WO2020111302A1 - Carbon planar heating element for ceiling interior material of vehicle - Google Patents
Carbon planar heating element for ceiling interior material of vehicle Download PDFInfo
- Publication number
- WO2020111302A1 WO2020111302A1 PCT/KR2018/014777 KR2018014777W WO2020111302A1 WO 2020111302 A1 WO2020111302 A1 WO 2020111302A1 KR 2018014777 W KR2018014777 W KR 2018014777W WO 2020111302 A1 WO2020111302 A1 WO 2020111302A1
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- Prior art keywords
- carbon
- vehicle
- heating element
- sheet
- polyethylene
- Prior art date
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 75
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 37
- 239000004917 carbon fiber Substances 0.000 claims abstract description 37
- 239000004698 Polyethylene Substances 0.000 claims abstract description 32
- -1 polyethylene Polymers 0.000 claims abstract description 32
- 229920000573 polyethylene Polymers 0.000 claims abstract description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 239000006185 dispersion Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920001684 low density polyethylene Polymers 0.000 claims description 8
- 239000004702 low-density polyethylene Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 abstract description 8
- 238000001035 drying Methods 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000000621 bronchi Anatomy 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
Definitions
- the present invention relates to a carbon planar heating element for a ceiling interior material of a vehicle, and is particularly capable of effectively heating the interior of a vehicle before the engine cooling water of the vehicle is heated in winter and having excellent durability.
- a method of circulating the warm air into the room using a fan is selected after allowing the engine cooling water to flow to the heat exchanger of the heating device.
- the indoor temperature of the vehicle increases and the humidity decreases at the same time, thereby drying the temperature inside the vehicle.
- the vehicle auxiliary heater has been proposed as patent document 0001 (KR10-1028509B1 (2011.04.04)).
- the vehicle auxiliary heater of patent document 0001 has a layer structure, a housing accommodating the layer structure, and a contact lug for connecting the heater to a power source, wherein the layer structure provides electricity to at least one PTC heating element and the PTC heating element. It characterized in that it comprises a heating element having a printed circuit conductor in contact with the PTC heating element on both sides to supply and at least one heat dissipation element connected for heat conduction with the heating element.
- the structure is complicated and the manufacturing cost is high.
- the present invention for solving such a conventional problem is to provide a carbon planar heating element for a ceiling interior material of a vehicle that can effectively heat the inside of the vehicle and has excellent durability before the engine coolant of the vehicle is heated in winter.
- Carbon planar heating element disposed in the interior of the ceiling of the vehicle
- It provides a carbon planar heating element for a ceiling interior material of a vehicle comprising a; electrode formed on both ends of the carbon heating sheet.
- the short polyethylene fibers dispersed in the carbon fiber dispersion composition are made of low density polyethylene.
- the fiber length of the carbon fiber and the polyethylene short fiber dispersed in the carbon fiber dispersion composition is 5 to 30 mm, and the carbon fiber and the polyethylene short fiber are preferably dispersed in a weight ratio of 3 to 7:7 to 3.
- the upper polyethylene sheet and the lower polyethylene sheet are heat-sealed in a state respectively disposed on the upper and lower surfaces of the carbon heating sheet, and in particular, the upper polyethylene sheet and the lower polyethylene sheet are the carbon heating sheet under a negative pressure atmosphere. It is preferable to heat-seal to the upper and lower surfaces of the.
- the carbon planar heating element for a ceiling interior material of a vehicle of the present invention can effectively heat the vehicle interior before the engine coolant of the vehicle is heated in winter and has excellent durability.
- FIG. 1 is a perspective view schematically showing a carbon planar heating element for a ceiling interior material of a vehicle of the present invention
- Figure 2 is a cross-sectional view taken along the line A-A of Figure 1,
- Figure 3 is a photograph showing the completed state of the carbon planar heating element for the ceiling interior material of the present inventors vehicle
- FIG. 4 is a graph showing the results of temperature measurement in a state in which a voltage is supplied to a carbon planar heating element for a ceiling interior material of a vehicle.
- FIG. 1 is a perspective view schematically showing a carbon planar heating element for a ceiling interior material of a vehicle of the present invention.
- the carbon planar heating element 10 for a ceiling interior material of a vehicle of the present invention is largely composed of a carbon heating sheet 110, an electrode 120, and an upper/lower polyethylene sheet 130 as shown in FIG.
- the carbon heating sheet 110 is manufactured by making a carbon fiber dispersion composition in which carbon fibers and polyethylene short fibers are dispersed in water by papermaking and drying.
- the carbon fiber is made of a PAN-based carbon fiber or a pitch-based carbon fiber, the fiber length is preferably made of 5 ⁇ 30mm.
- the fiber length is less than 5mm, the dispersibility of the carbon fiber at the time of papermaking is good, but there is a problem in that the yield is poor and the physical properties such as strength are low, and when it is more than 30mm, the carbon fiber has poor dispersibility and thus a sheet having a uniform basis weight cannot be obtained. .
- the polyethylene short fibers are for imparting the bonding force between the carbon fibers, and it is preferable to use low density polyethylene short fibers having a melting point of 105 to 115°C.
- the low-density polyethylene short fibers are partially fused by thermal compression after papermaking using the carbon fiber dispersion composition to impart bonding force between the carbon fibers.
- carbon fibers and polyethylene short fibers dispersed in the carbon fiber dispersion composition are preferably mixed in a weight ratio of 3 to 7:7:3.
- the bonding strength between carbon fibers is excellent, but the heating temperature is low, making it inappropriate for use as a carbon planar heating element for interior materials of vehicles.
- the heating temperature is low, effectively heating the vehicle interior in winter. It is possible, but the bonding strength between the carbon fibers is not good.
- a dispersant such as sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite
- the electrode 120 is formed on both ends of the carbon heating sheet 110, respectively, as shown in FIG.
- the electrode 120 is adhered to both ends of the carbon heating sheet 110 by a carbon adhesive in order to make electrical contact with the carbon heating sheet 110, it is preferable to be made of a copper tape.
- the upper/lower polyethylene sheet 130 is for preventing the heat generation section from being damaged by durability and damage due to oxidation, etc. of the carbon heating sheet 110, and the carbon heating sheet 110 and the electrode 120 It is fused in a wrapped state.
- the upper polyethylene sheet 130a is disposed on the upper surface of the carbon heating sheet 110, and the lower polyethylene sheet 130b is disposed on the lower surface of the carbon heating sheet 110.
- the upper/lower polyethylene sheet 130 may be made of low density polyethylene, but is preferably made of high density polyethylene to secure chemical, heat stability and durability.
- the upper/lower polyethylene sheet 130 is fused by wrapping the carbon heating sheet 110 by thermal compression. At this time, as the upper/lower polyethylene sheet 130 is fused with the short polyethylene fibers dispersed in the carbon heating sheet 110, the bonding strength between the upper/lower polyethylene sheet 130 and the carbon heating sheet 110 is excellent. Do. In addition, the rims of the upper and lower polyethylene sheets 130 are mutually fused to prevent an oxidation reaction from occurring in the carbon heating sheet 110.
- the upper/lower polyethylene sheet 130 is preferably heat-sealed to the upper and lower surfaces of the carbon heating sheet 110 under a negative pressure atmosphere.
- the upper/lower polyethylene sheet 130 is heat-sealed while the air present in the carbon heating sheet 110 is removed, thereby further oxidizing the carbon heating sheet 110. It can be prevented that there is an effect that can significantly improve the durability.
- PAN-based carbon fibers and low-density polyethylene fibers having a melting point of 110° C. were cut to a length of 20 mm to prepare PAN-based carbon fibers and low-density polyethylene short fibers.
- the carbon-surface heating element was completed by heat-pressing and welding in a state where high-density polyethylene sheets were placed on the upper and lower surfaces of the electrode-bonded carbon-surface heating sheet, and the photograph of the completed carbon-surface heating element is shown in FIG. 3.
- the temperature was measured in a state in which a voltage of 6V was supplied to the finished carbon planar heating elements of CH 01 to CH 05 for 120 sec, and the temperature measurement results are shown in FIG. 4, and the carbon planar heating elements of CH01 to CH 05 were all 20 seconds later. It was confirmed that the temperature was kept constant.
- carbon planar heating elements of CH04 and CH05 are heated to 40 to 42°C, it is considered that they can effectively heat the interior of the vehicle without thermally deforming the interior of the vehicle.
- the carbon planar heating element for a ceiling interior material of a vehicle of the present invention can effectively heat the inside of a vehicle before the engine coolant of the vehicle is heated in winter and has excellent durability.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Air-Conditioning For Vehicles (AREA)
- Resistance Heating (AREA)
Abstract
The present invention relates to a carbon planar heating element for a ceiling interior material of a vehicle, which has excellent durability and is capable of effectively heating the inside of the vehicle before the engine coolant of the vehicle is heated in winter, and in particular, to a carbon planar heating element disposed in the ceiling interior material of the vehicle. The carbon planar heating element for a ceiling interior material of a vehicle comprises: a carbon heating sheet for paper-making and drying a carbon fiber dispersion composition in which carbon fibers and polyethylene short fibers are dispersed in water; and electrodes formed on both ends of the carbon heating sheet.
Description
본 발명은 차량의 천장 내장재용 탄소면상발열체에 관한 것으로서, 특히 겨울철에 차량의 엔진 냉각수가 가열되기 전에 차량 내부를 효과적으로 난방이 가능하고 내구성이 우수한 차량의 천장 내장재용 탄소면상발열체에 관한 것이다.The present invention relates to a carbon planar heating element for a ceiling interior material of a vehicle, and is particularly capable of effectively heating the interior of a vehicle before the engine cooling water of the vehicle is heated in winter and having excellent durability.
종래의 차량 난방의 경우 엔진의 냉각수를 난방 장치의 열교환기에 흐르도록 한 뒤 팬을 이용하여 온풍을 실내로 순환시키는 방법을 선택하고 있다. 하지만 이러한 방식의 경우 차량의 실내 온도 상승과 더불어 습도 저하가 동시에 이루어져 차량 내부의 온도를 건조 시킨다.In the case of conventional vehicle heating, a method of circulating the warm air into the room using a fan is selected after allowing the engine cooling water to flow to the heat exchanger of the heating device. However, in this method, the indoor temperature of the vehicle increases and the humidity decreases at the same time, thereby drying the temperature inside the vehicle.
특히, 최근에는 각종 차량의 엔진 연비향상과 배기가스 저감을 위한 연소효율의 개선 및 연소가스의 온도와 엔진 발열량을 최소화하려는 노력이 증가하는 추세에 있다. 이러한 추세로 인해 엔진 냉각수의 수온이 더욱 낮아져 가용 열원이 감소하게 됨에 따라 실내 난방을 냉각수의 온수 열원에 전적으로 의존하는 차량의 공기조화 시스템에서는 열원 부족을 야기하게 된다.In particular, in recent years, efforts are being made to improve combustion efficiency for improving engine fuel efficiency and reducing exhaust gas of various vehicles, and to minimize the temperature of the combustion gas and the amount of engine heat. Due to this trend, as the water temperature of the engine coolant becomes lower and the available heat source decreases, the air conditioning system of the vehicle, which relies entirely on hot water heat source of the coolant, causes a lack of heat source.
따라서, 엔진 냉각수의 방출 열량에만 의존하는 차량의 난방 시스템은 외기 온도가 낮은 동절기나 혹한기에는 냉각수온이 일정한 온도 이상으로 상승하기 전에적절한 실내난방이 이루어지기 어렵다.Therefore, in a vehicle heating system that relies only on the amount of heat released from the engine coolant, proper indoor heating is difficult to be performed before the coolant temperature rises above a certain temperature in the winter or cold season when the outside temperature is low.
이는 최근 미세먼지로 인한 기관지 및 폐 관련 질환 환자가 급증하는 가운데 이같이 차량 내부를 건조시키는 기존의 난방 방식의 경우 이의 문제점을 더욱 유발시킨다. This causes further problems in the case of the existing heating method of drying the inside of the vehicle as the number of patients with bronchi and lung-related diseases due to fine dust increases rapidly.
그렇기 때문에 적절한 실내난방을 위해서는 공회전 시간이 길어지게 되며, 그 공회전에 따른 배기가스 배출량도 증가하는 문제점이 있다.Therefore, for proper indoor heating, the idling time is prolonged, and there is a problem in that the exhaust gas emission increases according to the idling.
이에 차량 보조히터가 특허문헌 0001(KR10-1028509B1 (2011.04.04)) 등으로 제안된 바 있다. 특허문헌 0001의 차량용 보조히터는 층 구조물, 상기 층 구조물을 수용하는 하우징 및 상기 히터를 전원에 접속하기 위한 컨택트 러그를 갖고, 상기 층 구조물은 적어도 하나의 PTC가열 엘리먼트 및 상기 PTC가열 엘리먼트에 전기를 공급하기 위하여 양 측에서 상기 PTC가열 엘리먼트와 접촉하는 인쇄회로 도체를 구비한 발열 엘리먼트 및 상기 발열 엘리먼트와 열전도를 위해 접속되는 적어도 하나의 방열 엘리먼트를 포함하는 것을 특징으로 한다. 그러나 구조가 복잡하고 제조비용이 높은 문제가 있다.Accordingly, the vehicle auxiliary heater has been proposed as patent document 0001 (KR10-1028509B1 (2011.04.04)). The vehicle auxiliary heater of patent document 0001 has a layer structure, a housing accommodating the layer structure, and a contact lug for connecting the heater to a power source, wherein the layer structure provides electricity to at least one PTC heating element and the PTC heating element. It characterized in that it comprises a heating element having a printed circuit conductor in contact with the PTC heating element on both sides to supply and at least one heat dissipation element connected for heat conduction with the heating element. However, there is a problem that the structure is complicated and the manufacturing cost is high.
이와 같은 종래의 문제점을 해결하기 위한 본 발명은 겨울철에 차량의 엔진 냉각수가 가열되기 전에 차량 내부를 효과적으로 난방이 가능하고 내구성이 우수한 차량의 천장 내장재용 탄소면상발열체를 제공하는 것을 목적으로 한다.The present invention for solving such a conventional problem is to provide a carbon planar heating element for a ceiling interior material of a vehicle that can effectively heat the inside of the vehicle and has excellent durability before the engine coolant of the vehicle is heated in winter.
상기의 목적을 달성하기 위한 본 발명은,The present invention for achieving the above object,
차량의 천장 내장재 내에 배치되는 탄소면상발열체로서,Carbon planar heating element disposed in the interior of the ceiling of the vehicle,
물에 탄소섬유 및 폴리에틸렌 단섬유를 분산시킨 탄소섬유 분산조성물을 초지 및 건조시킨 탄소발열시트와;A carbon heating sheet in which a carbon fiber dispersion composition in which carbon fibers and polyethylene short fibers are dispersed in water is made and dried;
상기 탄소발열시트의 양단부에 각각 형성되는 전극;을 포함하는 것을 특징으로 하는 차량의 천장 내장재용 탄소면상발열체를 제공한다.It provides a carbon planar heating element for a ceiling interior material of a vehicle comprising a; electrode formed on both ends of the carbon heating sheet.
그리고 상기 탄소섬유 분산조성물에 분산된 폴리에틸렌 단섬유는 저밀도 폴리에틸렌으로 이루어지는 것이 좋다.And it is preferable that the short polyethylene fibers dispersed in the carbon fiber dispersion composition are made of low density polyethylene.
상기 탄소섬유 분산조성물에 분산된 탄소섬유 및 폴리에틸렌 단섬유의 섬유장은 5~30mm이고, 탄소섬유 및 폴리에틸렌 단섬유는 3~7:7~3의 중량비로 분산되는 것이 바람직하다.The fiber length of the carbon fiber and the polyethylene short fiber dispersed in the carbon fiber dispersion composition is 5 to 30 mm, and the carbon fiber and the polyethylene short fiber are preferably dispersed in a weight ratio of 3 to 7:7 to 3.
또한 상기 탄소발열시트의 상부면 및 하부면에 각각 배치된 상태로 열융착되는 상측 폴리에틸렌시트 및 하측 폴리에틸렌시트를 포함하고, 특히, 상기 상측 폴리에틸렌시트 및 상기 하측 폴리에틸렌시트는 부압분위기 하에서 상기 탄소발열시트의 상부면 및 하부면에 열융착되는 것이 바람직하다.In addition, it includes an upper polyethylene sheet and a lower polyethylene sheet that are heat-sealed in a state respectively disposed on the upper and lower surfaces of the carbon heating sheet, and in particular, the upper polyethylene sheet and the lower polyethylene sheet are the carbon heating sheet under a negative pressure atmosphere. It is preferable to heat-seal to the upper and lower surfaces of the.
본 발명의 차량의 천장 내장재용 탄소면상발열체는 겨울철에 차량의 엔진 냉각수가 가열되기 전에 차량 내부를 효과적으로 난방이 가능하고 내구성이 우수한 효과가 있다.The carbon planar heating element for a ceiling interior material of a vehicle of the present invention can effectively heat the vehicle interior before the engine coolant of the vehicle is heated in winter and has excellent durability.
도 1은 본 발명의 차량의 천장 내장재용 탄소면상발열체를 개략적으로 나타내는 사시도이고,1 is a perspective view schematically showing a carbon planar heating element for a ceiling interior material of a vehicle of the present invention,
도 2는 도 1의 A - A선에 따른 단면도이고,Figure 2 is a cross-sectional view taken along the line A-A of Figure 1,
도 3은 본 발명인 차량의 천장 내장재용 탄소면상발열체가 완성된 상태를 나타내는 사진이고,Figure 3 is a photograph showing the completed state of the carbon planar heating element for the ceiling interior material of the present inventors vehicle,
도 4는 차량의 천장 내장재용 탄소면상발열체에 전압을 공급한 상태에서의 온도 측정결과를 나타내는 그래프이다.4 is a graph showing the results of temperature measurement in a state in which a voltage is supplied to a carbon planar heating element for a ceiling interior material of a vehicle.
이하, 본 발명의 차량의 천장 내장재용 탄소면상발열체의 실시예를 도면을 참조하여 상세히 설명하면 다음과 같고, 본 발명의 권리범위는 하기의 실시예에 한정되는 것은 아니다.Hereinafter, an embodiment of a carbon planar heating element for a ceiling interior material of a vehicle according to the present invention will be described in detail with reference to the drawings, and the scope of the present invention is not limited to the following embodiments.
도 1은 본 발명의 차량의 천장 내장재용 탄소면상발열체를 개략적으로 나타내는 사시도이다.1 is a perspective view schematically showing a carbon planar heating element for a ceiling interior material of a vehicle of the present invention.
본 발명의 차량의 천장 내장재용 탄소면상발열체(10)는 도 1과 같이 크게, 탄소발열시트(110), 전극(120) 및 상/하측 폴리에틸렌시트(130)를 포함하여 구성된다.The carbon planar heating element 10 for a ceiling interior material of a vehicle of the present invention is largely composed of a carbon heating sheet 110, an electrode 120, and an upper/lower polyethylene sheet 130 as shown in FIG.
먼저, 상기 탄소발열시트(110)는 물에 탄소섬유 및 폴리에틸렌 단섬유를 분산시킨 탄소섬유 분산조성물을 초지 및 건조시켜 제조된다.First, the carbon heating sheet 110 is manufactured by making a carbon fiber dispersion composition in which carbon fibers and polyethylene short fibers are dispersed in water by papermaking and drying.
상기 탄소섬유는 PAN계 탄소섬유 또는 Pitch계 탄소섬유로 이루어지고, 섬유장은 5~30mm로 이루어지는 것이 좋다. 섬유장이 5mm 미만일 경우 초지시 탄소섬유의 분산성은 좋으나 수율이 좋지 못하고 강도 등의 물성이 낮은 문제가 있고, 30mm 초과일 경우 탄소섬유의 분산성이 좋지 못하여 균일한 평량의 시트를 얻지 못하는 문제가 있다.The carbon fiber is made of a PAN-based carbon fiber or a pitch-based carbon fiber, the fiber length is preferably made of 5 ~ 30mm. When the fiber length is less than 5mm, the dispersibility of the carbon fiber at the time of papermaking is good, but there is a problem in that the yield is poor and the physical properties such as strength are low, and when it is more than 30mm, the carbon fiber has poor dispersibility and thus a sheet having a uniform basis weight cannot be obtained. .
그리고 상기 폴리에틸렌 단섬유는 상기 탄소섬유의 상호간의 결합력을 부여하기 위한 것으로, 융점이 105~115℃인 저밀도 폴리에틸렌 단섬유를 사용하는 것이 바람직하다. 상기 탄소섬유 분산조성물을 이용하여 초지한 후 열압착에 의해 상기 저밀도 폴리에틸렌 단섬유가 부분적으로 융착되어 탄소섬유 간 결합력을 부여한다.In addition, the polyethylene short fibers are for imparting the bonding force between the carbon fibers, and it is preferable to use low density polyethylene short fibers having a melting point of 105 to 115°C. The low-density polyethylene short fibers are partially fused by thermal compression after papermaking using the carbon fiber dispersion composition to impart bonding force between the carbon fibers.
특히, 상기 탄소섬유 분산조성물에 분산된 탄소섬유 및 폴리에틸렌 단섬유는 3~7:7:3의 중량비로 혼합되는 것이 바람직하다. 탄소섬유가 적게 사용될 경우 탄소섬유간의 결합력은 우수하나, 발열온도가 낮아 차량 천장 내장재용 탄소면상발열체로서 사용하기에 부적절하고, 탄소섬유가 많이 사용될 경우 발열온도가 낮아 겨울철에 효과적으로 차량 내부를 난방할 수 있으나 탄소섬유간 결합력이 좋지 못하다.In particular, carbon fibers and polyethylene short fibers dispersed in the carbon fiber dispersion composition are preferably mixed in a weight ratio of 3 to 7:7:3. When less carbon fiber is used, the bonding strength between carbon fibers is excellent, but the heating temperature is low, making it inappropriate for use as a carbon planar heating element for interior materials of vehicles. When a lot of carbon fiber is used, the heating temperature is low, effectively heating the vehicle interior in winter. It is possible, but the bonding strength between the carbon fibers is not good.
그리고 상기 탄소섬유 분산조성물에는 분산제, 증점제, 소포제 등이 첨가될 수 있다.In addition, a dispersant, a thickener, an antifoaming agent, etc. may be added to the carbon fiber dispersion composition.
다음으로 상기 전극(120)은 도 1과 같이 상기 탄소발열시트(110) 양단부에 각각 형성된다. 상기 전극(120)은 상기 탄소발열시트(110)에 전기적으로 접촉시키기 위해 상기 탄소발열시트(110)의 양단부에 카본 접착제에 의해 접착되고, 동 테이프로 이루어지는 것이 좋다.Next, the electrode 120 is formed on both ends of the carbon heating sheet 110, respectively, as shown in FIG. The electrode 120 is adhered to both ends of the carbon heating sheet 110 by a carbon adhesive in order to make electrical contact with the carbon heating sheet 110, it is preferable to be made of a copper tape.
그리고 상기 상/하측 폴리에틸렌시트(130)는 상기 탄소발열시트(110)가 산화 등에 의한 내구성 및 손상에 의해 발열구간이 손상되는 것을 방지하기 위한 것으로서, 상기 탄소발열시트(110) 및 전극(120)을 감싼 상태로 융착된다.In addition, the upper/lower polyethylene sheet 130 is for preventing the heat generation section from being damaged by durability and damage due to oxidation, etc. of the carbon heating sheet 110, and the carbon heating sheet 110 and the electrode 120 It is fused in a wrapped state.
상기 상측 폴리에틸렌시트(130a)는 상기 탄소발열시트(110)의 상부면에 배치되고, 상기 하측 폴리에틸렌시트(130b)는 상기 탄소발열시트(110)의 하부면에 배치된다.The upper polyethylene sheet 130a is disposed on the upper surface of the carbon heating sheet 110, and the lower polyethylene sheet 130b is disposed on the lower surface of the carbon heating sheet 110.
상기 상/하측 폴리에틸렌시트(130)는 저밀도 폴리에틸렌으로 이루어질 수 있으나 화학적, 열정 안정성 및 내구성을 확보하기 위해 고밀도 폴리에틸렌으로 이루어지는 것이 좋다.The upper/lower polyethylene sheet 130 may be made of low density polyethylene, but is preferably made of high density polyethylene to secure chemical, heat stability and durability.
상기 상/하측 폴리에틸렌시트(130)는 열압착에 의해 상기 탄소발열시트(110)를 감싼 상태로 융착된다. 이때 상기 상/하측 폴리에틸렌시트(130)는 상기 탄소발열시트(110)에 분산된 폴리에틸렌 단섬유와 융착됨에 따라 상기 상/하측 폴리에틸렌시트(130)와 상기 탄소발열시트(110) 상호간에 접합력이 우수하다. 또한 상기 상/하측 폴리에틸렌시트(130)의 테두리는 상호 융착되어 상기 탄소발열시트(110)에 산화반응이 일어나는 것을 방지한다.The upper/lower polyethylene sheet 130 is fused by wrapping the carbon heating sheet 110 by thermal compression. At this time, as the upper/lower polyethylene sheet 130 is fused with the short polyethylene fibers dispersed in the carbon heating sheet 110, the bonding strength between the upper/lower polyethylene sheet 130 and the carbon heating sheet 110 is excellent. Do. In addition, the rims of the upper and lower polyethylene sheets 130 are mutually fused to prevent an oxidation reaction from occurring in the carbon heating sheet 110.
특히, 상기 상/하측 폴리에틸렌시트(130)는 부압분위기 하에서 상기 탄소발열시트(110)의 상부면 및 하부면에 열융착시키는 것이 바람직하다. 부압분위기 하에서 열융착시킬 경우 상기 탄소발열시트(110) 내에 존재하는 공기가 제거된 상태로 상기 상/하측 폴리에틸렌시트(130)가 열융착되기 때문에 더욱 상기 탄소발열시트(110)의 산화반응이 일어나는 것을 방지할 수 있어 내구성을 크게 향상시킬 수 있는 효과가 있다.In particular, the upper/lower polyethylene sheet 130 is preferably heat-sealed to the upper and lower surfaces of the carbon heating sheet 110 under a negative pressure atmosphere. When heat-sealed under a negative pressure atmosphere, the upper/lower polyethylene sheet 130 is heat-sealed while the air present in the carbon heating sheet 110 is removed, thereby further oxidizing the carbon heating sheet 110. It can be prevented that there is an effect that can significantly improve the durability.
다음으로, 본 발명의 차량의 천장 내장재용 탄소면상발열체의 실험예를 들어 상세히 설명한다.Next, an experimental example of a carbon planar heating element for a ceiling interior material of a vehicle of the present invention will be described in detail.
[실험예][Experimental Example]
PAN계 탄소섬유와 융점이 110℃인 저밀도 폴리에틸렌섬유를 20mm 길이로 절단하여 PAN계 탄소섬유와 저밀도 폴리에틸렌 단섬유를 준비하였다.PAN-based carbon fibers and low-density polyethylene fibers having a melting point of 110° C. were cut to a length of 20 mm to prepare PAN-based carbon fibers and low-density polyethylene short fibers.
그리고 증류수에 하기의 표 1의 중량비로 PAN계 탄소섬유와 저밀도 폴리에틸렌 단섬유를 분산시킨 후 초지하고 건조하여 50×50mm 크기의 탄소면상발열시트를 얻었다.Then, after dispersing the PAN-based carbon fiber and the low-density polyethylene short fiber in the weight ratio of Table 1 below in distilled water, papermaking and drying were performed to obtain a carbon surface heating sheet having a size of 50×50 mm.
| CH01(중량비)CH01 (weight ratio) | CH02(중량비)CH02 (weight ratio) | CH03(중량비)CH03 (weight ratio) | CH04(중량비)CH04 (weight ratio) | CH05(중량비)CH05 (weight ratio) | |
|
탄소섬유 |
33 | 44 | 55 | 66 | 77 |
|
LMPE 단섬유LMPE |
77 | 66 | 55 | 44 | 33 |
다음으로 각각의 탄소면상발열시트의 양측부의 상부면에 카본바인더를 이용하여 2개의 전극을 접합하였고, 전극으로서 동 테이프를 사용하였다.Next, two electrodes were bonded to the upper surfaces of both sides of each carbon-surface heating sheet using a carbon binder, and copper tape was used as the electrode.
그리고 전극이 접합된 탄소면상발열시트의 상부면 및 하부면에 각각 고밀도 폴리에틸렌시트를 배치시킨 상태에서 열압착하여 융착시켜 탄소면상발열체를 완성하였고, 완성된 탄소면상발열체의 사진은 도 3으로 나타냈다.In addition, the carbon-surface heating element was completed by heat-pressing and welding in a state where high-density polyethylene sheets were placed on the upper and lower surfaces of the electrode-bonded carbon-surface heating sheet, and the photograph of the completed carbon-surface heating element is shown in FIG. 3.
완성된 CH 01 내지 CH 05의 탄소면상발열체에 6V의 전압을 120sec동안 공급한 상태에서 온도를 측정하였고, 온도 측정결과를 도 4로 나타냈고, CH01 내지 CH 05의 탄소면상발열체는 모두 20초 후에 일정한 온도를 유지한 사실을 확인하였다.The temperature was measured in a state in which a voltage of 6V was supplied to the finished carbon planar heating elements of CH 01 to CH 05 for 120 sec, and the temperature measurement results are shown in FIG. 4, and the carbon planar heating elements of CH01 to CH 05 were all 20 seconds later. It was confirmed that the temperature was kept constant.
특히 CH04 및 CH05의 탄소면상발열체는 40~42℃로 발열됨에 따라 차량 천장내장재를 열변형시키지 않고 차량 내부에 효과적으로 난방할 수 있을 것이라 사료된다.In particular, as the carbon planar heating elements of CH04 and CH05 are heated to 40 to 42°C, it is considered that they can effectively heat the interior of the vehicle without thermally deforming the interior of the vehicle.
본 발명의 차량의 천장 내장재용 탄소면상발열체는 겨울철에 차량의 엔진 냉각수가 가열되기 전에 차량 내부를 효과적으로 난방이 가능하고 내구성이 우수한 효과가 있다.The carbon planar heating element for a ceiling interior material of a vehicle of the present invention can effectively heat the inside of a vehicle before the engine coolant of the vehicle is heated in winter and has excellent durability.
Claims (6)
- 차량의 천장 내장재 내에 배치되는 탄소면상발열체로서,Carbon planar heating element disposed in the interior of the ceiling of the vehicle,물에 탄소섬유 및 폴리에틸렌 단섬유를 분산시킨 탄소섬유 분산조성물을 초지 및 건조시킨 탄소발열시트와;A carbon heating sheet in which a carbon fiber dispersion composition in which carbon fibers and polyethylene short fibers are dispersed in water is made and dried;상기 탄소발열시트의 양단부에 각각 형성되는 전극;을 포함하는 것을 특징으로 하는 차량의 천장 내장재용 탄소면상발열체.An electrode formed on both ends of the carbon heating sheet; a carbon planar heating element for a ceiling interior material of a vehicle comprising a.
- 제1항에 있어서,According to claim 1,상기 탄소섬유 분산조성물에 분산된 폴리에틸렌 단섬유는 저밀도 폴리에틸렌인 것을 특징으로 하는 차량의 천장 내장재용 탄소면상발열체.Polyethylene short fibers dispersed in the carbon fiber dispersion composition is a low-density polyethylene carbon planar heating element for the interior of the vehicle ceiling.
- 제2항에 있어서,According to claim 2,상기 탄소섬유 분산조성물에 분산된 탄소섬유 및 폴리에틸렌 단섬유의 섬유장은 5~30mm인 것을 특징으로 하는 차량의 천장 내장재용 탄소면상발열체.Carbon fiber heating element for the interior of the ceiling of the vehicle, characterized in that the fiber length of the carbon fibers and polyethylene short fibers dispersed in the carbon fiber dispersion composition is 5 ~ 30mm.
- 제3항에 있어서,According to claim 3,상기 탄소섬유 분산조성물에 분산된 탄소섬유 및 폴리에틸렌 단섬유는 3~7:7~3의 중량비로 분산되는 것을 특징으로 하는 차량의 천장 내장재용 탄소면상발열체.Carbon surface heating element for ceiling interior materials of a vehicle, characterized in that the carbon fibers and polyethylene short fibers dispersed in the carbon fiber dispersion composition are dispersed in a weight ratio of 3-7:7-3.
- 제4항에 있어서,The method of claim 4,상기 탄소발열시트의 상부면 및 하부면에 각각 배치된 상태로 열융착되는 상측 폴리에틸렌시트 및 하측 폴리에틸렌시트를 포함하는 것을 특징으로 하는 차량의 천장 내장재용 탄소면상발열체.A carbon surface heating element for a ceiling interior material of a vehicle, comprising an upper polyethylene sheet and a lower polyethylene sheet which are heat-sealed in a state respectively disposed on upper and lower surfaces of the carbon heating sheet.
- 제5항에 있어서,The method of claim 5,상기 상측 폴리에틸렌시트 및 상기 하측 폴리에틸렌시트는 부압분위기 하에서 상기 탄소발열시트의 상부면 및 하부면에 열융착되는 것을 특징으로 하는 차량의 천장 내장재용 탄소면상발열체.The upper polyethylene sheet and the lower polyethylene sheet is a carbon surface heating element for a ceiling interior material of a vehicle, characterized in that it is heat-sealed to the upper and lower surfaces of the carbon heating sheet under a negative pressure atmosphere.
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| KR1020180147646A KR20200049417A (en) | 2018-10-31 | 2018-11-26 | Carbon surface heating element for interior ceiling of vehicle |
| KR10-2018-0147646 | 2018-11-26 |
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| EP2017545B1 (en) | 2007-07-18 | 2012-04-25 | Eberspächer catem GmbH & Co. KG | Electric heating device |
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- 2018-11-26 KR KR1020180147646A patent/KR20200049417A/en not_active Application Discontinuation
- 2018-11-28 WO PCT/KR2018/014777 patent/WO2020111302A1/en active Application Filing
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| JP2703691B2 (en) * | 1992-04-17 | 1998-01-26 | 北川工業株式会社 | Heating element |
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| JP2014229459A (en) * | 2013-05-22 | 2014-12-08 | 一陽染工株式会社 | Planar heating element and method for manufacturing the same |
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