High-stiffness composite tube formed through fixed length winding and manufacturing method thereof

Abstract

The invention discloses a high-stiffness composite tube formed through fixed length winding. The tube wall of the composite tube structurally and sequentially comprises an inside liner, an inner structure layer, an interface adaptation layer, an intermediate structure layer, an interface adaptation layer, an outer structure layer and an outer protective layer from inside to outside, wherein the inside liner, the inner structure layer, the outer structure layer and the outer protective layer are made of resin matrix composites, and the resin matrix composite is made of glass fibers and fabrics thereof, and resin; the intermediate structure layer is made of fiber reinforced concrete cement-based composite material; the interface adaptation layers are made of the mixture of organic bonding material and quartz sand. The prepared composite tube has the advantages that the stiffness of the composite tube is more than ten times of that of a commonly used glass steel tube at present, the weight of the composite tube is one third of that of a normal concrete pipe, the defects that the glass steel tube is low in stiffness and the concrete pipe is heavy are overcome, the cost of the composite tube is between the costs of the glass steel tube and the concrete pipe, and the composite tube is good in economic performance.

Description

technical field [0001] The invention relates to a fixed-length winding high-rigidity composite pipe and a manufacturing method thereof. Background technique [0002] FRP pipe is a resin-based composite pipe with light weight, high strength, corrosion resistance, and excellent hydraulic performance. It is widely used in water supply and drainage pipeline engineering and other industries. However, its rigidity is low, and it is a flexible pipe with large deformation and high construction requirements. If you want to further increase its height without changing the structure of the existing glass steel pipe, the cost will increase a lot, mainly because the cost of the base material resin is too high. [0003] The cement-based material concrete is relatively cheap. The wall thickness of cement-based pipes is very thick and the rigidity is very high. However, a single cement-based pipe such as PCCP is not corrosion-resistant, has poor hydraulic performance, is too bulky, and is ...

AI Technical Summary

Problems solved by technology

However, its rigidity is low, it is a flexible pipe, and its deformation is relatively large, so it has high requirements for construction.

If you want to further increase its height without changing the structure of the existing FRP pipe, the cost will increase a lot, mainly because the cost of the matrix material resin is too high

[0003] The cement-based material concrete is relatively cheap. The wall thickness of the cement-based pipeline is very thick and the rigidity is very high. However, a single cement-based pipeline such as PCCP is not corrosion-resistant, has poor hydraulic performance, is too bulky, and is inconvenient for construction and transportation.

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