폐 LCD판넬로부터 붕규산유리 발포체 제조를 위한 원료 유리 제조

오치훈; 박윤국; 이철태; Chi-Hoon Oh; Yoon-Kook Park; Chul-Tae Lee

Applied Chemistry for Engineering, Vol.27, No.4, 371-379, August, 2016

DOI10.14478/ace.2016.1038 Export Citation

폐 LCD판넬로부터 붕규산유리 발포체 제조를 위한 원료 유리 제조

Preparation of Feed Glass Materials for Producing a Foamed Borosilicate Glass Body from Waste LCD Panel

오치훈, 박윤국, 이철태 ^†

단국대학교 공학부 화학공학전공

Chi-Hoon Oh, Yoon-Kook Park, and Chul-Tae Lee^†

Department of Chemical Engineering, Dankook University, Gyeonggi 16890, Korea

E-mail:

초록

사용 후 발생되는 폐 LCD판넬용 유리의 재활용 방안을 마련하고자 별도의 전처리 없이 폐 LCD판넬을 습식분쇄함으로서 발포체 제조용 원료유리로 사용가능한 폐 붕규산유리의 회수 방법을 조사하였으며, 이렇게 회수된 폐 붕규산유리를 사용하여 발포체의 제조를 시도하였다. 입도 270 mesh 이하의 크기로 분쇄 조절된 폐 붕규산유리를 대상으로 폐 붕규산분말 100 g에 대해 발포제로서 탄소분을 0.3 중량 분율, 추가 발포조제로서 Na2CO3, Na2SO4, CaCO3를 각각 1.5 중량 분율이 되도록 첨가한 원료 유리분말을 발포소성온도 950 ℃에서 20 min간 발포를 진행함으로서 밀도가 0.3g/cm3 이하되는 발포체를 제조할 수 있었다. 또한 원료 유리에 추가적으로 SiO2 또는 H3BO3를 첨가함으로서 얻어지는 발포체에 효과적으로 개기공을 형성할 수 있었으며, 개기공의 형성은 흡음 등 새로운 기능을 가진 발포체의 제조 가능성을 보여주었다.

In this article, the foamed body of glass was manufactured from the waste borosilicate glass produced by wet pulverization process without additional pretreatment which can be used as a recycling method for waste LCD panel glass. Each 100 g of pulverized waste borosilicate glass with the size of less than 270 mesh were mixed with 0.3 weight fraction of carbon and 1.5 weight fraction of Na2CO3, Na2SO4 and CaCO3 and let them foamed for 20 minutes at 950 ℃ to manufacture the foamed body having the density of less than 0.3 g/cm3. Additionally, adding SiO2 or H3BO3 to the mixture enabled the foamed body to have efficient formation of open pores which showed the possibility for producing the foamed body with new functionalities such as sound absorption.

Keywords:waste LCD pannel;borosilicate glass;foaming;foamed glass

[References]

Stevens GC, Goosey M, Materials Used in Manufacturing Electrical and Electronic Products. In: R.E. Hester and R.M. Harrison, (des.). Electronic Waste Management, 40-74, Royal Soc. of Chem., Cambridge (2008),
Kopacek B, ReLCD : Recycling and Re-Use of LCD Panels, Proceedings of 19th Waste Management Conference of the IWMSA. (Waste Con 2008), October 6-11, Durban, South Africa (2008).
Kiyoshi S, Tadashi N, Method for treating waste liquid crystal Panel, JP Patent 3 589 936 (2004).
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Takatsu H, Ohnishi H, Kobayashi K, Becker W, Seki M, Tazume M, Nakajima T, Saito H, Simon-Hettich B, Naemura S, Mol. Cryst. Liq. Cryst., 364, 171 (2001)
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Lee CT, Prospect. Ind. Chem., 3(2), 1 (2000)
Lee CT, Lee JS, Jang MH, Lee SY, J. Korean Ind. Eng. Chem., 20(3), 266 (2009)
Lee CT, Park TM, Kim JM, Appl. Chem. Eng., 23(2), 195 (2012)
Lee CT, J. Ind. Eng. Chem., 19(6), 1916 (2013)
Lee CT, J. Ind. Eng. Chem., 20(5), 3089 (2014)

[Referenced By]

[Related Articles]

[1] Stevens GC, Goosey M, Materials Used in Manufacturing Electrical and Electronic Products. In: R.E. Hester and R.M. Harrison, (des.). Electronic Waste Management, 40-74, Royal Soc. of Chem., Cambridge (2008),

[2] Kopacek B, ReLCD : Recycling and Re-Use of LCD Panels, Proceedings of 19th Waste Management Conference of the IWMSA. (Waste Con 2008), October 6-11, Durban, South Africa (2008).

[3] Kiyoshi S, Tadashi N, Method for treating waste liquid crystal Panel, JP Patent 3 589 936 (2004).

[4] Yamabuchi K, Komoda T, Kaida K, Izumi A, Horiuchi T, Takabe S, Katayama T, Method and device for parting glass substrate, liquid crystal panel, and liquid crystal panel manufacturing device, PCT/JP2002/011540 (2003).

[5] Takatsu H, Ohnishi H, Kobayashi K, Becker W, Seki M, Tazume M, Nakajima T, Saito H, Simon-Hettich B, Naemura S, Mol. Cryst. Liq. Cryst., 364, 171 (2001)

[6] Martin R, Simon-Hettich B, Beckedr W, Safe Recovery of Liquid Crystal Displays (LCDs) in compliance with WEEE, Electronics Goes Green 2004, 147-151 (2004).

[7] Homma T, Ubusawa T, Furuyama T, Morikaku A, Tanaka K, Process for recycling useful metal, JP Patent 2,241,381 (2008).

[8] Martin R, Use of Liquid Crystal Displays and Methods for Their Utilization, EU. Patent 2 082 817 (2009).

[9] LCD Industries Research Committee, Japan Electronics and Information Technology Industries Association: Recycling of LCD Panel, http://home.jeita.or.jp/device/lirec/english/enviro/recycle.htm.

[10] Lee CT, Prospect. Ind. Chem., 3(2), 1 (2000)

[11] Lee CT, Lee JS, Jang MH, Lee SY, J. Korean Ind. Eng. Chem., 20(3), 266 (2009)

[12] Lee CT, Park TM, Kim JM, Appl. Chem. Eng., 23(2), 195 (2012)

[13] Lee CT, J. Ind. Eng. Chem., 19(6), 1916 (2013)

[14] Lee CT, J. Ind. Eng. Chem., 20(5), 3089 (2014)