial concentration and the concentration after 18 hours were measured for each sample of the standard foam sheet according to the test method of KS K 0693). At this time, Staphylococcus aureus ATCC 6538 ) and pneumococci ( Klebsiella pneumoniae ATCC 4352 ) was used. The results are shown in Table 3 below.

12 and 13 are photographs of each sample according to the antibacterial activity test. Fig. 12 is a graph showing the activity of Staphylococcus aureus ATCC 6538 ), and Figure 13 shows the results for Klebsiella pneumoniae ATCC 4352 ).

<Deodorization Test>

To determine deodorization ability, gas concentration and deodorization rate (%) were measured with time according to the test method of KFIA-FI-1004 (KFIA: Korea Far Industry Association). At this time, ammonia gas was used as a test gas. The results are shown in Table 4 below. In addition, the graph of the gas concentration of each sample according to the deodorizing ability test is shown in FIG. 14 attached.

        &Lt; Evaluation results of far-infrared radiation activity of sheet specimen according to Example 1 > Emissivity Radiant energy
(W / m2 占 퐉), 37 占 폚) 0.903 3.48 x 10 ² 1) Test method: KFIA-FI-1005
2) The emissivity was calculated by comparing the measured values with FT-IR spectrometer against the black body.

                &Lt; Evaluation result of antimicrobial activity of sheet specimen according to Example 1 > Remarks sample Initial concentration
(CFU / ml) Concentration after 18 hours
(CFU / ml) Bacteriostatic reduction rate
(%) Staphylococcus
(Staphylococcus aureus ) Standard Four 4.9 x 10 ⁴ 2.7 x 10 ⁶ - Gilt sheet 8.4 x 10 ³ 99.7 Pneumococcus
( Klebsiella pneumoniae ) Standard Four 2.1 x 10 ⁴ 1.5 x 10 ⁶ - Gilt sheet &Lt; 2.0 x 10 ² 99.9 1) Test method: KS K 0693: 2011
2) Used strains
Staphylococcus aureus ATCC 6538
Klebsiella pneumoniae ATCC 4352
3) Nonionic surfactant: 0.05 wt% nonionic surfactant (Snogen)
4) Standard foil: KS K 0905 For dye fastness attached Cotton
5) The number of bacteria on the medium multiplied by the dilution factor.

             &Lt; Evaluation result of Deodorizing Ability of Sheet Specimen According to Example 1 > Remarks Elapsed time
(minute) Blank concentration
(ppm) Sample concentration
(ppm) Deodorization rate
(%) Deodorization test Early 500 500 - 30 460 120 74 60 440 100 77 90 430 90 79 120 420 80 81 1) Test method: KFIA-FI-1004
2) Test gas: ammonia
3) Gas concentration measurement: Gas detection tube
4) Blank: Measured without sample.

As shown in [Table 2] to [Table 4] and Figures 12 to 14 attached hereto, according to the present invention, a sheet coated with (coated) grit particles has far infrared radiation activity, antibacterial activity and deodorizing ability It was found that the performance was also excellent with three functions at the same time. For example, in general minerals such as germanium and elvan, the far infrared ray emissivity is about 0.85, whereas the? Ghite mineral according to the present invention has an excellent far infrared ray activity of 0.9 or more as shown in Table 2 Could know. In addition, it was found that the antibacterial rate (bacteriostatic reduction rate) was 99% or more and the deodorization rate was 80% or more (after 120 minutes), and had excellent antibacterial and deodorizing ability.

[Example 2]

The same procedure as in Example 1 was carried out except that the grit particle mixture was changed as follows.

Concretely, in preparing the toner particle mixture, first, about 35% by weight of a vinyl acetate / ethylene copolymer, about 39.5% by weight of water and about 0.5% by weight of poly [oxy (dimethylsilylene) (Specific gravity: about 2.3) having a particle size distribution of about 3 to 8 탆 was added thereto in an amount of about 25% by weight, followed by stirring to form a binder solution. The content (wt.%) Of each component is based on the total weight of the grit particle mixture.

The thus-obtained toner particle mixture was roll-coated on one side of the nonwoven fabric to a thickness of about 160 탆. Thereafter, allow the grit particles to settle sufficiently in the coated grit particle mixture for about 30 minutes, and then allow the grit particles to be as close to the nonwoven as possible. And dried (cured) while being sucked in an inhaler to prepare a sheet of the present invention.

The far infrared ray radiation activity, antimicrobial activity and deodorizing ability of the prepared sheet were evaluated in the same manner as in Example 1. [Table 5] shows the results of evaluating the original extrinsic activity, and Table 6 shows the results of evaluating the antimicrobial activity. Table 7 below shows the deodorizing ability evaluation results. 15 and 16 are photographs of respective samples according to the antibacterial activity test, and Fig. 15 is a photograph of Staphylococcus aureus ATCC 6538 ), Figure 16 shows the results for Klebsiella pneumoniae ATCC 4352 ). 17 is a graph showing the gas concentration of each sample according to the deodorizing ability test.

        &Lt; Evaluation results of far-infrared radiation activity of sheet specimen according to Example 2 & Emissivity Radiant energy
(W / m2 占 퐉), 37 占 폚) 0.905 3.49 x 10 ² 1) Test method: KFIA-FI-1005
2) The emissivity was calculated by comparing the measured values with FT-IR spectrometer against the black body.

                &Lt; Evaluation result of antimicrobial activity of sheet specimen according to Example 2 > Remarks sample Initial concentration
(CFU / ml) Concentration after 18 hours
(CFU / ml) Bacteriostatic reduction rate
(%) Staphylococcus
(Staphylococcus aureus ) Standard Four 5.6 x 10 ⁴ 3.8 x 10 ⁶ - Gilt sheet &Lt; 2.0 x 10 ² 99.9 Pneumococcus
( Klebsiella pneumoniae ) Standard Four 2.5 x 10 ⁴ 1.4 x 10 ⁶ - Gilt sheet &Lt; 2.0 x 10 ² 99.9 1) Test method: KS K 0693: 2011
2) Used strains
Staphylococcus aureus ATCC 6538
Klebsiella pneumoniae ATCC 4352
3) Nonionic surfactant: 0.05 wt% nonionic surfactant (Snogen)
4) Standard foil: KS K 0905 For dye fastness attached Cotton
5) The number of bacteria on the medium multiplied by the dilution factor.

               &Lt; Evaluation result of Deodorizing Ability of Sheet Specimen According to Example 2 > Remarks Elapsed time
(minute) Blank concentration
(ppm) Sample concentration
(ppm) Deodorization rate
(%) Deodorization test Early 500 500 - 30 470 65 86 60 460 50 89 90 450 30 93 120 440 20 95 1) Test method: KFIA-FI-1004
2) Test gas: ammonia
3) Gas concentration measurement: Gas detection tube
4) Blank: Measured without sample.

As shown in [Table 5] to [Table 7], and as shown in Figs. 15 to 17, it was found that the performance was excellent while having far-infrared radiation activity, antibacterial activity and deodorizing ability at the same time. In comparison with the sheet specimen of Example 1 and the sheet specimen of Example 2, the case of Example 2 is highly evaluated in terms of far-infrared radiation activity, antibacterial activity, and deodorizing ability. This is probably due to the viscosity of the binder liquid, the specific gravity / size of the grit particles, and the suction force, resulting in dense grit particles.

[Example 3]

(1) Separation of fullerene

The grit minerals were ground to have a particle size distribution of about 10 to 20 占 퐉. In a heating stirrer, 200 g of the above-mentioned grit particles, 250 g of KOH solution (10 wt% KOH aqueous solution) and 20 g of NaBO ₂ .4H ₂ O were mixed with 300 g of distilled water, and the mixture was heated and stirred at 95 ° C for 5 hours. Thereafter, the heated agitated material was filtered to obtain a residue (solid matter), which was then washed several times with wash water (distilled water) and washed until the wash water reached a pH of 7. After removing the washing water by filtration, it was placed in an oven and dried at a temperature of about 250 ° C. At this time, the dried product was a porous sponge-like particle, and the content of ash was estimated to be about 5.1 wt%.

Next, the dried product was put into an electric furnace and heat-treated at about 1,800 ° C for 1 hour. Thereafter, the heat-treated product was finely pulverized using an oscillating mill so as to have an average particle size distribution of about 2 mu m to obtain fullerene in fine pores having a well-developed pore structure.

FIG. 18 attached is a result of measuring the carbon number distribution ratio using the spectra analyzer for the fullerene obtained as described above, which is a result of the Maldi-Tof mass spectra analysis. 19 is a graph showing the result of a Maldist-Toff mass spectrometric analysis of fullerene (C ₆₀ ) produced by arc discharge using graphite as a conventional artificial synthesis method.

As shown in FIG. 18, it was found that the feldspar contained a large amount of fullerene, from which fullerene having various carbon numbers was obtained. That is, in comparison with the fullerene of FIG. 19, which is produced using graphite as a raw material, fullerene extracted and separated from? Gut minerals has various carbon number distributions such as C ₅₅ , C ₇₄ , C _{93 and} C ₁₁₂ .

(2) Production of fullerene sheet

The same procedure as in Example 1 was carried out except that the fullerene sheet (multifunctional sheet specimen) was produced as follows using the fullerene fine particles obtained above in place of the?

First, about 50% by weight of an acrylic copolymer (CAS No.: 30323-62-7) as water-soluble environmentally friendly binder, about 24% by weight of water and poly [oxy (dimethylsilylene)] (CAS No.:9016-00-6) To obtain a binder solution having a viscosity of about 125.6 cps. Then, about 25% by weight of fullerene fine particles was added to the mixture, followed by mixing and stirring to obtain a mixture of fullerene particles. Then, the nonwoven fabric was prepared, and the fullerene particle mixture was roll-coated on one side of the nonwoven fabric to a thickness of about 150 mu m and then dried (cured) to prepare a fullerene sheet (multifunctional sheet specimen) according to this example.

The thus prepared fullerene sheet was evaluated for far-infrared radiation activity, antimicrobial activity and deodorizing ability in the same manner as in Example 1 above. [Table 8] shows evaluation results of the original extrinsic radioactivity, and Table 9 below shows the results of evaluation of antimicrobial activity, and Table 10 below shows evaluation results of deodorizing ability.

        &Lt; Evaluation result of far infrared ray activity of sheet specimen according to Example 3 & Emissivity Radiant energy
(W / m2 占 퐉), 37 占 폚) 0.901 3.27 x 10 ² 1) Test method: KFIA-FI-1005
2) The emissivity was calculated by comparing the measured values with FT-IR spectrometer against the black body.

                &Lt; Evaluation result of antimicrobial activity of sheet specimen according to Example 3 > Remarks sample Initial concentration
(CFU / ml) Concentration after 18 hours
(CFU / ml) Bacteriostatic reduction rate
(%) Staphylococcus
(Staphylococcus aureus ) Standard Four 5.2 x 10 ⁴ 2.3 x 10 ⁶ - Fullerene sheet &Lt; 1.6 x 10 ² 99.9 1) Test method: KS K 0693: 2011
2) Strain used: Staphylococcus aureus ATCC 6538
3) Nonionic surfactant: 0.05 wt% nonionic surfactant (Snogen)
4) Standard foil: KS K 0905 For dye fastness attached Cotton
5) The number of bacteria on the medium multiplied by the dilution factor.

             &Lt; Evaluation result of deodorizing ability of sheet specimen according to Example 3 > Remarks Elapsed time
(minute) Blank concentration
(ppm) Sample concentration
(ppm) Deodorization rate
(%) Deodorization test Early 500 500 - 30 460 50 89 60 450 25 94 90 440 20 95 120 430 15 97 1) Test method: KFIA-FI-1004
2) Test gas: ammonia
3) Gas concentration measurement: Gas detection tube
4) Blank: Measured without sample.

As shown in Tables 8 to 10, the fullerenes separated from? -Gut minerals also have three functions of far-infrared radiation activity, antimicrobial activity and deodorization ability, and their performance is also excellent . In comparison with the sheet specimen of Example 1 (Example) and the sheet specimen of Example 3 (fullerene), it was found that the case of Example 3 using fullerene as the multifunctional particle shows excellent deodorizing performance there was. This is because the fullerene has a well-developed pore structure.

[Examples 4 to 6]

A polyethylene terephthalate film (hereinafter, PET film) having a thickness of about 200 mu m was prepared as a substrate sheet. On one side of the PET film, a toner particle mixture was rolled to a thickness of about 150 탆, and then dried (cured) to prepare a glass sheet sample (glass PET film) according to the present examples.

The above-mentioned grit particle mixture was prepared by mixing about 32% by weight of grit particles (specific gravity: about 2.3) having a particle size distribution of about 3 to 8 μm based on the total weight of the grit particle mixture and about 68% by weight of the binder solution. The binder solution used herein was a mixture of about 42 wt% binder, about 25.5 wt% water, and about 0.5 wt% poly [oxy (dimethylsilylene)] based on the total weight of the toner particles mixture, As shown in FIG. 3B, the binders were used differently according to each example.

Specifically, the acrylic copolymer (CAS No.: 30323-62-7) alone was used as the binder in Example 4, and the acrylic copolymer (CAS No.: 30323-62-7) was used in Examples 5 and 6, And a butadiene-styrene-methyl methacrylate copolymer were mixed. The butadiene-styrene-methyl methacrylate copolymer was prepared by copolymerizing 34% by weight of a butadiene monomer, 8% by weight of a styrene monomer and 58% by weight of a methyl methacrylate monomer, and the nanoparticles having a particle size distribution of about 120 nm to 220 nm Were used.

Further, the interlayer adhesive force was evaluated for the sheet (PET film) of each of Examples 4 to 6 manufactured as described above. At this time, the peel strength between the PET film and the base layer was evaluated by using a 90 degree peel test method. The results are shown in Table 11 below.

              &Lt; Evaluation result of adhesive force according to binder > Remarks bookbinder Weight ratio (B1: B2) Adhesion Example 4 B1 100: 0 257 gf / cm &lt; 2 &gt; Example 5 B1 + B2 85: 15 341 gf / cm 2 Example 6 B1 + B2 60: 40 362 gf / cm &lt; 2 &gt; * B1: Acrylic copolymer
* B2: Butadiene-styrene-butyl methacrylate copolymer

As shown in Table 11, it was found that the interlayer adhesion was excellent as the content of the butadiene-styrene-methyl methacrylate copolymer was increased.

10: support frame 20: filtration member
21: first filtration layer 22: second filtration layer
60: Multifunctional sheet 61: Substrate sheet
62: Multifunctional layer 65: Multifunctional particle
100: air purifying filter 110: unwinding roller
120: winding roller 200: roll coater
210: Support part 220: Coating roller
230: Material supply part 240: Suction roller
250: pressure roller 300: curing machine
310: chamber 320: conveying roller
330: hardening means S: substrate

Claims (6)

A support frame (10) mounted on a filter insertion portion of an automobile;
A filtration member (20) formed on the support frame (10) for purifying air; And
The air purifying filter (100) for an automobile according to any one of the preceding claims, wherein the air purifying filter (100) comprises multifunctional particles (65) having both far-infrared radiation activity, antibacterial activity and deodorization ability.
The method according to claim 1,
The automotive air filter (100) includes a multi-functional sheet (60)
The multi-functional sheet (60)
A base sheet 61,
And a multi-functional layer (62) formed on the substrate sheet (61)
Wherein the multifunctional layer (62) comprises the multifunctional particles (65) and a binder.
3. The method of claim 2,
The multifunctional layer 62 is formed by applying a multifunctional particle mixture containing the multifunctional particles 65 and a binder liquid onto the base material sheet 61,
The specific gravity of the multifunctional particles (65) is 2.1 to 2.6,
Wherein the binder liquid comprises a binder and a solvent,
The viscosity of the binder solution is 30 cps to 60 cps,
The multi-function layer (62)
Characterized in that the multifunctional particles (65) are densely formed toward the base sheet (61) by sedimentation of the multifunctional particles (65) after the multifunctional particle mixture is applied on the base material sheet (61) Purification filter (100).
3. The method of claim 2,
The multifunctional layer (62) further comprises an additive,
Characterized in that the additive comprises poly [oxy (dimethylsilylene)].
3. The method of claim 2,
Wherein the binder comprises a butadiene-styrene-alkyl methacrylate copolymer.
An automobile comprising an automotive air filter (100) according to any one of claims 1 to 5.

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