Preparation and production process of modified polypropylene flat-wall reinforced corrugated pipe

Abstract

The invention provides a preparation and production process of a modified polypropylene flat-wall reinforced corrugated pipe. The preparation and production process comprises the following steps of preparing an outer layer material in proportion; adding a flame retardant, a coloring agent and high-temperature-resistant fuel after preliminary mixing is finished, and performing stirring at a high speed for 10-15 minutes to obtain an outer layer mixture; preparing an inner layer material in proportion, putting the inner layer material into a stirrer, and performing high-temperature melting and stirring to obtain an inner layer mixture; stacking the inner layer mixture and the outer layer mixture in proportion, performing heating and plasticizing after stacking, and conveying to a high-pressure extruder to extrude, so as to obtain a corrugated pipe prefabricated product; rapidly placing the corrugated pipe prefabricated product in a shaping mold, and performing rapid shaping and flaring; after shaping and flaring of the corrugated pipe prefabricated product, performing demolding, and spraying and cooling the surface after demolding; and after a cooled corrugated pipe is subjected to fixed-ratio cutting in proportion, mounting a connecting piece, and making the modified polypropylene flat-wall reinforced corrugated pipe. According to the process, the limitation of an existing corrugated pipe functional additive on the corrugated pipe transportation range is effectively avoided, the application range of the corrugated pipe is widened, and the structural strength of the corrugatedpipe is improved.

Description

technical field [0001] The invention relates to the field of alloy composite pipe products, in particular to the preparation and production process of a modified polypropylene flat-wall reinforced corrugated pipe. Background technique [0002] Polymer blends, commonly known as polymer alloys, are a class of materials with uniform appearance and multi-component polymer systems containing two or more different structures. Through blending, the material mechanical properties and processing properties of polymer materials can be improved, costs can be reduced, and the scope of application can be expanded. Therefore, it is one of the important ways to realize polymer modification and produce multi-performance new materials. [0003] Polypropylene (PP) is a thermoplastic synthetic resin with excellent performance. It is a colorless and translucent thermoplastic lightweight general-purpose plastic with chemical resistance, heat resistance, electrical insulation, high-strength mech...

AI Technical Summary

Problems solved by technology

[0005] The existing polypropylene bellows are prepared by integrated molding, and the prepared bellows contain flame retardants, heat stabilizers and other functional additives that contain many substances that easily react with the materials transported by the bellows, which greatly affects the The scope of application of propylene bellows, if no functional additives are added, the surface strength and structural performance of the bellows will be greatly reduced and some market competitiveness will be lost