Influence of phosphorus pentoxide on structural, dielectric, and mechanical properties of borosilicate glasses for sealant applications

Herein, a glassy system 40SiO(2)-35H(3)BO(3)-(25-x)PbO-xP(2)O(5) was fabricated with increasing concentration of P2O5 (x = 0, 0.5, 1, 1.5 and 2) via a melt-quenching method. Structural and morphological analyses confirmed the non-crystalline nature of the synthesized glassy system. Spectroscopic studies revealed that the doping of P2O5 within the glass compositions highly affected the peak positions of the recorded spectra. The dielectric constant and dielectric loss values for undoped glass was found to be 64.37 and 0.0626. Also, the highest compressive mechanical strength is that of undoped glass is 355 MPa. Increase in doping concentration of P2O5 within the glasses showed a negative effect on their dielectric and mechanical properties. Further, synthesized P2O5-doped lead borosilicate glasses revealed significant dielectric and mechanical properties which makes them a potential contender for engineering materials, energy storage devices and insulating materials. Glass sample, SHPbP2 (2% P2O5) was further tested for sealant applications which successfully demonstrated a sealing between two borosilicate glass plates at 770 degrees C.

Automated summary

A glassy system (40SiO(2)-35H(3)BO(3)-(25-x)PbO-xP(2)O(5)) was fabricated with increasing concentration of P2O5, and spectroscopic studies showed that the doping of P2O5 highly affected the peak positions of the recorded spectra. The P2O5-doped lead borosilicate glasses demonstrated excellent dielectric and mechanical properties, making them potential candidates for engineering materials, energy storage devices, and insulating materials.