Fiber reinforcement type brittle composite material pipeline coatings, its coating method and pipeline

Abstract

The invention relates to a fiber-reinforced brittle matrix composite material pipeline coating, a preparation method thereof, and a pipeline coated by the method. The coating is prepared from cement-based materials, inert fillers, reinforcing fibers, water and chemical additives as raw materials The obtained pipeline is composed of a pipe body, an anti-corrosion material layer adhered to the surface of the pipe body and a fiber-reinforced brittle matrix composite material layer surrounded on the surface of the anti-corrosion material layer, or a pipe body and a fiber reinforced layer adhered to the surface of the pipe body. brittle matrix composite material layer. This kind of pipeline coating is isotropic, tensile strain hardening, impact resistance, wear resistance and bendable; it can be used to protect the pipeline itself and the anti-corrosion layer outside the pipe wall from damage, increase the mechanical strength of the pipeline itself, and reduce the main material of the pipeline The wall thickness of the coated pipe can be used as a cement counterweight for the pipe; the coated pipe can be bent over a permanent deformation of 1.5° / pipe diameter, and the outermost coating will not crack or fall off.

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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