Ultra-high molecular weight polyethylene pipe and modified additive for producing same

Abstract

The invention provides an ultra-high molecular weight polyethylene pipe and a modified additive for producing the same, belongs to the technical field of pipe production, and aims to solve the technical problems that the molecular weight of the produced ultra-high molecular weight polyethylene pipe is reduced, abrasion resistance, impact resistance, lubrication, impact absorption and the like of the produced ultra-high molecular weight polyethylene pipe do not reach indexes and the like as common polyethylene powder is added when an ultra-high molecular weight polyethylene pipe is produced in the current. The modified additive is prepared from, by weight, 600-800 parts of bright lubrication dispersing agents, 100-200 parts of stearic acid, 100-200 parts of ultra-high molecular polysiloxane, 90-150 parts of zinc stearate, 80-150 parts of calcium stearate and 50-150 parts of antioxidants. The ultra-high molecular weight polyethylene pipe prepared by the modified additive is prepared from, by weight, 30-50 parts of ultra-high molecular weight polyethylene, 1-2 parts of macromolecule wax and 0.8-1.5 parts of modified additive for producing the ultra-high molecular weight polyethylene pipe.

Description

technical field [0001] The invention relates to the technical field of pipe production, in particular to a modification aid for producing ultra-high molecular weight polyethylene pipes and pipes. Background technique [0002] Ultra-high molecular weight polyethylene (HMW-PE) refers to a linear structure polyethylene with a viscosity average molecular weight of more than 1.5 million. It is a thermoplastic engineering plastic with excellent performance. It combines the outstanding properties of many plastics, especially in impact resistance, Abrasion resistance, chemical corrosion resistance, self-lubrication, high environmental protection and shock absorption performance are the highest values ​​among existing plastics, so they are called "amazing plastics". [0003] In the existing production of ultra-high molecular weight polyethylene pipes, when producing ultra-high molecular weight polyethylene pipes with a molecular weight of 1.5 million to 3 million, it is necessary to ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of adding ordinary polyethylene powder when producing ultra-high molecular weight polyethylene pipes with a molecular weight of 1.5 million to 3 million, so that the molecular weight of the produced ultra-high molecular weight polyethylene pipes is reduced, making it resistant to wear and tear. Impact, self-lubricating, impact-absorbing properties, etc. cannot meet the targets, and it is not easy to produce ultra-high molecular weight polyethylene pipes with a molecular weight of 3 million to 10 million. The production process is prone to material slippage, winding the screw, increasing extrusion power, and difficult extrusion. To solve the technical problems of production and other issues, provide a modification aid and pipe for the production of ultra-high molecular weight polyethylene