Phosphorus-containing flame retardant flame retardant effect is good, but poor environmental performance, large amount of halogen free flame retardants for adding with "inefficient" hat. Editor from national fireproof construction material quality inspection center, research and development of halogen-free flame retardants in China has been a major breakthrough, made by liaoning some composite materials co., LTD. Lock the fire flame retardants in efficient at the same time, environmental performance has reached the leading domestic level.
Learned, macromolecule material most flammable, must add flame retardant. Flame retardants mainly divided into two categories: with and without halogen halide. Has the advantage of halogen flame retardants is less dosage, flame retardant, high efficiency and wide adaptability, the disadvantage is that combustion generated when a lot of smoke and toxic and corrosive gases. Fire, the staff is likely to be killed by inhaling harmful substances. As a result, the market for smoke suppression effect good halogen-free flame retardant product demand is becoming more and more urgent. However, halogen-free flame retardants are high in added quantity hard to moderate flame retardancy, and the amount of joining will influence the processing performance and mechanical properties of material, flame retardant performance and there is contradiction to keep or improve other properties.
Cheng-gang zhao, director of the national fire protection building materials quality inspection center that smoke suppression is the main requirement of flame retardants. The lock fire retardant treated wood, fabric, soft polyurethane foam, polystyrene foam board, etc., the oxygen index of the evaluation of smoke suppression performance of the key indicators are much higher than similar products. By the product of flame retardant fabric smoke density is 4.02, below the data has not been reported at home and abroad.
Professionals, a small amount of use of this kind of flame retardant in the outer layer of combustible material that can form fire protection, fire to form a dense solid fire in the process of isolation layer, so as to achieve the purpose of the flame retardant. Therefore, in the guarantee excellent smoke suppression performance at the same time, the dosage of 0.5 wt % of fire retardant lock can achieve some commercially available product dosage 30 wt % of the flame retardant effect, will not affect the other performance of substrate material.
