Modifier for regeneration processing of mixed waste plastic tube material and usage method thereof

Abstract

The invention discloses a modifier for regeneration processing of mixed waste plastic tube materials. The modifier comprises the following components by weight: 1-6 parts of maleic anhydride, 2-6 parts of chlorinated polyethylene, 3-8 parts of an ethylene-vinyl acetate copolymer, 4-9 parts of a styrene-butadiene-styrene block copolymer and 5-9 parts of styrene. A preparation technology of the modifier is as below: adding raw materials into a high speed feed mixer for uniform mixing, discharging and cooling for standby. A usage method of the modifier for regeneration processing of mixed waste plastic tube materials comprises the following steps: (1) classifying to obtain waste plastic tube materials; (2) crushing, washing, dehydrating, drying, dehumidifying and detecting the mixed waste plastic tube materials; (3) mixing and heating the modifier with the mixed waste plastic raw materials, carrying out a grafting reaction, and cooling for standby; and (4) granulating. The invention has the advantages of simple process, convenient operation, low cost and no pollution, and can be widely used in the field of regeneration processing of waste plastic tubes.

Description

technical field

[0001] The invention relates to a recycling processing aid for waste plastics and an application method thereof, in particular to a recycling processing modifier for mixed waste plastic pipe materials and a using method thereof. Background technique

[0002] As we all know, the traditional method of recycling waste plastics is generally to reheat and plasticize waste plastics to make them enter a viscous flow state and then pelletize them for utilization. Due to the high uneven heating of waste plastics, this method depolymerizes the macromolecular chains, loses some of the original compatibility of waste plastics, and greatly reduces its physical properties, and heating under the condition of moisture will make the plastics Further aging and degradation, therefore, the waste plastic recycled plastic processed by this method is of poor quality. In recent years, although some enterprises and researchers have added modifiers to waste plastics, the mechanical p...