Fiber reinforcement type brittlement radical compound material pipeline coatings, its coating method and pipeline

Abstract

The invention relates to a pipe coating layer with a fiber intensified crisp base complex material and the preparation method thereof and a pipe coated by using the method. The coating layer is made from a concrete base material, an inert stuff, an intensified fiber, water and a chemical additive; the pipe obtained consists of a pipe body, an anti-corrosive material layer adhered on the surface of the pipe body, and the fiber intensified crisp base complex material layer wrapping the surface of the anti-corrosive material layer, the pipe obtained can also consist of the pipe body and the fiber intensified crisp base complex material layer adhered on the surface of the pipe body. The pipe coating layer has the advantages of isotropy, tensile strain hardening, shock resistance, abrasion resistance and being bendable, and can be used for protecting pipe and the anti-corrosive layer outside the pipe wall from being damaged, improving the mechanical strength of the pipe, decreasing the wall thickness of the pipe body material, or being acted as a pipe concrete balance weight; the bending degree of the coated pipe can exceed the permanent deformation of 1.5 degrees / pipe diameter without producing any split or peeling of the outmost coating layer.

Description

technical field [0001] The invention relates to a fiber-reinforced brittle-matrix composite material coating, a coating method thereof, and a pipe coated by the method. Background technique [0002] Polymer materials such as resinous materials are usually used as anti-corrosion materials to coat the outer surface of metal pipes used in the application field of oil and gas pipelines to prevent the intrusion of water or other corrosive substances, thereby protecting metal pipes from corrosion damage. This resinous layer is invaluable in maintaining the integrity of the pipe after it has been installed. However, in the process of transportation and installation, both the pipe and the anti-corrosion layer may be damaged, such as collision during handling and transportation, mechanical damage, collision and wear caused by the falling of surrounding rocks during construction, in order to prevent this potential In case of damage, the current construction method generally adopts th...

AI Technical Summary

Problems solved by technology

However, due to the high brittleness of this coating, its application on land is limited. At the same time, it is also a layered structure reinforced by steel mesh, and the preparation process is complicated.

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