Flame-retardant master batch applied to PS foamed plastic and preparation method thereof

Abstract

The invention discloses a flame-retardant master batch applied to PS foamed plastic and a preparation method thereof, which belong to the technical field of flame-retardant master batch production, and the flame-retardant master batch is prepared from the following raw materials in parts by weight: 25-55 parts of brominated SBS, 30-55 parts of PS, 2-5 parts of a synergistic flame retardant, 3-5 parts of polyethylene wax, 3-5 parts of a heat stabilizer and 5-10 parts of nano calcium carbonate. The flame-retardant master batch disclosed by the invention can completely replace hexabromocyclododecane; a high molecular weight polymerization type structure of the material is not prone to biological accumulation, pressure faced by a product in environmental protection is avoided, molten drops arenot generated during combustion, a compact carbon residue protection layer is formed after combustion to prevent combustion, bromine compounds are not contained after decomposition, and the materialis easy to prepare, convenient to operate and small in use amount. The synergistic flame retardant and the brominated SBS are combined to jointly improve the flame retardant property of the flame retardant master batch, and the flame retardant efficiency of the flame retardant in the PS foamed plastic can be greatly improved, so that the PS foamed plastic can reach a high flame retardant grade under the condition that the addition amount of the flame retardant is relatively small.

Description

technical field [0001] The invention relates to the technical field of flame-retardant masterbatch production, in particular to a flame-retardant masterbatch applied to PS foam plastics and a preparation method thereof. Background technique [0002] With the increasing pressure on the environment and resources, energy conservation and environmental protection in the field of building materials has become an inevitable choice. PS foam is the main insulation material for building exterior walls in my country, accounting for more than 80% of the insulation market. However, because it is flammable and burns fast, the flame retardant problem has always been a factor that limits the application of PS foam to other fields. However, hexabromocyclododecane and its flame retardant masterbatch used in flame retardant PS foam plastics have become the leader of many flame retardant products, accounting for more than 80% of PS foam plastic flame retardants, although hexabromocyclododecane...

AI Technical Summary

Problems solved by technology

Our country's building exterior wall insulation materials are dominated by PS foam plastics, accounting for more than 80% of the insulation market. However, because it is flammable and burns fast, the flame retardant problem has always been a factor that limits the application of PS foam plastics to other fields.

However, hexabromocyclododecane and its flame retardant masterbatch used in flame retardant PS foam plastics have become the leader of many flame retardant products, accounting for more than 80% of PS foam plastic flame retardants, although hexabromocyclododecane It has excellent flame retardant effect, but it will pose potential long-term harm to humans and the environment. Hexabromocyclododecane is used in PS foam plastics in the construction market. Due to poor environmental protection, it will affect the safety and normal use of people's lives