The fire door core board is the main filling material that plays a decisive role in the quality of the fire door, and its fire rating directly determines the fire rating of the fire door. Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and heat insulation within a certain period of time. Fire doors are divided into three categories: A, B, and C. The state stipulates that the core board of fire doors should be non-toxic and harmless to the human body. It has been tested by a nationally recognized and authorized testing agency to meet the A1 level requirements for combustion performance specified in GB8624-2006 and the ZA2 level requirements for smoke-producing toxicity hazard classification specified in GB/T20285-2006.
At present, the main fire door core board materials on the market are vermiculite, aluminum silicate wool, mineral wool, rock wool, inorganic foam and perlite fireproof board. Among them, rock wool and aluminum silicate wool are harmful to people due to dust pollution. good health without being applied. In the production of fire door core panels, not only the main materials must meet the requirements, but also the additives and binders must be non-toxic and harmless products to the human body, and should be inspected by a nationally recognized authorized testing agency to meet the smoke-producing toxicity specified in GB/T20285-2006 Hazard classification ZA2 level requirements. The vermiculite fire door core board produced by Jishang is made of high-quality vermiculite, which is non-toxic, smoke-free, green and environmentally friendly. It is an inorganic material without carbon and sulfur elements. In the process of production and use, CO2 and SO2, which affect the atmosphere, will not be produced, and even in the event of fire or high temperature, it will not produce toxic gases that are harmful to the human body. Jishang vermiculite fireproof door core board has the advantages of low bulk density, good fire resistance, high strength, low moisture content, energy saving and environmental protection and low cost, and is widely used in high-rise residential buildings, hotels, office buildings, commercial shopping centers, laboratories, factories. and other construction fields.
