Preparation of Fe4[Fe(CN)6]3Coated on Mica or TiO2/Mica for Infrared Reflective Blue Pigments and Isolation-heat Properties of These Paints
Fe4[Fe(CN)6]3가 코팅된 Mica 또는 TiO2/Mica 적외선 반사용 청색안료 제조 및 이 도료의 차열 특성 평가

Ha-Young Jung, Dae Sung Kim, Hyun-Jin Lee, Seung-Ho Lee, Hyung Mi Lim, Byung-Ki Choi, Kwang-Jung Kang, Jin-Sub Choi
2013 Korean Journal of Materials Research  
Fe 4 [Fe(CN) 6 ] 3 coated on a mica or TiO 2 /mica surface as infrared reflective blue pigment was prepared by a hydrothermal method. Fe 4 [Fe(CN) 6 ] 3 , used as coloring agent, was uniformly coated on mica or TiO 2 /mica under the optimized condition of a 1.2 : 1 weight ratio between iron(III) chloride hexahydrate and potassium ferrocyanidetrihydrate at the initial pH level of 4.5 at 70 o C. The infrared (IR)-reflective pigments were characterized by SEM, Zeta-potenial, FT-IR, and UV-VIS NIR
more » ... pectrophotometry. Especially the CIE color coordinate and total solar reflectance(TSR) properties of the pigments were investigated in relation to variation of the coating and coated substrate thicknesses. Isolation-heat paint was prepared with 20 wt% blue pigments fully dispersed in acryl-urethane resin and several additives to coat the film uniformly. The films were also measured with CIE color coordinate, TSR, and the surface temperature was recorded by an isolation-heat measuring system. The pigments and films of Fe 4 [Fe(CN) 6 ] 3 coated on mica and TiO 2 /mica showed high TSR values compared with the TSR value of Fe 4 [Fe(CN) 6 ] 3 itself. According to the increase of TSR value, the property of isolation-heat is effective. To realize the optimal blue color, we applied the the pigment to TiO 2 coated mica(TM(b)) which has blueish interference color. The pigment of Fe 4 [Fe(CN) 6 ] 3 coated on TM(b) shows a strong blue color compared with that of Fe 4 [Fe(CN) 6 ] 3 coated on TiO 2 / Mmca(TM(w)), which has a whitish interference color.
doi:10.3740/mrsk.2013.23.12.672 fatcat:6ckwx6udkng2pgo66qsnfis7w4