A resin-based composite sandwich structure pipe and its synchronous winding manufacturing method

Abstract

The invention discloses a resin matrix composite interlayer structural tube and a synchronous winding manufacturing method of the resin matrix composite interlayer structural tube. A lining layer, an inner structural layer, an interlayer structure and an outer structural layer are sequentially arranged from inside to outside. The 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 manufactured in the mode that framework structures and filling materials are wound spirally and synchronously to the outer surface of the inner structural layer, gaps between the framework structures are filled with the filling materials in a winding mode, and the complete interlayer structure is formed. By means of the resin matrix composite interlayer structural tube manufactured through the interlayer structure filled with hollow or light materials, the weight of a pipeline is greatly lowered, and the light weight is achieved.

Description

technical field [0001] The invention relates to a resin-based composite sandwich structure pipe for transporting various media and a synchronous winding manufacturing method thereof. 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 kind of composite material pipe, has more...

AI Technical Summary

Problems solved by technology

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

If the high-rigidity resin-based 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 its popularization and application

As a kind of resin-based composite pipe, the FRP sand-filled pipe adopts the sandwich structure of resin-quartz sand, which reduces the cost to a certain extent, but with the further increase of the rigidity requirement, the cost will still increase a lot, and the weight will also be relatively large. Increase

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