Glasses in the P2O5-V2O5-ZnO/B2O3 (PVZ/B) system, were investigated on the thermal properties such as glass transition temperature, dilatometer softening point and coefficient of thermal expansion, and chemical properties (aqueous durability) in order to determine their applicability as barrier-ribs in plasma display panels that can be fired at low temperatures (500C). The glass transition temperature, dilatometer softening point and coefficient of thermal expansion of the PVZ/B glasses ranged from 340375C, 380410C and 12013210-7/K, respectively. The aqueous durability was improved through the addition of some additives such as Al2O3 and TiO2. The FT-IR spectra revealed that the length of the phosphate chains was changed by changing the glass composition.