KR20230137560A - Method of manufacturing sealant containing glass flakes coated with photocatalyst - Google Patents

Abstract

The present invention relates to a method for manufacturing a sealant containing glass flakes coated with a photocatalyst, comprising the steps of preparing raw materials containing a photocatalyst, glass flakes, and a sealant composition; A coating step of coating the photocatalyst on the surface of the glass flake; and a manufacturing step of preparing a sealant by stirring the coated glass flake and the sealant composition, wherein the photocatalyst is made of anatase phase and rutile phase titanium dioxide (TiO ₂ ). do.
According to the present invention, the weather resistance and anti-fungal properties of silicone sealant are significantly improved.

Description

Method for manufacturing a sealant containing glass flakes coated with a photocatalyst {METHOD OF MANUFACTURING SEALANT CONTAINING GLASS FLAKES COATED WITH PHOTOCATALYST}

The present invention relates to a method for manufacturing a sealant comprising glass flakes coated with a photocatalyst, and more specifically, to the production of a sealant comprising glass flakes coated with a photocatalyst with significantly improved weather resistance and anti-fungal properties and improved aesthetics. It's about method.

Silicone sealant is a type of sealing agent that is mainly composed of polysiloxane derivatives and is used as a watertight and sealing agent. Among them, the one-component silicone sealant used without separate mixing treatment is a high-viscosity oil mixture when stored, and when exposed to the outside and in contact with moisture in the air, it hardens and transforms into a rubbery form.

These silicone sealants are used as waterproof adhesives indoors and outdoors, and after a certain period of time after construction, the surface is easily contaminated by microorganisms or mold growth. Such contamination is difficult to remove and corrodes the surface of the silicone sealant, reducing durability and adhesion.

Existing methods to prevent this include, firstly, making it difficult for contaminants to attach to the surface of the silicone sealant, making it difficult for microorganisms or mold to grow, and secondarily, adding organic antibacterial agents, silver nanoparticles, etc. to the silicone sealant itself to prevent antibacterial activity. There are methods to prevent the growth of microorganisms and molds by imparting activity, but these existing methods have a problem in that their effectiveness is minimal.

Meanwhile, a photocatalyst is a metal oxide that generates active oxygen by light, and is used to improve chemical resistance, wear resistance, pollution resistance such as decomposition of environmental pollutants, and antibacterial properties. These photocatalysts include titanium dioxide (TiO ₂ ), tin oxide (ZnO), zirconium oxide (ZrO ₂ ), cadmium sulfide (CdS), and molybdenum sulfide (MoS ₂ ). Among these, titanium dioxide is non-toxic and easily dissolved in water. It is known to be insoluble and very stable to light.

Titanium dioxide has three polymorphs: anatase, rutile, and brookite. At low temperatures and high pH, it forms an anatase phase, and at relatively high temperatures and low pH. At pH, it forms a rutile phase.

When titanium dioxide forms a coating layer, the anatase phase is known to be advantageous for photocatalysis because it has a larger number of atoms per unit lattice than the rutile phase. The rutile phase has a lower photocatalytic effect than the anatase phase, but has a high refractive index and is used as a pearlescent pigment in sealants. This has the advantage of improving the aesthetics of the coating layer.

Meanwhile, glass flakes are glass powders with a plate-shaped structure that are widely used in anti-corrosion paints, floor coatings, anti-condensation paints, heat-resistant paints, wear-resistant/scratch-resistant paints, and pearl pigments. They are made of alkali glass or boric acid. It is produced using silicate glass as a raw material through high-temperature melting and high-temperature combustion, and plays a role in improving the physical properties such as water resistance, chemical resistance, and abrasion resistance of the paint.

Under the above-described background, the present inventor developed a method for manufacturing a sealant containing glass flakes coated with a photocatalyst that can improve the weather resistance and anti-fungal properties of the silicone sealant while simultaneously improving the aesthetics of the silicone sealant, and confirmed the effect. Thus, the present invention was completed.

Republic of Korea No. 10-1972022

The purpose of the present invention is to solve the above-described conventional problems, and to provide a method for manufacturing a sealant comprising glass flakes coated with a photocatalyst with significantly improved weather resistance and anti-fungal properties and improved aesthetics.

The above object is, according to the present invention, a preparatory step of preparing raw materials including a photocatalyst, glass flake, and a sealant composition; A coating step of coating the photocatalyst on the surface of the glass flake; and a manufacturing step of preparing a sealant by stirring the coated glass flake and the sealant composition, wherein the photocatalyst is made of anatase phase and rutile phase titanium dioxide (TiO ₂ ). This is achieved by a method for producing a sealant comprising glass flakes coated with a photocatalyst.

In addition, the coating step includes a first coating step in which tin oxide (SnO ₂ ) is coated on the surface of the glass flake to form a tin oxide layer, and the titanium dioxide is coated on the tin oxide layer to form a titanium dioxide layer. A second coating step is formed, a third coating step in which silicon dioxide (SiO ₂ ) is coated on the titanium dioxide layer to form a silicon dioxide layer, and a drying step of drying the coated glass flakes, Titanium dioxide may be mixed with an anatase phase and a rutile phase at a predetermined molar ratio.

Additionally, the tin oxide layer may be formed to a thickness of 20 to 50 nm, the titanium dioxide layer may be formed to a thickness of 100 to 150 nm, and the silicon dioxide layer may be formed to a thickness of 100 to 150 nm.

Additionally, in the manufacturing step, the coated glass flake and the sealant composition may be stirred at a weight ratio of 1:4.

Additionally, the manufacturing step may be performed for 2 to 6 hours at a temperature range of 100 to 180°C.

According to the present invention, the weather resistance and anti-fungal properties of silicone sealant are significantly improved.

In addition, according to the present invention, since titanium dioxide on rutile is mixed in a preset ratio, hydroxyl radicals can be generated not only in ultraviolet rays but also in visible rays, and a sterilizing effect can be expected.

In addition, according to the present invention, an aesthetic improvement effect such as a pearlescent pigment can be expected due to titanium dioxide on rutile mixed at a preset ratio.

Meanwhile, the effects of the present invention are not limited to the effects mentioned above, and various effects may be included within the range apparent to those skilled in the art from the contents described below.

Figure 1 overall shows a method for manufacturing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention;
Figure 2 shows the detailed steps of the coating step of the method for manufacturing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention;
Figure 3 shows the anatase phase of titanium dioxide in the method for producing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention;
Figure 4 shows the rutile phase of titanium dioxide in the method for producing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention;
Figure 5 shows the photocatalytic reaction of titanium dioxide in the method for producing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention;
Figure 6 shows the results of a photo-oxidation activity test of a method for producing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention;
Figure 7 shows a cross-section of the reactor of the method for producing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention;
Figure 8 is an exploded perspective view of a stirrer in a method of manufacturing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings.

Additionally, in describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

Additionally, when describing components of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term.

From now on, with reference to the attached drawings, a method (S100) for manufacturing a sealant including glass flakes coated with a photocatalyst according to an embodiment of the present invention will be described in detail.

Figure 1 overall shows a method for manufacturing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention, and Figure 2 shows a method for manufacturing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention. It shows the detailed steps of the coating step of the sealant manufacturing method, and Figure 3 shows the anatase phase of titanium dioxide in the sealant manufacturing method including glass flakes coated with a photocatalyst according to an embodiment of the present invention. Figure 4 shows the rutile phase of titanium dioxide in the method of manufacturing a sealant including glass flakes coated with a photocatalyst according to an embodiment of the present invention, and Figure 5 shows a rutile phase of titanium dioxide coated with a photocatalyst according to an embodiment of the present invention. It shows the photocatalytic reaction of titanium dioxide in the method for producing a sealant containing glass flakes, and Figure 6 shows the photo-oxidation activity test results of the method for producing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention. It is shown.

As shown in FIGS. 1 to 6, the method (S100) for manufacturing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention includes a preparation step (S110), a coating step (S120), Includes a manufacturing step (S130).

The preparation step (S110) is a step of preparing raw materials including a photocatalyst, glass flake, and sealant composition.

Here, the photocatalyst is made of titanium dioxide (TiO ₂ ). As a photocatalyst, titanium dioxide is a safe material with excellent durability and wear resistance. It has a higher oxidizing power than chlorine or ozone, so it has excellent sterilizing power, and has the property of decomposing all organic substances into carbon dioxide gas and moisture. Even when disposed of, it is free from secondary pollution. It has the characteristic of not having to worry about Accordingly, titanium dioxide is widely used for air purification, self-cleaning effect, water purification, and deodorization functions.

As shown in Figure 5, when titanium dioxide is exposed to ultraviolet or visible light, free electrons (e-) and holes (h+) are generated on the surface, and the free electrons react with oxygen on the photocatalyst surface to produce superoxide anions (O ₂ -) is created. Additionally, holes react with moisture (H ₂ O) present in the air to generate hydroxyl radicals (·OH). The hydroxyl radicals generated at this time have an excellent ability to oxidize and decompose organic substances, so they decompose germs such as odorous substances, viruses, and bacteria existing in the air and change them into water and carbon dioxide, thereby achieving air purification and self-cleaning effects. , performs water purification and deodorization functions.

The crystal structure of titanium dioxide is largely divided into anatase phase, rutile phase, and brookite phase, and the anatase phase, which is a low-temperature phase, and the rutile phase, which is a high-temperature phase, are commonly used.

The anatase phase is known to be advantageous for photocatalysts because it has more atoms per unit lattice than the rutile phase. The rutile phase has a lower photocatalytic effect than the anatase phase, but has a high refractive index, so it can achieve the same effect as pearlescent pigments in sealants, improving the aesthetics of the coating layer. There is an advantage to this.

Accordingly, in the present invention, among the three homogeneous phases of titanium dioxide, the anatase phase of Figure 3 and the titanium dioxide of the rutile phase of Figure 4 are prepared by mixing them in a preset ratio, preferably the ratio of the anatase phase and the rutile phase is 3. It is prepared from titanium dioxide mixed at a mole ratio of :1. If the ratio of the anatase phase is lower than the above-mentioned ratio, there is a problem that the photocatalytic activity effect is inhibited, and if the ratio of the rutile phase is lower than the above-mentioned ratio, the effect of the pearlescent pigment of the titanium dioxide coating layer is low, which reduces the aesthetic quality of the applied sealant. There is a problem that hinders this.

In addition, in the preparation step (S110), tin chloride (SnCl ₂ ), which is a precursor of tin oxide (SnO ₂ ), to be coated in the first coating step (S121) to be described later, and tin dioxide to be coated in the third coating step (S123) to be described later. Raw materials such as sodium silicate (Na ₂ SiO ₃ ), which is a precursor of silicon (SiO ₂ ), and sodium hydroxide solution and hydrochloric acid solution for synthesizing tin oxide and silicon dioxide from the precursors, respectively, are prepared.

Glass flakes are glass powders with a plate-like structure, which play a role in increasing the physical properties of paints such as water resistance, chemical resistance, and abrasion resistance. The surface of these glass flakes is coated with a photocatalyst through a coating step (S120) described later. Titanium dioxide is coated, and each flake preferably has a thickness of 5㎛ and a diameter of 50 to 500㎛.

The sealant composition prepared in the preparation step (S110) includes polyvinyl methyl siloxane (PVMS), silicon dioxide (SiO ₂ ), quartz powder, talc powder, silicone resin, and addition reaction. It includes catalysts, etc., and in addition, in the preparation step (S110), raw materials such as photooxidation stabilizers, flame retardants, plasticizers, and adhesives are prepared as needed and added to the reactor 100 in the production step (S130) described later.

The coating step (S120) is a step of coating the photocatalyst on the surface of the glass flake and is performed through the reactor 100.

In more detail, the coating step (S120) includes a first coating step (S121), a second coating step (S122), a third coating step (S123), and a drying step (S124).

The first coating step (S121) is a step in which tin oxide (SnO ₂ ) is coated on the surface of the glass flake through hydrothermal synthesis to form a tin oxide layer.

That is, the first coating step (S121) is a step of coating tin oxide so that titanium dioxide can be chemically and stably coated on the glass flake. Tin oxide is separated using a precursor and sodium hydroxide according to a hydrothermal synthesis method. By first coating on the flake, a tin oxide layer is formed on the surface of the glass flake, and the approximate formula for this is as follows.

More specifically, the first coating step (S121) uses a peristaltic pump, adjusts the pH appropriately in the temperature range of 70 to 80 ° C, and conducts the reaction so that the thickness of the tin oxide layer is 20 to 50 nm. After drying, the stirring speed of the stirrer 120 in the reactor 100 is adjusted to 30 to 40 rpm to prevent cracks in the coating layer or damage to the glass flakes.

If the thickness of the tin oxide layer is less than 20 nm or more than 50 nm, there is a problem in that it is difficult to form the titanium dioxide layer stably in the second coating step (S122).

The second coating step (S122) is a step in which titanium dioxide is coated on the tin oxide layer to form a titanium dioxide layer.

That is, in the second coating step (S122), the glass flake coated with tin oxide through the first coating step (S121) in the reactor 100 and the anatase phase and rutile phase as described above are mixed at a preset ratio, preferably 3: A titanium dioxide powder suspension mixed at a ratio of 1 is added and fixed using a binder (condensation polymer of silicon alkoxide or fluorine-based resin, etc.) to form a titanium dioxide layer.

More specifically, the second coating step (S122) uses a peristaltic pump, adjusts the pH appropriately in the temperature range of 70 to 80 ° C, and conducts the reaction so that the thickness of the titanium dioxide layer is 100 to 150 nm. After drying, the stirring speed of the stirrer 120 in the reactor 100 is adjusted to 30 to 40 rpm to prevent cracks in the coating layer or damage to the glass flakes.

If the thickness of the titanium dioxide layer is less than 100 nm, the photocatalytic activity effect is impaired and the aesthetic improvement effect of the silicone sealant cannot be expected. If the thickness of the titanium dioxide layer is more than 150 nm, the There is a problem in that the titanium layer detaches from the surface of the glass flake due to its thickness.

The third coating step (S123) is a step in which silicon dioxide is coated on the titanium dioxide layer to form a silicon dioxide layer.

That is, the third coating step (S123) is a step to prevent discoloration of glass flakes when mixed with the sealant composition by forming a protective layer. Silicon dioxide is applied to the titanium dioxide layer using a precursor and hydrochloric acid according to a hydrothermal synthesis method. A silicon dioxide layer is formed by coating, and the approximate formula for this is as follows.

More specifically, the third coating step (S123) uses a peristaltic pump, adjusts the pH appropriately in the temperature range of 70 to 80 ° C, and conducts the reaction so that the thickness of the silicon dioxide layer is 100 to 150 nm. At this time, the stirring speed of the stirrer 120 in the reactor 100 is adjusted to 30 to 40 rpm to prevent cracks in the coating layer or damage to the glass flakes.

If the thickness of the silicon dioxide layer is less than 100 nm, there is a problem that sufficient protection of the titanium dioxide layer cannot be achieved. If the thickness of the silicon dioxide layer is more than 150 nm, the titanium dioxide layer may be damaged due to its thickness. There is a problem that the photocatalytic activity effect is inhibited.

The drying step (S124) is a step of drying the coated glass flakes through the first coating step (S121), the second coating step (S122), and the third coating step (S123). The drying step (S124) is a step of drying the coated glass flakes. The flakes are sufficiently dried at a temperature of 200°C for 48 hours.

The manufacturing step (S130) is a step of manufacturing a silicone sealant by stirring the coated glass flake and the sealant composition.

That is, in the manufacturing step (S130), polyvinyl methyl siloxane (PVMS), silicon dioxide (SiO ₂ ), quartz powder, talc powder, silicone resin, addition reaction catalyst, and photooxidation. A silicone sealant is manufactured by adding coated glass flakes to a sealant composition prepared by appropriately mixing raw materials such as stabilizers, flame retardants, plasticizers, and adhesives and then stirring.

At this time, the coated glass flake and the sealant composition stirred in the manufacturing step (S130) may be stirred at a weight ratio of 1:4 at a temperature range of 100 to 180° C. for 2 to 6 hours.

If the ratio of glass flakes is lower than the above-mentioned ratio, there is a problem that the photocatalytic activity effect and the aesthetic improvement effect of the silicone sealant are impaired, and if the ratio of glass flakes is higher than the above-mentioned ratio, the applicability of the silicone sealant is impaired. There is a problem with falling.

Meanwhile, the sealant composition prepared by mixing in the manufacturing step (S130) may include amino acids.

Here, the amino acids are arginine, histidine, lysine, aspartic acid, glutamic acid, serine, threonine, asparagine, and glutamine. , cysteine, selenocysteine, glycine, proline, alanine, valine, isoleucine, leucine, methionine, phenylalanine ( It may include one or more selected from the group consisting of phenylalanine, tyrosine, and tryptophan, but is not limited thereto. At this time, in 100 parts by weight of the sealant composition, amino acids may be included in an amount of 0.1 to 0.3 parts by weight, but are not limited thereto.

More specifically, when the amino acid contained in the manufactured silicone sealant is irradiated with ultraviolet rays, the amino acid is photo-oxidized, thereby removing oxygen generated through titanium dioxide as a photocatalyst, thereby promoting the creation of holes on titanium dioxide. You can. Additionally, additional sterilizing effects are expected as amino acids are photo-ionized by ultraviolet irradiation and radicals are activated.

According to the method (S100) for manufacturing a sealant including glass flakes coated with a photocatalyst according to an embodiment of the present invention as described above, the weather resistance and anti-fungal properties of the silicone sealant are significantly improved.

In addition, according to the present invention, since titanium dioxide on rutile is mixed in a preset ratio, hydroxyl radicals can be generated not only in ultraviolet rays but also in visible rays, and a sterilizing effect can be expected.

In addition, according to the present invention, an aesthetic improvement effect such as a pearlescent pigment can be expected due to titanium dioxide on rutile mixed at a preset ratio.

Hereinafter, the operation and effects of the invention will be described in more detail through specific examples of the invention. However, this is presented as an example of the invention, and the scope of the invention is not limited by this in any way.

Example 1

After preparing glass flakes with a thickness of 5㎛ and a diameter of 50 to 450㎛, the precursors, tin chloride and sodium hydroxide, are added to the reactor along with the glass flakes using a metering pump, and then heated at 35 rpm at a temperature of 75°C. The mixture was stirred at a speed until a tin oxide layer of 20 to 50 nm was formed. Afterwards, titanium dioxide powder (Degussa P-25) mixed at 75% and 25% of the anatase phase and rutile phase, respectively, was prepared as a suspension, and then a 100 to 150 nm titanium dioxide layer was formed on the glass flake using a silicon alkoxide binder. It was stirred until. After that, the precursors, sodium silicate and hydrochloric acid, were added to the reactor using a metering pump, stirred at a temperature of 75°C at a speed of 35 rpm until a 100 to 150 nm silicon dioxide layer was formed, and then dried to form coated glass flakes. got it For the subsequent experiment, a silicone sealant was prepared by mixing a sealant composition (Dawoosil 988, Dow Chemical) and coated glass flakes at a weight ratio of 4:1.

Example 2

After obtaining coated glass flakes through the same process as in Example 1, the sealant composition (Dawoosil 988, Dow Chemical Company) and the coated glass flakes were mixed at a weight ratio of 4:1, and then 0.2 wt of phenylalanine was added. Silicone sealant was prepared by mixing %.

Example 3

After obtaining coated glass flakes through the same process as in Example 1, the sealant composition (Dawoosil 988, Dow Chemical Company) and the coated glass flakes were mixed at a weight ratio of 4:1, and then 0.2 wt of tyrosine was added. Silicone sealant was prepared by mixing %.

Example 4

After obtaining coated glass flakes through the same process as in Example 1, the sealant composition (Dawoosil 988, Dow Chemical Company) and the coated glass flakes were mixed at a weight ratio of 4:1, and then 0.2 wt of tryptophan was added. Silicone sealant was prepared by mixing %.

Experimental Example - Photo-oxidation activity experiment according to ultraviolet irradiation

Figure 6 shows the photo-oxidation activity test results of Examples 1 to 4 described above. Compared to the case where the sealant composition containing the glass flakes according to Example 1 was irradiated with ultraviolet rays for 1 hour, in Examples 2 to 4, When the sealant composition containing 0.2 parts by weight of amino acids is irradiated with ultraviolet rays for 1 hour after the glass flakes are mixed, phenylalanine, tyrosine, and tryptophan absorb the ultraviolet rays, and the amino acids are photo-oxidized. It can be seen that oxygen generated through titanium dioxide, a photocatalyst, can be removed, and thus the creation of holes on titanium dioxide is promoted, further promoting photo-oxidation activity.

Meanwhile, the coating step (S120) and the manufacturing step (S130) of the present invention are performed through the reactor 100, and when the stirrer 120 in the reactor 100 is rotated as one, the raw materials cannot be properly mixed and the reactor (100) There is a problem with certain raw materials being stored on the bottom edge, and when the rotation speed of the stirrer 120 is excessively increased for this purpose, the raw materials cannot be mixed smoothly, such as excessively colliding with the inner wall of the upper side of the tank 110. There is a problem. Accordingly, there is a need to improve this by varying the speed of the upper and lower parts of the stirrer 120.

Figure 7 shows a cross-section of the reactor of a method for producing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention, and Figure 8 shows a cross-section of a glass flake coated with a photocatalyst according to an embodiment of the present invention. This is an exploded perspective view of the stirrer of the sealant manufacturing method including.

As shown in Figures 7 and 8, the reactor 100 of the present invention includes a tank 110, a stirrer 120, a motor 130, a sensor unit, and a control unit in more detail.

The tank 110 provides a space where the raw materials in the coating step (S120) and the manufacturing step (S130) can be introduced and stirred. It is provided as a temperature-controllable tank 110 and has a stirrer 120, which will be described later, inside. is installed, and a motor 130, which will be described later, is installed on the outer bottom.

The stirrer 120 is used to stir the raw materials introduced in the coating step (S120) and the manufacturing step (S130). It is provided with a helical ribbon type impeller and is rotatably installed inside the tank 110. , At this time, the upper and lower parts of the stirrer 120 may be rotated at different rotation speeds.

In more detail, the stirrer 120 includes an upper pillar 121, a lower pillar 122, a gear part 123, and a fixing part 124.

The upper pillar 121 is rotatably disposed at the top inside the tank 110, and a ribbon-type impeller blade is installed along the outer circumference.

The lower pillar 122 is rotatably disposed at the bottom inside the tank 110, and a ribbon-type impeller blade is installed along the outer circumference.

The gear unit 123 reduces the rotational speed of the upper column 121 so that the upper column 121 and the lower column 122 can rotate at different rotational speeds. It is installed between (122).

In more detail, the gear unit 123 includes a sun gear 123a, a planetary gear 123b, and a ring gear 123c.

The sun gear 123a is installed on the lower pillar 122 connected to the motor 130 and rotates integrally with the rotation of the lower pillar 122. The sun gear 123a is installed so that a portion of the sun gear 123a is exposed to the lower pillar 122. is installed in

That is, the gear part of the sun gear 123a is arranged to be exposed to the lower pillar 122, and the rotation axis connected to the gear part is installed and fixed on a protrusion protruding from the inner wall of the lower pillar 122, so that the sun gear 123a is It rotates integrally with the rotation of the lower pillar 122. At this time, a blocking part 123a1 will be provided between the rotation axis of the sun gear 123a and the protrusion to block the raw materials to be mixed from flowing into the lower pillar 122. You can. This blocking unit may be made of rubber or silicone, but is not limited to the material.

A plurality of planetary gears (123b) are provided, each circumscribed and engaged with the sun gear (123a), and each is directly fastened to the bottom surface of the upper pillar (121).

The ring gear 123c is circumscribed and meshed with a plurality of planetary gears 123b, and is fixed by a fixing part 124 to be described later.

The fixing part 124 fixes the ring gear 123c, and one end is fastened to the ring gear 123c and the other end is fastened to the inner wall of the tank 110.

That is, the upper pillar 121 rotates by receiving the rotational power of the lower pillar 122, but reduces the reduced rotational power (rotation speed) through the sun gear 123a, planetary gear 123b, and ring gear 123c. It is transmitted and rotated.

The motor 130 is intended to provide rotational power to the above-mentioned stirrer 120, and is installed on the outer bottom of the tank 110 to provide rotational power to the lower pillar 122.

The sensor unit is partially in contact with the fluid inside the tank 110 to detect the viscosity of the fluid on the bottom edge of the tank 110. It is provided as a rotational viscometer and is installed on the bottom edge of the tank, and the agitator 120 It is installed so as not to interfere with the ribbon-type impeller blades.

The control unit controls the operation of the motor by detecting the viscosity of the fluid at the bottom edge of the tank 110 detected by the sensor unit, and is electrically connected to the motor 130 and the sensor unit. More specifically, when certain raw materials are stored at the bottom edge of the tank 110 and the viscosity of the raw material at the bottom edge exceeds the preset value, the control unit adjusts the operation of the motor so that the viscosity of the raw material at the bottom edge exceeds the preset value. Increase the rotation speed of the stirrer 120, that is, the lower column 122, until it becomes less than or equal to the value.

According to the reactor 100 as described above, even if the rotation speed of the lower part of the stirrer 120 is increased to prevent specific raw materials from accumulating on the bottom edge of the reactor 100, the rotation speed of the lower part of the stirrer 120 is Since the rotation speed may be lowered, the raw materials are prevented from excessively colliding with the inner wall at the top of the tank 110, which has the effect of allowing them to be mixed smoothly.

In the above, just because all the components constituting the embodiment of the present invention have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them.

In addition, terms such as “include,” “comprise,” or “have” described above mean that the corresponding component may be present, unless specifically stated to the contrary, and thus do not exclude other components. Rather, it should be interpreted as being able to include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology and, unless explicitly defined in the present invention, should not be interpreted in an idealized or overly formal sense.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

S100: Method for producing a sealant containing glass flakes coated with a photocatalyst according to an embodiment of the present invention
S110: Preparation stage
S120: Coating step
S121: First coating step
S122: Second coating step
S123: Third coating step
S124: Drying step
S130: Manufacturing stage
100: reactor
110: tank
120: stirrer
121: upper pillar
122: Lower pillar
123: Gear part
123a: sun gear
123a1: blocking unit
123b: planetary gear
123c: ring gear
124: fixing part
130: motor

Claims (5)

A preparation step of preparing raw materials including a photocatalyst, glass flake, and sealant composition;
A coating step of coating the photocatalyst on the surface of the glass flake; and
A manufacturing step of producing a sealant by stirring the coated glass flake and the sealant composition,
The photocatalyst is,
A method for producing a sealant comprising glass flakes coated with a photocatalyst, characterized in that it is prepared from anatase phase and rutile phase titanium dioxide (TiO ₂ ). In claim 1,
The coating step is,
A first coating step in which tin oxide (SnO ₂ ) is coated on the surface of the glass flake to form a tin oxide layer, and a second coating step in which the titanium dioxide is coated on the tin oxide layer to form a titanium dioxide layer; , a third coating step in which silicon dioxide (SiO ₂ ) is coated on the titanium dioxide layer to form a silicon dioxide layer, and a drying step of drying the coated glass flake,
The titanium dioxide is,
A method for producing a sealant comprising glass flakes coated with a photocatalyst, wherein an anatase phase and a rutile phase are mixed at a predetermined molar ratio. In claim 2,
The tin oxide layer is,
Formed to a thickness of 20 to 50 nm,
The titanium dioxide layer is,
Formed to a thickness of 100 to 150 nm,
The silicon dioxide layer is,
A method of producing a sealant comprising glass flakes coated with a photocatalyst, characterized in that they are formed to a thickness of 100 to 150 nm. In claim 1,
The manufacturing step is,
A method for producing a sealant including glass flakes coated with a photocatalyst, characterized in that the coated glass flakes and the sealant composition are stirred at a weight ratio of 1:4. In claim 4,
The manufacturing step is,
A method for producing a sealant containing glass flakes coated with a photocatalyst, characterized in that the process is carried out in a temperature range of 100 to 180° C. for 2 to 6 hours.