Environmental-friendly polypropylene foaming bead and preparation method thereof

Abstract

The invention relates to an environmental-friendly polypropylene foaming bead. Preparation of the foaming bead comprises steps of: a) subjecting a polypropylene resin and a porous material with an adsorption function to mixing, extrusion, wire drawing and granulation through an extruder to obtain polypropylene particles; and b) adding the polypropylene particles into a reactor, heating and pressuring, and releasing into the air in an instant to obtain a certain multiplying power of the environmental-friendly polypropylene foaming beads having adsorption, air purification and disinfection functions. The porous material with the adsorption function comprises active silicon, active carbon, active alumina, bamboo charcoal, graphitized carbon black, active carbon fiber, and the like. The porous material with the adsorption function accounts for 0.1%-20% by weight of the total adding amount of the polypropylene. The porous material with the adsorption function has a particle size of 700-1200 meshes, and a pore diameter of 2-500 nm. The polypropylene foaming bead has a great application potential in environment purification of automobile inner decoration, home decoration, and other industries.

Description

technical field [0001] The invention relates to a preparation method of environment-friendly polypropylene foam beads with the functions of adsorption, air purification and bacteria removal, and is applied to the fields of environmental purification and buffering such as automotive interior parts, packaging materials, and home decoration materials. Background technique [0002] Expanded polypropylene materials include various engineering plastics and are used in various fields due to their excellent mechanical strength, heat resistance, machinability, flame resistance, and recyclability. For example, automotive interior parts, packaging materials, building materials, heat insulation materials, etc. Especially in the field of transportation such as automobiles, expanded polypropylene materials have been used in various parts such as bumpers, sun visors, tool boxes, seats, etc. [0003] The smell of new cars, newly renovated houses, newly added furniture and electrical applia...

AI Technical Summary

Problems solved by technology

For the blending system of bamboo charcoal or activated carbon and polypropylene, there are related patents, but this is still blank in the foaming industry

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