Glass reinforced plastic ribbed sand-included tube and manufacture method thereof

Abstract

A manufacture method a glass reinforced plastic ribbed sand-included tube comprises the following steps of: (1) preparing raw material plastic to a plastic belt with front smooth side and reverse ribbed side, wherein the plastic belt is positively faced to a preset die and is wrapped around the outer diameter of the die for at least one coil to form a plastic ribbed liner; (2) pre-mixing unsaturated polyester resin or epoxy resin with quartz sand and then spirally wrapping sand holding cloth on the plastic ribbed liner for at least one coil to form a sand-included enhanced protection layer; (3) wrapping a glass fiber silk which is socked with unsaturated polyester resin or epoxy resin outside the sand-included enhanced protection layer for at least one coil to form an outer wrapping protection layer; and (4) curing, trimming and de-molding to form the glass reinforced plastic ribbed sand-included tube. According to the invention, a design structure with enhanced and compact liner, reinforced middle part and evenly, repeatedly and repeatedly wrapped outer glass fiber is adopted so that internal and external binding forces are greatly enhanced. The glass reinforced plastic ribbed sand-included tube has the characteristics of good corrosion resistance and wear resistance and excellent toughness and is particularly suitable for big-diameter rain and sewerage pipes deeply buried underground during urban construction.

Description

technical field [0001] The invention relates to a municipal sewage discharge pipe and a corresponding manufacturing method, and is especially suitable for municipal large-diameter drainage and sewage discharge pipes and the corresponding manufacturing method. Background technique [0002] Most of the sewage pipes used in the municipal administration now use PVC pipes, PE pipes, and PP pipes with small diameters. The above-mentioned plastic pipes are widely used because of their low cost of raw materials and simple manufacturing. However, PVC pipes, PE pipes, and PP pipes are used in large-diameter For pipes, because the die head, the chain rotary die and the whole unit are quite large, the requirements for the die head and installation accuracy are high, and the transmission system and control system are also very complicated, and the equipment is expensive. The wall thickness causes poor fluidity and cannot ensure its stability and ring rigidity, so it is difficult to manuf...

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a method for manufacturing FRP reinforced sand pipes to solve the problem that in the prior art, the inner lining of FRP pipes with sand inclusions has undergone long-term scouring by a large amount of water, resulting in obvious delamination of the pipe wall and fiber tensile damage. , falling off, breaking and other phenomena, bringing huge hidden dangers to safety technical problems

[0005] The second purpose of the present invention is to provide a FRP reinforced sand pipe to solve the technical problems of heavy pipe weight, difficult construction and high cost of large-diameter pipes in the prior art

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