Materialization Study on Glass-Ceramic from TFT-LCD Wasted Glass Mixing with Basic Oxygen Furnace Slag by TwoStage Heat Treatment
Date Issued
2011
Date
2011
Author(s)
Lee, Hsin
Abstract
Abstract
The influence of two-stage heat treatment and additives like MgO、Al2O3 on the dielectric properties and mechanical properties of glass-ceramics made from a combination of TFT-LCD(Thin Film Transistor Liquid Crystal Display) waste glass and Basic Oxygen Furnace Slag(BOF) is investigated.
The system of glass-ceramic shifted from CAS to MAS system was through 20%(w/w) MgO and 20%(w/w) Al2O3 added into the martrix(TFT-LCD waste glass: BOF=7:3). The experiment demonstrated that the density increased with temperature increase. Moreover, both adding additives and two-stage heat treatment improved mechanical properties due to production of forsterite crystal. Under two-stage heat treatment process with 640℃ for 2 hours followed by 980℃ for 30minutes, a material with high density (2.91 g/cm3),high bending strength (256MPa), high compressive strength(717MPa) ,low dielectric dielectric constant(7.59) and low dielectric loss factor(0.097) were resulted, which met the required standard of insulated glass-ceramic.
Subjects
TFT-LCD Waste Glass
Basic Oxygen Furnace Slag
BOF
Glass-Ceramic
Two-stage Heat Treatment
MAS System
CAS System
Mechanical Properties
Dielectric Properties
Type
thesis
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