Raw materials for preparing PE (polyethylene) structure wall pipe and preparation method of PE structure wall pipe

Abstract

The invention relates to raw materials for preparing PE (polyethylene) structure wall pipe and a preparation method of the PE structure wall pipe. The raw materials comprise superfine talcum powder, white carbon black, barium sulfate, calcium carbonate whisker, HDPE (high density polyethylene), EPDM (ethylene-propylene-diene monomer), polypropylene, a composite coupling agent, polyethylene wax, zinc stearate and color black. The preparation method comprises the following steps: a, blending the components according to mass part, feeding into a high-speed mixer to mix; b, drying mixed material by using hot wind; c, cooling dried material to room temperature; d, feeding the cooled material into a double-screw extruder, carrying out plasticization extrusion, carrying out water cooling, and chopping into particles with a fixed length after cooling and shaping; and e, feeding the particles into a vibrating screen to screen, packaging the qualified particles. The PE structure wall pipe prepared by utilizing the raw materials and the preparation method is good in heat stability and mechanical property, the process flow of the corrugated pipe production is simplified, and the production cost is lowered.

Description

technical field [0001] The invention relates to a raw material of a PE structure wall pipe and its preparation method. The PE structure wall pipe includes PE double-wall corrugated pipe, PE hollow wall winding pipe, PE carat pipe, etc. All PE pipes with special physical structure belong to PE structure The wall pipe category belongs to the technical field of plastic pipes. Background technique [0002] PE structural wall pipe is a kind of polyethylene as raw material, which is processed by extrusion and special molding process. It has the characteristics of light weight, high pressure resistance, good toughness, fast construction and long life. Good corrosion resistance, high insulation, smooth inner wall, small flow resistance, etc., and because of the special hollow ring structure, it has excellent ring stiffness, good strength and toughness, light weight and strong impact resistance , Not easy to break and so on. At present, it has been widely used in many fields in dev...

AI Technical Summary

Problems solved by technology

[0005] Disadvantages: The rigidity of the pipe made of pure PE cannot meet the requirements. If the ideal rigidity is to be achieved, the wall thickness must be thickened, and the cost remains high.

[0007] Disadvantages: The formulas of various companies and the masterbatches used are mixed, and the product quality cannot be guaranteed

Because the single-screw extrusion mode is used to produce pipes, and various raw materials are blended and extruded, it is impossible for a single screw to plasticize various raw materials uniformly, so the performance of the produced pipes is more or less unsatisfactory, especially the pipes Ring flexibility and impact resistance indicators are difficult to meet the standards