1. The fire resistance grade of the polyurethane rock wool sandwich panel.
Black and white materials are the key to rock wool sandwich panels, with strong stability and high quality. The raw materials used can ensure good stability and fire resistance of the core material.
2. Polyurethane rock wool sandwich panel has good fire performance.
Only by dividing the fire performance, can we provide the rock wool sandwich panel that meets the customer's requirements according to the customer's fire performance.
1.B1 fireproof rock wool sandwich panel is B1. According to the national standard, B1 fire protection refers to an oxygen index of 30. The way to check the fire performance is to ask the manufacturer for a monitoring report, and then directly ignite it with a lighter. The incombustibility is obviously B1 fireproof.
2. The oxygen index of B2 fireproof rock wool sandwich panel is 28, indicating that the B2 fireproof sandwich panel is flame retardant.
3.B3 fire rock wool sandwich panel refers to the oxygen index of 26. The B3 fire hazard level is relatively difficult to burn, and the flammability index is higher than B1 and B2.
