Continuous fiber PE composite pressure tube production method

Abstract

The invention relates to a continuous fiber PE composite pressure tube production method which can radically solve the problems of stretching and inward collapsing of a plastic tube. The method comprises the steps that a preheated steel drum mold starts to rotate after the preheated steel drum mold is hoisted to a forming working position, heating is conducted on the steel drum mold again by firespitting through a moving winding platform located on a forming machine side, and the temperature of the steel drum mold reaches 110 DEG C or above; strip-shaped plastic plates are extruded by a plastic extruder on the winding platform and spirally wound on the surface of the steel drum mold, the width of plastic belts is greater than a winding screw pitch, a complete plastic layer is wound on thesurface of the steel drum mold, a fiber belt made of prepreg resin adopts the same winding method as plastic, a side of the fiber belt made of the prepreg resin is placed on the surface of the plastic and wound on the surface of the plastic to form a second layer, and winding is conducted to the end of the mold; the end of the mold is a bell end, the bell end section is wound by a thicker fiber belt made of the prepreg resin and then returns along with a heating device, the fiber belt made of the prepreg resin is adopted to wind a second layer, the winding method is the same as the winding method of the first layer of the fiber belt made of prepreg resin, after a distance, the plastic extruder is started again, the method is the same as the winding method of the first plastic layer, a layer of plastic is wrapped on the outer side of the fiber belt layer of the prepreg resin, and according to the operating manner, the continuous fiber PE composite pressure tube enhanced by the fiber belt made of the prepreg resin in the intermediate layer and plastic in the inner and outer layers is formed when a terminal is reached.

Description

technical field [0001] The invention relates to a continuous fiber PE composite pressure pipe production method that can fundamentally solve the problem of stretching and inward collapse of plastic pipes, and belongs to the field of composite pipe production methods. Background technique [0002] In recent years, the continuous fiber composite pressure pipe has developed rapidly, involving a variety of composite methods. The fiber tape that has been pre-impregnated resin is wound and coated on the outer surface of the plastic pipe, and then the surface of the fiber tape pre-impregnated resin is wrapped. Layers of plastic, thus forming a fiber tape with inner and outer layers of plastic and a middle layer pre-impregnated with resin. The anti-bit strength of the resin is (6-10) MPa, while the tensile strength of the fiber tape of the pre-impregnated resin is (600-900) MPa, which is of great significance. After compounding in this way, the plastic pipe with the same performanc...

AI Technical Summary

Problems solved by technology

In order to solve the problem that the production cannot continue due to the stretching and inward collapse of the plastic pipe, a supporting mandrel is designed for the inner plastic pipe. The temperature reaches above 160 degrees without inward collapse, providing temperature conditions for the bonding of winding pre-preg resin fiber tapes; at the same time, due to the fixed-length production, the production of pipes does not require a tractor, so that the hot plastic can be wound and formed, and The diameter of the inner mandrel is fixed, and the size of the continuous fiber plastic composite pressure pipe is stable, meeting the requirements for use

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