Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Infrared Emissivity of Stainless Steel Coated with Composites of Copper Particle and m-Aramid Resin

구리입자/메타아라미드 수지 복합재료 도포 스테인리스 철판의 적외선 방사 특성

  • Oh, Chorong (Division of Semiconductor and Chemical Engineering, Chonbuk National University) ;
  • Kim, Sunmi (Aerospace Engineering Department, Chonbuk National University) ;
  • Park, Gyusang (Aerospace Engineering Department, Chonbuk National University) ;
  • Choi, Seongman (Aerospace Engineering Department, Chonbuk National University) ;
  • Lee, Dai Soo (Division of Semiconductor and Chemical Engineering, Chonbuk National University) ;
  • Myoung, Rhoshin (Aerospace Engineering Department, Gyeongsang National University) ;
  • Kim, Woncheol (Agency for Defense Development)
  • Received : 2016.09.26
  • Accepted : 2016.11.22
  • Published : 2017.02.01
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Abstract

As a part of studies to lower the infrared (IR) emissivity from the surface of exhaust nozzle in the turbo jet engine, stainless steel plate was coated with copper particle/meta-aramid resin composites and the IR emissivity of the plate were investigated. Binders of filler particles based on synthetic polymers generally undergo thermal decomposition before $300^{\circ}C$. It was found that the meta aramid resin was thermally stable after the test at $320^{\circ}C$, confirming the excellent thermal stability. Contents of copper particles in the composites were varied from 0 to 70% by volume. It was observed that the copper particle/meta aramid resin composites showed good adhesion after the tests at $320^{\circ}C$. The specimen coated with the composite containing 50 vol% of copper particles showed the lowest IR emissivity, 0.6, at $320^{\circ}C$.

항공기 엔진 배기노즐 표면으로부터 적외선 방사를 낮추기 위한 연구의 일환으로 스테인리스 스틸 표면을 구리입자/메타 아라미드 수지 복합재료로 도포하여 $320^{\circ}C$에서 적외선 방사율을 측정하였다. 일반적인 충전제 입자 바인더 합성수지의 경우 $300^{\circ}C$이전에서 대부분 열분해를 일으키지만 메타 아라미드 수지는 $320^{\circ}C$에서도 열안정성을 보여 구리입자 분산 내열성 매트릭스 수지로 적합한 것으로 나타났다. 본 연구에서는 첨가한 구리입자 함량은 부피기준으로 0 ~ 70% 까지 변화시켰다. 구리입자/메타아라미드 복합재료 수지로 도포된 시편은 $320^{\circ}C$에서 적외선 방사율 측정 실험 후에 접착력이 우수하였다. 그리고 구리입자 함량이 부피 기준으로 50%인 구리입자/메타 아라미드 수지를 도포함으로써 시편의 $320^{\circ}C$ 적외선 방사율을 0.6 까지 낮출 수 있었다.

Keywords

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