Fiber-reinforced flame-retardant and antistatic thin-wall steel-plastic composite pipe and its forming process

Abstract

The invention discloses a fiber reinforcement inflaming retarding anti-static electricity thin-wall steel plastic composite pipe. The fiber reinforcement inflaming retarding anti-static electricity thin-wall steel plastic composite pipe structurally comprises a metal pipe-shaped framework, the metal pipe-shaped framework is a thin-wall metal pipe, the outer wall of the thin-wall metal pipe forms an outer transition interface layer with the help of the coating or winding technology, the inner wall of the thin-wall metal pipe forms an inner transition interface layer with the help of the spraying technology, a fiber resin reinforcing layer is formed on the outer surface of the outer transition interface layer with the help of the winding technology, and an abrasion-resisting anti-static electricity coating layer is formed on the inner surface of the inner transition interface layer with the help of the coating layer. The fiber reinforcement inflaming retarding anti-static electricity thin-wall steel plastic composite pipe has the advantages of being low in weight, capable of retarding inflame, resisting abrasion and resisting corrosion, strong in interface combination and the like, the inflame retarding performance of the composite pipe meets the requirement of MT181-88, the surface resistance of the composite pipe is 1*106 Ohm, the interface combination strength reaches the first level, the weight of the composite pipe is about half of an ordinary steel plastic composite pipe, installing difficulties and labor intensity are greatly reduced, and the anti-bending, anti-pressing and anti-impacting capability is strong.

Description

technical field [0001] The invention relates to a transportation pipeline used in inflammable and explosive places such as underground coal mines, in particular to an improvement in the structural design of a fiber-reinforced flame-retardant and antistatic thin-walled steel-plastic composite pipe. Background technique [0002] Many fields such as coal mines, oil and gas extraction and transportation require pipelines of different diameters to transport gases, liquids and fluidized solid particles. These fields not only require pipelines to have conventional physical performance indicators (such as bending resistance, compression resistance, impact resistance, antistatic), but also need to have excellent chemical performance indicators (corrosion resistance, flame retardancy, and wear resistance). In the past ten years, non-metallic materials such as PVC and FRP have been widely used in these fields, and have also solved the problems of flame retardancy and antistatic. H...

AI Technical Summary

Problems solved by technology

This structure has the advantages of both plastic pipes and metal pipes, but compared with metal pipes, the metal skeleton reinforcement with a mesh structure is far from the overall index of compression resistance, tensile strength and burst resistance.

It is inevitable that the thickness of the outer layer and the inner layer of the composite plastic is required to be relatively large, so that the wall of the steel-plastic composite pipe is thickened and the weight is increased, forming a contradiction of mutual restriction.

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