KR101549051B1 - High temperature insulation material for vehicle - Google Patents

High temperature insulation material for vehicle Download PDF

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KR101549051B1
KR101549051B1 KR1020140094288A KR20140094288A KR101549051B1 KR 101549051 B1 KR101549051 B1 KR 101549051B1 KR 1020140094288 A KR1020140094288 A KR 1020140094288A KR 20140094288 A KR20140094288 A KR 20140094288A KR 101549051 B1 KR101549051 B1 KR 101549051B1
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inorganic fiber
binder
weight
fiber layer
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유종현
장재수
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엔브이에이치코리아(주)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The present invention relates to a high temperature insulation material for a vehicle and, more specifically, to a high temperature insulation material for a vehicle, which comprises a first inorganic fiber layer, a binder layer formed on the top of the first inorganic fiber layer, a second inorganic fiber layer formed on the top of the binder layer, and a metal layer formed on the top of the second inorganic layer. The high temperature insulation material for a vehicle has excellent thermal barrier efficiency as the inorganic fiber and the binder are separately manufactured in different layers to form an air layer in the inorganic fiber without immersing the binder in the inorganic fiber.

Description

차량용 고온단열재 {HIGH TEMPERATURE INSULATION MATERIAL FOR VEHICLE}{HIGH TEMPERATURE INSULATION MATERIAL FOR VEHICLE}

본 발명은 차량용 고온단열재에 관한 것으로, 더욱 상세하게는 무기섬유에 바인더를 함침시키지 않고, 무기섬유와 바인더를 별도의 층으로 구분하여 제조되기 때문에, 무기섬유 내에 공기층이 형성되어 우수한 열차단 효율을 나타내는 차량용 고온단열재에 관한 것이다.
More particularly, the present invention relates to a high-temperature insulating material for automobiles, and more particularly, to a method of manufacturing a high-temperature insulating material for automobiles, which does not impregnate an inorganic fiber with a binder and separates the inorganic fiber and the binder into separate layers. The present invention relates to a high temperature thermal insulation material for a vehicle.

일반적으로 자동차의 경우, 엔진부위나 배기부에서 고온의 열이 발생하는데, 상기와 같이 엔진부위나 배기부에서 발생하는 고온으로 인해 주변 부품이 손상되거나 성능저하가 발생하는 것을 차단하기 위해 단열재가 적용되고 있다.Generally, in the case of automobiles, high-temperature heat is generated in the engine or exhaust part. In order to prevent damage to peripheral parts or deterioration of performance due to the high temperature generated in the engine or exhaust part, .

자동차에 적용되는 단열재는 초기에는 폴리프로필렌이나 석고 등을 가공, 처리한 보드형태로 제조되었는데, 상기의 석고보드 및 폴리프로필렌 보드 등은 화학처리되어 생산되므로 악취가 나고, 성형 후 고온에서는 뒤틀림이나 변형이 쉽게 일어나는 문제점이 있었다.Since the gypsum board and the polypropylene board are chemically treated and produced, the odor is generated. At the high temperature after molding, the heat insulation material applied to the automobile is distorted or deformed There was a problem that easily happened.

상기의 문제점을 해소하기 위해 고온에서도 견딜 수 있는 무기섬유를 무기바인더 성분에 함침한 단열재가 사용되고 있는데, 상기의 과정을 통해 제조되는 단열재는 무기섬유 사이에 존재하는 공기층이 무기바인더 성분으로 메워지기 때문에, 연전도율이 높은 문제점이 있었다.In order to solve the above problem, a heat insulating material impregnated with an inorganic binder component capable of withstanding high temperatures is used. In the heat insulating material manufactured through the above process, an air layer existing between inorganic fibers is filled with an inorganic binder component , There is a problem that the rate of conductivity is high.

또한, 종래에 자동차용 단열재는 외관케이스 내에 개재되어 적용부위에 개재된 후에 외관케이스를 나사결합 등으로 결합하는 방식으로 적용되기 때문에 적용부위의 표면이 복잡한 형상을 나타내는 경우에는 적용부위와 단열재 사이에 공간이 존재하게 되기 때문에, 단열효과가 저하되는 문제점이 있었다.
Since the automotive heat insulating material is conventionally interposed in the outer case and is interposed in the application area and then connected to the outer case by a screw or the like, when the surface of the application area shows a complicated shape, There is a problem that the adiabatic effect is deteriorated.

한국특허등록 제10-0067739호(1993.11.17).Korean Patent Registration No. 10-0067739 (November 17, 1993). 한국특허등록 제10-0238549호(1999.10.14).Korean Patent Registration No. 10-0238549 (October 14, 1999).

본 발명의 목적은 무기섬유에 바인더를 함침시키지 않고, 무기섬유와 바인더를 별도의 층으로 구분하여 제조되기 때문에, 무기섬유 내에 공기층이 형성되어 우수한 열차단 효율을 나타내는 차량용 고온단열재를 제공하는 것이다.An object of the present invention is to provide a high-temperature insulation material for a vehicle, which is formed by dividing an inorganic fiber and a binder into separate layers without impregnating the inorganic fiber with a binder, so that an air layer is formed in the inorganic fiber to exhibit excellent heat transfer efficiency.

본 발명의 다른 목적은 내화재 및 다공성 무기물이 함유된 바인더층이 형성되어 우수한 열차단 효율을 나타내는 차량용 고온단열재를 제공하는 것이다.Another object of the present invention is to provide a high-temperature insulation material for a vehicle, in which a refractory material and a binder layer containing a porous inorganic material are formed to exhibit excellent heat barrier efficiency.

본 발명의 또 다른 목적은 유연성이 우수한 금속층을 형성하여 복잡한 표면 형상을 갖는 적용부위에도 밀착형성되는 차량용 고온단열재를 제공하는 것이다.
Another object of the present invention is to provide a high-temperature insulation material for a vehicle which is formed in close contact with an application site having a complicated surface shape by forming a metal layer having excellent flexibility.

본 발명의 목적은 제1무기섬유층, 상기 제1무기섬유층의 상부면에 형성되는 바인더층, 상기 바인더층의 상부면에 형성되는 제2무기섬유층 및 상기 제2무기섬유층의 상부면에 형성되는 금속층으로 이루어지는 것을 특징으로 하는 차량용 고온단열재를 제공함에 의해 달성된다.An object of the present invention is to provide a method of manufacturing a multilayer printed wiring board including a first inorganic fiber layer, a binder layer formed on an upper surface of the first inorganic fiber layer, a second inorganic fiber layer formed on an upper surface of the binder layer, The present invention is also achieved by providing a high temperature insulation material for a vehicle.

본 발명의 바람직한 특징에 따르면, 상기 제1무기섬유층 및 제2무기섬유층은 2 내지 30 밀리미터의 두께로 형성되며, 무기섬유를 니들펀칭하여 이루어지는 것으로 한다.According to a preferred aspect of the present invention, the first inorganic fiber layer and the second inorganic fiber layer are formed to a thickness of 2 to 30 mm, and the inorganic fibers are needle-punched.

본 발명의 더 바람직한 특징에 따르면, 상기 바인더층은 0.5 내지 1.5 밀리미터의 두께로 형성되며, 액상규산나트륨 38 내지 42 중량%, 셀룰로오스계 바인더 1 내지 3 중량%, 산성분 2 내지 4 중량%, 수용성 염 13 내지 15 중량%, 해교제 0.5 내지 1.5 중량%, 내화재 18 내지 22 중량% 및 다공성 무기물 18 내지 22 중량%로 이루어지는 것으로 한다.According to a more preferred feature of the present invention, the binder layer is formed to a thickness of 0.5 to 1.5 millimeters and comprises 38 to 42 wt% of liquid sodium silicate, 1 to 3 wt% of a cellulose binder, 2 to 4 wt% From 13 to 15% by weight of a salt, from 0.5 to 1.5% by weight of a peptizing agent, from 18 to 22% by weight of a refractory material and from 18 to 22% by weight of a porous inorganic material.

본 발명의 더욱 바람직한 특징에 따르면, 상기 산성분은 황산, 질산, 인산, 붕산 및 아세트산으로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the acid component is at least one selected from the group consisting of sulfuric acid, nitric acid, phosphoric acid, boric acid and acetic acid.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 내화재는 아연분말, 알루미늄분말, 알칼리토금속, 알루미나, 탄화규소, 질화규소 및 철분말로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the refractory material is made of at least one selected from the group consisting of zinc powder, aluminum powder, alkaline earth metal, alumina, silicon carbide, silicon nitride and iron powder.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 다공성 무기물은 기공율이 80% 이상인 것으로 한다.According to a further preferred feature of the present invention, the porous inorganic material has a porosity of 80% or more.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 금속층은 두께가 40 내지 300 마이크로미터인 알루미늄 또는 스테인리스로 이루어지는 것으로 한다.
According to a further preferred feature of the present invention, the metal layer is made of aluminum or stainless steel having a thickness of 40 to 300 micrometers.

본 발명에 따른 차량용 고온단열재는 무기섬유에 바인더를 함침시키지 않고, 무기섬유와 바인더를 별도의 층으로 구분하여 제조되기 때문에, 무기섬유 내에 공기층이 형성되어 우수한 열차단 효율을 나타내는 차량용 고온단열재를 제공하는 탁월한 효과를 나타낸다.Since the automotive high temperature insulation material according to the present invention is manufactured by not dividing inorganic fibers into a binder and separating the inorganic fibers and the binder into separate layers, an air layer is formed in the inorganic fibers to provide a high temperature insulating material for vehicles, .

또한, 내화재 및 다공성 무기물이 함유된 바인더층이 형성되어 우수한 열차단 효율을 나타내는 차량용 고온단열재를 제공하는 탁월한 효과를 나타낸다.Further, a refractory material and a binder layer containing a porous inorganic material are formed, thereby exhibiting an excellent effect of providing a high temperature insulating material for a vehicle that exhibits excellent heat barrier efficiency.

또한, 유연성이 우수한 금속층을 형성하여 복잡한 표면 형상을 갖는 적용부위에도 밀착형성되는 차량용 고온단열재를 제공하는 탁월한 효과를 나타낸다.
Further, it shows an excellent effect of providing a high-temperature insulation material for a vehicle which is formed in close contact with an application site having a complicated surface shape by forming a metal layer having excellent flexibility.

도 1은 본 발명에 따른 차량용 고온단열재를 나타낸 분해사시도이다.1 is an exploded perspective view showing a high temperature insulating material for a vehicle according to the present invention.

이하에는, 본 발명의 바람직한 실시예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.
Hereinafter, preferred embodiments of the present invention and physical properties of the respective components will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, And this does not mean that the technical idea and scope of the present invention are limited.

본 발명에 따른 차량용 고온단열재는 제1무기섬유층(10), 상기 제1무기섬유층(10)의 상부면에 형성되는 바인더층(20), 상기 바인더층(20)의 상부면에 형성되는 제2무기섬유층(30) 및 상기 제2무기섬유층(30)의 상부면에 형성되는 금속층(40)으로 이루어진다.
The high temperature insulating material for a vehicle according to the present invention comprises a first inorganic fiber layer 10, a binder layer 20 formed on the upper surface of the first inorganic fiber layer 10, a second inorganic fiber layer 10 formed on the upper surface of the binder layer 20, And an inorganic fiber layer 30 and a metal layer 40 formed on the upper surface of the second inorganic fiber layer 30.

상기 제1무기섬유층(10)은 본 발명에 따른 차량용 고온단열재의 기재가 되는 층으로 2 내지 30 밀리미터의 두께로 형성되며, 무기섬유를 니들펀칭하여 이루어지는데, 상기와 같이 무기섬유를 니들펀칭하여 제조된 제1무기섬유층(10)은 내열성이 우수할 뿐만 아니라, 공기층이 존재하여 차량용 고온단열재의 단열성을 더욱 향상시키는 역할을 한다.The first inorganic fiber layer 10 is formed to have a thickness of 2 to 30 millimeters as a base layer of the automotive high temperature insulation material according to the present invention and is formed by needle punching the inorganic fibers. The manufactured first inorganic fiber layer 10 not only has excellent heat resistance but also has an air layer to further improve the heat insulating property of the automotive high temperature insulation.

이때, 상기 제1무기섬유층(10)은 중량이 300 내지 500g인 실리카펠트를 니들펑칭하여 2 내지 30 밀리미터의 두께로 형성한 것을 사용하는 것이 바람직하다.
At this time, the first inorganic fiber layer 10 preferably has a thickness of 2 to 30 mm by puncturing the silica felt having a weight of 300 to 500 g.

상기 바인더층(20)은 상기 제1무기섬유층(10)의 상부면에 0.5 내지 1.5 밀리미터의 두께로 형성되며 상기 제1무기섬유층(10)과 상기 제2무기섬유층(30)을 접착하고 본 발명에 따른 방음재에 내열성을 향상시키는 역할을 한다.The binder layer 20 is formed on the upper surface of the first inorganic fiber layer 10 to have a thickness of 0.5 to 1.5 mm and the first inorganic fiber layer 10 and the second inorganic fiber layer 30 are bonded to each other, And improves the heat resistance of the sound insulating material according to the present invention.

또한, 상기 바인더층(20)은 액상규산나트륨 38 내지 42 중량%, 셀룰로오스계 바인더 1 내지 3 중량%, 산성분 2 내지 4 중량%, 수용성 염 13 내지 15 중량%, 해교제 0.5 내지 1.5 중량%, 내화재 18 내지 22 중량% 및 다공성 무기물 18 내지 22 중량%로 이루어진다.Also, the binder layer 20 may contain from 38 to 42 wt% of liquid sodium silicate, from 1 to 3 wt% of a cellulose binder, from 2 to 4 wt% of an acidic compound, from 13 to 15 wt% of a water-soluble salt, from 0.5 to 1.5 wt% 18 to 22 wt% of a refractory material, and 18 to 22 wt% of a porous inorganic material.

상기 액상규산나트륨은 38 내지 42 중량%가 함유되며 바인더층의 주재료가 되는 성분으로 내열성을 향상시켜주는 역할을 하는데, 상기 액상규산나트륨의 함량이 38 중량% 미만이면 상기의 효과가 미미하며, 상기 액상규산나트륨의 함량이 42 중량%를 초과하게 되면 바인더층(20)의 점도가 지나치게 증가하여 작업성이 저하된다.The liquid sodium silicate serving as a main ingredient of the binder layer contains 38 to 42% by weight and improves heat resistance. When the content of sodium silicate is less than 38% by weight, the above effect is insignificant. When the content of the liquid sodium silicate exceeds 42% by weight, the viscosity of the binder layer 20 is excessively increased and the workability is lowered.

상기 셀룰로오스계 바인더는 1 내지 3 중량%가 함유되며, 바인더층(20)을 구성하는 성분들을 결속시키며, 바인더층(20)이 일정한 형상을 나타낼 수 있도록 하여 층상구조를 형성하도록 하는 역할을 하는데, 상기 셀룰로오스계 바인더의 함량이 1 중량% 미만이면 상기의 효과가 미미하며, 상기 셀룰로오스계 바인더의 함량이 3 중량%를 초과하게 되면 바인더층(20)의 내열성이 저하될 수 있다.The cellulose based binder is contained in an amount of 1 to 3% by weight, binds components constituting the binder layer 20, and forms a layered structure by allowing the binder layer 20 to exhibit a certain shape, If the content of the cellulose-based binder is less than 1 wt%, the above-mentioned effect is insignificant. If the content of the cellulose-based binder exceeds 3 wt%, the heat resistance of the binder layer 20 may be deteriorated.

상기 산성분은 2 내지 4 중량%가 함유되며, 황산, 질산, 인산, 붕산 및 아세트산으로 이루어진 그룹에서 선택된 하나 이상으로 이루어지며, 바인더층(20)의 내수분 안정성을 부여하는 역할을 하는데, 상기 산성분의 함량이 2 중량% 미만이면 상기의 효과가 미미하며, 상기 산성분의 함량이 4중량%를 초과하게 되면 바인더층(20)을 형성하는 공정의 효율성이 저하될 수 있다.The acid component is contained in an amount of 2 to 4% by weight, and is composed of at least one selected from the group consisting of sulfuric acid, nitric acid, phosphoric acid, boric acid and acetic acid, and serves to impart moisture resistance to the binder layer 20, If the content of the acid component is less than 2% by weight, the above effect is insignificant. If the content of the acid component exceeds 4% by weight, the efficiency of the step of forming the binder layer 20 may be lowered.

상기 수용성 염은 13 내지 15 중량%가 함유되며, 바인더층(20)이 수분에 의해 분해되는 것을 억제하는 역할을 하는데, 상기 수용성 염의 함량이 13 중량% 미만이면 상기의 효과가 저하되며, 상기 수용성 염의 함량이 15 중량%를 초과하게 되면 바인더층(20)의 내열성이 저하될 수 있다.The water-soluble salt is contained in an amount of 13 to 15% by weight and functions to inhibit the binder layer 20 from being decomposed by moisture. When the content of the water-soluble salt is less than 13% by weight, If the salt content exceeds 15% by weight, the heat resistance of the binder layer 20 may be lowered.

상기 해교제는 0.5 내지 1.5 중량%가 함유되며, 수산나트륨, 규산나트륨, 황산나트륨, 인산나트륨, 알루민산나트륨, 옥산살나트륨, 수산화리튬, 탄산리튬 및 알루민산리튬으로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는데, 바인더층(20)에 함유된 무기성분의 분산성을 향상시키는 역할을 한다.The peptizing agent is contained in an amount of 0.5 to 1.5% by weight and is at least one selected from the group consisting of sodium hydroxide, sodium silicate, sodium sulfate, sodium phosphate, sodium aluminate, sodium monosodium hydroxide, lithium hydroxide, lithium carbonate and lithium aluminate And serves to improve the dispersibility of the inorganic component contained in the binder layer 20.

또한, 상기 해교제의 함량이 0.5 중량% 미만이면 바인더층(20)에 함유된 무기성분의 분산성이 저하되여 바인더층(20)의 물성이 저하되며, 상기 해교제의 함량이 1.5 중량%를 초과하게 되면 무기성분의 분산성은 크게 향상되지 않으면서 제조비용을 증가시키게 된다.If the content of the peptizing agent is less than 0.5% by weight, the dispersibility of the inorganic component contained in the binder layer 20 is lowered and the physical properties of the binder layer 20 are lowered. If the content of the peptizing agent is 1.5% The dispersibility of the inorganic component is not greatly improved but the manufacturing cost is increased.

상기 내화재는 18 내지 22 중량%가 함유되며, 아연분말, 알루미늄분말, 알칼리토금속, 알루미나, 탄화규소, 질화규소 및 철분말로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는데, 바인더층(20)의 보형성과 유동성을 향상시키는 역할을 한다.The refractory material contains 18 to 22% by weight of at least one selected from the group consisting of zinc powder, aluminum powder, alkaline earth metal, alumina, silicon carbide, silicon nitride and iron powder. .

또한, 상기 내화재의 함량이 18 중량% 미만이면 바인더층(20)의 보형성이 저하되며, 상기 내화재의 함량이 18 중량%를 초과하게 되면 바인더층(20)의 기계적 물성이 저하될 수 있다.If the content of the refractory material is less than 18% by weight, the formation of the binder layer 20 is reduced. If the refractory material content exceeds 18% by weight, the mechanical properties of the binder layer 20 may be deteriorated.

상기 다공성 무기물은 18 내지 22 중량%가 함유되며, 기공율이 80% 이상인 에어로겔로 이루어지는데, 바인더층(20)의 단열성을 향상시키는 역할을 한다.The porous inorganic material contains 18 to 22% by weight and is composed of an airgel having a porosity of 80% or more, which improves the heat insulating property of the binder layer 20.

이때, 상기 다공성 무기물의 기공율이 80% 미만이면 바이더층(20)의 단열성이 현저하게 저하된다.
At this time, if the porosity of the porous inorganic material is less than 80%, the heat insulating property of the binder layer 20 is remarkably lowered.

상기 제2무기섬유층(30)은 상기 바인더층(20)의 상부면에 2 내지 30 밀리미터의 두께로 형성되며, 무기섬유를 니들펀칭하여 이루어지는데, 상기와 같이 무기섬유를 니들펀칭하여 제조된 제2무기섬유층(30)은 내열성이 우수할 뿐만 아니라, 공기층이 존재하여 차량용 고온단열재의 단열성을 더욱 향상시키는 역할을 한다.The second inorganic fiber layer 30 is formed on the upper surface of the binder layer 20 to a thickness of 2 to 30 millimeters and is formed by needle punching the inorganic fibers. 2 inorganic fiber layer 30 not only has excellent heat resistance but also has an air layer to further improve the heat insulating property of the automotive high temperature insulation.

이때, 상기 제2무기섬유층(30)은 중량이 300 내지 500g인 실리카펠트를 니들펑칭하여 2 내지 30 밀리미터의 두께로 형성한 것을 사용하는 것이 바람직하다.
At this time, the second inorganic fiber layer 30 preferably has a thickness of 2 to 30 mm by puncturing the silica felt having a weight of 300 to 500 g.

상기 금속층(40)은 상기 제2무기섬유층(30)의 상부면에 40 내지 300 마이크로미터의 두께로 형성되며 알루미늄 또는 스테인리스로 이루어지는데, 상기와 같이 알루미늄 또는 스테인리스로 이루어진 금속층(40)은 상기 제2무기섬유층(30)에서 전달된 열을 최종적으로 차단하는 역할을 할 뿐만 아니라, 유연성이 우수하여 복잡한 표면 형상을 갖는 적용부위에 고온단열재가 밀착형성되도록 하는 역할을 한다.
The metal layer 40 is formed on the upper surface of the second inorganic fiber layer 30 to a thickness of 40 to 300 micrometers, and is made of aluminum or stainless steel. As described above, the metal layer 40 made of aluminum or stainless steel, 2 inorganic fiber layer 30 and also has a function of forming a high temperature insulation material on the application site having a complicated surface shape because of its excellent flexibility.

이하에서는, 본 발명에 따른 차량용 고온단열재의 제조방법 및 그 제조방법을 통해 제조된 차량용 고온단열재의 물성을 실시예를 들어 설명하기로 한다.
Hereinafter, the method for manufacturing a high temperature insulating material for a vehicle according to the present invention and the physical properties of a high temperature insulating material for a vehicle manufactured through the method will be described.

<실시예 1>&Lt; Example 1 >

400g의 실리카펠트를 니들펀칭하여 두께가 4 밀리미터인 제1무기섬유층을 제조하고, 상기 제1무기섬유층의 상부면에 액상규산나트륨 40 중량%, 셀룰로오스계 바인더 2 중량%, 황산 3 중량%, 수용성 염 14 중량%, 수산나트륨 1.0 중량%, 알루미나 20 중량% 및 기공율이 80%인 에어로겔 20 중량%를 혼합하여 이루어진 혼합물을 1 밀리미터의 두께로 도포하여 바인더층을 제조하고, 상기 바인더층의 상부면에 400g의 실리카펠트를 니들펀칭하여 제조된 두께 4 밀리미터의 제2무기섬유층을 적층하고, 상기 제2무기섬유층의 상부면에 두께가 48 마이크로미터인 알루미늄 호일을 적층하여 차량용 고온단열재를 제조하였다.
400 g of silica felt was needle punched to prepare a first inorganic fiber layer having a thickness of 4 mm. On the upper surface of the first inorganic fiber layer, 40 wt% of liquid sodium silicate, 2 wt% of cellulose binder, 3 wt% A mixture of 14% by weight of salt, 1.0% by weight of sodium hydroxide, 20% by weight of alumina and 20% by weight of an airgel having a porosity of 80% is applied to a thickness of 1 millimeter to prepare a binder layer, And a second inorganic fiber layer having a thickness of 4 mm produced by needle punching 400 g of silica felt was laminated on the second inorganic fiber layer and an aluminum foil having a thickness of 48 micrometers was laminated on the upper surface of the second inorganic fiber layer to produce a vehicle high temperature insulation.

<비교예 1>&Lt; Comparative Example 1 &

500g의 실리카섬유를 액상규산나트륨 40 중량%, 셀룰로오스계 바인더 2 중량%, 황산 3 중량%, 수용성 염 14 중량%, 수산나트륨 1.0 중량%, 알루미나 20 중량% 및 기공율이 80%인 에어로겔 20 중량%를 혼합하여 이루어진 혼합물에 함침하여 기재층을 제조하고, 상기 기재층의 상부면에 두께가 48 마이크로미터인 알루미늄 호일을 적층하여 차량용 고온단열재를 제조하였다.
500 g of silica fiber was mixed with 20 wt% of aerogels having 40 wt% of liquid sodium silicate, 2 wt% of cellulose binder, 3 wt% of sulfuric acid, 14 wt% of water soluble salt, 1.0 wt% of sodium hydroxide, 20 wt% of alumina, To prepare a base layer. An aluminum foil having a thickness of 48 micrometers was laminated on the upper surface of the base layer to produce a high-temperature insulation material for a vehicle.

상기 실시예 1 및 비교예 1을 통해 제조된 차량용 고온단열재의 연전도율을 측정하여 아래 표 1에 나타내었다.The thermal conductivity of the automotive high temperature insulation material prepared in Example 1 and Comparative Example 1 was measured and shown in Table 1 below.

{단, 연전도율의 측정은 열판법을 이용하였으며, 에코(EKO)사의 HC-074를 이용하였다.}
(However, the measurement of the soft conductivity was carried out using a hot plate method and HC-074 from EKO Co., Ltd. was used.)

<표 1><Table 1>

Figure 112014070049391-pat00001
Figure 112014070049391-pat00001

위에 표 1에 나타낸 것처럼, 본 발명의 실시예 1을 통해 제조된 차량용 고온단열재는 비교예 1과 동일한 바인더성분을 사용했으나, 무기섬유층과 바인더층이 구분되도록 형성되어 열전도율이 더욱 낮은 것을 알 수 있다.
As shown in Table 1 above, the same high-temperature insulating material for automobile manufactured through Example 1 of the present invention uses the same binder component as that of Comparative Example 1, but the inorganic fiber layer and the binder layer are formed to be separated from each other, and the thermal conductivity is further lowered .

10 ; 제1무기섬유층
20 ; 바인더층
30 ; 제2무기섬유층
40 ; 금속층10; The first inorganic fiber layer
20; Binder layer
30; The second inorganic fiber layer
40; Metal layer

Claims (7)

제1무기섬유층;
상기 제1무기섬유층의 상부면에 형성되는 바인더층;
상기 바인더층의 상부면에 형성되는 제2무기섬유층; 및
상기 제2무기섬유층의 상부면에 형성되는 금속층;으로 이루어지며,
상기 바인더층은 액상규산나트륨 38 내지 42 중량%, 셀룰로오스계 바인더 1 내지 3 중량%, 산성분 2 내지 4 중량%, 수용성 염 13 내지 15 중량%, 해교제 0.5 내지 1.5 중량%, 내화재 18 내지 22 중량% 및 다공성 무기물 18 내지 22 중량%로 이루어지는 것을 특징으로 하는 차량용 고온단열재.
A first inorganic fiber layer;
A binder layer formed on an upper surface of the first inorganic fiber layer;
A second inorganic fiber layer formed on an upper surface of the binder layer; And
And a metal layer formed on an upper surface of the second inorganic fiber layer,
Wherein the binder layer comprises from 38 to 42% by weight of liquid sodium silicate, from 1 to 3% by weight of a cellulose binder, from 2 to 4% by weight of an acidic component, from 13 to 15% by weight of a water-soluble salt, from 0.5 to 1.5% by weight of a peptizer, And 18 to 22 wt% of a porous inorganic material.
청구항 1에 있어서,
상기 제1무기섬유층 및 제2무기섬유층은 2 내지 30 밀리미터의 두께로 형성되며, 무기섬유를 니들펀칭하여 이루어지는 것을 특징으로 하는 차량용 고온단열재.
The method according to claim 1,
Wherein the first inorganic fiber layer and the second inorganic fiber layer are formed to a thickness of 2 to 30 millimeters, and the inorganic fibers are needle-punched.
청구항 1에 있어서,
상기 바인더층은 0.5 내지 5 밀리미터의 두께로 형성되는 것을 특징으로 하는 차량용 고온단열재.
The method according to claim 1,
Wherein the binder layer is formed to a thickness of 0.5 to 5 millimeters.
청구항 1에 있어서,
상기 산성분은 황산, 질산, 인산, 붕산 및 아세트산으로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 차량용 고온단열재.
The method according to claim 1,
Wherein the acid component is at least one selected from the group consisting of sulfuric acid, nitric acid, phosphoric acid, boric acid, and acetic acid.
청구항 1에 있어서,
상기 내화재는 아연분말, 알루미늄분말, 알칼리토금속, 알루미나, 탄화규소, 질화규소 및 철분말로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 차량용 고온단열재.
The method according to claim 1,
Wherein the refractory material is at least one selected from the group consisting of zinc powder, aluminum powder, alkaline earth metal, alumina, silicon carbide, silicon nitride, and iron powder.
청구항 1에 있어서,
상기 다공성 무기물은 기공율이 80% 이상인 것을 특징으로 하는 차량용 고온단열재.
The method according to claim 1,
Wherein the porous inorganic material has a porosity of 80% or more.
청구항 1에 있어서,
상기 금속층은 두께가 40 내지 300 마이크로미터인 알루미늄 또는 스테인리스로 이루어지는 것을 특징으로 하는 차량용 고온단열재.The method according to claim 1,
Wherein the metal layer is made of aluminum or stainless steel having a thickness of 40 to 300 micrometers.
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KR20220151749A (en) * 2021-05-07 2022-11-15 인하대학교 산학협력단 Sound absorbing and insulating material for automobile engine encapsulation

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US11266344B2 (en) 2016-09-21 2022-03-08 Samsung Electronics Co., Ltd. Method for measuring skin condition and electronic device therefor
KR20220151749A (en) * 2021-05-07 2022-11-15 인하대학교 산학협력단 Sound absorbing and insulating material for automobile engine encapsulation
KR102566758B1 (en) * 2021-05-07 2023-08-14 인하대학교 산학협력단 Sound absorbing and insulating material for automobile engine encapsulation

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