KR101303378B1 - Expanded perlite insulation, vacuum insulation panel using it and its manufacturing method - Google Patents

Abstract

The present invention relates to an expanded perlite molded article and a vacuum insulating material using the same, and more particularly, by using an expanded perlite molded article manufactured using a powder type thermosetting resin as a core material of a vacuum insulating material, a mechanical having a high specific surface area and an independent cell. The present invention relates to an expanded perlite molded article having a high thermal conductivity, forming a core material having high strength, and suppressing a decrease in physical properties due to physical impact or change over time, a vacuum insulation material using the same, and a method of manufacturing the same.

Description

Expanded perlite molded body, vacuum insulator using the same and manufacturing method thereof {EXPANDED PERLITE INSULATION, VACUUM INSULATION PANEL USING IT AND ITS MANUFACTURING METHOD}

The present invention relates to an expanded perlite molded article and a vacuum insulating material using the same, and more particularly, by using an expanded perlite molded article manufactured using a powder type thermosetting resin as a core material of a vacuum insulating material, a mechanical having a high specific surface area and an independent cell. The present invention relates to an expanded perlite molded article having a high thermal conductivity, forming a core material having high strength, and suppressing a decrease in physical properties due to physical impact or change over time, a vacuum insulation material using the same, and a method of manufacturing the same.

Vacuum Insulation Panel has a microporous insulation material as an inner core material in a panel made of a closed type, and vacuums the inside to remove heat transfer by conduction and convection, and thus extremely low thermal conductivity (0.005 W). / mK).

Such vacuum insulation to extreme due to the low thermal conductivity to, is applied to building insulation, refrigerator, special packaging has been in the spotlight as an energy-saving and green growth products, Passive house (Passive for the purpose that consumes minimize energy It is an insulator that is essential for house design and has already been applied and commercialized in developed countries such as Europe and America.

Determining the performance of the vacuum insulator, that is, low thermal conductivity, is a matter of core material, and Korean Patent Publication No. 10-0823798 “Fridge Using Vacuum Insulation Material and Vacuum Insulation Material”, Korean Patent Publication No. 10-0823406 “ As is known from many sources, such as vacuum insulators and refrigerators using the same, inorganic fibrous materials are currently used as core materials for representative vacuum insulators, which have a high specific surface area in the form of mats produced by the multi-orientation and multilayer adhesion of inorganic fibers. This is because it is easy to secure excellent thermal conductivity and stability in use because the risk of destruction by impact is low.

However, since the vacuum insulating material of the inorganic fibrous material is easily changed in volume, if the volume changes over time, there is a high possibility that the vacuum is broken and a decrease in the degree of vacuum occurs, and thus the thermal conductivity rapidly increases.

In addition, as known from many Korean Patent Publication No. 10-2010-0119939 "vacuum insulation material and vacuum insulation shell material", continuous foam-type foam, that is, foamed polyurethane, foamed polystyrene or the like as a core material of the vacuum insulation material In many cases, the foams have a high risk of shrinkage of the inner cells due to changes over time, and a decrease in internal vacuum due to shrinkage, thereby increasing the thermal conductivity.

In addition, Korean Registered Patent Publication No. 0127092 “Vacuum Insulation for Refrigerator and Manufacturing Method thereof”, Korean Registered Patent Publication No. 10-0298544 “Vacuum Insulation Panel and Manufacturing Method thereof”, Korean Registered Patent Publication No. 10-0646146 “Vacuum Insulation Material” As is known from many, etc., powders of plastic foam, inorganic particulate powders such as silica and expanded perlite, inorganic layered compounds, etc. are made of a nonwoven bag, a polyethylene film, a polypropylene film, an inner layer formed of a thermosetting resin having high gas barrier properties, and the like. In many cases, a vacuum insulation material is manufactured by forming an outer shell material in a sealed state and forming a vacuum, and a vacuum insulation material is necessary. It has a problem that the manufacturing process and the time is prolonged, and the volume of the internal filling decreases due to the impact There is a disadvantage that the efficiency is reduced.

Patent Document 0001 Korean Registered Patent Publication No. 10-0823798 “Refrigerator using vacuum insulation material and vacuum insulation material” Patent Document 0002 Korean Registered Patent Publication No. 10-0823406 “Vacuum insulation material and refrigerator using the same” Patent Document 0003 Korean Laid-Open Patent Publication No. 10-2010-0119939 “Vacuum Insulation and Vacuum Insulation Jacket” Patent Document 0004 Korean Registered Patent Publication 0127092 “Vacuum Insulation for Refrigerator and its Manufacturing Method” Patent Document 0005 Korean Registered Patent Publication No. 10-0298544 “Vacuum Insulation Panel and its Manufacturing Method” Patent Document 0006 Korean Patent Publication No. 10-0646146 “Vacuum Insulation Material”

Accordingly, the present invention is to solve the above problems in manufacturing a vacuum insulator, the present invention is to adhere the expanded perlite using a powdery thermosetting binder, by performing a high temperature heat treatment process additionally by carbonizing the expanded perlite molded body In order to provide an expanded perlite molded article having a low thermal conductivity, a vacuum insulator using the same, and a method of manufacturing the same, a molded article having a high specific surface area and excellent adhesive strength can be manufactured even at a low density and applied to the core of the vacuum insulator. do.

In addition, by providing a molded body composed of inorganic particles, it is possible to solve the problem of the fibrous core material, and to provide a vacuum insulation material that can maintain excellent mechanical properties and thermal conductivity by preventing problems such as reduction of physical properties due to the time-dependent change of the organic foam. Has its purpose.

The expanded perlite molded article according to the present invention is characterized in that it comprises 90 to 10% by weight of expanded perlite and 10 to 90% by weight of the organic curable powder binder.

Vacuum insulation using the expanded perlite molded article according to the present invention is the upper jacket; A lower envelope sealing the upper envelope and the edge portion; And an expanded perlite molded body formed in the middle of the upper envelope and the lower envelope and inserted into an inner space maintaining a vacuum state.

The expanded perlite molded body is characterized in that it comprises 90 to 10% by weight of expanded perlite and 10 to 90% by weight of the organic curing powder binder.

Method for producing an expanded perlite molded article according to the present invention comprises the first step of producing an expanded perlite; A second step of preparing a mixture by mixing 90 to 10% by weight of the expanded perlite prepared in the first step and 10 to 90% by weight of the organic curable powder binder; A third step of compressing the mixture prepared in the second step to form a molded article and first hardening the molded article; And a fourth step of post-curing the first cured molded body in the third step.

Method for producing a vacuum insulation using the expanded perlite molded article according to the present invention comprises the first step of producing an expanded perlite; A second step of preparing a mixture by mixing 90 to 10% by weight of the expanded perlite prepared in the first step and 10 to 90% by weight of the organic curable powder binder; A third step of compressing the mixture prepared in the second step to form a molded article and first hardening the molded article; A fourth step of post-curing the primary cured molded article in the third step to produce an expanded perlite molded article; And a fifth step of manufacturing a vacuum insulation material by inserting the molded article prepared in the fourth step between the upper outer shell material and the lower outer shell material, sealing the edges of the upper outer shell material and the lower outer shell material, and then making the inner space into a vacuum state. It is characterized by including.

According to another preferred feature of the present invention, the fifth step is to seat the molded body prepared in the fourth step between the upper shell and the lower shell agent, and then the three sides of the upper shell and the lower shell is a heat-sealed plate After sealing by using, the upper and lower parts of the upper outer shell and the lower outer shell are connected to a vacuum exhaust pipe and a vacuum is removed by using a vacuum pump to form a vacuum. Heat-sealing, and proceeds in the order of removing the vacuum exhaust pipe.

By means of the above solution, the vacuum insulator of the present invention is the maximum by filling the expanded perlite as close as possible to minimize the gap between the particles and to produce a high-strength molded body with a low compression rate and then to produce a molded body having a high specific surface area through the carbonization process By providing a vacuum insulator having density, excellent mechanical strength and high specific surface area, low thermal conductivity and long-term stability can be ensured.

1 is a cross-sectional view of a vacuum insulator using an expanded perlite molded article according to the present invention.

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

The expanded perlite molded article according to the present invention for achieving the above object comprises 90 to 10% by weight of expanded perlite and 10 to 90% by weight of an organic curable powder binder.

1 is a cross-sectional view of the vacuum insulator using the expanded perlite molded article according to the present invention. As shown in FIG. 1, the vacuum insulator using the expanded perlite molded article according to the present invention includes an upper outer jacket (1) and a lower outer jacket (2). And the above-mentioned expanded perlite molded body 3 as a core material inserted therebetween.

This will be described in detail below. First, the expanded perlite molded body 3 used as the core material will be described.

The expanded perlite is prepared by drying the perlite ore and then expanding it. The perlite ore is at least one selected from perlite, obsidian, pine rock, and pumice. If the expanded perlite is less than 10% by weight, there is a problem that the thermal conductivity is sharply increased, and if it exceeds 90% by weight, there is a problem that the mechanical properties decrease. There is no particular limitation on the shape of the particles of the expanded perlite, but preferably the active ingredient of the closed cell expanded perlite includes 50% by weight or more based on the total weight of the expanded perlite.

The organic curable powder binder may be mixed in an amount of 10 to 90% by weight, preferably 20 to 50% by weight, and less than 10% by weight, it is difficult to secure the adhesive strength. Although it can be secured, problems such as an increase in material cost and thermal conductivity due to the mixing of excess organic materials occur.

The organic curable powder binder may use a phenol novolak resin, but is not particularly limited, and may be a melamine resin, an epoxy resin, or a silicone resin, which is transformed into a powder, and is formed of a polymer through thermal curing to secure mechanical properties. It may include all resins that can be.

Meanwhile, in the present invention, the expanded perlite molded body may further include 0.5 to 50 parts by weight of reinforcing fibers relative to 100 parts by weight of expanded perlite. The reinforcing fiber uses a reinforcing fiber having a length of 0.5 to 100 mm to reinforce the formability, bending strength, and workability of the expanded perlite molded body. There is no particular limitation on the type of reinforcing fibers, and examples of the reinforcing fibers in the present invention include inorganic fibers such as glass fibers, alumina fibers, mineral fibers, zirconia fibers, silica fibers, polyethylene fibers, polyamide fibers, carbon fibers, and the like. Use or mix organic fibers of each. If the reinforcing material is less than 0.5 parts by weight relative to 100 parts by weight of the expanded perlite (hardening of the bending strength is difficult), if more than 50 parts by weight (such as an increase in the material cost and thermal conductivity) occurs.

In addition, a reinforcing agent may be used to increase the strength or further lower the thermal conductivity.

In order to reinforce the strength or to lower the thermal conductivity, fumed silica of less than 50 μm, aerogel, white carbon, carbon, graphite may be mixed, ammonium phosphate, aluminum phosphate, zinc phosphate, boric acid, borax, titanium dioxide, aluminum oxide, zirconium oxide Reinforcing agents such as and the like can be used.

The reinforcing agent may be additionally mixed in an amount of 5 to 200 parts by weight, preferably 10 to 70 parts by weight, based on 100 parts by weight of the organic curable powder binder, and when the reinforcing agent is 5 parts by weight or less, it shows a reduction in thermal decomposition and reinforcement of strength. It is difficult to produce, if more than 200 parts by weight can play a role as a reinforcing agent, but there is a problem that the thermal conductivity rapidly increases.

On the other hand, the upper jacket (1) and the lower jacket (2) is an aluminum film deposited on a plastic sheet, such as polyethylene, polypropylene, polyethylene terephthalate, polycarbonate, wherein the plastic sheet has a thickness of 300 ~ 1000㎛ The aluminum film has a thickness of 30 ~ 60㎛. The upper outer shell and the lower outer shell are sealed at the edges to form an inner space therebetween. In particular, in the present invention, the inner space is maintained in a vacuum state, and an expanded perlite molded body is inserted therein.

Next, the manufacturing method of the expanded perlite molded object by this invention is demonstrated.

Method for producing an expanded perlite molded article according to the present invention comprises the first step of manufacturing expanded perlite by drying and expanding the ore; A second step of preparing a mixture by mixing 90 to 10% by weight of the expanded perlite prepared in the first step and 10 to 90% by weight of the organic curable powder binder; A third step of heating the mixture prepared in the second step to form a molded body and first curing the molded body; And a fourth step of post-curing or carbonizing the primary cured molded body in the third step.

On the other hand, the manufacturing method of the vacuum insulating material using the expanded perlite molded article according to the present invention, that is, a first step of manufacturing expanded perlite by drying and expanding the ore; A second step of preparing a mixture by mixing 90 to 10% by weight of the expanded perlite prepared in the first step and 10 to 90% by weight of the organic curable powder binder; A third step of heating the mixture prepared in the second step to form a molded body and first curing the molded body; A fourth step of post-curing or carbonizing the first cured molded body in the third step; And a fifth step of manufacturing a vacuum insulating material based on the expanded perlite molded body manufactured in the fourth step.

Hereinafter, the manufacturing method of the present invention will be described in detail.

In more detail, the first step of producing expanded perlite, the surface is vitrified when a high temperature flame is encountered in the firing process by using water, which is commonly called crystal water, inside natural minerals such as pearl rock, pine rock, obsidian and pumice stone. The water inside is vaporized and expanded.

In this case, the expansion may be performed using a direct flame method or an indirect flame method, and may be prepared by expanding at a time according to a specific particle size distribution range or by separately expanding each particle size and then mixing them.

The shape of the expanded perlite particles is characterized in accordance with the size of the particles before the expansion and the degree of internal crystallization according to the distribution and degree of drying, wherein the shape of the cell is a needle structure by exploding the surface of the particles with the expansion of moisture in the interior It can be prepared in the form of an open cell of, or a hollow cell having a closed particle surface.

The open cell perlite and the closed cell perlite have a characteristic difference depending on the shape. In the case of the open cell perlite, the inside of the particles is open, and the inside of the particles is also composed of a myriad of cells, which have a large specific surface area and have a gaseous and liquid substance. While closed cell perlite does not have a higher specific surface area than open cells, the closed cell perlite has a high surface breaking strength, a solid outer wall, and has excellent breaking strength and excellent interparticle flow. Accordingly, the closest filling is smooth, and thus, a molded article formed of closed cell perlite has a somewhat better mechanical property than an open cell perlite molded article.

However, this does not mean that the open cell perlite has a disadvantage compared to the closed cell perlite, and may be selectively used depending on the required physical properties and the intended use of the vacuum insulation material to be manufactured in consideration of the specific surface area and the bonding strength. It is also possible to mix closed and open cell perlites.

The second step is a step of mixing the expanded perlite and the organic curable powder binder, the order or method of mixing each component is not particularly limited, characterized in that the mixing in the form of a powder. In this step, reinforcing fibers or reinforcing agents may be further added and mixed.

The third step is a step of forming and primary curing, and can be produced by compression molding.

In more detail, the three steps of molding and primary curing of the mixture, in order to improve the problem of the production of vacuum insulation using the particulate form in the production of a molded body, the production of a molded body using a liquid binder, the density variation of each site and a high compression ratio According to the present invention, there is a problem of increasing density and crushing of particles, and increasing drying time after molding. However, in the present invention, by using a powder thermosetting binder, the density of each part is equalized, and the crushing of particles with low density due to low compression ratio Has the advantage of minimizing and eliminating the drying process.

First of all, the density variation is solved in terms of the flowability of particles when using a conventional liquid inorganic binder (in the case of the flowability expressed herein), since the influence of the frictional force and the angle of repose of the particles and particles is low, so that the position shift is easily performed. While the) is low and constrains on use, the powder curable binder has excellent flowability and can resolve the density variation.

When the liquid binder is mixed with the expanded perlite interface, the viscosity and the surface tension of the expanded perlite particles are increased by the adhesive force and moisture of the binder, and the viscosity and the surface tension increase to produce cohesion between particles.

When the cohesive force is reduced, the flowability decreases, so the closeness is not easy, and when compression molding is performed in a state in which the closeness is not easy, dispersion of the mixture in the mold is not smooth, and thus the molded article produced has a density variation for each part. This may cause problems such as deterioration of the overall adhesive strength.

Therefore, in order to increase the adhesive strength of the entire molded body, the production of the molded body using the liquid binder has to be compressed at a high compression ratio during compression molding. Accordingly, the thermal conductivity is increased by increasing the density, increasing the particle crushing rate, and increasing the density variation of each part. Done.

In addition, since the liquid binder does not have a volume and remains coated on the surface of the expanded perlite, the voids between the particles and the particles cannot be filled during compression molding. In order to do this, a high compression ratio has to be applied, and thus, the fracture of the particles is increased, and the thermal conductivity rapidly increases due to the increase in the density of the molded body due to the increase in the compression ratio.

In order to compensate for the closest filling during the compression molding, vibration may be generated in the mixture to increase the closeness ratio, but the cohesion force between the locations is high, and the closeness due to the vibration does not occur over a certain range. Since a vibrating process is required, productivity becomes worse.

On the other hand, the powder-based thermosetting binder is present in the form of a powder at room temperature, and when raised above a predetermined temperature, the powder-based thermosetting binder is changed into a liquid phase in the powder and has a viscosity, and cures at a specific temperature higher than that to exhibit adhesive strength.

Therefore, when the expanded perlite and the powdery binder are mixed at room temperature, the binder does not have moisture and viscosity, so the perlite has flowability, and smooth discharging can be achieved at the time of injection into the mold, thereby ensuring excellent dispersibility. Therefore, it is possible to apply uniform pressurization during compression, thereby reducing particle crushing rate, minimizing density variation of each part and minimizing porosity, thereby maximizing the strength and hardness of the molded body and excellent thermal conductivity. Even when the vibration is applied, the closeness is smoother even under a short time vibration condition, thereby ensuring excellent physical properties while suppressing a decrease in productivity.

In addition, the powder binder has its own volume, so that the powder binder is located in the voids between the expanded perlite particles, thereby filling the voids, exhibiting sufficient adhesion even at a low compression ratio, and having a very low water content. It is possible to solve the increase in the thermal conductivity due to the residual moisture.

In addition, moisture removal is essential when forming a vacuum for manufacturing a vacuum insulation material, the less moisture content possible in the core material is excellent in vacuum degree, it is advantageous to secure long-term stability to the vacuum. Therefore, the molded article manufactured by using the powder binder has an extremely low moisture content, thereby increasing productivity by reducing the time required for forming a vacuum when manufacturing a vacuum insulation material, and ensuring excellent vacuum and long-term stability.

In addition, the curing temperature of the three steps can be carried out in the range of 80 to 300 ℃, if the curing temperature is less than 80 ℃ or hard curing is required for a long time, if the curing temperature is more than 300 ℃ rapid curing is made Therefore, problems such as a decrease in adhesive strength occur. There is no particular limitation on the compression pressure in the three stages, but preferably 0.1 to 500 Ton / cm ² , and the curing time is preferably 5 seconds to 5 minutes.

In the fourth step, in order to maximize productivity, only the first curing may be performed in the third step and the post-curing may be performed in the fourth step.

In addition, in order to maximize the specific surface area of the core material of the vacuum insulator in the fourth step, the carbonization and activation process may be performed through high-temperature heat treatment during post-curing.

In more detail with respect to the four steps of performing the post-cure or post-cure and heat treatment, the production of expanded perlite insulation using a powder binder can change the manufacturing process in various forms in order to maximize productivity.

First, in order to maximize productivity in the three steps of molding and curing the mixed material, by compression for a short time to a high temperature of 80 ~ 300 ℃ during compression molding, the surface of the molded body is first hardened to support the shape, and in four steps 80 ~ 300 ℃ Post-curing may be performed at a high temperature of to completely cure the primary cured molded body. There is no particular limitation on the curing time in four steps, but it is preferably 1 to 300 minutes.

Accordingly, in order to sufficiently cure during molding, it is possible to secure excellent physical properties while solving a decrease in productivity due to a long heating process being omitted in the mold.

This is a property of the thermosetting powder binder used in the present invention, and the binder is easily melted and cured in a short time according to the temperature rise, and has a specific temperature range in which melting and curing occur, thereby constituting a manufacturing process. When it can be easily configured in the desired form and section, it can be adjusted to various types of manufacturing conditions.

In addition, by adding a carbonization process in addition to the post-curing step in the fourth step, it is possible to maximize the specific surface area and thermal stability at high temperature of the expanded perlite insulation using the curable powder binder, improve mechanical properties and decrease the thermal conductivity, When the inorganic reinforcing agent is added in the preparation of the mixture, lower thermal conductivity and excellent mechanical properties can be obtained.

The heat treatment process may be a carbonization process through high temperature heat treatment and an activation process for activating the carbonized molded body to have a higher specific surface area. At this time, only the post-curing is carried out at 80 ℃ to 300 ℃, while the heat treatment is carried out while raising the temperature range of 80 ℃ to 1100 ℃. The reason for the low temperature to the high temperature is that thermal deformation may occur when directly affected by the high temperature, and the temperature distribution varies depending on the characteristics of the organic powder binder used.

Post-curing conditions can be carried out from the curing conditions of 80 ℃ in order to allow the normal hardening of the temporarily cured molded body to proceed again, and also proceeds to the maximum curing section of 300 ℃. Thereafter, heating is performed up to 1100 ° C. during the carbonization process. When the temperature exceeds 1100 ° C., deformation and strength decrease due to excessive carbonization may occur. Therefore, when only post-curing proceeds, it can rise from 80 degreeC to 300 degreeC, and when performing post-cure and carbonization together, it can raise from 80 degreeC to 1100 degreeC. However, carbonization temperature is possible up to 1100 ℃, and it is used to adjust the temperature below 1100 ℃ according to the actual desired physical properties. In addition, the rate of temperature rise is carried out within a range that does not overdo the process.

The expanded perlite molded body manufactured using the powder binder can minimize the effect of low density and moisture due to the low compression ratio, secure excellent mechanical properties, and secure low thermal conductivity as the specific surface area increases. By maximizing the specific surface area it is possible to obtain a better thermal conductivity.

Accordingly, in the present invention, by performing a carbonization process, the cured thermosetting resin may be carbonized to have a high specific surface area, thereby manufacturing a vacuum insulator core material having a large increase in specific surface area.

In general, the cross-linked structure of the organic cured product has high strength as the bonding chain is subjected to each independent amorphous carbonization process through high temperature heat treatment, and the carbonized binder generates numerous pores on the surface, resulting in a rapid increase in specific surface area. . Thus, by carbonizing the expanded perlite molded article made of the thermosetting powder resin of the present invention, the thermosetting resin layer forming the inter-particle bonds with the expanded perlite particles having low thermal conductivity in an independent cell is carbonized to provide a strong bonding force and a high specific surface area. It is possible to form an independent cell and a bonding layer having a high specific surface area at the same time.

In addition, an activation process can be performed to further maximize the specific surface area. In the activation process, carbon dioxide, which is steam or an inert gas, is introduced after the carbonization process to erode the surface of the molded body to form a microporous structure, thereby increasing the specific surface area. The activation process is carried out in the 600 to 1100 ℃ range.

In addition, in the present invention, an inorganic reinforcing agent can be used. This inorganic reinforcing agent is used for the purpose of strengthening the strength and reducing the thermal conductivity.

The reinforcing agent for reinforcing the strength is divided into a reinforcing agent for increasing the adhesive strength due to the heat melting and the reinforcing agent for increasing the strength by filling the pores of the particles.

In addition, the reinforcing agent to reinforce the strength by filling the particle voids serves to reduce the thermal conductivity at the same time.

A reinforcing agent for the purpose of increasing the adhesive strength by hot melting is present in powder form at room temperature, and melts with an increase in temperature to form a liquid phase, and solidifies at a higher temperature to form a septum.

Therefore, by mixing and molding the expanded perlite, the powdered organic binder, and the meltable inorganic reinforcing agent, the adhesive strength of the organic binder is first secured, and the carbon-carbon bonding of the organic binder is carried out through high temperature heat treatment and the inorganic reinforcing agent By solidifying through the melting process, the inorganic reinforcing agent forms a diaphragm on the surface of the organic cured product of the carbon-carbon bond structure.

As a result, an organic cured product having a carbon-carbon bond structure inside and a composite structure having an inorganic diaphragm having high thermal stability outside forms a high temperature by preventing thermal decomposition that may occur when the structure is changed to a carbon-carbon bond form. Thermal stability is increased, and through the double bonds of carbon-carbon bonds and inorganic melt bonds to enhance the adhesive strength can improve the overall mechanical properties.

The inorganic reinforcing agent for performing adhesion reinforcement through the thermal melting may be boric acid, but is not particularly limited, and phosphorus or boron compounds may be used, and boric acid is an acid compound of ammonium phosphate, aluminum phosphate, zinc phosphate, and boron. It may include all of the phosphorus or boron compounds capable of forming a diaphragm according to high temperature. The inorganic reinforcing agents may be used individually or in combination.

In addition, the inorganic reinforcing agent uses a powder of less than 100㎛ to fill the pores between the expanded perlite particles and particles, and serves to increase the strength and decrease the thermal conductivity or block radiant heat.

The reinforcing agent may use fumed silica, aerogels and white carbon, carbon, graphite, titanium dioxide, aluminum oxide, zirconium oxide. The reinforcing agents may be used individually or in combination.

The reinforcing agents may be mixed 1 to 50% by weight, preferably 5 to 30% by weight based on the total weight%, less than 1% by weight is difficult to show the effect of reducing the thermal conductivity or strength reinforcement, 50% by weight or more The density of the molded article rises, and the adhesion efficiency of the binder decreases due to the increase of the additives, thereby causing a problem of decreasing mechanical properties.

In the present invention, the expanded perlite molded body is manufactured from a vacuum insulation core material, or includes reinforcing fibers having a length of 0.5 to 100 mm in order to reinforce stability in use. Reinforcing fibers are used in combination with inorganic fibers or organic fibers, respectively.

The fifth step is a step of manufacturing a vacuum insulation material using the manufactured expanded perlite molded body as a core.

Referring to the fifth step in more detail, an aluminum film is deposited on a plastic sheet to prepare an upper shell 1 and a lower shell 2. There is no restriction | limiting in particular about the kind of plastic sheet in this invention, As an example of a plastic sheet, polyethylene, polypropylene, polyethylene terephthalate, a polycarbonate, etc. are mentioned.

It is preferable that the thickness of the plastic sheet of the upper shell and the lower shell is 300 ~ 1000㎛, the aluminum film has a thickness of 30 ~ 60㎛. There is no particular limitation on the method of depositing the aluminum film on the plastic sheet, and as an example, the plastic sheet and the aluminum film are laminated and deposited by heating and pressing at a temperature of 50 to 300 ° C. and a pressure of 1 to 30 Kgf / cm 2.

When the thickness of the plastic sheet is 300 μm or less, there is a high risk of vacuum breakage due to damage caused by external impact or scratches. When the thickness of the plastic sheet is 1000 μm or more, it is difficult to manufacture the film, and it is difficult to deposit the aluminum film and the plastic sheet during deposition. There is a problem losing. Similarly, when the thickness of the aluminum film is 30㎛ or less, damage of the film may occur due to external impact, and when 60㎛ or more, many high vacuum degrees are required to realize a shape when forming a vacuum, and heat fusion process between films There is a problem in that heat transfer is delayed due to an increase in thickness, and thus a higher temperature and time are required.

The upper outer shell (1) and the lower outer shell (2) prepared in parallel are placed, and the expanded perlite molded body (3) prepared in the fourth step is seated between the upper and lower outer shell. The molded body is inserted into a shape such as a heat-sealed bag by heating and pressurizing the three surfaces of the positioned upper outer skin and lower outer skin at a temperature of 50 to 300 ° C. and a pressure of 1 to 30 Kgf / cm 2 using a heat-sealed plate. Is manufactured.

Thereafter, the upper and lower portions of the open side of the upper outer shell are connected to the vacuum exhaust pipe, and a vacuum is formed by using a vacuum pump to form a vacuum. When the degree of vacuum rises above a certain level, the other surface is also heat-sealed, and when the vacuum exhaust pipe is removed, the vacuum insulator is completed.

In order to explain in more detail based on the above-mentioned contents, it will be described in detail through the following Examples and Experimental Examples, but these do not limit the scope of the present invention.

Example 1 Preparation of Vacuum Insulator 1 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

100 g of novolac phenolic powder is added to 100 g of expanded perlite and 1.5% by weight of inorganic fiber is added to 1000 g of expanded perlite having a density of 40 kg / m 3 with an open cell ratio of 70% by weight. Was prepared.

The prepared mixture had a density of 72 Kg / m 3, and 583 g of the mixture was compressed to about 1.8 times the initial volume to form a horizontal X vertical X height 300 X 300 X 50 mm (volume 4.5 L). Here, the compression ratio is not artificially adjusted, but is a compression ratio that is generated when the mixture is put into a molded mold heated to 200 ° C. in a volume of 4.5 L based on the bulk volume, and the following Examples and Comparative Examples are also the same. )

At this time, the compacted molded body was heated at 200 ° C. for 1 minute to be primarily cured and then demolded, and then expanded in a 200 ° C. hot air dryer for 1 hour to prepare an expanded perlite molded body having a density of 130 ± 5 Kg / m 3.

The prepared molded article was placed between the upper and lower envelopes having a size of 420 × 420 mm composed of 400 μm thick deposited with polyethylene and an aluminum film, and sealed under vacuum to prepare a vacuum insulator 1.

Example 2 Preparation of Vacuum Insulator 2 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

A mixture was prepared by mixing 100% by weight of novolak phenol powder with respect to the weight of expanded perlite in 1000 g of expanded perlite having a density of 40 kg / m 3 having an open cell ratio of 70% by weight.

The prepared mixture had a density of 72 Kg / m 3, and 583 g of the mixture was compressed to about 1.8 times the initial volume to form a horizontal X vertical X height 300 X 300 X 50 mm (volume 4.5 L).

At this time, the compacted molded body was heated at 200 ° C. for 1 minute to be primarily cured and then demolded, and then expanded in a 200 ° C. hot air dryer for 1 hour to prepare an expanded perlite molded body having a density of 130 ± 5 Kg / m 3.

The prepared molded article was placed between the upper and lower envelopes having a size of 420 × 420 mm composed of 400 μm thick deposited with polyethylene and an aluminum film, and sealed under vacuum to prepare a vacuum insulator 2.

Example 3 Preparation of Vacuum Insulator 3 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

583 g of the mixture prepared in Example 1 was compressed to about 1.8 times the initial volume and molded into a size of 300 × 300 × 50 mm (volume 4.5L).

The compacted molded body was heated at 200 ° C. for 1 hour to proceed to safety hardening to prepare an expanded perlite molded body having a density of 130 ± 5 Kg / m 3.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 3.

Example 4 Manufacture of vacuum insulation material 4 using the expanded perlite and organic curable powder binder of the present invention

In 1000 g of the open cell expanded perlite having a density of 40 Kg / m 3 prepared in Example 1, a modified melamine powder resin was mixed with 100 wt% of the expanded perlite and 1.5 wt% of the inorganic fiber with respect to the expanded perlite. .

583 g of the prepared mixture was compressed to about 1.8 times the initial volume and molded into 300 × 300 × 50 mm (volume 4.5L).

The compacted molded body was heated at 200 ° C. for 1 minute to be primarily cured and demolded, and then cured for 1 hour in a 200 ° C. hot air dryer to prepare an expanded perlite molded body having a density of 125 ± 5 Kg / m 3.

The prepared molded article was placed between the upper and lower outer jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 4.

Example 5 Preparation of Vacuum Insulator 5 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

100 g of novolak phenol powder is added to 1000 g of expanded perlite and 1.5% by weight of inorganic fiber is added to 1000 g of expanded perlite having a density of 30 kg / m 3 with a closed cell ratio of 70% by weight. Was prepared

The density of the prepared mixture was 65Kg / ㎥, 527g of the mixture was compressed to about 1.8 times the initial volume was molded into a size X horizontal X height X height 300X300X50mm (volume 4.5L).

The compacted molded body was heated at 200 ° C. for 1 minute to be primarily cured and then demolded, and then expanded in a 200 ° C. hot air dryer for 1 hour to prepare an expanded perlite molded body having a density of 115 ± 5 Kg / m 3.

The prepared molded article was placed between the upper and lower outer shells having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 5.

Example 6 Preparation of Vacuum Insulator 6 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

527 g of the mixture prepared in Example 4 was compressed to about 1.8 times the initial volume and molded into a size of 300 × 300 × 50 mm (volume 4.5L).

The compacted molded body was heated at 200 ° C. for 1 hour to proceed to safety hardening to prepare an expanded perlite molded body having a density of 115 ± 5 Kg / m 3.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 6.

Example 7 Preparation of Vacuum Insulator 7 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

An expanded perlite having 50 wt% closed cell expanded perlite and 50 wt% open cell expanded perlite was prepared, and the density of the mixed perlite was 35 Kg / m 3.

The mixed material was prepared by mixing 100% by weight of the novolak phenol powder with respect to the weight of the expanded perlite and 1.5% by weight of the inorganic fiber with respect to the weight of the expanded perlite in 1000g of the mixed expanded perlite.

The density of the prepared mixture was 70Kg / ㎥, 567g of the mixture was compressed to about 1.8 times the initial volume was molded into a size X horizontal X height X height 300X300X50mm (volume 4.5L).

The compacted molded body was heated at 200 ° C. for 1 minute to be primarily cured and then demolded, and then expanded in a 200 ° C. hot air dryer for 1 hour to prepare an expanded perlite molded body having a density of 120 ± 5 Kg / m 3.

The prepared molded article was placed between the upper and lower outer jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 7.

Example 8 Preparation of Vacuum Insulator 8 Using Expanded Perlite and Organic Curable Powder Binder of the Present Invention

As in Example 1, an expanded cell-type expanded perlite having a density of 40 Kg / m 3 was prepared.

In the open cell expansion perlite 1000g prepared, the novolak phenolic powder is 95% by weight based on the weight of the expanded perlite, the fume silica powder is 5% by weight based on the weight of the expanded perlite as the strength enhancer, titanium dioxide is 5% by weight, based on the weight of the inorganic ferrite. 1.5 wt% of the expanded perlite was added to the mixture to prepare a mixed material.

The prepared mixture had a density of 72 Kg / m 3, and 583 g of the mixture was compressed to about 1.8 times the initial volume and molded into 300 × 300 × 50 mm (volume 4.5L).

The compacted molded body was heated at 200 ° C. for 1 minute to be primarily cured and then demolded, and then expanded in a 200 ° C. hot air dryer for 1 hour to prepare an expanded perlite molded body having a density of 130 ± 5 Kg / m 3.

The prepared molded product was put between the upper and lower outer shells having a size of 420 × 420 mm, and sealed in a vacuum state to prepare a vacuum insulator 8.

Example 9 Preparation of Vacuum Insulator 9 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

An expanded perlite in the form of a closed cell having a density of 30 Kg / m 3 was prepared as in Example 4.

In the closed cell expansion perlite 1000g prepared, the novolak phenolic powder was expanded by 95% by weight based on the weight of the expanded perlite, the fumed silica powder by the strength enhancer 5% by weight, based on the weight of the expanded perlite, and the titanium dioxide was 5% by weight, based on the inorganic fiber. 1.5 wt% of the expanded perlite was added to the mixture to prepare a mixed material.

The prepared mixture had a density of 65 Kg / m 3, and 527 g of the mixture was compressed to about 1.8 times its initial volume and molded into 300 × 300 × 50 mm (volume 4.5L).

The compacted molded body was heated at 200 ° C. for 1 minute to be primarily cured and then demolded, and then expanded in a 200 ° C. hot air dryer for 1 hour to prepare an expanded perlite molded body having a density of 120 ± 5 Kg / m 3.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 9.

Example 10 Preparation of Vacuum Insulator 9 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

In the same manner as in Example 1, each component ratio was mixed and molded, but the compacted molded body was heated at 200 ° C. for 1 minute to be primarily cured and demolded, and the demolded molded body was heated to 200 ° C. to 500 ° C. for 1 hour. After maintaining for 1 hour at 500 ℃ natural cooling over 30 minutes to perform post-cure and carbonization.

At this time, the surface temperature of the molded body was a temperature range from room temperature to 50 ℃, through which an expanded perlite molded body having a density of 120 ± 5 Kg / ㎥ was prepared.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 10.

Example 11 Preparation of Vacuum Insulator 11 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

Mix each component ratio in the same manner as in Example 1, but mix the boric acid with an inorganic reinforcing agent 20% by weight relative to the weight of the expanded perlite, and the first compacted by heating the molded article at the same magnification as in Example 1 at 200 ℃ for 1 minute After demolding, the temperature was raised from 200 ° C. to 500 ° C. over 1 hour, maintained at 500 ° C. for 1 hour, and then naturally cooled over 30 minutes to effect post curing and carbonization.

At this time, the surface temperature of the molded body was a temperature range from room temperature to 50 ℃, through which an expanded perlite molded body having a density 130 ± 5 Kg / ㎥ was prepared.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 11.

Example 12 Preparation of Vacuum Insulator 12 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

In the same manner as in Example 4, each component ratio was mixed using a closed cell expanded perlite, but 20 parts by weight of boric acid was added to the weight of the expanded perlite as an inorganic reinforcing agent, and the compacted body was compressed at the same magnification as in Example 1 at 200 ° C. After heating for 1 minute, the first curing was performed, demolding was performed, the temperature was raised from 200 ° C to 500 ° C over 1 hour, the temperature was maintained at 500 ° C for 1 hour, and then naturally cooled over 30 minutes to carry out post curing and carbonization.

At this time, the surface temperature of the molded body was a temperature range from room temperature to 50 ℃, through which an expanded perlite molded body having a density of 120 ± 5 Kg / ㎥ was prepared.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 12.

Example 13 Preparation of Vacuum Insulator 13 Using Expanded Perlite and Organic Curing Powder Binder of the Present Invention

As in Example 1, an expanded cell-type expanded perlite having a density of 40 Kg / m 3 was prepared.

In the open cell expansion perlite 1000g prepared, the novolak phenol powder is 95% by weight based on the weight of the expanded perlite, the fume silica powder is 5% by weight based on the weight of the expanded perlite, and the boric acid is 20% by weight, based on the titanium dioxide. 5% by weight relative to the weight of the expanded perlite and 1.5% by weight of inorganic fibers relative to the weight of the expanded perlite were mixed to prepare a mixture.

The prepared mixture had a density of 72 Kg / m 3, and 583 g of the mixture was compressed to about 1.8 times the initial volume and molded into 300 × 300 × 50 mm (volume 4.5L).

The compressed compact was heated at 200 ° C. for 1 minute to be primarily cured and then demolded, heated to 200 ° C. to 500 ° C. over 1 hour, maintained at 500 ° C. for 1 hour, and then naturally cooled over 30 minutes. Curing and carbonization were carried out.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 13.

Example 14 Preparation of Vacuum Insulator 14 Using Expanded Perlite and Organic Curable Powder Binder of the Present Invention

In the same manner as in Example 12, a molded product prepared by carbonization was activated by treatment with saturated water vapor at 600 ° C. for 1 hour in a steam atmosphere, and the prepared molded product was placed between the upper and lower envelopes having a size of 420 × 420 mm, and vacuumed. It sealed in the state and manufactured the vacuum heat insulating material 14.

Example 15 Manufacture of Insulation Material 15 Using Expanded Perlite and Organic Curable Powder Binder of the Present Invention

A molded article was prepared in the same manner as in Example 12, except that the molded article was manufactured using a closed cell expansion perlite, and the carbonized product was carbonized and then activated under saturated steam for 1 hour at 600 ° C. in a steam atmosphere. The molded body was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 15.

<Comparative Example 1> Preparation of the heat insulating material 16 using the expanded perlite of the present invention and sodium silicate which is an inorganic liquid binder

An open cell expanded perlite having a density of 40 kg / m 3 having an open cell ratio of 70 wt% to the total weight was prepared, and after mixing 433 g of the expanded perlite and 413 g of 33 Be 'sodium silicate, an inorganic liquid binder, an initial volume of about 3.2 times was compressed to prepare a molded body having a size of 300X300X50mm, and dried in a 200 ℃ hot air dryer for 4 hours to prepare an expanded perlite molded body having a density of 145 ± 5 Kg / ㎥.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 16.

<Comparative Example 2> Preparation of the heat insulating material 17 using the expanded perlite of the present invention and sodium silicate which is an inorganic liquid binder

An open cell expansion perlite having a density of 30 kg / m 3 having a closed cell ratio of 70% by weight based on the total weight was prepared, and after mixing 325 g of the expanded perlite and 413 g of 33 Be 'sodium silicate, an inorganic liquid binder, an initial volume of about 3.2 times was compressed to prepare a molded body having a size of 300X300X50mm, and dried for 4 hours in a 200 ℃ hot air dryer to prepare an expanded perlite molded body having a density of 135 ± 5 Kg / ㎥.

The prepared molded article was placed between the upper and lower jackets having a size of 420 × 420 mm, and sealed under vacuum to prepare a vacuum insulator 17.

Experimental Example 1 Characterization of Expanded Perlite Insulation

The flexural strength and the surface area of the molded article produced by the method of the embodiment was measured, and the thermal conductivity of the vacuum insulation material manufactured using the molded article was measured in Table 1 below.

division Flexural Strength (N / ㎠) Specific surface area (m &lt; 2 &gt; / g) Thermal Conductivity (W / mK) (20 ℃) Example 1 36.4 12 0.0068 Example 2 35.4 12 0.0067 Example 3 37.8 13 0.0064 Example 4 36.1 14 0.0064 Example 5 47.3 7 0.0071 Example 6 48.1 9 0.0069 Example 7 40.8 11 00069 Example 8 42.2 32 0.0062 Example 9 50.1 26 0.0064 Example 10 31.3 443 0.0049 Example 11 38.8 430 0.0050 Example 12 40.4 360 0.0052 Example 13 39.5 460 0.0046 Example 14 38.8 950 0.0039 Example 15 41.6 840 0.0041 Comparative Example 1 30.8 8 0.0159 Comparative Example 2 32.2 5 0.0165

As shown in Table 1, Examples 1 to 9 of the present invention prepared using the expanded perlite and the powder-type organic binder, despite the low density compared to Comparative Examples 1 to 2 using an inorganic liquid binder, the flexural strength It was measured higher than 20%.

In the thermal conductivity of the vacuum insulator, the thermal conductivity was lower than 50%.

This indicates that a molded article having a high strength can be produced even at a low compression ratio, and the density of the heat insulating material is lowered according to the low compression ratio, indicating that the thermal conductivity is further suppressed, thereby lowering the thermal conductivity. In addition, since excessive compaction is prevented, the particles are prevented from breaking, thereby increasing the thermal insulation efficiency.

Examples 1 and 5 and 3 and 6, which performed only the primary curing in the three steps of compression and molding and the post-cure in the fourth step, showed the similar flexural strength and thermal conductivity.

This indicates that in the case of an expanded perlite heat insulating material using a curable powder binder, excellent physical properties can be secured even if the manufacturing method is changed depending on the form, use, and productivity to be manufactured.

Looking at the results of Examples 1, 4, and 7 in which the ratio of closed cell to open cell expansion perlite is 7: 3, 5: 5, and 3: 7, respectively, the higher the open cell expansion perlite ratio, the lower the flexural strength, but the specific surface area. Increased and showed low thermal conductivity.

This means that as the ratio of open cell expanded perlite increases, the specific surface area of the particles increases, and when the same binder is used, the adhesion efficiency decreases, resulting in low flexural strength, but the thermal insulation efficiency of the vacuum insulation material increases according to the high specific surface area.

Therefore, it can be selectively used according to the use environment of the vacuum insulation and the required bending strength and thermal conductivity.

In addition, Examples 8 and 9 prepared with the strength reinforcing agent showed higher flexural strength and lower thermal conductivity compared to Examples 1 to 7, which did not include the reinforcing agent, and the intergranular pores were formed by the reinforcing agent having a low thermal conductivity and an extremely fine particle size. Filled, exhibiting high specific surface area and flexural strength.

Example 10 in which the prepared molded product was carbonized showed lower flexural strength than those in Examples 1 to 9 which were not carbonized, but the specific surface area was greatly increased, and the thermal conductivity was decreased.

This is because the cross-linking structure of the organic binder is replaced with the carbon structure of the binder through carbonization, so that the specific surface area is increased and the heat insulation efficiency is increased, but the collapse of the structure occurs in the carbonization process, resulting in a decrease in flexural strength.

Accordingly, Examples 11 to 13 carbonized with an inorganic reinforcing agent exhibited excellent flexural strength while securing a thermal conductivity similar to that of Example 10.

Through this, it can be seen that by mixing the inorganic reinforcing agent, it is possible to suppress the collapse of the structure that can occur in the carbonization process.

In addition, it can be seen that Examples 14 to 15, which activated the carbonized molded body, exhibited lower thermal conductivity than those of Examples 1 to 13, which were not carried out. This is because water vapor forms extremely fine cells on the carbonized surface. The surface area is rapidly widened, which leads to a decrease in thermal conductivity of the vacuum insulator.

Although the above embodiments and experimental examples, in particular structural forms and the like have been described, which are not intended to limit the scope thereof, and those skilled in the art to which the present invention pertains may be modified without departing from the principles of the present invention. It can be seen that.

1: Upper shell
2: lower skin
3: heartwood

Claims (28)

Expanded perlite comprising 90 to 10% by weight of the expanded perlite and 10 to 90% by weight of the organic curable powder binder, wherein the active component of the closed cell expanded perlite of the expanded perlite is included in an amount of 50% by weight or more based on the total weight of the expanded perlite. Molded body. The expanded perlite molded article according to claim 1, wherein the expanded perlite molded article further comprises 0.5 to 50 parts by weight of reinforcing fibers with respect to 100 parts by weight of expanded perlite. The expanded perlite molded article according to claim 1, wherein the expanded perlite molded article further comprises 5 to 200 parts by weight of a reinforcing agent based on 100 parts by weight of the organic curable powder binder. Upper envelope;
A lower envelope sealing the upper envelope and the edge portion; And
An expanded perlite molded body formed between the upper envelope and the lower envelope and inserted into an inner space maintaining a vacuum state,
The expanded perlite molded body is a vacuum insulator using the expanded perlite molded body, characterized in that it comprises 90 to 10% by weight of expanded perlite and 10 to 90% by weight of an organic curable powder binder. The vacuum insulator using the expanded perlite molded body according to claim 4, wherein the expanded perlite molded body further comprises 0.5 to 50 parts by weight of reinforcing fibers with respect to 100 parts by weight of expanded perlite. The vacuum insulator using the expanded perlite molded body according to claim 4, wherein the expanded perlite molded body further includes 5 to 200 parts by weight of a reinforcing agent based on 100 parts by weight of the organic-based curable powder binder. The method of claim 4, wherein
The active ingredient of the closed cell expansion perlite of the expanded perlite is a vacuum insulator using an expanded perlite molded body, characterized in that it comprises at least 50% by weight based on the total weight of the expanded perlite. 5. The method of claim 4,
The organic curable powder binder is a vacuum insulator using an expanded perlite molded body, characterized in that at least one selected from a novolak phenol resin or a melamine resin, epoxy resin, or silicone resin modified in powder form. 6. The method of claim 5,
The reinforcing fiber is a vacuum insulation using an expanded perlite molded body, characterized in that at least one selected from glass fibers, alumina fibers, mineral fibers, zirconia fibers, silica fibers, polyethylene fibers, polyamide fibers, carbon fibers. The method of claim 6, wherein
The reinforcing agent is an expanded perlite molded body characterized in that at least one selected from ammonium phosphate, aluminum phosphate, zinc phosphate, boric acid, boron, borax, fumed silica, aerogel, white carbon, carbon, graphite, titanium dioxide, aluminum oxide, zirconium oxide. Vacuum insulation material using. The vacuum insulator using the expanded perlite molded body according to claim 4, wherein the upper jacket and the lower jacket are aluminum films deposited on a plastic sheet including polyethylene, polyethylene terephthalate, and polycarbonate. A first step of preparing expanded perlite but including 50% by weight or more of the active ingredient of the closed cell expanded perlite based on the total weight of the expanded perlite;
A second step of preparing a mixture by mixing 90 to 10% by weight of the expanded perlite prepared in the first step and 10 to 90% by weight of the organic curable powder binder;
A third step of compressing the mixture prepared in the second step to form a molded article and first hardening the molded article; And
And a fourth step of post-curing the first cured molded body in the third step. A first step of preparing expanded perlite;
A second step of preparing a mixture by mixing 90 to 10% by weight of the expanded perlite prepared in the first step and 10 to 90% by weight of the organic curable powder binder;
A third step of compressing the mixture prepared in the second step to form a molded article and first hardening the molded article;
A fourth step of post-curing the primary cured molded article in the third step to produce an expanded perlite molded article; And
And a fifth step of manufacturing a vacuum insulation material by inserting the molded article prepared in the fourth step between the upper outer shell material and the lower outer shell material, sealing the edges of the upper outer shell material and the lower outer shell material, and then making the inner space into a vacuum state. Method for producing a vacuum insulator using an expanded perlite molded body characterized in that. The method of claim 13,
When manufacturing the expanded perlite of the first step, the expanded perlite molded body characterized in that it is produced by one selected from the method of manufacturing by expanding at a time according to a certain particle size distribution range or by separately expanding and then mixing them by particle size. Method of manufacturing a vacuum insulator using. The method of claim 13,
The method of manufacturing a vacuum insulator using an expanded perlite molded body, characterized in that when the expanded perlite of the first step, the expanded perlite expanded to at least one selected from the direct flame method or indirect flame method. The method of claim 13,
In the manufacturing of the molded article of the third step, the method of manufacturing a vacuum insulator using the expanded perlite molded body, characterized in that the third step after the method of giving the mixture of the second step is subjected to the closest filling method by vibrating or impacting. The method of claim 13,
In preparing the mixture of the second step, the organic curable powder binder is a novolak phenol resin or a melamine resin modified in the form of powder, epoxy resin, silicone resin, characterized in that the production of vacuum insulation using an expanded perlite molded body, characterized in that Way. delete The method of claim 13,
When preparing the mixture of the second step, a method for producing a vacuum insulator using an expanded perlite molded body, characterized in that it further comprises a reinforcing agent in a ratio of 5 to 200 parts by weight based on 100 parts by weight of the organic curable powder binder. The method of claim 19
As the reinforcing agent, at least one selected from ammonium phosphate, aluminum phosphate, zinc phosphate, boric acid, boron, borax, fumed silica, aerogel, white carbon, carbon, graphite, titanium dioxide, aluminum oxide, and zirconium oxide is used. Method for producing a vacuum insulator using an expanded perlite molded body. The method of claim 13,
In the preparation of the mixture of the second step, the method of producing a vacuum insulator using expanded perlite molded body, characterized in that it further comprises 0.5 to 50 parts by weight of reinforcing fibers with respect to 100 parts by weight of expanded perlite. The method of claim 13,
Method of manufacturing a vacuum insulator using expanded perlite molded body, characterized in that during the curing of the third step, performing primary curing at a temperature in the range of 80 to 300 ℃. The method of claim 13,
When the post-cure of the fourth step, the post-curing at a temperature in the range of 80 to 300 ℃ to produce a vacuum insulator using an expanded perlite molded body, characterized in that. The method of claim 13,
The post-curing of the fourth step, the method of manufacturing a vacuum insulator using an expanded perlite molded body, characterized in that for performing additional heat treatment. 25. The method of claim 24,
The heat treatment is a method of manufacturing a vacuum insulator using an expanded perlite molded body, characterized in that the carbonization is carried out at a temperature in the range of 80 to 1100 ℃. 26. The method of claim 25,
After the carbonization, the method of producing a vacuum insulator using an expanded perlite molded body, characterized in that for further performing an activation process for introducing steam or carbon dioxide. The method of claim 13,
In the fifth step, the molded article prepared in the fourth step is seated between the upper outer shell and the lower outer shell, and then the three surfaces of the upper outer shell and the lower outer shell are sealed using a heat-sealing plate, and then the upper outer shell In order to connect the upper and lower parts of the open side of the product and the lower envelope with a vacuum exhaust pipe and remove the air using a vacuum pump to form a vacuum, and when the degree of vacuum rises, the other side is heat-sealed and the vacuum exhaust pipe is removed. Method for producing a vacuum insulator using an expanded perlite molded body characterized in that the progress. The method of claim 21,
When preparing the mixture of the second step, the reinforcing fibers are expanded perlite, characterized in that at least one selected from glass fibers, alumina fibers, mineral fibers, zirconia fibers, silica fibers, polyethylene fibers, polyamide fibers, carbon fibers Method for producing a vacuum insulator using a molded article.

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