Color changing process for PE regenerated particles with excellent performance

Abstract

The invention discloses a color changing process for PE regenerated particles with excellent performance, and belongs to the technical field of PE materials, the color changing process comprises the following steps: S1, sorting and crushing: sorting and crushing recycled PE plastic products through a semi-automatic sorting line and a crusher; s2, washing and soaking: putting the product obtained in the step S1 into a bleaching pool for washing at the water temperature of 35-38 DEG C for 4-5 hours; s3, drying: putting the product obtained in the S2 into a spin-drying machine for spin-drying; s4, color sorting: dividing the area obtained in S3 into a PE transparent material and other PE color materials by using a color sorter; and S5, granulation: respectively putting the mixture obtained in the step S4 into a granulator according to color types and batches, and granulating. The PE regenerated particles prepared by the process are close to the color of a new material, the mechanical property is enhanced, the impact resistance and toughness of the PE regenerated particles are improved, the enterprise cost is reduced, and the application range of the waste PE regenerated particles is expanded.

Description

technical field [0001] The invention relates to a process for changing the color of PE regenerated particles with excellent performance, and belongs to the technical field of PE materials. Background technique [0002] The Chinese name of PE is polyethylene. It is a thermoplastic resin obtained by polymerization of ethylene. In industry, it also includes copolymers of ethylene and a small amount of α-olefin. Polyethylene is odorless, non-toxic, and feels like wax. It has excellent properties. Low temperature resistance, good chemical stability, corrosion resistance of most acids and alkalis, insoluble in general solvents at room temperature, low water absorption, excellent electrical insulation, with the rapid development of social economy, PE material as a new construction material It is used more and more widely in our daily life, and it is also welcomed by more and more people. However, most people only use PE plastic products once and then discard them. The phenomenon of...

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Problems solved by technology

[0002] The Chinese name of PE is polyethylene. It is a thermoplastic resin obtained by polymerization of ethylene. In industry, it also includes copolymers of ethylene and a small amount of α-olefin. Polyethylene is odorless, non-toxic, and feels like wax. It has excellent properties. Low temperature resistance, good chemical stability, corrosion resistance of most acids and alkalis, insoluble in general solvents at room temperature, low water absorption, excellent electrical insulation, with the rapid development of social economy, PE material as a new construction material It is used more and more widely in our daily life, and it is also welcomed by more and more people. However, most people only use PE plastic products once and then discard them. The phenomenon of waste is serious and not conducive to environmental protection. Waste PE plastics are recycled and rebuilt. At present, the regenerated PE particles after recycling are dark yellow in color, with low product purity, more impurities, and poor mechanical properties, which are not conducive to the widespread use of waste PE recycled particles.

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