Korean Chemical Engineering Research

  • 제53권6호
  • /
  • Pages.762-769
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  • 2015
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  • 0304-128X(pISSN)
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  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
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이산화티탄 나노입자로부터 고굴절 하드코팅 도막의 제조

Preparation of Hard Coating Films with High Refractive Index from Titania Nanoparticles

  • Kim, Nam Woo (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Ahn, Chi Yong (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
  • 투고 : 2015.09.21
  • 심사 : 2015.10.01
  • 발행 : 2015.12.01
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초록

직경 2~3 nm 크기를 갖는 이산화티탄 나노입자가 산성 용액에서 titanium tetraisopropoxide(TTIP)의 가수분해 반응을 조절함에 의해 합성되었다. 생성된 이산화티탄 나노입자를 졸-겔법에 의해 3-glycidoxypropyl trimethoxysilane(GPTMS)과 반응시킴에 의해 유-무기 혼성 코팅 용액이 제조되었다. 그 후 코팅 용액을 기재인 polycarbonate(PC) 시트 위에 스핀 코팅시키고, $120^{\circ}C$에서 열경화 시켜 고굴절률 하드코팅 도막이 제조되었다. 코팅 도막은 가시광선 영역에서 90%의 높은 광학적 투과율을 보였으며 2H의 연필경도를 나타내었다. 또한 코팅 용액 내의 이산화티탄 나노입자의 함량이 4%에서 25%로 증가됨에 따라 코팅 필름의 굴절률은 633 nm 파장에서 1.502로부터 1.584로 향상되었다.

The titania ($TiO_2$) nanoparticles with a diameter 2?3 nm were synthesized by controlling hydrolysis of titanium tetraisopropoxide (TTIP) in acid solution. Organic-inorganic hybrid coating solutions were prepared by reacting the titania nanoparticles with 3-glycidoxypropyl trimethoxysilane (GPTMS) by the sol-gel method. The hard coating films with high refractive index were obtained by curing thermally at $120^{\circ}C$ after spin-coating the coating solutions on the polycarbonate (PC) sheets. The coating films showed high optical transparency of 90% in the visible range and exhibited a pencil hardness of 2H. Also, the refractive index at 633 nm wavelength of coating films enhanced from 1.502 to 1.584 as the weight content of titania nanoparticles in the coating solutions increased from 4% to 25%.

키워드

참고문헌

  1. Choi, J. J., Kim, N. U., Ahn, C. Y. and Song, K. C., "Preparation of Hard Coating Films with High Refractive Index Using Organic-Inorganic Hybrid Coating Solutions", Korean Chem. Eng. Res., 52(3), 388-394(2014). https://doi.org/10.9713/kcer.2014.52.3.388
  2. Lee, M. S. and Jo, N. J., "Abrasion-Resistance and Optical Properties of Sol-Gel Derived Organic-Inorganic Hybrid Coatings, " J. Korean Ind. Eng. Chem., 12(6), 643-648(2001).
  3. Kwak, S., Shim, J., Yoon, H. G. and Lee, K. H., "Inorganic Thin Film Coating on the Dispaly Plastic Substrate, " Polymer Sci. Tech., 14(2), 181-191(2003).
  4. Yu, D. S., Kim, S. G., Lee, J. H. and Ha, J. W., "A Study on the Thermally Curable Hard Coating with High Performance", Applied Chemistry, 9(2), 13-16(2005).
  5. Medda, S. K. and De, G., "Inorganic-Organic Nanocomposite Based Hard Coatings on Plastics Using In Situ Generated Nano $SiO_2$ Bonded with ${\equiv}Si-O-Si-PEO$ Hybrid Network, " Ind. Eng. Chem. Res., 48, 4326-4333(2009). https://doi.org/10.1021/ie801632k
  6. You, Y. S., Chung, K. H., Kim, Y. M., Kim, J. H. and Seo, G., "Deactivation and Regeneration of Titania catalyst Supported on Glass Fiber in the Photocatalytic Degradation of Toluene", Korean J. Chem. Eng., 20(1), 58-64(2003). https://doi.org/10.1007/BF02697185
  7. Nakayama, N. and Hayashi, T., "Preparation of $TiO_2$ Nanoparticles Surface-Modified by Both Carboxylic Acid and Amine: Dispersibility and Stabilization in Organic Solvents", Colloids and Surfaces A, 317, 543-550(2008). https://doi.org/10.1016/j.colsurfa.2007.11.036
  8. Cheong, I. Y., Cho, K. I., Cheong, S. H., Park, H. N. and Song, K. C., "Preparation of Hard Coating Solutions with High Refractive Index for Polycarbonate Sheet by the Sol-Gel Method," Korean Chem. Eng. Res., 45(4), 335-339(2007).
  9. ASTM D3359, "Standard Test Methods for Measuring Adhesion by Tape Test", ASTM International, 927-929(1997).
  10. Song, K. C. and Pratsinis, S. E., "The Effect of Alcohol Solvents on the Porosity and Phase Composition of Titania", J. Colloid Interface Sci., 231, 289-298(2000). https://doi.org/10.1006/jcis.2000.7147