Flame-retardant and environment-friendly polystyrene foam material and preparation method thereof

Abstract

The invention discloses a flame-retardant and environment-friendly polystyrene foam material and a preparation method thereof and belongs to the field of polystyrene foam materials. The polystyrene foam material is prepared from raw materials in parts by weight as follows: 90-100 parts of polystyrene/SiO2 core-shell composite particles, 80-90 parts of phenolic resin, 15-20 parts of a curing agent,4-5 parts of a nitrogen-phosphorus intumescent flame retardant and 1-2 parts of sodium dodecyl benzene sulfonate. Expandable core-shell composite bead particles are prepared through suspension polymerization with SiO2 aerogel as a core and polystyrene as a shell, the defects that polystyrene has high heat conductivity coefficient and poor corrosion resistance and is inflammable are overcome, SiO2aerogel and polystyrene are compounded, advantages are enhanced while disadvantages are avoided, advantages of SiO2 aerogel and polystyrene are played simultaneously, a SiO2 aerogel composite board has heat insulation property higher than that of common foam polystyrene boards and has substantially improved flame retardance. The nitrogen-phosphorus intumescent flame retardant has the advantages of smoke inhibition, low toxicity and no corrosive gas, the flame retardance of the material is improved with non-halogenation, no-toxic and flame-retardant technologies and environmental pollution iseffectively reduced.

Description

technical field [0001] The invention belongs to the field of polystyrene foam materials, and in particular relates to a polystyrene flame-retardant and environment-friendly foam material and a preparation method thereof. Background technique [0002] Polystyrene foam (EPS) insulation, as an organic insulation material, is a potential fire hazard. Therefore, it is extremely important to study the flame retardant modification of EPS. In the prior art, the flame retardant modification of EPS is mainly realized by adding a flame retardant. Additive flame retardants can be divided into two categories: organic flame retardants and inorganic flame retardants according to their chemical composition. Inorganic flame retardants such as magnesium hydroxide, aluminum hydroxide, antimony trioxide, etc. have the advantages of low smoke, low toxicity, halogen-free, good stability and low price, but there are large amounts of addition and poor compatibility with materials , Reduce materi...

AI Technical Summary

Problems solved by technology

Inorganic flame retardants such as magnesium hydroxide, aluminum hydroxide, antimony trioxide, etc. have the advantages of low smoke, low toxicity, halogen-free, good stability and low price, but there are large amounts of addition and poor compatibility with materials , Reduce material properties and other shortcomings, subject to certain restrictions

Organic flame retardants are mainly halogenated flame retardants, such as decabromodiphenylene, decabromodiphenyl ether, etc. Although this series of flame retardants have good compatibility with materials, small addition amount, high cost performance, and The performance of the material has the advantages of small impact, but when it is flame retardant, it will produce a large amount of toxic gases such as hydrogen halide, which is harmful to humans and the environment.