Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Haze Characteristics of Mica Coated with Magnesium Oxide

산화마그네슘을 코팅한 마이카의 헤이즈 특성

  • Kang, Kuk-Hyoun (Department of Engineering Chemistry, Chungbuk National University) ;
  • Hyun, Mi-Ho (Department of Engineering Chemistry, Chungbuk National University) ;
  • Lee, Dong-Kyu (Department of Engineering Chemistry, Chungbuk National University)
  • 강국현 (충북대학교 공과대학 공업화학과) ;
  • 현미호 (충북대학교 공과대학 공업화학과) ;
  • 이동규 (충북대학교 공과대학 공업화학과)
  • Received : 2014.08.11
  • Accepted : 2015.01.08
  • Published : 2015.01.31
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Abstract

Inorganic composite particles have excellent physical and chemical characteristics and have been applied in various industries. Recently, many studies have examined the optical properties, such as light scattering, refraction, transmission characteristics, by coating organic-inorganic materials on a substrate, such as mica. Mica is widely applied as a pigment, plastics, painted products, and ceramics because of its high chemical stability, durability and non-toxicity. Magnesium oxide has a range of properties, such as high light transmittance, corrosion resistance and non-toxicity, and it is used as an optical material and polymer additives. To use the optical properties of mica and magnesium oxide, mica was coated with magnesium hydroxide by a dissolution and recrystallization process. In this study, the optimal conditions for the haze value of the particles were found by adjusting the amount of precursors and pH. Magnesium hydroxide layers were formed on the surfaces of mica and converted to MgO after calcination at $400^{\circ}C$ for 4 h. The results showed that the value of MgO-coated mica haze can be controlled easily by the amount of the magnesium hydroxide and pH. The optical properties of the inorganic composite powder were analyzed using a hazemeter and the highest haze value was 85.92 % at pH 9. The physicochemical properties of the synthesized composite was analyzed by SEM, XRD, EDS, and PSA.

무기 복합 입자는 독특한 물리 화학적 특성에 따라 다양한 산업 분야에 응용된다. 최근 마이카와 같은 판상 기질에 유 무기 물질을 코팅하여 광 산란, 굴절 및 투과 특성 등의 광학적 특성을 이용하는 연구가 활발히 진행되고 있다. 마이카는 높은 화학적 안정성, 내후성 및 무독성의 입자로 안료, 플라스틱, 페인트, 세라믹 등에 널리 적용되고 있다. 산화마그네슘은 높은 빛 투과율, 내식성, 무독성을 갖고 있어, 광학재료 및 고분자 첨가제 등으로 이용되고 있다. 마이카와 산화마그네슘의 광학적 특성을 이용하기 위하여 수산화마그네슘을 용해 재결정하여 마이카 표면에 코팅하였다. 전구체의 농도, pH 변화 등의 공정 변수를 조절하여 적합한 헤이즈 값을 갖는 입자를 합성하였다. 결과적으로 마이카 표면에 수산화마그네슘 층이 형성되고, 4시간 동안 $400^{\circ}C$에서 소성하면 산화마그네슘으로 변환된다. 본 연구에서는 pH와 수산화마그네슘의 첨가량 조절로 헤이즈 값을 쉽게 제어 할 수 있는 것을 보여주었다. 제조된 분체의 광학적 특성은 탁도계(Hazemeter)를 이용해 측정하였고, pH 9에서 가장 높은 값인 85.92%를 얻었다. 복합분체의 물리 화학적 특성은 XRD, SEM, EDS 및 PSA를 통해 확인하였다.

Keywords

References

  1. H. Y. Du, C. X. Liu, J. Y. Sun, Q. R. Chen, "An investigation of angle-dependent optical properties of multi-layer structure pigments formed by metal-oxide -coated mica", Powder Technol., 185, pp. 291-296, 2008. DOI: http://dx.doi.org/10.1016/j.powtec.2007.10.031
  2. V. Stengl, J. Subrt, S. Bakardjieva, A. Kalendova, P. Kalenda, "The preparation and characteristics of pigments based on mica coated with metal oxides", Dyes Pigm., 58, pp. 239-244, 2003. DOI: http://dx.doi.org/10.1016/S0143-7208(03)00086-X
  3. P. Kalenda, A. Kalendova, V. Stengl, P. Antos, J. Subrt, Z. Kvaca, S. Bakardjieva, "Properties of surface-treated mica in anticorrosive coatings", Prog. Org. Coat., 49, pp. 137-145, 2004. DOI: http://dx.doi.org/10.1016/j.porgcoat.2003.09.003
  4. J. Chen, X. Shi, B. Han, "The Preparation and characteristics of cobalt blue colored mica titania pearlescent pigment by microemulsions", Dyes Pigm., 75, pp. 766-769, 2007. DOI: http://dx.doi.org/10.1016/j.dyepig.2006.08.020
  5. M. Ren, H. Yin, Y. Hang, C. Ge, Y. Zhang, A. Wang, L. Yu, T. Jiang, Z. Wu, "Deposition of colored inorganic coating layers on lamellar sericite surface and the pigmentary performences", Powder Technol., 214, pp. 31-37, 2011. DOI: http://dx.doi.org/10.1016/j.powtec.2011.07.025
  6. J. R. Tan, Y. F. Han, W. X. Hou, X. Z. Chen, X. S. Fu, "The preparation and characteristics of cobalt blue mica coated titania pearlscent pigment", Dyes Pigm., 52, pp. 215-222, 2002. DOI: http://dx.doi.org/10.1016/S0143-7208(01)00086-9
  7. R. Emmert, "Quantification of the soft-focus effect", Cosmet. Toiletries, 111, pp. 57, 1996.
  8. T. Suzuki, "Improvement of transparency and luster of synthetic mica powder for cosmetics", Fragrance Journal, 30, pp. 45, 2002.
  9. D. Tiwari, H. U. Kim, S. M. Lee, "Removal behavior of sericite for Cu(II) and Pb(II) from aqueous solutions : Batch and column studies", Sep. Purif. Technol., 57, pp. 11-16, 2007. https://doi.org/10.1016/j.seppur.2007.03.005
  10. J. O. Kim, S. M. Lee, C. Jeon, "Adsorption characteristics of sericite for cesium ions from an aqueous solution", Chem. Engres. Res. Des., 92, pp. 368-374, 2013. DOI: http://dx.doi.org/10.1016/j.cherd.2013.07.020
  11. K. S. Lee, K. H. Kang, J. H. Lee, D. K. Lee. "Preparation and Chrominance of Metal Oxide Coated Titania/Mica Pearlescent Pigment", J. of Korean Oil Chemists' Soc., 130, 2, pp. 233-243, 2013. DOI: http://dx.doi.org/10.12925/jkocs.2013.30.2.233
  12. D. K. Lee, J. H. Lee, S. Y. Park, "Preparation and Characteristics of Carmine coated Mica Pearlescent Pigment" J. of Korean Oil Chemists' Soc., 24, 4, pp. 511-517, 2008.
  13. J. P. Lv, L. Z. Qiu, B. J. Qu, "Controlled Synthesis of Magnesium Hydroxide Nanoparticles with Different Morphological Structures and Related Properties in Flame Retardant Ethylene-Vinyl Acetate Blends", Nanotechnology, 15, 11, pp. 1576, 2004. DOI: http://dx.doi.org/10.1088/0957-4484/15/11/035
  14. C. Sanchez, B. Julian, P. Belleville and M. Popall, "Applications of Hybrid Organic-Inorganic Nanocomposites", J. Mater.Chem., 15, pp 3559-3592, 2005. DOI: http://dx.doi.org/10.1039/b509097k
  15. K. H. Kang, D. K. Lee, "Synthesis of magnesium oxysulfate whiskers using triethanolamine as a morphology control agent", J. Ind. Eng. Chem., 20, 4, pp. 2580-2583, 2014. DOI: http://dx.doi.org/10.1016/j.jiec.2013.10.044
  16. Y. N. Hong, X. H. Zhanga, J. M. Wua, L. Q. Weia, X. G. Liuc, B. S. Xua, "The use of CTAB to improve the crystallinity and dispersibility of ultrafine magnesium hydroxide by hydrothermal route" Powder Technol., 188, 2, pp. 128-132, 2008. DOI: http://dx.doi.org/10.1016/j.powtec.2008.04.024
  17. J. P. Lv, L. Z. Qiu, B. J. Qu, "Controlled growth of three morphological structures of magnesium hydroxide nanoparticles by wet precipitation method" Journal of Crystal Growth, 267, pp. 676-684, 2004. DOI: http://dx.doi.org/10.1016/j.jcrysgro.2004.04.034
  18. M. V. Dagaonkar, A. A. C. M. Beenackers, V. G. Pangarkar, "Absorption of sulfur dioxide into aqueous reactive slurries of calcium and magnesium hydroxide in a stirred cell", Chem. Eng. Sci., 56, 3, pp. 1095-1101, 2001. DOI: http://dx.doi.org/10.1016/S0009-2509(00)00326-2
  19. K. H. Kang, D. K. Lee, "Synthesis and Characteristics of Magnesium Hydroxide using Microwave" K. J. Met. Mater., 51, 1, pp. 77-82, 2012. https://doi.org/10.3365/KJMM.2013.51.1.077
  20. A. Kashimoto, "Control of the optical properties of powder materials and the application for base make-up cosmetics", Fragrance Journal, 30, pp. 19, 2002.