어트리션밀을 이용한 CoAl2O4 나노 무기 안료의 제조 및 특성 평가
Preparation and characterization of CoAl2O4 blue ceramic nano pigments by attrition milling
2
조회
0
다운로드
7
인용
0
참고문헌
초록
CoAl2O4는 열적 및 화학적으로 매우 안정한 물질이며 독특한 광학적 특성으로 인해 도자기 제품, 유리, 페인트,플라스틱을 장식하는 세라믹 착색제로 사용되어져 왔다. 본 연구에서는 착체중합법(Polymerized complex method)과 고상합성법(Solid state reaction)을 이용하여 단상의 CoAl2O4 청색 무기 안료를 합성하였고, 잉크젯 프린팅용 잉크로의 응용 시 노즐 막힘 및 분산안정성과 같은 문제점을 방지하기 위해 고에너지 밀링 공정 중 하나인 어트리션밀을 이용하여 입자를 미세화하였다. 밀링 공정은 직경 1 mm의 지르코니아 볼을 이용하여 BPR(Ball to powder weight ratio) 100 : 1, 800 rpm의 조건에서 3시간 동안 진행되었다. 합성된 안료는 XRD, FE-SEM, TEM, PSA, 그리고 CIE L*a*b* 측정을 통하여 어트리션밀링전후의 특성을 분석하였다. XRD 측정 결과 단상의 CoAl2O4 청색 무기 안료가 합성되었고, 고에너지 밀링 공정을 통하여100~200 nm의 입자 크기를 가지는 청색 나노 무기 안료를 얻었다.
Abstract
Cobalt aluminate (CoAl2O4) is a highly stable pigment with excellent resistance to light, weather, etc., which has resulted in widespread use as a ceramic pigment. Due to the unique optical characteristics, CoAl2O4 is generally used as a coloring agent to decorate porcelain products, glass, paints and plastics. Here, CoAl2O4 pigments were synthesized by polymerized complex method and solid state reaction. Then CoAl2O4 pigment were grinded using the attrition milling with 1 mm size zirconia ball for 3 hours. The attrition milling process was performed at the constant speed of 800 rpm and ball to powder weight ratio (BPR) was 100 : 1. The characteristics of synthesized pigment were analyzed by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), particle size analyser (PSA) and CIE L*a*b*. The XRD patterns of CoAl2O4 show single phase spinel structure. The particle size of CoAl2O4 measured by FE-SEM, TEM and PSA analysis was in the range of 100~200 nm. The blue color of obtained CoAl2O4 pigments could be confirmed through CIE L*a*b* measurement.
참고문헌 (15)
- P.H. Bolt, "Formation of nickel, cobalt, copper, and iron aluminates from α- and γ-alumina- supported oxides: A comparative study", J. Solid State Chem, 135, pp.59~ (1998)
- J.M.F. Colinas, "Kinetics of solid-state spinel formation: Effect of cation coordination preference", J. Solid State Chem, 109, pp.43~ (1994)
- W.S. Cho, "Crystallization of ceramic pigment CoAl2O4 nanocrystals from Co-Al metal organic precursor", J. Alloys Compd, 287, pp.87~ (1999)
- N. Ouahdi, "Synthesis of CoAl2O4 by double decomposition reaction between LiAlO2 and molten KCoCl3", J. Eur. Ceram, 28, pp.1987~ (2008)
- W. Lv, "Sonochemical synthesis of cobalt aluminate nanoparticles under various preparation parameters", Ultrason. Sonochem, 17, pp.793~ (2010)
- J. Azurdia, "Synthesis and characterization of mixed-metal oxide nanopowders along the CoOx-Al2O3 tie line using liquid-feed flame spray pyrolysis", J. Am. Ceram. Soc, 89, pp.2749~ (2006)
- D. Gardini, "Nano-sized ceramic inks for drop-on-demand ink-jet printing in quadrichromy", J. Nanosci. Nanotechnol, 8, pp.1979~ (2008)
- I. Fasaki, "Ultrasound assisted preparation of stable waterbased nanocrystalline TiO2 suspensions for photocatalytic applications of inkjet-printed films", Appl. Catal. A, (411-412), pp.60~ (2012)
- Z. Hu, "Nanocolorants: A novel class of colorants, the preparation and performance characterization", Dyes Pigm, 76, pp.173~ (2008)
- P.M.T. Cavalcante, "Colour performance of ceramic nano-pigments", Dyes Pigm, 80, pp.226~ (2009)
- I. Nettleship, "Chemical preparation and phase stability of Ca2SiO4 and Sr2SiO4", J. Eur. Ceram, 11, pp.291~ (1993)
- 손보람, "착체중합법을 이용한 (Ni,Mg)Al2O4 Cyan 나노 무기안료 합성", 한국세라믹학회지, 50(3), pp.195~200 (2013), 한국세라믹학회
- D.W. Lee, "Low temperature synthesis of BaCeO3 nano powders by the citrate process", Materials Letters, 57, pp.3346~ (2003)
- R. Muñoz, "Environmental study of Cr2O3-Al2O3 green ceramic pigment synthesis", J. Eur. Ceram, 24, pp.2087~ (2004)
- W. Hajjaji, "Cr-doped perovskite and rutile pigments derived from industrial by-products", Chem. Eng. J, 171, pp.1178~ (2011)