Cheng Jinshu

The antibacterial effect of silver-carrying B2O3−SiO2−Na2O glass material

The antibacterial effect of carrying silver B2O3−SiO2−Na2O glass material was studied by means of antibacterial ring, nephelometery, MIC value, thin film attachment and microcalorimetry, respectively. The experimental results of five kinds of antibacterial test methods are almost identical and can verify that carrying silver B2O3−SiO2−Na2O glass material exerts an excellent antibacterial performance. Antibacterial ring and nephelometery are simple, quick, but the precision is restrictive. MIC value, thin film attachment method and microcalorimetry can quantitatively compare the antibacterial effects of the antibacterial glass material. Compared with the traditional microbe test methods, the microcalorimetry can analyze the inhibiting effect of the cell’s growth and metabolism on the antibacterial glass material by monitoring the thermal effect continuously and automatically.

Stress analysis of CaO−Al2O3−SiO2 system glass-ceramic with different thickness

In order to study the relationship between thickness and residual stress in CaO−Al2O3−SiO2 glass-ceramics. The residual stress was measured in CaO−Al2O3−SiO2 system glass-ceramic with different thickness, and the formation mechanism and characterization of residual stress in CAS system Glass-ceramic were analyzed by the X-ray diffraction analysis. The experimental results show the compressive residual stress increases with thickness of glass-ceramic increasing.