KR101373210B1 - Insulation sheet, insulaton sheet produciton system and method for producting insulation sheet including aerogel powder - Google Patents

Abstract

The present invention provides heat insulation, heat resistance and light weight, the thickness control is flexible and flexible so that not only the adhesion of a large area, but also an insulation sheet containing airgel powder that can be usefully used in various types of products requiring heat insulation Introduces the manufacturing system and manufacturing method of the insulating sheet. The insulation sheet is coated on a release paper, and the insulation polymer layer 85 to 95% by weight and the airgel powder 5-15% by weight of the mixture comprises a heat insulation sheet layer having a thickness of 5mm or less.

Description

Insulation sheet, insulaton sheet produciton system and method for producting insulation sheet including aerogel powder}

The present invention relates to an insulating sheet using an airgel powder as an insulating filler, and more particularly, to an insulating sheet obtained by applying a mixture of an acrylic polymer resin and an airgel powder to a release paper, and a method for manufacturing the system sheet of the insulating sheet.

Heat insulating material is a material to reduce the heat loss or heat inflow to the outside by covering the outside of the part to maintain a constant temperature.Insulating material of 100 ℃ or less, 100 ~ 500 ℃ It is divided into a heat insulating material, a heat insulating material of 500 to 1,100 ° C., and a fireproof heat insulating material of 1,100 ° C. or more, and is made porous to reduce thermal conductivity. The heat insulating material preferably has a low thermal conductivity of the material itself, but in most cases, the thermal conductivity is not so small. Therefore, in order to reduce the thermal conductivity to make the porous to take advantage of the thermal insulation of the air in the pores.

Due to its performance and shape, the conventional heat insulating material has many limitations even if it is intended to use an inorganic heat insulating material such as glass wool or an organic heat insulating material such as polyurethane foam in a condition where the size of the electronics is small and the heat insulating space is narrow. there was. For pipes such as water supply pipes, coating type insulation materials such as heat insulation paints are applied due to shape or material problems, and thickness control and workability are limited.

The technical problem to be solved by the present invention, by providing heat insulation, heat resistance and light weight, can be used in various forms of products that require heat insulation, as well as the adhesion of a large area can be adjusted in thickness and flexible It is to provide an insulating sheet containing airgel powder.

Another technical problem to be solved by the present invention, by providing heat insulation, heat resistance and light weight, can be used in various types of products that require heat insulation, as well as large-area adhesion, because the thickness is adjustable and flexible. The present invention provides an insulation sheet manufacturing system containing an airgel powder.

Another technical problem to be solved by the present invention, by providing heat insulation, heat resistance and light weight, the thickness can be adjusted and flexible to be useful in various types of products that require heat insulation, as well as adhesion of a large area An object of the present invention is to provide an insulating sheet containing airgel powder.

Insulation sheet containing the airgel powder according to the present invention for achieving the above technical problem, is coated on a release paper, having a thickness of 5mm by mixing 85 to 95% by weight of the acrylic polymer resin and 5 to 15% by weight of the airgel powder And an insulating sheet layer.

Insulation sheet manufacturing system containing the airgel powder according to the present invention for achieving the above another technical problem is provided with a material supply part, a supply roll, a heat treatment and a transfer part, a drying part and a recovery roll. The material supply unit supplies at least one of a mixture of an acrylic polymer resin and an acrylic polymer resin and an airgel powder. Release paper is wound around the feed roll. The heat treatment and the transfer unit apply the material supplied from the material supply unit to the release paper transferred from the supply roll. The drying unit dries the release paper having undergone the heat treatment and conveying unit. The recovery roll recovers the release paper having passed through the drying part.

In order to achieve the above another technical problem, the airgel powder-containing insulation sheet manufacturing method according to the present invention includes a mixture generation step, a mixture application step, and a thermal insulation sheet generation step. The mixture generating step generates a mixture of the acrylic polymer resin and the airgel powder. The mixture applying step is to apply the mixture to the release paper. In the insulating sheet generating step, the release paper is dried to form an insulating sheet layer.

Since the heat insulation sheet according to the present invention can not only control the thickness but also have flexibility, the product requiring large-area adhesion such as general electronic products and plasma display panels, as well as water pipes, drain pipes, pipes of vent pipes, and ducts of warmers And it can be used for the purpose of thermal insulation, such as thermos, there is an advantage.

Since the heat insulating sheet according to the present invention is molded integrally with the tape substrate and the heat insulating material, the process is simple, quick and easy to perform, and as a result, the manufacturing cost and the construction cost can be reduced, resulting in a competitive price of the product. There is an advantage to improve.

1 shows a manufacturing system of a heat insulating sheet containing an airgel powder according to the present invention.
Figure 2 is an example of the appearance photo of the insulating sheet according to the present invention.
Figure 3 is another example of the outline photo of the insulating sheet according to the present invention.
Figure 4 shows a cross section of the insulating sheet according to the present invention.

In order to fully understand the present invention and the operational advantages of the present invention and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings, which are provided for explaining exemplary embodiments of the present invention, and the contents of the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 shows a manufacturing system of a heat insulating sheet containing an airgel powder according to the present invention.

Referring to Figure 1, the insulating sheet manufacturing system 100 containing the airgel powder according to the present invention, the material supply unit 110, the supply roll 140, the heat treatment and transfer unit 150, the drying unit 160 and The recovery roll 170 is provided.

The material supply unit 100 supplies at least one of a mixture of an acrylic polymer resin, an acrylic polymer resin, and an airgel powder. The release roll is wound around the supply roll 140. The adiabatic treatment and transfer unit 150 applies the material supplied from the material supply unit 110 to the release paper transferred from the supply roll 140, the movement of the release paper is implemented by the roller 180. The drying unit 160 dries the release paper that has undergone the heat treatment and transfer unit 150. The recovery roll 170 recovers the release paper that has passed through the drying unit 160.

Here, the release paper is paper or polypropylene-based vinyl coated with a release agent on the surface. Release agent refers to a substance that is added to the material during molding or applied to the mold itself in order to easily separate a molded product such as a mold from the mold.

The insulation sheet containing the airgel powder according to the present invention is a mixture of 75 to 95% by weight of the acrylic polymer resin and 5 to 15% by weight of the airgel powder means that the insulation sheet layer having a thickness of 5 mm is applied to the release paper. It is preferable that acrylic polymer resin is water-soluble here, and it is preferable that an airgel powder is 1-100 micrometers in size, and 0.03-0.15 g / cm <3> in specific gravity. When the acrylic polymer resin is water-soluble, damage to the airgel hydrophobic voids can be prevented. In particular, when using a hydrophobic airgel powder, it is possible to further enhance the characteristics of excellent waterproof and light weight.

The material supply unit 110 includes a first supply unit 120 and a second supply unit 130.

The first supply unit 120 includes a first material reservoir 121 for supplying an acrylic polymer resin, a first supply 122 for distributing and supplying the material supplied from the first material reservoir 121 to the surface of the release paper; It is provided with a thickness adjuster 123 that can adjust the thickness of the release paper.

In the mixing tank 133 and the mixing tank 133, the second supply unit 130 mixes the acrylic polymer resin supplied from the second material reservoir 131 and the airgel powder supplied from the third material reservoir 132. And a second feeder 134 for distributing and supplying the resulting mixture to the surface of the release paper, and a thickness adjuster 135 for adjusting the thickness of the release paper.

In FIG. 1, the thickness regulators 123 and 135 are respectively provided in the first supply unit 120 and the second supply unit 130, but may be installed only in one place, and in this case, the second supply unit 130 may be installed. It would be desirable to. Here, the first supply unit 120 and the second supply unit 130 are continuously installed, the first supply unit 120 is installed close to the supply roll 140 and the second supply unit 130 is in the drying unit 160 Are installed closely.

Although not shown in detail in FIG. 1, it is preferable to provide a guide for preventing the outflow of the mixture of the acrylic polymer resin and the mixture of the acrylic polymer resin and the airgel powder which flowed out of the release paper to be transported and collecting them.

Insulation sheet according to the present invention is effective only by the insulation sheet layer applied to the release paper. In order to produce such a heat insulating sheet, only the second supply part 130 is operated in the heat insulating sheet manufacturing system 100 containing the airgel powder shown in FIG. 1, and only the heat insulating sheet layer is applied to the release paper.

As described above, the insulating sheet containing the airgel powder may be used only as the insulating sheet layer coated on the release paper, but further includes an adhesive sheet layer formed between the release paper and the insulating sheet layer and coated with an acrylic polymer resin. You can do that. In this case, the pressure sensitive adhesive sheet layer plays a leading role in flexibility and adhesion, and the heat insulating sheet layer has a heat insulating role because airgel powder is included as a heat insulating filler. In order to produce such a thermal insulation sheet in the thermal insulation sheet manufacturing system 110 containing the airgel powder shown in Figure 1 by operating both the first supply unit 120 and the second supply unit 130 on the release paper to the adhesive sheet layer and The insulating sheet layer may be applied sequentially.

Here, the acrylic polymer resin used to form the insulation sheet layer containing the airgel powder and the acrylic polymer resin used to form the adhesive sheet layer are the same.

In the present invention, the size of the airgel powder is proposed to be about 0.1 ~ 100㎛, which is smaller than the size of the airgel powder 0.1㎛ the porosity of the nano-size realized through the airgel network structure is reduced heat insulation effect Because it can be incomplete. In addition, when the size of the airgel powder exceeds 100㎛, it is not preferable because the particles are too large, the surface may not be evenly coated in the case of thin coating film.

As the airgel powder, silica airgel powder may be used, and airgel powder having a hydrophobized surface may be used.

As for the weight% ratio of the acrylic polymer resin and airgel powder contained in a heat insulation sheet, 85-95: 5-15 are suitable. If the airgel powder is less than 5% by weight it is difficult to express the thermal insulation of the insulating sheet layer, and if it exceeds 15%, the adhesiveness of the insulating sheet layer is lowered and cracking may occur after curing and drying.

The thickness of the thermal insulation sheet according to the present invention is 5mm is suitable, which is a disadvantage that the longer the drying and curing time in the case of the polymer resin mixture, the thicker the surface, when the drying treatment at a relatively high temperature to improve the production speed This is because only the problem of being dried occurs. If you want a thicker sheet, you can stack several sheets.

Figure 2 is an example of the appearance photo of the insulating sheet according to the present invention.

Figure 3 is another example of the outline photo of the insulating sheet according to the present invention.

2 and 3 will be understood by those of ordinary skill in the art without describing the photograph.

Figure 4 shows a cross section of the insulating sheet according to the present invention.

Referring to FIG. 4, a lower adhesive layer (first sheet layer) and an upper insulating layer (an insulating sheet layer and a second sheet layer) are shown on the left side of FIG. 4, and on the right side of the upper insulating sheet layer. Shows the included airgel particles.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

110: material supply unit 120: first supply unit
130: second supply unit 140: supply roll
150: heat insulation and transfer unit 160: drying unit
170: recovery roll 180: roller

Claims (17)

Applied to release paper, 85 ~ 95% by weight of water-soluble acrylic polymer resin and 5 ~ 15% by weight of hydrophobic airgel powder with specific gravity of 0.03 ~ 0.15g / cm3 with specific gravity of heat insulating sheet having a thickness of 5mm Including a layer, the insulating sheet containing an airgel powder, characterized in that formed between the release paper and the insulating sheet layer further comprises an adhesive sheet layer coated with an acrylic polymer resin. delete delete delete delete According to claim 1, The release paper,
Insulation sheet containing aerogel powder, characterized in that the surface is coated with a release agent or a polypropylene-based vinyl. The method of claim 1,
The insulating sheet containing the airgel powder, characterized in that the acrylic polymer resin used to form the insulation sheet layer containing the airgel powder and the acrylic polymer resin used to form the adhesive sheet layer is the same.
A material supply unit supplying at least one of an acrylic polymer resin and a mixture of an acrylic polymer resin and an airgel powder;
A supply roll on which release paper is wound;
An insulation treatment and transfer unit for applying the material supplied from the material supply unit to the release paper transferred from the supply roll;
Drying unit for drying the release paper after the heat treatment and transfer unit; And
Recovery roll for recovering the release paper passed through the drying portion;
The material supply unit is provided,
A first supply unit including a first material reservoir for supplying an acrylic polymer resin and a first feeder for distributing and supplying the material supplied from the first material reservoir onto a surface of the release paper; And
A mixing tank for mixing the acrylic polymer resin supplied from the second material reservoir and the airgel powder supplied from the third material reservoir, and a second feeder for dispersing and supplying the mixture produced in the mixing tank to the surface of the release paper. Second supply unit;
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The first supply part and the second supply part are installed in succession,
And the first supply part is installed close to the supply roll, and the second supply part is installed close to the drying part. delete The method of claim 8, wherein at least one of the first supply unit and the second supply unit,
Insulating sheet manufacturing system containing an airgel powder, characterized in that it further comprises a thickness adjuster for adjusting the thickness of the release paper. The method of claim 10, wherein the heat treatment and the transfer unit,
And a guide for preventing the outflow of the mixture of the acrylic polymer resin and the mixture of the acrylic polymer resin and the airgel powder flowing out of the release paper to be transported and collecting them.
Mixture generation step of producing a mixture of the acrylic polymer resin and the airgel powder;
A mixture applying step of applying the mixture to a release paper; And
A heat insulation sheet generation step of drying the release paper to form a heat insulation sheet layer;
It is provided, further comprising the step of generating an adhesive sheet layer by applying an acrylic polymer resin to the release paper to create an adhesive sheet layer,
The insulation sheet layer is a method of manufacturing a heat insulating sheet containing airgel powder, characterized in that the coating on top of the adhesive sheet layer. delete The method of claim 12,
The acrylic polymer resin is a water-soluble insulating sheet manufacturing method characterized in that the airgel powder characterized in that the water-soluble. The method of claim 14, wherein the airgel powder,
Method of producing a heat insulating sheet containing airgel powder, characterized in that the size is 1 ~ 100㎛ and specific gravity is 0.03 ~ 0.15g / ㎠. 16. The method of claim 15,
The airgel powder is a hydrogel sheet containing the airgel powder, characterized in that the hydrophobic manufacturing method. The method of claim 12, wherein the release paper,
Method for producing an insulating sheet containing aerogel powder, characterized in that the surface is coated with a release agent or vinyl of polypropylene-based.

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