Preparation method of nano carbon black reinforced HDPE water supply pipe

Abstract

The invention discloses a preparation method of a nano carbon black reinforced HDPE water supply pipe, wherein the HDPE water supply pipe is prepared by using a HDPE resin and high-gloss black masterbatch as raw materials. According to the invention, the nano carbon black in the high-gloss black master batch prepared by the method has the advantages of large specific surface area, strong coloringpower, good light stability and obvious enhancement effect, so that the strength, the oxidation resistance and the hydrostatic strength of the water supply pipe are remarkably improved; the automatictraction cut-off device used in the method adjusts the pipe conveying speed by controlling the gearbox to adjust the rotating speeds of the first motor and the second motor, or controls the pipe conveying time of the upper crawler belt and the lower crawler belt, so that the pipe traction and fixed-length cutting process is automatically completed, the automation degree is high, and the working efficiency is improved; and the device can freely adjust the distance between the upper crawler belt and the lower crawler belt and the distance between the first clamping pipe and the second clampingpipe according to the diameter of a pipe, can be suitable for pipes of different specifications and is wide in application range.

Description

technical field [0001] The invention relates to the technical field of water supply pipe production, in particular to a method for preparing nano-carbon black reinforced HDPE water supply pipes. Background technique [0002] Water supply pipes are divided into metal pipes, composite pipes and plastic pipes. Metal pipes are mainly divided into copper pipes and stainless steel water pipes. Metal pipes have many characteristics such as safety, hygiene, and durability. They are the most ideal water pipes for home improvement and tooling; typical representatives of composite pipes are: Aluminum-plastic pipes have been gradually eliminated due to thermal expansion and contraction; plastic pipes are safe, non-toxic, easy to install, and low in price, making them the most commonly used water pipes for home improvement. [0003] The patent with application number CN201710501977.5 discloses a high-strength HDPE polyethylene water supply pipe, including the following components: high-d...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a method for preparing a nano-carbon black reinforced HDPE water supply pipe: (1) the nano-carbon black reinforced HDPE water supply pipe is prepared by using HDPE resin and high-gloss black masterbatch as raw materials , carbon black is an important additive in the plastics industry, it can improve the electrical properties, aging, coloring and mechanical properties of plastics, the most important thing is the anti-ultraviolet performance, control the electrical conductivity, reasonable raw material selection is used in this preparation method , the reasonable ratio of raw materials makes the nano-carbon black in the high-gloss black masterbatch prepared have the advantages of large specific surface area, strong coloring ability, good light stability, and obvious enhancement effect, which solves the problems of existing water supply pipes in terms of strength, The problem of defects in the degree of oxidation resistance and hydrostatic strength; (2) The rotation of the second driving wheel is driven by the operation of the first motor, which drives the track on the second driving wheel to rotate clockwise, and the rotation of the second motor drives the first driving wheel The rotation of the wheel drives the counterclockwise rotation of the crawler on the first driving wheel, and the upper and lower crawlers drive the pipe to move forward; Front conveying, the double-headed cylinder shrinks, pulls the first pinch tube and the second pinch tube close together, clamps the pipe material, drives the second helical gear to rotate through the third motor rotation, the second helical gear meshes with the first helical gear, and drives the The cutting knife rotates at high speed, and the extension plate end of the motor casing is pulled down by pushing the cylinder to shrink, and the third motor end rotates on the rotating base, driving the cutting knife to descend, and the rotating cutting knife cuts off the pipe, which solves the existing problem The tractor and cutting machine are not highly automated, and they need to use two kinds of equipment, which require high cost and large floor area; (3) by inserting the pipe into the first arc-shaped groove between the upper and lower crawlers During the process, start a number of lifting cylinders, the lifting cylinders are running, and the second support plate is controlled to rise or fall, which drives the upper track to rise or fall, and the pipe is pressed tightly; by freely controlling the contraction and extension of the double-headed cylinder, the first clamping pipe is controlled 1. The distance between the second clamping pipes is used to clamp the pipes; it solves the problem that the existing traction cutting device can only be applied to pipes of the same specification, and the applicable range is narrow

Images