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Fe<sub>2</sub>O<sub>3</sub>가 코팅된 판상 mica의 적외선 반사용 적색안료 제조 및 차열도료의 열특성
이현진,김대성,이승호,임형미,최병기,강광중,정재일,조금성,Lee, Hyun Jin,Kim, Dae Sung,Lee, Seung-Ho,Lim, Hyung Mi,Choi, Byung-Ki,Kang, Kwang-Jung,Jeong, Jae Il,Cho, Kum-Sung 한국재료학회 2015 한국재료학회지 Vol.25 No.2
$Fe_2O_3$ coated plate mica($Fe_2O_3$/mica) for infrared reflectance red pigment was prepared under hydrothermal treatment. $Fe_2O_3$ was perfectly coated on mica via the difference of surface charge between $Fe_2O_3$ and mica particles at pH 3. $Fe_2O_3$/mica was then calcined at $800^{\circ}C$ to stabilize the coated layer on mica. The infrared(IR) reflectance pigments were characterized by X-ray diffraction, FE-SEM, zeta potential, and a UV-Vis-NIR spectrophotometer. In particular, the CIE color coordinate and IR reflectance properties of $Fe_2O_3$/mica pigments were investigated in relation to the thickness variation of the $Fe_2O_3$ layer coated on mica of various lateral sizes. The isolation-heat red paints containing the pigments were prepared and optimized with a thinner, settling agent, and dispersant. Then, the films were made. The thermal property of isolation-heat on these films was observed through the relationship of the IR reflectance value, which was based on the variation of the $Fe_2O_3$ layer's thickness coated on mica and mica's lateral size as IR reflectance pigment. With an increase in IR reflectance on these films, the thermal property of isolation-heat was effectively enhanced.