Polypropylene color master batch suitable for high-magnification foaming process and preparation method of polypropylene color master batch

Abstract

The invention relates to the field of foamed plastic, and aims to solve the problems that the foaming performance of the polypropylene material is poor due to the fact that the existing polypropylene material is too narrow in foaming temperature interval and poor in thermal performance, and polypropylene material foam is difficult to obtain by performing conventional foaming treatment on the polypropylene material. In particular to a polypropylene color master batch suitable for a high-magnification foaming process and a preparation method of the polypropylene color master batch, modified glass fibers in the polypropylene color master batch are obtained by modifying glass fibers, the glass fibers have the advantages of high heat resistance and high mechanical strength, and by adding the modified glass fibers, the heat stability of foamed polypropylene can be improved; meanwhile, the mechanical property of the foamed polypropylene can be improved, so that the application range of the foamed polypropylene is widened, the thermal stability and flame retardance of the foamed polypropylene can be greatly improved by adding the reinforcing agent, the foaming temperature interval of the foamed polypropylene is expanded, and the foaming property of the foamed polypropylene is further improved.

Description

technical field [0001] The invention relates to the field of foam plastics, in particular to a polypropylene color masterbatch suitable for a high-magnification foaming process and a preparation method thereof. Background technique [0002] Foam plastic has the advantages of light weight, heat insulation, cushioning, insulation, anti-corrosion and low price. The main varieties of foam plastic include polystyrene, polyurethane and polyolefin, which are widely used in all aspects of production and life. In recent years, with the enhancement of people's awareness of environmental protection, the polyurethane foam will produce toxic isocyanate residues during the foaming process, the product waste is difficult to dispose of, and the disadvantages of burning and releasing harmful gases have gradually attracted people's attention. As one of the polyolefin foam plastics Compared with polyvinyl chloride and polystyrene, the expanded polypropylene material has better tensile properti...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a polypropylene color masterbatch suitable for high-magnification foaming process and its preparation method: by combining polypropylene, polyethylene, dispersant, modified glass fiber and The reinforcing agent is added to the mixer and mixed evenly to obtain a compound, which is added to a twin-screw extruder to fully melt and mix the compound, and then add a foaming agent to continue melting and mixing to obtain a foam. It is granulated at the template of the underwater granulator, and the cut granules are dried, and then classified and packaged according to the particle size to obtain the polypropylene color masterbatch suitable for the high-magnification foaming process, which solves the problem of the existing polypropylene material The foaming temperature range is too narrow and the thermal properties are not good, resulting in poor foaming performance of polypropylene materials. It is difficult to obtain polypropylene material foam through conventional foaming treatment of polypropylene materials

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