Flame-retardant continuous long glass fiber reinforced pp material for wall switch and preparation method thereof

Abstract

The invention provides a flame-retardant continuous long glass fiber reinforced PP material used for wall switches, and a preparation method thereof. The flame-retardant continuous long glass fiber reinforced PP material used for wall switches comprises, by weight, 100 parts of PP, 5 to 20 parts of a fire retardant, 1 to 5 parts of a glass fiber reinforcing agent, 10 to 30 parts of continuous longglass fiber, 10 to 20 parts of a flame resistance synergistic agent, 2 to 10 parts of a compatilizer, 0.1 to 1 part of an anti-oxidant, and 0.1 to 1 part of a metal deactivator. The preparation method thereof comprises following steps: S1, a part of PP, the anti-oxidant, a metal deactivator, and the glass fiber reinforcing agent are introduced into a double screw extruder A for mixing, and are introduced into an infiltrating die; the rest PP, the fire retardant, and the flame resistance synergistic agent are introduced into a double screw extruder B for mixing, and are introduced into the infiltrating die; and S3, the continuous long glass fiber is designed to pass through the infiltrating die, and is infiltrated and coated by a molten mixture in the infiltrating die so as to obtain a mixed material, and the mixed material is subjected to cooling, drying, and granulation. The flame-retardant continuous long glass fiber reinforced PP material possesses higher impact strength, and excellent high thermal resistance, flame resistance, and electricity insulating properties.

Description

technical field [0001] The invention relates to flame-retardant reinforced PP and a preparation method thereof, in particular to a flame-retardant continuous long glass fiber reinforced PP material for a wall switch and a preparation method thereof. Background technique [0002] The quality of the wall switch determines its safety, and also directly affects the safety of household electricity. Poor quality wall switches often have sparks and short circuits during use, which may cause electric shock and fire. Therefore, quality is very important. Regarding quality, the first thing to look at is its material, like some well-known brands of wall switch socket shells, which are safe and reliable, and have good leakage resistance, voltage resistance, flame retardancy, high temperature resistance, impact resistance, etc. performance material. [0003] The requirements for the material of the wall switch are: high strength, high heat resistance, high flame retardancy, high toughn...

AI Technical Summary

Problems solved by technology

[0004] However, the existing continuous long glass fiber flame retardant reinforced polypropylene material cannot achieve flame retardancy and reinforcement at the same time because it is difficult to add flame retardants in the process of producing reinforced long fiber reinforced PP.

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