The composition of lead glass is: RmOn-PbO-SiO2(B2O3). SiO2 (B2O3), that is, silicon oxide (boron oxide), said the network formation, is the basic unit of the structure of the glass network.RmOn, on behalf of alkali, alkaline earth, rare earth metals, metal oxides, is to make changes in the structure of the glass network to adjust the characteristics of the network modifiers.PbO, that is, lead oxide, for the characteristics of the components, giving the glass the basic characteristics. With the increase of PbO content, the glass density, refractive index, dispersion, dielectric constant, X-ray and γ-ray absorption coefficient and other performance indicators increase; its hardness, high temperature viscosity, softening temperature, chemical stability and other indicators of the value of the decrease; resulting in glass molding material long, coloring agent colorful, surface gloss increase, knocking sound crisp.
The use of lead glass
Lead glass in the medical field, also known as medical X-ray radiation shielding lead glass panels, used as diagnostic X-ray machine room, CT, ECT, PET, PET-CT and other machine rooms and X-ray photographic protection room, protective doors on the observation screen, as well as the operation of the protective screen of nuclear medicine and so on. The required thickness can be determined according to the calculation
To determine the quality standard of lead glass
1, appearance check, no bubbles, cohesion;
2, the color is basically transparent, no black impurities, color uniformity and uniformity;
3, the cutting surface is smooth, smooth, no residual edges, debris;
4, the performance of the test to see if it can achieve the labeled protection equivalence
4, check whether it can be The labeled protection equivalent
Source: Hunan Conningda official website