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

폐 LCD 유리를 이용한 흡음특성을 갖는 붕규산유리발포체 제조

  • Lee, Chul-Tae (Department of Chemical Engineering, Dankook University)
  • 이철태 (단국대학교 공학대학 화학공학과)
  • Received : 2016.10.10
  • Accepted : 2016.11.15
  • Published : 2016.12.10

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

Acknowledgement

Supported by : 단국대학교

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