이산화티탄 나노입자로부터 고굴절 하드코팅 도막의 제조

김남우; 안치용; 송기창; Nam Woo Kim; Chi Yong Ahn; Ki Chang Song

Korean Chemical Engineering Research, Vol.53, No.6, 762-769, December, 2015

DOI10.9713/kcer.2015.53.6.762 Export Citation

이산화티탄 나노입자로부터 고굴절 하드코팅 도막의 제조

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

김남우, 안치용, 송기창 ^†

건양대학교 화공생명학과, 34052 충남 논산시 대학로 121

Nam Woo Kim, Chi Yong Ahn, and Ki Chang Song^†

Department of Chemical and Biochemical Engineering, Konyang University, 121 Daehak-ro, Nonsan, Chungnam 34052, Korea

E-mail:

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 스핀코팅시키고, 120 oC에서 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 (TiO2) 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 oC 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%.

Keywords:Organic-Inorganic Hybrid Coating Solutions;Hard Coating Films;Titania Nanoparticles;3-Glycidoxypropyl Trimethoxysilane;High Refractive Index;Sol-Gel Method

[References]

Choi JJ, Kim NU, Ahn CY, Song KC, Korean Chem. Eng. Res., 52(3), 388 (2014)
Lee MS, Jo NJ, J. Korean Ind. Eng. Chem., 12(6), 643 (2001)
Kwak S, Shim J, Yoon HG, Lee KH, Polym. Sci. Technol., 14(2), 181 (2003)
Yu DS, Kim SG, Lee JH, Ha JW, Appl. Chem., 9(2), 13 (2005)
Medda SK, De G, Ind. Eng. Chem. Res., 48(9), 4326 (2009)
You YS, Chung KH, Kim YM, Kim JH, Seo G, Korean J. Chem. Eng., 20(1), 58 (2003)
Nakayama N, Hayashi T, Colloids Surf. A: Physicochem. Eng. Asp., 317, 543 (2008)
Cheong IY, Cho KI, Cheong SH, Park HN, Song KC, Korean Chem. Eng. Res., 45(4), 335 (2007)
ASTM D3359, “Standard Test Methods for Measuring Adhesion by Tape Test”, ASTM International, 927-929(1997).
Song KC, Pratsinis SE, J. Colloid Interface Sci., 231(2), 289 (2000)

[Related Articles]

[1] Choi JJ, Kim NU, Ahn CY, Song KC, Korean Chem. Eng. Res., 52(3), 388 (2014)

[2] Lee MS, Jo NJ, J. Korean Ind. Eng. Chem., 12(6), 643 (2001)

[3] Kwak S, Shim J, Yoon HG, Lee KH, Polym. Sci. Technol., 14(2), 181 (2003)

[4] Yu DS, Kim SG, Lee JH, Ha JW, Appl. Chem., 9(2), 13 (2005)

[5] Medda SK, De G, Ind. Eng. Chem. Res., 48(9), 4326 (2009)

[6] You YS, Chung KH, Kim YM, Kim JH, Seo G, Korean J. Chem. Eng., 20(1), 58 (2003)

[7] Nakayama N, Hayashi T, Colloids Surf. A: Physicochem. Eng. Asp., 317, 543 (2008)

[8] Cheong IY, Cho KI, Cheong SH, Park HN, Song KC, Korean Chem. Eng. Res., 45(4), 335 (2007)

[9] ASTM D3359, “Standard Test Methods for Measuring Adhesion by Tape Test”, ASTM International, 927-929(1997).

[10] Song KC, Pratsinis SE, J. Colloid Interface Sci., 231(2), 289 (2000)