Halogen-free Grade B1 high flame retardant spraying polyurethane foam plastic

Abstract

The invention relates to a halogen-free Grade B1 high flame retardant spray-applied polyurethane foam plastic which is characterized by being prepared by mixing and foaming of halogen-free Grade B1 high flame retardant spraying polyurethane foam plastic combined polyether and isocyanate. By using the halogen-free polyether glycol and adding a halogen-free flame retardant, the flame retardant property of the prepared polyurethane foam plastic can reach national Grade B1 standard; the gas released in the burning process of the foam is low in toxicity and concentration, thereby effectively protecting safety of life and properties of people; because of the lower grade of the used isocyanate, the cost is obviously reduced; and the foam has better heat conductivity coefficient and cohesive property.

Description

technical field [0001] The invention relates to a halogen-free B1 grade highly flame-retardant sprayed polyurethane foam, which belongs to the field of flame-retardant polyurethane foam. Background technique [0002] Rigid polyurethane foam is the best thermal insulation material, but it contains combustible hydrocarbon segments, low density, and large specific surface area. Polyurethane without flame-retardant treatment is combustible and will burn and decompose in case of fire. A large amount of toxic fumes are produced, making it difficult to extinguish the fire. At present, polyurethane foam mainly adopts the method of adding halogen-containing and phosphorus-containing flame retardants or polyols to achieve the purpose of flame retardancy. The halogen-containing substances in the foam are easy to decompose and release corrosive and toxic gases such as hydrogen halide, which will damage the attachments of the foam such as building walls, affect the function and life of ...

AI Technical Summary

Problems solved by technology

The halogen-containing substances in the foam are easy to decompose and release corrosive and toxic gases such as hydrogen halide, which will damage the attachments of the foam such as building walls, affect the function and life of the attachments, and also cause damage to the surrounding environment; Foam also emits corrosive and toxic gases such as hydrogen halide when it encounters fire, and the density of combustion smoke is high, which not only causes damage to attachments and the environment, but is also not conducive to escape and rescue work before the fire