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Time: 2017-02-17

phosphorus-containing

Flame retardant

Flame retardant effect is good, but the environmental performance is poor, halogen free flame retardant due to the added amount is too large to wear the "inefficient" hat. From the state

Fireproof building material

Quality building inspection center learned that China's halogen-free flame retardant research and development has made a major breakthrough, by a liaoning

Composite materials

The lock fire retardant manufactured by the company not only achieves high efficiency, but also reaches the leading level of environmental protection in China.

It is understood that most of the polymer materials flammable, must add flame retardant. Flame retardants are mainly divided into two categories: halogen and halogen free. Halogen flame retardant has the advantages of low dosage, high flame retardant efficiency and wide adaptability, the disadvantage is that a lot of smoke and toxic and corrosive gases are generated during combustion. In a fire, people are most likely to die from inhaling harmful substances. Therefore, the market for smoke suppression effect of good halogen-free flame retardant products is increasingly urgent demand. However, halogen-free flame retardants need to be added in a high amount to obtain moderate flame retardancy, and too much will affect the processing properties and mechanical properties of the material, flame retardant properties and maintain or improve other properties of the material has a certain contradiction.

Zhao chenggang, director of the national fire building materials quality inspection center, believes that smoke suppression is the main requirement for flame retardants. The lock fire retardant has been treated

wood

, fabric,

Polyurethane (pu)

The oxygen index of soft foam and polystyrene foam board is much higher than that of similar products. The smoke density of flame-retardant fabric treated with this product is 4.02, which has not been reported at home and abroad.

Professional introduction, a small amount of the application of this kind of flame retardant in the outer layer of combustible materials, can form a protective layer of fire prevention, fire process in the formation of a dense solid fire isolation layer, so as to achieve the purpose of flame retardant. Therefore, while ensuring excellent smoke suppression performance, 0.5wt% of the fire retardant can achieve the amount of some commercially available products 30wt% of the flame retardant effect, will not affect the other properties of the matrix material.