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http://dx.doi.org/10.14478/ace.2016.1092

Preparation of Borosilicate Foamed Glass Body with Sound Absorption Characteristics by the Recycling Waste Liquid Crystal Display Glass  

Lee, Chul-Tae (Department of Chemical Engineering, Dankook University)
Publication Information
Applied Chemistry for Engineering / v.27, no.6, 2016 , pp. 612-619 More about this Journal
Abstract
In this research, an alumino-borosilicate foamed glass with sound absorption property was prepared using the waste borosilicate glass obtained from the recycling process of waste liquid crystal display (LCD) panel. A 100 g of pulverized waste borosilicate glass with the particle size of under 325 mesh, was mixed with 0.3 g (wt/wt) of graphite, each 1.5 g (wt/wt) of $Na_2CO_3$, $Na_2SO_4$ and $CaCO_3$ as a foaming agent, and 6.0 g (wt/wt) of $H_3BO_3$ and 3.0 g (wt/wt) of $Al_2O_3$ as a pore control agent. Following mixture was under the foaming process for 20 minutes at a foaming temperature of $950^{\circ}C$. The result yielded the foaming agent with 45% of the opened porosity and 0.5-0.7 of the sound absorbing coefficient. This alumino-borosilicate foamed glass with the sound absorption property showed excellent physical and mechanical properties such as density of $0.21g/cm^3$, bending strength of $55N/cm^2$ and compression strength of $298N/cm^2$ which can be ideally used as sound absorption materials with heat-resisting and chemical-resisting property.
Keywords
waste LCD pannel; borosilicate foamed glass; sound absorption;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 C.-T. Lee, J.-S. Lee, S.-Y. Lee, and M.-H. Jang, Physical and chemical properties of waste LCD glass as raw materials for the production of foamglass, J. Korean Ind. Eng. Chem., 20(3), 266-272 (2009).
2 C.-T. Lee, T.-M. Park, and J.-M. Kim, Foaming process of waste LCD glass for the recovery of valuable materials from waste LCD pannel, Appl. Chem. Eng., 23(2), 195-203 (2012).
3 C.-T. Lee, Produdction of alumino-borosilicate foamed glass body from waste LCD, J. Ind. Eng. Chem., 19(6), 1916-1925 (2013).   DOI
4 C.-H. Oh, Y.-K. Park, and C.-T. Lee, Preparation of feed glass materials for producing a foamed borosilicate glass body from waste LCD panel, Appl. Chem. Eng., 27(4), 371-379 (2016).   DOI
5 DiSeven, Inc., Sound absorbing coefficients of materials, http://www.diseven.co.kr/bbs/board.php?bo_table=nosound&wrid=13.
6 G. C. Stevens and M. Goosey, Materials used in manufacturing electrical and electronic products. In: R.E. Hester and R.M. Harrison,(des.). Elctronic Waste Management, 40-74, Royal Society of Chem., Cambridge, UK (2008).
7 B. Kopacek, ReLCD : Recycling and re-use of LCD panels, Proceedings of 19th Waste Management Conference of the IWMSA (Waste Con 2008), October 9-11, Durban, South Africa (2008).
8 S. Kiyoshi and N. Tadashi, Method for treating waste liquid crystal panel, JP Patent 3 589 936 (2004).
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 T. Honma, T. Ubusawa, T. Furuyama, A. Morikaku, and K. Tanaka, Process for recycling useful metal, JP Patent 2,241,381 (2008).
11 C.-T. Lee, The recycling of waste glass: Manufacture of foamglass and its prospect, Korean Ind. Chem. News, 3, 1-15 (2000).
12 C.-T. Lee, Production process of foamed glass by compressive shaping, Appl. Chem. Eng., 24(3), 239-246 (2012).
13 R. Martin, Use of liquid crystal displays and methods for their utilization, EU. Patent 2 082 817(2009).
14 K. Yamabuchi, T. Komoda, K. Kaida, A. Izumi, T. Horiuchi, S. Takabe, and T. Katayama, Method and device for parting glass substrate, liquid crystal panel, and liquid crystal manufacturing device, PCT/JP2002/011540 (2003).
15 H. Takatsu, Investigation activity and data on safety of liquid crystal materials, Mol. Cryst. Liq. Cryst., 364, 171-186 (2001).   DOI
16 J. M. Kim, C.-T. Preparation of foamed glass block from recycled soda-lime-silicate glasses by chemical composition contol, Appl. Chem. Eng., 24(4), 382-390 (2012).
17 R. Martin, B. Simon-Hettich, and W. Beckedr, Safe recovery of liquid crystal displays (LCDs) in compliance with WEEE, Electonics Goes Green 2004, 147-151 (2004).