High-strength high-toughness polypropylene regenerated particles and preparation method thereof

Abstract

The invention provides high-strength high-toughness polypropylene regenerated particles, prepared from the following materials by weight percent: 40-60 percent of waste polypropylene, 5-15 percent ofpolyolefin resin, 5-10 percent of elastomer, 10-20 percent of inorganic rigid particle and coupling agent, 5-20 percent of enhancer, 1-10 percent of bulking agent, 0.1-1 percent of nucleating agent and 0.5-1 percent of other aids. The invention also provides specific production process parameters and a preparation method of the polypropylene regenerated particles; the preparation method comprisesthe steps of firstly adopting a high-speed mixer to evenly mix the proportioned materials, and then preparing the polypropylene regenerated particles by the shear plasticizing action of a twin-screw extruder. The waste polypropylene is taken as a main raw material to prepare high-performance recycled polypropylene, the technological content of the waste polypropylene is effectively improved, the waste polypropylene is recycled, both the resource shortage problem and the environment problem are solved, and certain guiding significance is achieved for the development of recycled plastics industry.

Description

technical field [0001] The invention belongs to the field of recycling and utilization of waste plastics in the renewable resources industry, and relates to regeneration and modification technology of waste polypropylene plastics, in particular to a preparation method of high-strength and high-toughness polypropylene regeneration particles. Background technique [0002] Polypropylene plastic products have quickly occupied the markets of daily chemicals, electronic appliances, automobiles, and construction due to their advantages such as light weight, high strength, and easy processing and molding. However, with the aging of plastics and the replacement of items, the waste of a large amount of polypropylene has put a lot of pressure on the environment, resulting in serious "white pollution". Due to the enhancement of environmental awareness, the recycling of waste polypropylene has gradually become a research hotspot. Recycled plastics have become an effective means to solve...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a method for preparing high-strength and high-toughness polypropylene recycled granules. The prepared polypropylene recycled granules have high strength and good toughness, which can match the quality of new polypropylene materials. The use performance saves one-third of the cost compared with new materials, and solves the problems of poor quality of existing polypropylene recycled materials and low added value of science and technology.

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