Fire door core vermiculite board is used as a fire door filling material. Compared with other fireproof materials, it is relatively late in China. The fire door core vermiculite board is made of 800-1000 ℃ high temperature expanded vermiculite, inorganic auxiliary materials and binders in a certain proportion and evenly mixed, put into an abrasive tool, pressed and shaped, cured at low temperature, and dried at high temperature. kinds of plates. It does not contain asbestos, and does not produce gas that is harmful to human health when heated to 1200 degrees Celsius, and its combustion performance reaches Class A. The inherent characteristics of vermiculite make the thermal conductivity of the board stable in high temperature environment, and it has also become a high-quality filling material for fireproof, heat preservation, heat insulation and soundproof fire doors.
Fire door core vermiculite board, as a high-quality filling material for fire doors, also has the following characteristics:
1. Low bulk density: The bulk density of fire door core vermiculite board is generally between 350~1000kg/m3, which can meet the requirements of various fire doors for filling materials.
2. Good fire resistance: the combustion performance reaches A1 level and is non-combustible.
3. Strong temperature resistance: 800~1200 ℃, can withstand 2-4 hours of burning and prevent the spread of fire.
4. High strength: the compressive strength of the fire door core is greater than or equal to 0.4mpa, and the flexural strength is greater than or equal to 0.25mpa, which meets the requirements of use;
5. Low moisture content: the moisture content of the fire door core vermiculite board is less than or equal to 13%, which meets the standard requirements;
6. The shape, thickness and size are generally customizable, easy to install and cost saving.
7. Energy saving and environmental protection: The fire door core vermiculite board smoke toxicity classification is AQ1 level, the production and use process is non-toxic and harmless, and does not endanger human health.
