Fabrication and characterization of glass with E-glass fiber composition by using silica-alumina refused coal ore

The glass of E-glass fiber composition was fabricated by using refused coal ore which is obtained as by-product from Dogye coal mine in Samcheok. We used silica-alumina refused coal ore which has low carbon content relatively, and the amount of refused coal ore has been changed from 0 to 35 % in batch composition. E-glass was fabricated by the melting of mixed batch materials at 1550oC for 2 hrs with different refused coal ore composition of 0~35 %. We obtained a transparent and clear glass with high visible light transmittance value of 81~84%, thermal expansion coefficient of 5.39~5.61 × 10?6/oC and softening point of 851~860oC. The glass fiber samples were also obtained through fiberizing equipment at 1150oC, and tested chemical resistance and tensile strength to evaluate the mechanical property as a reinforced glass fiber of composite material. As the result, we identified the properties of E-glass fiber by using refused coal ore are plenty good enough compare to that of normal Eglass without refused coal ore, and confirmed the possibility of refused coal ore as for the raw material of E-glass fiber.