KR101011014B1 - Process for preparing separator material for a fuel cell having high electrical conductivity, separator for a fuel cell and feul cell - Google Patents

Process for preparing separator material for a fuel cell having high electrical conductivity, separator for a fuel cell and feul cell Download PDF

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KR101011014B1
KR101011014B1 KR1020080055759A KR20080055759A KR101011014B1 KR 101011014 B1 KR101011014 B1 KR 101011014B1 KR 1020080055759 A KR1020080055759 A KR 1020080055759A KR 20080055759 A KR20080055759 A KR 20080055759A KR 101011014 B1 KR101011014 B1 KR 101011014B1
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fuel cell
carbon black
separator
weight
mixing
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KR20090129704A (en
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임남익
김정헌
이호섭
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한국타이어 주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0223—Composites
    • H01M8/0226—Composites in the form of mixtures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0213—Gas-impermeable carbon-containing materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0221—Organic resins; Organic polymers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Fuel Cell (AREA)

Abstract

본 발명은 연료전지용 고전도성 분리판 소재의 제조방법, 이를 적용한 연료전지 분리판과 연료전지를 제공하기 위한 것으로, 본 발명은 수지와 카본블랙을 미리 혼합하여 만든 카본블랙 마스터배치를 연료전지 분리판 소재를 제조하는데 적용하여 카본블랙의 분산성을 향상시키고, 더 나아가 전기전도도가 우수한 연료전지 분리판과 연료전지를 제조하기 위한 것이다.The present invention is to provide a method for manufacturing a highly conductive separator material for a fuel cell, a fuel cell separator and a fuel cell applying the same, the present invention is a carbon black master batch made of a mixture of a resin and carbon black fuel cell separator plate It is applied to manufacture a material to improve the dispersibility of carbon black, and furthermore to produce a fuel cell separator and a fuel cell excellent in electrical conductivity.

연료전지, 분리판, 카본블랙, 마스터배치, 압출 혼합 Fuel Cell, Separator, Carbon Black, Masterbatch, Extrusion Mixing

Description

연료전지용 고전도성 분리판 소재의 제조방법, 그로부터 제조된 연료전지 분리판 및 연료전지{Process for preparing separator material for a fuel cell having high electrical conductivity, separator for a fuel cell and feul cell}Process for preparing separator material for a fuel cell having high electrical conductivity, separator for a fuel cell and feul cell

본 발명은 연료전지용 고전도성 분리판 소재의 제조방법, 그로부터 제조된 연료전지 분리판 및 연료전지에 관한 것이다. 더욱 상세하게는, 본 발명은 수지와 카본블랙을 미리 혼합하여 만든 카본블랙 마스터배치를 연료전지 분리판 소재를 제조하는데 적용하여 카본블랙의 분산성을 향상시키고, 더 나아가 전기전도도가 우수한 연료전지 분리판 소재를 제조하는 방법과, 상기 방법으로 제조한 연료전지용 분리판 및 연료전지에 관한 것이다.The present invention relates to a method for producing a highly conductive separator material for a fuel cell, a fuel cell separator and a fuel cell produced therefrom. More specifically, the present invention is applied to the carbon black masterbatch prepared by mixing the resin and carbon black in advance to produce a fuel cell separator plate material to improve the dispersibility of the carbon black, furthermore excellent fuel cell separation A method for producing a sheet material, and a separator and a fuel cell for a fuel cell produced by the above method.

일반적으로 연료전지란, 연료인 수소와 산소의 전기화학적 반응에 의해 연소과정 없이 화학적 에너지를 직접 전기 에너지로 변환시키는 에너지 변환장치이다. 연료전지의 핵심인 스택을 구성하고 있는 것이 막전해질 조립체(membrane electronic assembly)와 분리판(bipolar plate)이다. 이 중 분리판은 수소 및 산소 공급, 촉매반응에 의해 발생된 전자를 이동시키는 통로 역할, 각 단위전지 간 절연 유지를 위한 분리 역할을 수행하게 된다. In general, a fuel cell is an energy conversion device that converts chemical energy directly into electrical energy without a combustion process by an electrochemical reaction between hydrogen and oxygen as fuels. What constitutes a stack, which is the core of a fuel cell, is a membrane electronic assembly and a bipolar plate. Among them, the separator serves as a passage for transferring electrons generated by hydrogen and oxygen, a catalyst reaction, and a separation role for maintaining insulation between unit cells.

이러한 연료전지용 분리판에 요구되는 물성에는 전기 전도도, 강도, 가스투과도 등이 있으며 이 중 연료전지의 핵심 역할과 관련된 전기 전도도가 가장 중요하다고 할 수 있으며, 이러한 전기 전도도를 증가시키기 위해 수지에 흑연 및 카본블랙과 같은 도전성 필러를 충전하여 연료 전지용 분리판을 제조하고 있다.The properties required for the separator for fuel cells include electrical conductivity, strength, and gas permeability. Among them, electrical conductivity related to the core role of the fuel cell is the most important, and graphite and resin may be used to increase the electrical conductivity. A separator for a fuel cell is manufactured by filling a conductive filler such as carbon black.

분리판 성형에 이용되는 소재의 혼합/제조 시 전기 전도도를 향상시키기 위한 도전성 필러로써 흑연 및 카본블랙 등을 충전하게 되며 보통은 카본블랙, 수지, 흑연 및 첨가제들이 거의 같은 시기에 함께 첨가/혼합된다. 예를 들어, 열가소성 분리판 소재 혼합의 경우 보통 압출 공정을 통해 이루어지는데 이때 투입되는 수지, 카본블랙, 흑연, 첨가제들이 1차 압출 공정에서 투입/혼합되어 분리판 소재를 제조하게 되고, 이렇게 혼합 제조된 소재를 통해 압축 및 사출 성형 등으로 분리판을 성형 제조하게 된다. As a conductive filler to improve the electrical conductivity when mixing / manufacturing the materials used for forming the separator, graphite and carbon black are filled. Usually, carbon black, resin, graphite and additives are added / mixed together at about the same time. . For example, in the case of mixing a thermoplastic separator material, the extrusion is generally performed through an extrusion process, in which resin, carbon black, graphite, and additives are added / mixed in a first extrusion process to prepare a separator material. The separator is molded and manufactured by compression and injection molding.

그런데 카본블랙은 흑연보다 수지와의 상용성이 좋지 않아 기존 기술과 같은 정도의 혼합으로는 충분히 분산되기 어렵다. 카본블랙의 불균일한 분산성으로 전기 저항을 감소시킬 수 있다고 알려져 있으므로 카본블랙의 분산성을 향상시키게 되면 전기 전도도 또한 더 향상시킬 수 있게 된다.However, carbon black is less compatible with the resin than graphite, so it is difficult to be sufficiently dispersed by the same level of mixing as the existing technology. It is known that the non-uniform dispersibility of the carbon black can reduce the electrical resistance, so if the dispersibility of the carbon black is improved, the electrical conductivity can be further improved.

이에 본 발명은 연료 전지용 분리판의 전기 전도도를 향상시키기 위해 균일 분산이 어려운 카본블랙의 분산성을 향상시키는 것을 기술적 과제로 한다.Accordingly, an object of the present invention is to improve the dispersibility of carbon black, which is difficult to uniformly disperse, in order to improve the electrical conductivity of the separator for fuel cell.

즉, 본 발명은 상기와 같은 기술적 과제를 해결하기 위하여 수지와 카본블랙 을 미리 혼합하여 만든 카본블랙 마스터배치를 연료전지 분리판 소재를 제조하는데 적용하여 카본블랙의 분산성을 향상시키고, 더 나아가 전기전도도가 우수한 연료전지 분리판과 연료전지를 제조하는 것을 그 목적으로 한다. That is, the present invention is applied to the carbon black masterbatch prepared by mixing the resin and carbon black in advance to manufacture the fuel cell separator material in order to solve the technical problem as described above to further improve the dispersibility of the carbon black, furthermore It is an object of the present invention to manufacture a fuel cell separator and a fuel cell having excellent conductivity.

이와 같은 본 발명의 목적을 달성하기 위한 연료전지용 고전도성 분리판 소재의 제조방법은, 수지에 카본블랙을 압출 혼합 공정 또는 배치 혼합 공정에 의해 혼합하며, 이때 카본블랙 마스터 배치 중량 대비 17 ~ 24중량%의 카본블랙을 혼합하여 카본블랙 마스터배치를 제조하는 단계; 상기 카본블랙 마스터 배치 제조 시 카본블랙의 분산성 향상을 더욱 증대시키기 위해 필러 분산제를 0.5 ~ 2중량% 첨가하는 단계; 및 상기 단계에서 제조된 카본블랙 마스터 배치와 70~85중량%의 흑연을 압출 혼합 공정 또는 배치 혼합 공정에 의해 혼합하되 혼합단계 및 성형단계에서의 윤활 특성을 부여하기 위해 윤활제를 첨가해 주는 단계로 이루어지는 것을 특징으로 한다.In order to achieve the object of the present invention, a method for manufacturing a highly conductive separator material for a fuel cell may include mixing carbon black with a resin by an extrusion mixing process or a batch mixing process, wherein the carbon black master batch weight is 17 to 24 weight. Preparing a carbon black masterbatch by mixing% carbon black; Adding 0.5 to 2% by weight of a filler dispersant to further increase the dispersibility of the carbon black when the carbon black master batch is manufactured; And mixing the carbon black master batch prepared in the step with 70 to 85% by weight of graphite by an extrusion mixing process or a batch mixing process, but adding a lubricant to impart lubricating properties in the mixing step and the forming step. Characterized in that made.

본 발명의 연료전지용 분리판 소재의 제조방법은 카본블랙의 분산성을 향상시키기 위하여 첨부 도면 중 도 1에 나타낸 바와 같은 카본블랙 마스터배치를 제조하여 적용하는 것으로, 연료전지 분리판의 가장 중요한 물성 중 하나인 전기 전도도를 향상시킬 수 있어 연료전지의 전력 효율을 높일 수 있는 장점이 있다.The manufacturing method of the fuel cell separator plate material of the present invention is to manufacture and apply a carbon black masterbatch as shown in Figure 1 of the accompanying drawings in order to improve the dispersibility of the carbon black, among the most important physical properties of the fuel cell separator plate One can improve the electrical conductivity has the advantage of increasing the power efficiency of the fuel cell.

이와 같은 본 발명을 첨부한 도면에 의거하여 더욱 상세히 설명하면 다음과 같다. When described in more detail based on the accompanying drawings of the present invention as follows.

본 발명에 따른 연료전지용 고전도성 분리판 소재의 제조방법에서, 첫번째 혼합 단계는, 수지에 카본블랙만을 압출 공정 또는 배치 혼합 공정에 의해 용융 혼합하며 이때 지방산 에스테르 혼합물 또는 지방산 아마이드 혼합물 등의 필러 분산제를 전체 총 중량을 기준으로 0.5~2중량% 첨가하여 카본블랙이 수지에 보다 균일하게 분산되도록 하기 위한 카본블랙 마스터배치 제조 공정이다. In the method for producing a highly conductive separator material for a fuel cell according to the present invention, the first mixing step is melt mixing only carbon black into an resin by an extrusion process or a batch mixing process, wherein a filler dispersant such as a fatty acid ester mixture or a fatty acid amide mixture is used. It is a carbon black masterbatch manufacturing process to add 0.5 to 2% by weight based on the total total weight so that the carbon black is more uniformly dispersed in the resin.

보통, 소재의 70~85중량% 이상을 차지하는 흑연 및 첨가제들이 보통 카본블랙과 동시에 혼합되는 종래기술에서는 카본블랙이 균일하게 분산되기 어렵다. 그러나, 수지에 17 ~ 24중량%의 카본블랙만을 혼합하는 카본블랙 마스터배치 제조 시에는 카본블랙이 보다 균일하게 분산될 수 있다. 여기서 상기 카본블랙의 혼합량은 카본블랙마스터배치를 기준으로 한 것이다. Usually, carbon black is difficult to uniformly disperse in the prior art in which graphite and additives, which account for more than 70 to 85% by weight of the material, are usually mixed with carbon black at the same time. However, carbon black may be more uniformly dispersed in the production of a carbon black masterbatch in which only 17 to 24% by weight of carbon black is mixed with the resin. Herein, the mixing amount of the carbon black is based on the carbon black master batch.

여기서, 혼합되는 카본블랙의 중량은 2차 혼합(카본블랙 마스터배치와 흑연 및 첨가제 혼합)까지 완료하였을 때 제조하고자 하는 분리판 소재의 최종 배합비가 되도록 계산하여 배합해야 하며, 제조하고자 하는 분리판 소재의 최종 배합비가 달라지게 되면 카본블랙 마스터배치의 카본블랙 함량 역시 변화시켜 제조하여 원하는 최종 분리판의 배합비를 제조할 수 있다. Here, the weight of the carbon black to be mixed should be calculated and blended to be the final blending ratio of the separator material to be prepared when the secondary mixing (carbon black masterbatch and graphite and additives mixing) is completed, and the separator material to be prepared When the final compounding ratio of the carbon black master batch is also changed by changing the carbon black content of the desired final separation plate can be prepared.

두번째 혼합 단계로, 이와 같이 제조된 카본블랙 마스터배치와 흑연을 용융 혼합한다. 이때는 첫번째 혼합 단계와 달리 필러(카본블랙, 흑연)의 고충전(70 ~ 80중량%)으로 인해 혼합단계 및 사출성형단계에서 소재의 흐름성을 향상시킬 필요가 있으므로 폴리프로필렌 왁스, 폴리에틸렌 왁스 또는 아마이드 왁스와 같은 왁스 윤활제를 전체 총 중량을 기준으로 0.1~2중량%, 가량 첨가하여, 혼합 단계에서의 소재 흐름성 및 사출 성형에서의 성형성을 개선하는 것이 바람직하다. 이와 같은 두번째 혼합 단계에서 카본블랙을 2차 혼합이 이루어지므로 더 균일한 분산을 하게 되어 첨부 도면 중 도 2에 나타낸 바와 같이 이와 같은 방법으로 제조된 분리판의 전기 전도도가 향상된 것을 확인할 수 있다. In the second mixing step, the carbon black masterbatch prepared in this manner and graphite are melt mixed. At this time, unlike the first mixing step, polypropylene wax, polyethylene wax or amide is required because of the high filling (70 to 80% by weight) of the filler (carbon black, graphite) due to the need to improve the flowability of the material in the mixing step and the injection molding step. A wax lubricant such as wax is preferably added in an amount of 0.1 to 2% by weight, based on the total total weight, to improve material flowability in the mixing step and moldability in injection molding. Since the secondary mixing of the carbon black is made in the second mixing step as described above, more uniform dispersion can be confirmed, and as shown in FIG. 2, the electrical conductivity of the separator prepared in this manner can be improved.

본 발명에 따른 연료전지용 고전도성 분리판 소재는 상기와 같은 방법으로 제조된 소재를 성형하여서 제조하며, 상기 연료전지용 분리판을 적용하여서 연료전지를 제조할 수 있다.The highly conductive separator material for a fuel cell according to the present invention may be manufactured by molding a material manufactured by the above method, and a fuel cell may be manufactured by applying the separator for the fuel cell.

이상과 같은 본 발명을 실시예를 통하여 더욱 상세히 설명하면 다음과 같으며, 본 발명은 다음의 실시예에 명시된 방법 및 배합비에 한정되지 않음을 명확히 한다.The present invention as described above will be described in more detail with reference to the following examples, and the present invention is not limited to the methods and compounding ratios specified in the following examples.

실시예Example

흑연 75중량%, 카본블랙 5중량% 및 수지로서 폴리프로필렌 20중량%로 구성된 열가소성 분리판을 제조하기 위하여, 첫번째 단계로서 압출 공정을 통해서 수지와 카본블랙을 먼저 혼합하여 카본블랙 마스터 배치를 제조하되, 수지 80중량%와 카본블랙 20중량%를 혼합하였다. 제조하고자 하는 최종 분리판의 조성이 흑연 75중량%, 카본블랙 5중량% 및 폴리프로필렌 수지 20중량%이므로, 흑연을 혼합해 주는 2차 혼합단계에서 흑연 75중량%와 카본블랙 마스터배치를 혼합하였을 때 상기한 최종 분리판의 조성이 되도록 하려면 카본블랙 마스터배치는 수지와 카본블랙의 함량이 각각 80중량%, 20중량%가 계산된다.In order to prepare a thermoplastic separator consisting of 75% by weight of graphite, 5% by weight of carbon black and 20% by weight of polypropylene as a resin, a carbon black master batch was prepared by first mixing resin and carbon black through an extrusion process as a first step. 80% by weight of the resin and 20% by weight of carbon black were mixed. 75 wt% of graphite, 5 wt% of carbon black, and 20 wt% of polypropylene resin were mixed, so 75 wt% of graphite and carbon black masterbatch were mixed in the second mixing step of mixing graphite. When the composition of the final separator is the carbon black master batch, the resin and carbon black content of 80% by weight and 20% by weight, respectively.

또한, 이 혼합단계에서 소수성으로 인해 분산이 어려운 카본블랙의 분산성을 향상시키기 위해 지방산 에스테르 혼합물 또는 지방산 아마이드 혼합물과 같은 필러 분산제를 전체 총 중량을 기준으로 0.5 ~ 2중량% 흑연에 첨가하는 것이 바람직하며, 이와 같은 방법으로 카본블랙 마스터배치를 펠렛화하여 제조하였다.In addition, in order to improve the dispersibility of carbon black, which is difficult to disperse due to hydrophobicity in this mixing step, it is preferable to add a filler dispersant such as a fatty acid ester mixture or a fatty acid amide mixture to 0.5 to 2 wt% graphite based on the total weight. In this way, it was prepared by pelletizing the carbon black masterbatch.

두번째 단계로, 상기와 같이 제조된 카본블랙 마스터배치 펠렛을 다시 압출 공정을 통해 흑연과 용융 혼합하였다. 이때의 배합비는 카본블랙 마스터배치 25중량%와 흑연 75중량%로 하면 최종 분리판의 조성인 흑연 75중량%, 카본블랙 5중량% 및 폴리프로필렌 수지 20중량%가 된다. 또한, 이때 필러(카본블랙, 흑연)의 고함량(75중량%)으로 인해 혼합단계의 소재 흐름성과 사출성형에서의 성형성을 개선하기 위해 왁스 윤활제를 1중량% 첨가하였다.In the second step, the carbon black masterbatch pellets prepared as described above were melt mixed with graphite through an extrusion process. At this time, the mixing ratio of 25% by weight of carbon black masterbatch and 75% by weight of graphite is 75% by weight of graphite, 5% by weight of carbon black, and 20% by weight of polypropylene resin. In addition, at this time, due to the high content (75% by weight) of the filler (carbon black, graphite), 1% by weight of a wax lubricant was added to improve material flowability in the mixing step and moldability in injection molding.

이와 같이 두번째 단계를 거쳐 흑연 75중량%, 카본블랙 5중량% 및 수지 20중량% 인 열가소성 분리판 소재를 제조하였고, 사출 성형을 통해 최종 제품인 분리판을 성형하였다.Thus, a thermoplastic separator plate material of 75 wt% graphite, 5 wt% carbon black, and 20 wt% resin was manufactured through the second step, and the final product separator plate was molded through injection molding.

비교예Comparative example

상기 실시예와 동일한 소재 및 동일한 배합비로 실시하였으나 첫번째 단계인 카본블랙 마스터배치 제조를 실시하지 않았다.Although the same material and the same compounding ratio as in the above embodiment was carried out, the carbon black master batch was not prepared.

즉, 실시예의 두번째 단계에서 카본블랙 마스터배치 대신 수지와 카본블랙을 혼합하여 결과적으로 흑연 75중량%, 카본블랙 5중량%, 수지 20중량%를 한번에 압출 혼합하여 열가소성 분리판 소재를 제조하였고 실시예와 동일하게 분리판을 성형하였다. That is, in the second step of the embodiment, the resin and carbon black were mixed instead of the carbon black masterbatch, and as a result, 75% by weight of graphite, 5% by weight of carbon black, and 20% by weight of resin were extruded and mixed to prepare a thermoplastic separator material. The separator was molded in the same manner.

첨부 도면 중 도 2는 실시예의 분리판과 비교예의 분리판의 전기전도도를 비교한 그래프이다. 비교예의 분리판의 전기 전도도에 비해 실시예의 분리판이 약 10 S/cm 증가되었음을 알 수 있다.2 of the accompanying drawings is a graph comparing the electrical conductivity of the separator of the Example and the separator of the Comparative Example. It can be seen that the separator of the example was increased by about 10 S / cm compared to the electrical conductivity of the separator of the comparative example.

도 1은 본 발명에 따른 연료전지용 분리판을 제조하기 위한 카본블랙마스터배치를 촬영한 사진이다.1 is a photograph of a carbon black master batch for manufacturing a separator for a fuel cell according to the present invention.

도 2는 첨부 도면 중 도 2는 실시예의 분리판과 비교예의 분리판의 전기전도도를 비교한 그래프이다.2 is a graph comparing the electrical conductivity of the separator of the Example and the separator of the Comparative Example of the accompanying drawings.

Claims (4)

수지, 카본블랙의 혼합시 분산성 향상을 위해 지방산 에스테르 혼합물 또는 지방산 아마이드 혼합물의 필러분산제를 첨가하고 혹연을 혼합한 후 소재 흐름성 및 사출 성형성을 개선시키기 위해 폴리프로필렌 왁스, 폴리에틸렌 왁스 또는 아마이드 왁스의 왁스 윤활제를 첨가하여 연료전지 분리판 소재를 제조하는 방법에 있어서,Addition of filler dispersant of fatty acid ester mixture or fatty acid amide mixture to improve dispersibility when mixing resin and carbon black, and polypropylene wax, polyethylene wax or amide wax to improve material flow and injection moldability after mixing In the method for producing a fuel cell separator material by adding a wax lubricant, 상기 수지와 카본블랙은 압출식 또는 배치식에 의해 용융 혼합하여 카본블랙 마스터배치의 총 중량 기준 17~24중량%의 전도성 카본블랙을 포함하는 카본블랙 마스터 배치를 1단계로 제조한 후에 흑연은 2단계로 전체 총 중량 기준 70~85중량%를 압출식 또는 배치식으로 상기 카본블랙마스터배치에 용융 혼합하는 것을 특징으로 하는 연료전지용 분리판 소재의 제조방법.The resin and carbon black are melt-mixed by extrusion or batch to prepare a carbon black master batch including 17 to 24% by weight of conductive carbon black based on the total weight of the carbon black masterbatch. Method of manufacturing a separator cell material for a fuel cell, characterized in that the melt-blended mixture 70 ~ 85% by weight based on the total weight in the step to the carbon black master batch by extrusion or batch. 삭제delete 청구항 1의 연료 전지용 분리판 소재를 적용하여서 제조된 것을 특징으로 하는 연료 전지용 분리판.A separator for a fuel cell, which is manufactured by applying the separator plate material for fuel cell of claim 1. 청구항 3에 따른 연료 전지용 분리판을 적용하여서 제조된 것을 특징으로 하는 연료 전지.A fuel cell manufactured by applying the separator plate for fuel cell according to claim 3.
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