Glass fiber-reinforced plastic composite pipe and machining method thereof

Abstract

The invention belongs to the technical field of composite pipe machining, and particularly relates to a glass fiber-reinforced plastic composite pipe and a machining method thereof. The machining method comprises the steps that (1) glass fiber-reinforced plastic is arranged on a cylindrical inner mould in a winding mode to form an inner liner layer, and first glass fiber rebars are arranged in thecircumferential direction of the cylindrical inner mould at intervals before winding arranging is carried out; (2) the cylindrical inner mould is removed after the inner liner layer is solidified, and an outer mould sleeves the inner liner layer, and composite resin materials are poured in a cavity between the inner liner layer and the outer mould to form a structural layer; (3) the outer mould is removed, second glass fiber rebars are arranged outside the structural layer in a winding mode, and the second glass fiber rebars are enabled to have prestressing force due to the applying of the tension in the process of winding the second glass fiber rebars; and (4) outer protecting materials are coated to obtain the glass fiber-reinforced plastic composite pipe. According to the machining method, the resistant capacity of the pipe wall of the glass fiber-reinforced plastic composite pipe to inner high pressure fluid is improved, and thus the conveying requirements of the high pressure fluid are met.

Description

technical field [0001] The invention belongs to the technical field of composite pipe processing, and in particular relates to a glass fiber reinforced plastic composite pipe and a processing method thereof. Background technique [0002] Pipes are very common in daily life. Commonly used are water supply pipes, drain pipes, gas pipes, heating pipes, wire conduits, rainwater pipes, etc. With the development of technology, the development of pipes has experienced ordinary cast iron pipes, cement pipes, and ductile iron pipes. , galvanized steel pipe, plastic pipe and aluminum-plastic composite pipe, etc. Among them, glass steel pipes have been widely used in various fields due to their unique strong corrosion resistance, smooth inner surface, low energy consumption for transportation, and long service life. [0003] Traditional FRP pipes are made of glass fiber and its products as reinforcing materials, unsaturated resin, epoxy resin, etc. as basic materials, and inorganic no...

AI Technical Summary

Problems solved by technology

However, the overall strength of the existing glass steel pipe is low, and the pressure resistance of the pipe wall is low, so that it cannot be applied to the delivery of high-pressure fluid; further, when the traditional glass steel pipe is transporting high-pressure fluid, the friction of the inner wall The resistance will increase, so that the pressure drop of the pipe when transporting high-pressure fluid is too large, and the energy consumption of fluid transport will increase

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