Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Heat Shield Property of Nanostructural-regulated Fe2O3/TiO2 Composites Filled with Polyacrylate Paint

나노구조 변화에 의한 Fe2O3/TiO2 복합재료를 충전한 Poly Acrylate 도료의 열차단 특성

  • Kim, Dae Won (School of Chemical Engineering, Chonbuk National University) ;
  • Ma, Young Kil (School of Chemical Engineering, Chonbuk National University) ;
  • Kim, Jong Seok (School of Chemical Engineering, Chonbuk National University)
  • 김대원 (전북대학교 화학공학부) ;
  • 마영길 (전북대학교 화학공학부) ;
  • 김종석 (전북대학교 화학공학부)
  • Received : 2019.12.20
  • Accepted : 2020.01.03
  • Published : 2020.02.10
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Abstract

Fe2O3 nanoparticles with the mixed structure of cubic and nanorod were synthesized by precipitation, hydrothermal, sol-gel method, etching process and heat treatment. Fe2O3/TiO2 core-shell (CS) of type Fe2O3@TiO2 composite was fabricated on a 20 nm nanolayer of TiO2 coated on the surface of Fe2O3 nanoparticles. Fe2O3/TiO2 yolk-shell (YS) composite was prepared by chemical etching and heat treatment of Fe2O3/TiO2 CS nanoparticles. Physical properties of Fe2O3, Fe2O3@TiO2 CS and Fe2O3@TiO2 YS nanoparticles were characterized by FE-SEM, HR-TEM and X-ray diffraction. The solar reflectance, commission internationale de l'Elcairage (CIE) color coordinate and heat shield temperatures of Fe2O3, CS and YS type Fe2O3@TiO2 pigments filled with poly acrylate (PA) paints were investigated by UV-Vis-NIR spectrometer and homemade heat shield temperature measuring device. The Fe2O3@TiO2 YS red pigment filled PA composite exhibited excellent near infrared light reflecting performance and also reduced the heat shield temperature of 13 ℃ than that of Fe2O3 filled counterparts.

본 연구에서는 침전과 수열처리에 의해 나노입방체와 나노막대구조를 갖는 Fe2O3 나노입자를 합성하였다. Fe2O3 나노 입자 표면에 TiO2가 20 nm 두께로 코팅된 Fe2O3/TiO2 core-shell (CS) 복합재료를 합성하였다. Fe2O3/TiO2 CS를 화학적 에칭과 열처리에 의해 Fe2O3/TiO2 CS에서 Fe2O3/TiO2 yolk-shell (YS) 형태의 복합재료를 제조하였다. FE-SEM, HR-TEM, XRD 분석을 통하여 Fe2O3와 Fe2O3/TiO2 CS 및 Fe2O3/TiO2 YS 안료의 물리적 특성을 측정하였다. 안료를 poly acrylate (PA) 수지에 혼합한 도료들의 일사반사율과 색상변화는 UV-Vis-NIR 분석으로 차열 온도는 실험실에서 제작한 차열 온도 측정기를 통해 측정하였다. Fe2O3/TiO2 YS 적색 안료를 사용한 PA 도료는 우수한 근적외선 반사율을 보였으며, Fe2O3 안료를 사용한 도료에 비해 차열 온도가 13 ℃ 감소하였다.

Keywords

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