SnO-P₂O₅계 유리에서 P₂O₅를 B₂O₃로 치환시 구조와 물성에 미치는 영향

The investigation is directed to lead free (Pb-free) frits that can be used for organic light emitting diode, plasma display screen devices and other sealing materials. P₂O?-SnO system glasses have been prepared for Pb-free low temperature glass frit. Structure and properties of the glasses with the composition SnO -x B₂O₃-(60 -x )P₂O? (x=0, 5, 10, 15, 20, 25, 30, 35, 40 ㏖%) were characterized by infrared spectra (IR), X-ray diffraction(XRD), Density, Molar volume, Thermo mechanical analysis(TMA) and weight loss after immersion test. Glass transition temperature(T g ), dilatometric softening temperature(Td) and chemical durability increased, and coefficient of thermal expansion(α) decrease with the substitution of B₂O₃ for P₂O? in the range of 0~25 ㏖%.