China's national standard GB8624-97 divides the combustion performance of building materials into the following grades: 1. Class A: Non-combustible building materials: Materials that hardly burn. 2, B1 level: flame retardant building materials: flame retardant materials have a good flame retardant effect. It is difficult to catch fire when exposed to fire in the air or under high temperature, and it is not easy to spread quickly, and the combustion stops immediately after the fire source is removed. 3, B2 level: flammable building materials: flammable materials have a certain flame retardant effect. In the air, when exposed to fire or under high temperature, it will immediately ignite and burn, which may lead to the spread of fire, such as wooden columns, wooden trusses, wooden beams, wooden stairs, etc. 4, B3 level: flammable building materials: no flame retardant effect, very easy to burn, the fire risk is great. Materials for external wall insulation according to fire rating: 1. Insulation materials with combustion performance of Class A: rock wool, glass wool, foam glass, foam ceramics, foamed cement, closed-cell perlite, etc. 2. Insulation material with B1 grade combustion performance: extruded polystyrene board (XPS) after special treatment/polyurethane (PU), phenolic, rubber powder, polyphenylene, etc. 3. Insulation materials with B2 grade combustion properties: molded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.
ICESUN tempered vacuum glass once won the second-glass certification of integration and innovation of science and technology competition. The impact and bending strength of vacuum glass is much higher than that of ordinary glass. When the glass is damaged by external force, the fragments will form small obtuse angle particles similar to honeycomb, which is not easy to cause serious harm to human body. Tempered vacuum glass has good thermal insulation performance, with a minimum heat transfer coefficient of 0.19w (m2 * k). For vacuum glass with palm thickness, its thermal insulation performance has exceeded that of brick wall with 1m thickness. High-tech Vacuum Glass can be safely used in different harsh environments all over the world, and has become a real super environmental vacuum glass. In virtue of the super performance on thermal insulation, resistance to grade 9 wind pressure and sound insulation, our Safety Vacuum Glass products have won many praises at home and abroad.
Vacuum Glass For Ship,Low-E Vacuum Glass For Ship,Insulated Vacuum Glass For Ship,Tempered Vacuum Glass For Ship ICESUN VACUUM GLASS LTD. , https://www.icesunvacuumglass.com