Abstract

최근 각광받고 있는 디지털 프린팅을 이용한 디자인 기법은 세밀한 표현과 다양한 이미지 구현이 가능하고, 원료의 낭비가 적어 효율성이 높은 장점을 가지고 있다. 디지털 프린팅 공정에서는 cyan, magenta, yellow, black이 기본적인 디지털 4원색으로 사용되며, 도자제품에 적용되는 세라믹 안료의 경우 <TEX>$1000^{\circ}C$</TEX> 이상의 고온 소성이 가능하도록 우수한 열적, 유약 안정성과 발색 특성이 요구된다. 본 연구에서는 고상합성법을 이용하여 <TEX>$CaO-SnO_2-Cr_2O_3-SiO_2$</TEX> 조성의 pink-red 고온발색 무기안료를 합성하였다. <TEX>$Ca(Sn,Cr)SiO_5$</TEX> 세라믹 안료의 합성 조건에 따른 물성을 XRD, SEM, PSA, FT-IR를 이용하여 분석하였고, Cr 치환량 변화가 <TEX>$Ca(Sn,Cr)SiO_5$</TEX> 무기 안료의 발색 거동에 미치는 영향을 Uv-vis.와 CIE 표색계 값(<TEX>$L^*a^*b^*$</TEX>)을 기준으로 한 색도측정을 통해 관찰하였다. Digital ink-jet printing system has many advantages such as fast and fine printing of various images, high efficiency and low cost process. Generally digital ink-jet printing requires ceramic pigments of cyan, magenta, yellow and black with thermal and glaze stability above <TEX>$1000^{\circ}C$</TEX> for the application of porcelain product design. In this study, pink-red colored <TEX>$CaO-SnO_2-Cr_2O_3-SiO_2$</TEX> pigment was synthesized using solid state reaction. The synthesis conditions of <TEX>$Ca(Cr,Sn)SiO_5$</TEX> pigment such as annealing temperature, amount of mineralizer and non-stoichiometric composition were optimized. Crystal structure and morphology of the obtained <TEX>$Ca(Cr,Sn)SiO_5$</TEX> pigment were analyzed using XRD, SEM, PSA, FT-IR and effect of Cr substitution on the pigment color was analyzed using Uv-vis. spectrophotometer and CIE <TEX>$L^*a^*b^*$</TEX> measurement.

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