Multi-component rare earth modification technical method applied to polypropylene-based material

Abstract

The invention belongs to the technical field of polypropylene modification, and particularly relates to a multi-component rare earth modification technical method applied to a polypropylene-based material. The method comprises the following steps: S1, pouring lanthanum oxide powder into an intelligent temperature control magnetic stirrer, fully stirring, in the stirring process, sequentially adding a diethylhydroxylamine stabilizer, a silane coupling agent and an N-phenylmaleimide heat-resistant agent, after stirring is completed, taking out a mixed solution, standing for 15 min, and then performing sufficient drying to finally obtain a multi-component rare earth modifier; and S2, carrying out polymerization reaction on a polypropylene-based material to obtain a polypropylene polymer, then filling calcium carbonate and silicon dioxide into the polypropylene polymer, then adding the multi-component rare earth modifier obtained in the S1 into the polypropylene polymer, and extruding by using a twin-screw extruder to prepare primarily modified polypropylene particles. The oxidation resistance and the ultraviolet resistance of the polypropylene-based material modified by the technical method are greatly improved.

Description

technical field [0001] The invention relates to the technical field of polypropylene modification, in particular to a multi-component rare earth modification technology method applied in polypropylene-based materials. Background technique [0002] Polypropylene is a polymer formed by addition polymerization of propylene. It is a white waxy material with a transparent and light appearance. Polypropylene is widely used in the production of clothing, blankets and other fiber products, medical equipment, automobiles, bicycles, parts, pipelines, chemical containers, etc., and is also used in food and drug packaging. With the development of society and scientific progress, polypropylene Poor impact resistance at low temperature, poor weather resistance, poor surface decoration, and the gap between functionality and actual needs in terms of electricity, magnetism, light, heat, and combustion. Modification of polypropylene has become the current plastic processing technology. The f...

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Problems solved by technology

[0003] At present, the technical method of rare earth modifier is used to modify polypropylene-based materials, but the existing technical method is due to the heat resistance and stability of the rare earth modifier during the modification process, which leads to rare earth modification. Part of the agent is easily volatilized during use to reduce its activity, which makes the modified polypropylene-based material poor in performance, and the existing technical methods cannot solve the oxidation resistance of the polypropylene-based material itself no matter how it is modified. And the disadvantages of poor UV resistance

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