The structure, thermal stability and dielectric properties of aluminoborosilicate glasses with different contents of Pr₂O₃ were researched by XRD, FT-IR, DSC and electronic impedance analyzer. FT-IR results showed that the addition of Pr₂O₃ enhanced the degree of polymerization of glass network. The molar volume decreased at first and then increased, which reached the minimum value with the content of Pr₂O₃ up to 1.5 mol%. With the addition of Pr₂O₃ the glass transition temperature (T_g) showed an upward trend, while Dietzel's thermal stability (ΔT) and the Saad parameter (S) both increased initially to be followed by a decrease, which indicated that the thermal stability of glass can be improved by doping proper content of Pr₂O₃. The dielectric constant (ε_r) and dielectric loss (tanα) both decreased at first then started to go up as the content of Pr₂O₃ increased. When Pr₂O₃ content moved up to 0.5 mol% and 1.5 mol%, the ε_r and tanα reached the minimum values 4.68 and 3.13 × 10^–4, respectively.

采用XRD、FT-IR、DSC和电子阻抗分析仪研究了不同Pr ₂ O ₃含量的铝硼硅酸盐玻璃的结构、热稳定性和介电性能。FT-IR结果表明Pr ₂ O _{3 的加入}提高了玻璃网络的聚合度。摩尔体积先减小后增大，当Pr ₂ O ₃含量达到1.5 mol%时达到最小值。随着Pr ₂ O ₃的加入，玻璃化转变温度（T _g）呈上升趋势，而Dietzel 的热稳定性（Δ T)和Saad参数( S )均先增大后减小，表明适当掺杂Pr ₂ O ₃可以提高玻璃的热稳定性。随着Pr ₂ O ₃含量的增加，介电常数（ε _r）和介电损耗（tanα）均先降低后开始升高。当Pr ₂ O ₃含量上升到0.5 mol% 和1.5 mol% 时，ε _r和tanα 分别达到最小值4.68 和3.13 × 10 ^–4。