Halogen-free flame retardant polystyrene foam

Abstract

The invention relates to the field of foamed plastics, in particular to halogen-free flame retardant polystyrene foam, and solves the problem that the flame retardant function cannot be realized better due to poor high-low-temperature resistance of a foam material in the prior art. The halogen-free flame retardant polystyrene foam comprises components in parts by weight as follows: 100 parts of polystyrene masterbatch, 10-20 parts of organosilicone grafted polystyrene, 3-10 parts of silicone rubber micropowder, 20-30 parts of inorganic filler, 2-10 parts of n-pentane, 4-10 parts of halogen-free flame retardant, 0.15-1 part of a catalyst and 0.1-0.3 parts of dimethyl silicone oil. The halogen-free flame retardant polystyrene foam can be prepared in a conventional foaming mode. The halogen-free flame retardant polystyrene foam has the following advantages: (1), high-temperature resistance and flame-retardant performance are excellent; (2), the polystyrene foam is halogen-free and flame-retardant and cannot produce greasy dirt, harmful substances or substances polluting the environment in a burning process; (3), the mechanical property is excellent, and the impact resistance is strong.

Description

technical field [0001] The invention relates to the field of foamed plastics, in particular to a halogen-free flame-retardant polystyrene foam. Background technique [0002] Polystyrene foam is made of polystyrene resin as the main body, adding foaming agent and other additives. It is currently the most widely used cushioning material. It has a closed-cell structure, low water absorption and excellent water resistance; low density, generally 0.015-0.03; good mechanical strength, excellent cushioning performance; good processability, easy to mold; good colorability, strong temperature adaptability , Excellent anti-radiation and other advantages, and high dimensional accuracy, uniform structure. Therefore, its share in the external wall insulation is very high. [0003] However, ordinary polystyrene foam is extremely flammable and emits styrene gas that pollutes the environment when burned. The maximum working temperature is only 120°C, and it often cannot play its role in ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor high and low temperature resistance of foam materials in the prior art and the inability to better realize the flame retardant function, and to provide a foam material capable of preparing high and low temperature resistance, good weather resistance, and flame retardant function. A kind of halogen-free flame-retardant polystyrene foam

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