KR20100083543A - Method of manufacturing high temperature insulation flexible blanket formed of silica aerogel with non-woven glass fibre batting and, the blanket manufactured by the method - Google Patents

Method of manufacturing high temperature insulation flexible blanket formed of silica aerogel with non-woven glass fibre batting and, the blanket manufactured by the method Download PDF

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KR20100083543A
KR20100083543A KR1020090002984A KR20090002984A KR20100083543A KR 20100083543 A KR20100083543 A KR 20100083543A KR 1020090002984 A KR1020090002984 A KR 1020090002984A KR 20090002984 A KR20090002984 A KR 20090002984A KR 20100083543 A KR20100083543 A KR 20100083543A
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organic adhesive
insulating material
film
manufacturing
heat insulating
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KR1020090002984A
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KR101072287B1 (en
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이기흥
하창성
양채승
김상환
임재현
윤승관
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서경카로라이즈공업주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating

Abstract

PURPOSE: A manufacturing method of an insulating material with the improved flexibility, and the insulating material manufactured therefrom are provided to secure the excellent insulation effect, and to use the material for a curved surface of a structure. CONSTITUTION: A manufacturing method of an insulating material comprises the following steps: crushing a fiber felt formed with a chemical fiber, a carbon fiber, or a glass fiber to form a non-woven fabric film(10); spreading a non-solvent type organic adhesive(20) to the non-woven fabric film; forming a thermal-insulation layer(50) by adsorbing silica aerogel powder to the non-woven fabric film; and producing a laminated insulating material(60) by laminating the thermal-insulation layer.

Description

실리카 에어로젤에 부직포 상태의 섬유가 보강된 유연성이 우수한 단열재의 제조방법 및 그 방법에 의하여 제조된 단열재 {Method of manufacturing high temperature insulation flexible blanket formed of silica aerogel with non-woven glass fibre batting and, the blanket manufactured by the method}TECHNICAL FIELD OF THE INVENTION A method of manufacturing a flexible insulating material in which silica fibers are reinforced with a nonwoven fabric, and a heat insulating material manufactured by the method. by the method}

본 발명은 단열재에 관한 것으로, 보다 상세하게는 실리카 에어로젤(silica aerogel)에 부직포 상태의 섬유가 보강된 유연성이 우수한 단열재의 제조방법 및 그 방법에 의하여 제조된 단열재에 관한 것이다.The present invention relates to a heat insulating material, and more particularly, to a method for producing a heat insulating material having excellent flexibility in which fibers of a nonwoven fabric are reinforced on a silica aerogel, and a heat insulating material produced by the method.

종래, 일정한 온도가 유지되도록 하려는 부분의 바깥쪽을 피복하여 외부로의 열손실이나 열의 유입을 적게 하기 위한 목적으로 단열재가 사용되고 있으며, 다양한 종류의 단열재가 개발되어 사용되고 있다.Conventionally, insulation is used for the purpose of reducing the heat loss or the inflow of heat to the outside by covering the outside of the portion to maintain a constant temperature, various types of insulation have been developed and used.

최근에는 단열 효과가 매우 우수한 단열재로서, 실리카 에어로젤(silica aerogel)을 사용한 단열재가 개발되어 사용되고 있다. 이러한 순수 실리카 에어로 젤만을 사용한 단열재는 단열효과는 매우 뛰어나지만 딱딱하게 경화된 구성으로 인하여 평평한 구조물이나 직선 구조물에 대한 단열재로는 적합하지만, 유연성이 없기 때문에 평평하지 않고 굴곡진 구조물이나 구조물의 곡선부분에 사용하기에는 적 합하지 않고, 충격에 취약하여 쉽게 파괴되는 문제점이 있다.Recently, as a heat insulating material having excellent heat insulating effect, a heat insulating material using silica aerogel has been developed and used. Insulation material using only pure silica aerogel has excellent insulation effect, but it is suitable as insulation material for flat structure or straight structure because of hardened composition, but it is not flat because of inflexibility and curved part of curved structure or structure Not suitable for use in, there is a problem that is fragile and easy to break.

따라서 우수한 단열효과를 유지하면서 평평한 구조물이나 직선 구조물뿐만 아니라 평평하지 않고 굴곡진 구조물이나 구조물의 곡선부분에도 사용하기에 적합한 변형성이 우수한 내충격성의 단열재 개발이 요망되고 있다.Therefore, it is desirable to develop impact-resistant insulation having excellent deformability suitable for use on curved or curved structures as well as flat structures or straight structures while maintaining excellent insulation effect.

이에, 본 발명은 상기한 종래 기술의 요망사항에 부응하기 위하여 안출된 것으로, 실리카 에어로젤에 부직포 상태의 섬유를 보강함으로써 우수한 단열효과를 유지하면서 우수한 유연성을 갖도록 구성된 단열재의 제조 방법을 제공하고자 함에 그 목적이 있다.Accordingly, the present invention has been made to meet the above-described requirements of the prior art, and to provide a method of manufacturing a heat insulating material configured to have excellent flexibility while maintaining a good heat insulating effect by reinforcing fibers in the non-woven state to silica airgel. There is a purpose.

본 발명은 실리카 에어로젤에 부직포 상태의 섬유를 보강함으로써 섬유와 에어로젤의 장점이 서로 보완되어 우수한 단열효과를 유지하면서 우수한 유연성을 갖도록 구성된 단열재를 제공하고자 함에 그 목적이 있다.An object of the present invention is to provide a heat insulating material configured to have excellent flexibility while maintaining the excellent heat insulating effect by reinforcing the fibers of the non-woven state to the silica airgel fiber and the airgel.

상기한 목적을 달성하기 위해 본 발명에 따른 단열재의 제조방법은, 화학섬유, 탄소섬유와 유리섬유 중 적어도 어느 하나로 이루어진 섬유 펠트를 분쇄하여 부직포 상태의 얇은 섬유막인 부직포막을 제작하는 제1공정과; 상기 제작된 얇은 부직포막에 비용제형 유기 접착제를 도포하는 제2공정과; 상기 비용제형 유기 접착제가 도포된 부직포막에 실리카 에어로젤(silica aerogel) 분말을 흡착시켜 단열재 층을 제작하는 제3공정을 포함하는 것을 특징으로 한다.In order to achieve the above object, the manufacturing method of the heat insulating material according to the present invention comprises a first step of manufacturing a non-woven fabric film of a non-woven fabric by pulverizing the fiber felt made of at least one of chemical fibers, carbon fibers and glass fibers; A second step of applying a non-product type organic adhesive to the manufactured thin nonwoven film; And a third step of preparing a heat insulating material layer by adsorbing silica aerogel powder on the nonwoven film coated with the non-formal organic adhesive.

여기서, 위해 본 발명에 따른 단열재의 제조방법은, 상기 단열재 층을 적층하여 적층 단열재를 제작하는 제4공정을 더 포함하는 것이 바람직하다.Here, it is preferable that the manufacturing method of the heat insulating material which concerns on this invention further includes the 4th process of manufacturing the laminated heat insulating material by laminating | stacking the said heat insulating material layer.

또한, 상기 제1공정에서 1~10mm 정도 두께의 섬유 펠트를 분쇄하여 0.1~2㎜의 두께의 부직포막을 제작하는 것이 바람직하다.In addition, it is preferable to produce a nonwoven fabric film having a thickness of 0.1 to 2 mm by pulverizing a fiber felt having a thickness of about 1 to 10 mm in the first step.

또한, 상기 비용제형 유기 접착제는 에폭시 계열의 유기 접착제, 실리콘 계열의 유기 접착제, 페놀수지 계열의 유기 접착제 및 PTFE 중에서 선택된 어느 하나인 것이 바람직하다.In addition, the non-formal organic adhesive is preferably any one selected from an epoxy-based organic adhesive, a silicone-based organic adhesive, a phenol resin-based organic adhesive, and PTFE.

또한, 상기 실리카 에어로젤 분말은 0.05mm~0.5mm의 크기를 갖는 것이 바람직하다.In addition, the silica airgel powder preferably has a size of 0.05mm ~ 0.5mm.

또한, 상기 제3공정은, 비용제형 유기 접착제가 도포된 부직포막에 실리카 에어로젤 분말을 균일하게 도포하는 제1단계와; 정전 도장 방법을 사용함으로써 비용제형 유기 접착제의 융점 임계온도에서 실리카 에어로젤의 단위 입자가 부직포막을 구성하는 섬유의 외피에 고정, 착상되도록 하는 제2단계를 포함하는 것이 바람직하다.In addition, the third process, the first step of uniformly applying the silica airgel powder to the non-woven film coated with a non-formal organic adhesive; It is preferable to include a second step by which the unit particles of the silica airgel are fixed and implanted on the outer skin of the fibers constituting the nonwoven film at the melting point critical temperature of the non-formal organic adhesive by using the electrostatic coating method.

또한, 상기 제2공정에서 도포하는 접착제의 양은 부직포막이 100wt%일 때 2wt%~30wt%의 양을 사용하는 것이 바람직하다.In addition, the amount of the adhesive applied in the second step is preferably used in the amount of 2wt% ~ 30wt% when the nonwoven film is 100wt%.

또한, 상기 제4공정에서의 적층은 끝부분이 W 형상을 갖는 바늘을 이용하여 박음질하여 단열재 층 자체의 섬유로 상하부 각 단열재 층을 부분적으로 적층 결합하는 것이 바람직하다.In addition, the lamination in the fourth step is preferably stitched by using a needle having a W-shaped end portion to partially laminate the upper and lower respective heat insulating material layers with fibers of the heat insulating material layer itself.

상기한 목적을 달성하기 위해 본 발명에 따른 단열재는, 상기한 제조방법에 의하여 제조된 것을 특징으로 한다.In order to achieve the above object, the heat insulating material according to the present invention is characterized by being manufactured by the above-described manufacturing method.

상기와 같이 구성된 본 발명에 의하면, 실리카 에어로젤에 부직포 상태의 섬유를 보강함으로써 우수한 단열효과를 유지하면서 우수한 유연성을 갖게 된다. 이 에 따라, 본 발명은 우수한 단열효과를 유지하면서 평평한 구조물이나 직선 구조물뿐만 아니라 평평하지 않고 굴곡진 구조물이나 구조물의 곡선부분에도 사용할 수 있는 우수한 효과가 있다.According to the present invention configured as described above, by reinforcing the fibers in the non-woven state to the silica airgel has excellent flexibility while maintaining excellent heat insulating effect. Accordingly, the present invention has an excellent effect that can be used not only flat structures or straight structures, but also flat and curved structures or curved portions of structures while maintaining excellent heat insulating effect.

또한, 본 발명에 의하면, 정전 도장 방법과 융착을 이용해 실리카 에어로젤을 섬유에 코팅, 균일한 두께로 착상시킴으로써 단열재 층 사이의 독립된 기공을 극소화시킬 수 있는 장점이 있기 때문에 기존에 상용화 되어 있는 여타의 단열재에 비해 단열특성을 현저하게 향상시킬 수 있는 우수한 효과가 있다. In addition, according to the present invention, since the silica airgel is coated on the fiber and implanted into a uniform thickness using an electrostatic coating method and fusion, it is possible to minimize the independent pores between the insulation layers, so that other heat insulating materials that are commercially available. Compared to the above, there is an excellent effect that can significantly improve the thermal insulation properties.

이하, 첨부도면을 참조하여 본 발명의 바람직한 실시예에 따른 실리카 에어로젤에 부직포 상태의 섬유가 보강된 유연성이 우수한 단열재의 제조방법 및 그 방법에 의하여 제조된 단열재에 대하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a method of producing a heat insulating material having excellent flexibility in which the fiber of the nonwoven fabric is reinforced on the silica airgel according to a preferred embodiment of the present invention and the heat insulating material produced by the method.

도 1은 본 발명의 바람직한 실시예에 따른 실리카 에어로젤에 부직포 상태의 섬유가 보강된 유연성이 우수한 단열재의 제조방법에 대한 제조 공정을 개략적으로 도시한 도면이다.1 is a view schematically showing a manufacturing process for a method of producing a flexible insulating material reinforced with fibers of a nonwoven fabric in a silica airgel according to a preferred embodiment of the present invention.

먼저, 화학섬유, 탄소섬유 또는 유리섬유 등을 이용하여 솜과 같은 부직포(non-woven) 상태의 얇은 섬유막(이하, "부직포막"이라 함)(10)을 제작한다. 여기서, 기존의 상용화되어 있는 화학섬유, 탄소섬유 또는 유리섬유 등과 같이 두께가 대략 1~10mm 정도 두께의 섬유 펠트를 커팅기(부직포 제조장치)를 이용하여 목적하는 두께로 분쇄하여 부직포 상태의 섬유막(부직포막)을 제작한다. 이때 제조하고자 하는 부직포의 두께는 커팅기에 장입되는 섬유의 량과 이동속도 등 공정조건 에 따라 대략 0.1~2㎜의 두께로 부직포막을 제작할 수 있다.First, a thin fibrous film (hereinafter referred to as "nonwoven film") 10 of non-woven state such as cotton is manufactured using chemical fiber, carbon fiber or glass fiber. Here, the fiber membrane (non-woven fabric) by pulverizing the fiber felt having a thickness of about 1 ~ 10mm thickness to the desired thickness using a cutting machine (nonwoven fabric manufacturing apparatus), such as conventional commercially available chemical fiber, carbon fiber or glass fiber Film). In this case, the thickness of the nonwoven fabric to be manufactured may be manufactured to a thickness of approximately 0.1 to 2 mm depending on the process conditions such as the amount of fibers and the moving speed of the cutting machine.

그후, 상기 제작된 얇은 부직포막(10)에 비용제형 유기 접착제(20)를 도포하여 부직포막을 구성하는 섬유에 비용제형 유기 접착제(binder)가 도포된 부직포막(40)을 제작한다.Thereafter, the non-woven organic adhesive 20 is applied to the fabricated thin nonwoven fabric 10 to produce a non-woven organic membrane 40 having a non-woven organic adhesive applied to the fibers constituting the nonwoven fabric.

여기서, 상기 비용제형 유기 접착제로는 에폭시 계열, 실리콘 계열, 페놀수지 계열, PTFE 등을 사용할 수 있다. 에폭시 계열의 접착제는 상온에서 직접 도포하여 사용하며, 경화제와 1:1로 희석하여 한다. 실리콘 계열의 접착제 또한 상온에서 적당량 도포하여 사용하며, 완전 경화되기까지 약 24시간의 시간이 필요하다. 페놀수지 계열의 접착제는 170~200℃ 범위에서 20분간 가열하여 도포하며, PTFE는 320℃~400℃ 범위에서 20분간 가열 후 도포한다. 이때 도포하는 각각의 접착제의 양은 부직포막(10)과의 무게비(wt%)로 결정되며, 부직포막이 100wt%일 때 접착제는 2wt%~30wt%의 양을 사용하는 것이 바람직하다.Here, the non-formal organic adhesive may be epoxy-based, silicone-based, phenol resin-based, PTFE or the like. Epoxy-based adhesives are applied directly at room temperature and diluted 1: 1 with a curing agent. Silicone-based adhesives are also applied at room temperature in appropriate amounts and require about 24 hours to fully cure. Phenolic resin-based adhesive is applied by heating for 20 minutes in the range of 170 ~ 200 ℃, PTFE is applied after heating for 20 minutes in the range of 320 ℃ ~ 400 ℃. At this time, the amount of each adhesive to be applied is determined by the weight ratio (wt%) with the nonwoven film 10, when the nonwoven film is 100wt% it is preferable that the adhesive is used in the amount of 2wt% ~ 30wt%.

이어, 비용제형 유기 접착제가 도포된 부직포막(40)에 크기가 0.05mm~0.5mm 정도인 실리카 에어로젤(silica aerogel) 분말을 흡착시켜, 유기 접착제를 매개로 실리카 에어로젤이 부직포막에 흡착되어 구성된 단열재 층(50)을 제작한다.Next, a silica aerogel powder having a size of about 0.05 mm to 0.5 mm is adsorbed to the nonwoven membrane 40 coated with the non-formal organic adhesive, and the silica aerogel is adsorbed onto the nonwoven membrane through the organic adhesive. Layer 50 is fabricated.

여기서, 비용제형 유기 접착제가 도포된 부직포막(40)에 실리카 에어로젤 분말을 균일하게 도포하고 나서, 정전 도장 방법을 사용함으로써 비용제형 유기 접착제의 융점 임계온도에서 실리카 에어로젤의 단위 입자가 부직포막(40)을 구성하는 섬유의 외피에 고정, 착상되도록 한다. 도 2에는 부직포막을 구성하는 섬유(15)에 실리카 에어로젤(35)이 유기 접착제(25)를 매개로 흡착된 상태가 확대해서 도시되 어 있다. Here, the silica airgel powder is uniformly applied to the nonwoven film 40 coated with the non-formal organic adhesive, and then the unit particles of the silica airgel are melted at the critical temperature of the non-woven organic adhesive by using the electrostatic coating method. It is to be fixed and implanted in the outer skin of the fiber constituting the). 2 shows an enlarged state in which the silica airgel 35 is adsorbed through the organic adhesive 25 to the fibers 15 constituting the nonwoven fabric film.

그후, 상기와 같이 제작된 단열재 층(50)을 적층하여 적층 단열재(60)를 제작한다.Thereafter, the insulation layer 50 prepared as described above is laminated to produce a laminated insulation material 60.

여기서, 각각의 얇은 형태로 제작된 단열재 층(50)은 각각의 섬유가 부직포 형태로 짜여 있으며, 그 각각의 섬유에 실리카 에어로젤이 착상되어 있는 형태이다. 이렇게 제조된 각각의 단열재 층들은 미싱과 같은 원리의 장치를 이용하여 박음질로 적층 결합한다. 이때, 도 3에 도시한 바와 같이 복수의 단열재 층(52,54,56,58; 60)을 적층 고정하기 위해서는 실 등과 같은 새로운 재료를 사용하는 것이 아니고, 도 4에 도시한 바와 같이 끝부분이 W 형상을 하는 바늘(통상적으로 "펀칭 핀"이라고도 함)을 이용하여 박음질(펀칭)하여 단열재 층 자체의 섬유로 각 단열재 층을 적층 결합한다. 이와 같이 펀칭 핀으로 복수의 단열재 층(52,54,56,58)을 위에서 박음질 하게 되면, 펀칭 핀을 구성하는 W 형상의 끝부분에 의하여 단열재 층등의 위쪽에서부터 단열재를 구성하는 섬유가 펀칭 핀의 끝부분에 의하여 도 3의 도면부호 65로 표시한 것과 같이 아래쪽으로 밀려 내려가게 됨에 따라 마치 박음질한 것과 같이 된다.Here, each of the insulating layer 50 is formed in a thin form, each fiber is woven in the form of a non-woven fabric, the silica airgel is a form in which each fiber is implanted. Each of the insulation layers thus produced is laminated and stitched together using a device of the same principle as the sewing machine. In this case, in order to stack and fix the plurality of insulation layers 52, 54, 56, 58; 60, as shown in FIG. 3, a new material such as a thread is not used, and an end portion thereof is shown in FIG. 4. It is sewn (punched) using a W-shaped needle (commonly referred to as a "punch pin") to laminate each insulation layer with fibers of the insulation layer itself. When the plurality of insulation layers 52, 54, 56, 58 are sewn from above with the punching pins, the fibers constituting the insulation material from the upper side of the insulation layer or the like by the W-shaped end portions forming the punching pins are formed. As the end portion is pushed down as indicated by the reference numeral 65 of FIG. 3, it becomes as if it is sewn.

이상 설명한 바와 같이 본 발명의 제조 방법에 의해 제조된 단열재에 의하면, 실리카 에어로젤에 부직포 상태의 섬유를 보강함으로써 우수한 단열효과를 유지하면서 우수한 유연성을 갖게 된다. 이에 따라, 본 발명은 우수한 단열효과를 유지하면서 평평한 구조물이나 직선 구조물뿐만 아니라 평평하지 않고 굴곡진 구조물이나 구조물의 곡선부분에도 사용할 수 있게 된다. As explained above, according to the heat insulating material manufactured by the manufacturing method of this invention, by reinforcing a fiber of a nonwoven fabric state to a silica airgel, it has excellent flexibility, maintaining the excellent heat insulation effect. Accordingly, the present invention can be used not only flat structures or straight structures, but also flat and curved structures or curved portions of structures while maintaining excellent heat insulating effect.

또한, 본 발명의 제조 방법에 의해 제조된 단열재에 의하면, 정전 도장 방법과 융착을 이용해 실리카 에어로젤을 섬유에 코팅, 균일한 두께로 착상시킴으로써 단열재 층 사이의 독립된 기공을 극소화시킬 수 있는 장점이 있기 때문에 기존에 상용화 되어 있는 여타의 단열재에 비해 단열특성을 현저하게 향상시킬 수 있게 된다. In addition, according to the heat insulating material produced by the manufacturing method of the present invention, by using the electrostatic coating method and fusion, the silica airgel is coated on the fiber and implanted into a uniform thickness, thereby minimizing the independent pores between the heat insulating layer. Compared with other commercially available thermal insulators, the thermal insulation properties can be significantly improved.

도 1은 본 발명의 바람직한 실시예에 따른 실리카 에어로젤에 부직포 상태의 섬유가 보강된 유연성이 우수한 단열재의 제조방법에 대한 제조 공정을 개략적으로 도시한 도면이다.1 is a view schematically showing a manufacturing process for a method of producing a flexible insulating material reinforced with fibers of a nonwoven fabric in a silica airgel according to a preferred embodiment of the present invention.

도 2는 본 발명에 따라 부직포막을 구성하는 섬유에 실리카 에어로젤이 유기 접착제를 매개로 흡착된 상태를 확대하여 도시한 도면이다.2 is an enlarged view illustrating a state in which silica airgel is adsorbed through an organic adhesive to fibers constituting the nonwoven fabric according to the present invention.

도 3은 본 발명에 따라 제조된 단열재 층의 적층 구조에 대한 단면을 개략적으로 도시한 도면이다.Figure 3 is a schematic cross-sectional view of the laminated structure of the insulation layer manufactured in accordance with the present invention.

도 4는 본 발명에 따라 단열재 층의 적층에 사용되는 바늘의 끝부분을 도시한 도면이다.Figure 4 shows the tip of the needle used for lamination of the insulation layer in accordance with the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

10 : 부직포막 20 : 비용제형 유기 접착제10 nonwoven fabric 20 non-conductive organic adhesive

30 : 실리카 에어로젤 분말 50 : 단열재 층30 Silica airgel powder 50 Insulation layer

60 : 적층 단열재60: laminated insulation

Claims (9)

화학섬유, 탄소섬유와 유리섬유 중 적어도 어느 하나로 이루어진 섬유 펠트를 분쇄하여 부직포 상태의 얇은 섬유막인 부직포막을 제작하는 제1공정과;A first step of pulverizing a fiber felt made of at least one of chemical fibers, carbon fibers and glass fibers to produce a nonwoven fabric film which is a thin fiber film of a nonwoven fabric; 상기 제작된 얇은 부직포막에 비용제형 유기 접착제를 도포하는 제2공정과;A second step of applying a non-product type organic adhesive to the manufactured thin nonwoven film; 상기 비용제형 유기 접착제가 도포된 부직포막에 실리카 에어로젤(silica aerogel) 분말을 흡착시켜 단열재 층을 제작하는 제3공정을 포함하는 것을 특징으로 하는 단열재의 제조방법.And a third process of adsorbing silica aerogel powder on the nonwoven film to which the non-formal organic adhesive is applied to form a heat insulating material layer. 제1항에 있어서,The method of claim 1, 상기 단열재 층을 적층하여 적층 단열재를 제작하는 제4공정을 더 포함하는 것을 특징으로 하는 단열재의 제조방법.And a fourth step of manufacturing the laminated insulation by laminating the insulation layer. 제1항에 있어서,The method of claim 1, 상기 제1공정에서 1~10mm 정도 두께의 섬유 펠트를 분쇄하여 0.1~2㎜의 두께의 부직포막을 제작하는 것을 특징으로 하는 단열재의 제조방법.In the first step, a fiber felt having a thickness of about 1 to 10 mm is pulverized to produce a nonwoven fabric having a thickness of about 0.1 to 2 mm. 제1항에 있어서,The method of claim 1, 상기 비용제형 유기 접착제는 에폭시 계열의 유기 접착제, 실리콘 계열의 유기 접착제, 페놀수지 계열의 유기 접착제 및 PTFE 중에서 선택된 어느 하나인 것을 특징으로 하는 단열재의 제조방법.The non-formal organic adhesive may be any one selected from an epoxy-based organic adhesive, a silicone-based organic adhesive, a phenol resin-based organic adhesive, and PTFE. 제1항에 있어서,The method of claim 1, 상기 실리카 에어로젤 분말은 0.05mm~0.5mm의 크기를 갖는 것을 특징으로 하는 단열재의 제조방법.The silica airgel powder is a manufacturing method of the heat insulating material, characterized in that having a size of 0.05mm ~ 0.5mm. 제1항에 있어서,The method of claim 1, 상기 제3공정은,The third step, 비용제형 유기 접착제가 도포된 부직포막에 실리카 에어로젤 분말을 균일하게 도포하는 제1단계와;A first step of uniformly applying silica airgel powder to the nonwoven film to which the non-formal organic adhesive is applied; 정전 도장 방법을 사용함으로써 비용제형 유기 접착제의 융점 임계온도에서 실리카 에어로젤의 단위 입자가 부직포막을 구성하는 섬유의 외피에 고정, 착상되도록 하는 제2단계를 포함하는 것을 특징으로 하는 단열재의 제조방법.And a second step of allowing the unit particles of the silica airgel to be fixed and implanted on the outer skin of the fibers constituting the nonwoven film at the melting point critical temperature of the non-formal organic adhesive by using the electrostatic coating method. 제1항에 있어서,The method of claim 1, 상기 제2공정에서 도포하는 접착제의 양은 부직포막이 100wt%일 때 2wt%~30wt%의 양을 사용하는 것을 특징으로 하는 단열재의 제조방법.The amount of the adhesive applied in the second step is a method for producing a heat insulator, characterized in that the nonwoven film is used in the amount of 2wt% ~ 30wt% when 100wt%. 제2항에 있어서,The method of claim 2, 상기 제4공정에서의 적층은 끝부분이 W 형상을 갖는 바늘을 이용하여 박음질 하여 단열재 층 자체의 섬유로 상하부 각 단열재 층을 부분적으로 적층 결합하는 것을 특징으로 하는 단열재의 제조방법.Lamination in the fourth step is sewn using a needle having a W-shaped end portion of the insulating material manufacturing method, characterized in that to partially laminate the upper and lower insulating layers by the fibers of the insulating layer itself. 제1항 내지 제8항 중 어느 한 항에 기재된 제조방법에 의하여 제조된 것을 특징으로 하는 단열재.It was manufactured by the manufacturing method in any one of Claims 1-8, The heat insulating material characterized by the above-mentioned.
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