PE (polyethylene) modified material and preparation method thereof as well as PE pipe

Abstract

The invention discloses a PE (polyethylene) modified material. The PE modified material comprises PE recycled materials as well as a compatilizer and a compatilizer aid which are dispersed in the PE recycled materials, wherein the compatilizer aid is formed by compounding pentaerythrite tetra[beta-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] and tris-(2,4-di-tert-butyl-pheny)-phosphite. The compatilizer and the compatilizer aid are added to the PE recycled materials to modify the PE recycled materials, and the PE modified material is prepared. The compatilizer aid has a solubilization property and inoxidizability, compatibility between the compatilizer aid and the PE recycled materials can be further promoted, meanwhile, the oxidation resistance of the compatilizer aid is further sufficiently exerted, and a PE pipe prepared from the PE modified materials has excellent oxidation resistance. The invention further provides a preparation method of the PE modified material and the PE pipe processed from the PE modified material. The PE pipe has excellent oxidation resistance.

Description

technical field [0001] The invention belongs to the field of plastics, and in particular relates to a PE modified material and a preparation method thereof, and also relates to a PE pipe processed by using the PE modified material. Background technique [0002] The PE material used in polyethylene (PE) pipes is made of polyethylene in an appropriate proportion as the main raw material, and various processing aids such as an appropriate amount of antioxidant are added to it, and it is made after mixing→extrusion→granulation. At present, the raw materials used in the industrial preparation of the PE material are all new chemical raw materials, and the price is relatively high; and various waste PE materials are degraded in the natural environment, which is easy to cause pollution to the environment, so it is necessary to carry out various waste PE materials. Recycling and reuse, on the one hand, reduces environmental pollution, and on the other hand, reduces the production cos...

AI Technical Summary

Problems solved by technology

At present, the raw materials used in the industrial preparation of the PE material are all brand-new chemical raw materials, and the price is relatively high; and various waste PE materials are degraded in the natural environment, which is easy to cause pollution to the environment, so it is necessary to carry out various waste and old PE materials. Recycling and reuse, on the one hand, reduces environmental pollution, and on the other hand, reduces the production cost of PE pipes

[0003] When PE recycled materials are used as raw materials to produce PE pipes again, due to the large amount of impurities contained in PE recycled materials, the compatibility of polyethylene with other processing aids such as antioxidants is very poor, resulting in poor performance of the produced PE pipes. Discounted, especially the oxidation resistance and tensile strength of PE pipes are difficult to meet market demand

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