A kind of resin-based composite sandwich structure pipe and its secondary winding manufacturing method

Abstract

The invention discloses a resin matrix composite interlayer structural tube and a secondary winding manufacturing method thereof. A lining layer, an inner structural layer, an interlayer structure and an outer layer structure are arranged from interior to exterior in sequence. The inner lining layer, the inner structural layer and the outer structural layer are made of resin matrix composite materials in a traditional winding mode. The interlayer structure is made in the mode that impregnated fiber or fabric of the fiber is adopted in a bar-shaped framework structure and circularly wound to form a winding structure, and the winding structure and the framework structure are circularly wound to the surface of the inner structural layer according to a fiber winding method to form the interlayer structure. By means of the resin matrix composite interlayer structural tube made of the interlayer structure filled with hollow or light materials, the weight of a pipeline is greatly reduced, and the light weight is achieved. The winding structure outside the interlayer structure is identical with the inner structural layer and the outer structural layer in material and can be well combined with the inner structural layer and the outer structural layer, the interface problem does not exist, and higher reliability is achieved.

Description

technical field [0001] The invention relates to a resin-based composite sandwich structure pipe for conveying various media and its secondary winding manufacturing method. Background technique [0002] At present, there are many types of pipes in the water supply and drainage industry, such as concrete pipes, steel pipes, resin-based composite pipes, etc., which are more common. Each type of pipe has its advantages and disadvantages. For example, steel pipes have high strength and rigidity, but are easy to rust; concrete pipes have high rigidity and low price, but poor hydraulic performance and heavy weight; resin-based composite pipes mainly refer to composite material pipes made of resin as the matrix after reinforcement, such as fiber reinforced pipes. Plastic pipe with excellent corrosion resistance and hydraulic properties, but with low stiffness. In terms of comprehensive comparison, resin-based composite pipe, as a new type of pipe, has more prominent advantages and ...

AI Technical Summary

Problems solved by technology

However, the disadvantage of low rigidity of resin-based composite pipes makes it easy to deform and even cause damage under poor geological conditions or poor backfill construction.

If the high-rigidity resin-based composite pipe is made according to the existing structure and manufacturing process, the cost will inevitably increase a lot, and the weight will also increase a lot, which is not conducive to market promotion and application

As a kind of resin-based composite pipe, FRP sand-filled pipe adopts the sandwich structure of resin-quartz sand, which reduces the cost to a certain extent, but it has obvious interface problems, and the quality is not easy to control. At the same time, the cost will still increase when the rigidity is further increased. There is a greater increase and a greater increase in weight

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