tempered glass

Tempered glass/Reinforced glass is safety glass. Tempered glass is actually a kind of prestressed glass. In order to improve the strength of the glass, chemical or physical methods are usually used to form compressive stress on the surface of the glass. When the glass is subjected to external force, it first offsets the surface stress, thereby improving the bearing capacity and enhancing the resistance of the glass itself. Wind pressure, cold and heat, impact, etc. Pay attention to distinguish it from glass fiber reinforced plastic.
grass
Glass is an amorphous inorganic non-metallic material, generally made of a variety of inorganic minerals (such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, etc.) of. Its main components are silica and other oxides. The chemical composition of ordinary glass is Na2SiO3, CaSiO3, SiO2 or Na2O·CaO·6SiO2, etc. The main component is silicate double salt, which is an amorphous solid with random structure. It is widely used in buildings to block wind and light, and belongs to a mixture. There are also colored glass mixed with oxides or salts of certain metals to show color, and tempered glass obtained by physical or chemical methods. Transparent plastics such as polymethyl methacrylate are sometimes referred to as glass for agricultural production systems.
prestress
Prestressing force is the compressive stress pre-applied to the structure during construction in order to improve the service performance of the structure. During the service period of the structure, the prestressing stress can fully or partially offset the tensile stress caused by the load and avoid structural damage. Commonly used in concrete structures, it is to apply pressure to the concrete structure in advance before it bears the load, so that the internal force of the concrete in the tensile area when the external load acts to generate compressive stress, to offset or reduce the tensile stress generated by the external load, so that the structure It does not crack or cracks relatively late under normal use.