Modified PP (polypropylene) regenerated material for automobiles and preparation method of modified PP regenerated material for automobiles

Abstract

The invention provides a modified PP (polypropylene) regenerated material for automobiles and a preparation method of the modified PP regenerated material for the automobiles. The modified PP regenerated material is prepared from a PP homopolymerized drawing-grade crushed material, a PP homopolymerized injection-molding-grade crushed material, a PP copolymerized washing machine drum crushed material, a PP copolymerized high-impact sheet-grade crushed material and color masterbatch. By adoption of the preparation method, the modified PP regenerated material for the automobiles is stable in performance and superior to other single PP materials in physical properties such as impact strength and melt index. The modified PP regenerated material not only can be used for manufacturing of moderate-impact-resistant parts such as automobile door panels but also can be used for manufacturing of high-impact-resistant parts such as bumpers through further modification. In adoption of the material and method for automobile modification, simplicity in operation and low cost are realized.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a modified PP recycled material for automobiles and a preparation method thereof. Background technique [0002] Polypropylene (PP) has become the third general-purpose material in the world after polyethylene and polyvinyl chloride due to its low density, good heat resistance, balanced mechanical properties, and low price. It is widely used in electronics, machinery, Daily necessities and other industries. Polypropylene is not only closely related to people's daily life, but also has become an indispensable important material in industrial and agricultural production. In 2011, the total global consumption of polypropylene was 42.3 million tons, with an average annual compound growth rate of 4.5%. By 2020, the total global consumption of polypropylene is predicted to reach 62.4 million tons. However, with the increasing production and consumption of polypropylene, more...

AI Technical Summary

Problems solved by technology

[0004] (1) Incineration or landfill method, because harmful gases such as sulfur dioxide are produced during the incineration process, it is easy to cause environmental pollution, and landfill method is a waste of land resources, and the refractory nature of materials will also cause great harm to the environment Harm, this method is being phased out:

[0005] (2) Carry out simple recycling and granulation of waste electrical shell materials, defective materials, defective products or recycled products without any scientific and technological modification. The array is used for ordinary plastics. Although the problem of environmental pollution has been solved, it has not Making full use of the economic value of these secondary materials, and the flow of inferior materials to the market will have serious consequences, resulting in the emergence of inferior products

However, the prior art rarely involves how to classify and select waste polypropylene raw materials, which is not conducive to the preparation and practical application of recycled polypropylene materials.