High-strength and high-toughness environmental-protection recycled PP composite material, as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of environmental protection materials, and in particular relates to a high-strength and high-toughness environmental-protection recycled PP composite material. The high-strength and high-toughness environmental-protection recycled PP composite material comprises the following components in parts by weight: 80 to 95 parts of recycled PP, 5 to 20 parts of waste PCB nonmetallic epoxy resin powder, and a beta-nucleating agent of which the usage amount accounts for 0.01 to 0.1% of recycled PP; the beta-nucleating agent is calcium pimelate. According to the invention, the waste PCB nonmetallic epoxy resin powder is taken as a filling reinforcer, and the calcium pimelate is prepared to be the beta-nucleating agent and added into the recycled PP, so that the high-strength and high-toughness recycled PP composite material is prepared, the cost can be saved, and the white pollution can be reduced; the wastes are turned into useful resources, and the high-strength and high-toughness environmental-protection recycled PP composite material is convenient to process (feeding at a side material opening is not required), and environment-friendly; furthermore, the beta-nucleating agent provided by the invention is used with PCB, thereby being capable of promoting the dispersion of the beta-nucleating agent, increasing the crystal transformation efficiency, further reducing the usage amount and lowering the cost.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmentally friendly recycled materials, and more specifically relates to a high-strength, high-toughness environmentally friendly recycled polypropylene composite material and its preparation method and application. Background technique [0002] With the increasing maturity of the research on polymer materials, the society has been flooded with polymers, and when such items lose their use value, they will bring about a serious environmental pollution problem - white pollution. As one of the general-purpose plastics, polypropylene (PP) is used globally every year due to its excellent mechanical properties and physical and chemical properties. One of its typical uses is as a packaging material. However, as a thermoplastic material, polypropylene has good prospects for recycling. However, the used polypropylene often has problems such as oxidation and aging, which leads to a certain degr...

AI Technical Summary

Problems solved by technology

A typical and convenient way to change the crystal form is to add a β-nucleating agent, such as: organic carboxylic acids and their salts, aromatic amides, inorganics, etc., and organic carboxylic acids and their salts have high melting points and heat resistance. It has good performance and good conversion effect and becomes a highly efficient β-nucleating agent with extraordinary potential, but it also has problems such as poor dispersion and high price, which affect its wide application in the manufacturing industry