Granulating process for regenerated granules of PP (Propene Polymer) belt rubber waste material

Abstract

The invention relates to a granulating process for regenerated granules of PP (Propene Polymer) belt rubber waste material. The granulating process comprises the following steps: a, the waste material is cut into small blocks through a hydraulic cutting machine; b, the cut block-shaped materials are torn apart manually, and the manually-torn raw materials are manually fed into a material feeding port of a single-screw extrusion unit at constant speed, wherein the single-screw extrusion unit consists of an upper single-screw extruder and a lower single-screw extruder; c, the raw materials are subjected to wire drawing to be moulded through the lower single-screw extruder after two steps of warming and exhausting, and then the raw materials are granulated after water cooling; raw material granules produced through the above machining process have the properties of high impact-resistance, high tenacity, cold-resistance, good integration and the like; the cost is low; an obvious toughening effect is achieved; the cost of the raw materials is lowered; and therefore a manufactured plastic product has the advantages that the tenacity is good; the product does not get crispy easily; the quality is high; the cost is low; and the like.

Description

technical field [0001] The invention relates to a granulation process, in particular to a granulation process for regenerated PP adhesive waste granules. Background technique [0002] PP polypropylene is a high polymer, mainly used in the automotive industry (mainly using PP containing metal additives: fenders, ventilation pipes, fans, etc.), appliances (dishwasher door gaskets, dryer ventilation pipes, washing machines Frames and covers, refrigerator door liners, etc.), consumer goods (lawn and garden equipment such as lawnmowers and sprinklers, etc.). Polypropylene (PP) is a lighter type of common plastics. It has excellent electrical properties and can be used as a heat-resistant high-frequency insulation material. PP is a crystalline polymer. When the melt condenses, it has a large change in specific volume and a degree of molecular orientation. High and showing a large shrinkage rate (1.0% -1.5%). [0003] Nowadays, plastic tools with PP as the main material are used ...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, plastic tools with PP as the main material are used in both industry and daily life. After the tools are scrapped, they need to be recycled for industrial processing to form new plastic particles, which are used as raw materials to process new products. At present, the performance of recycled particles produced by the molding process of ordinary waste plastic recycled particles is worse than that of the original raw materials, and the impact resistance, toughness, cold resistance and fusion of products produced after recycling waste plastics are not as good as original product

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