Preparation method of ultrahigh molecular weight polyethylene composite tube compactly lined with glass fiber reinforced plastic

Abstract

The invention discloses a preparation method of an ultrahigh molecular weight polyethylene composite tube compactly lined with glass fiber reinforced plastic. The method comprises the following steps of: firstly, selecting a glass reinforced plastic tube according to the demand of the client; secondarily, preparing the ultrahigh molecular weight polyethylene tube; thirdly, retracting the ultrahigh molecular weight polyethylene tube to the glass reinforced plastic tube; fourthly, after the ultrahigh molecular weight polyethylene tube is retracted to the glass reinforced plastic tube, rebounding the whole tube in a high temperature oasthouse so as to compactly combine the two tubes; and fifthly, heating the ultrahigh molecular weight polyethylene composite tube extending at both ends by an electric heating ring, flanging and treating the end faces. The ultrahigh molecular weight polyethylene composite tube compacted lined by adopting the glass reinforced plastic tube as a mother tube replaces the steel tube of a common composite tube, so that the integral weight of the tube is lightened, and the tube is more convenient to install. When the tube is affected by external temperature, in particular low temperature, and the shrinkage ratios of the two different materials are relatively approximate, so that the condition that the orifice of the ultrahigh molecular weight polyethylene tube lined is broken is avoided, thereby prolonging the service life of the product.

Description

technical field [0001] The invention relates to a method for producing a glass steel pipe lined with a polyethylene composite pipe, in particular to a method for the glass steel pipe to be tightly lined with an ultra-high molecular weight polyethylene composite pipe. Background technique [0002] Due to the relatively poor installation conditions of mine tailings pipelines, in the early stage of construction, there is no road, and vehicles cannot drive to the site. Many pipelines are manually lifted up, such as ceramic composite pipes and bimetallic composite pipes. , cast stone pipes, etc. because the unit weight is too heavy, the pipes cannot be transported to the construction site. Because ultra-high molecular weight polyethylene pipes have good wear resistance, and are relatively light in weight and easy to install, ultra-high molecular weight polyethylene pipes have emerged as the times require. [0003] However, the single ultra-high molecular weight polyethylene pipe...

AI Technical Summary

Problems solved by technology

directly affect the service life of the product