Novel cement-based composite anti-corrosive paint

Abstract

The invention discloses a novel cement-based composite anti-corrosive paint. The paint comprises a solid phase and a liquid phase, wherein the mass ratio of the liquid phase and the solid phase is 0.3-1.0; the solid phase comprises sand, cement and fiber, the mass ratio of the sand and the cement is 0.3-2.0, and the mass percent of the fiber in the solid phase is 0.5-5.0 percent; the liquid phase comprises polymer emulsion, water and admixture, the mass percent of the polymer emulsion in the liquid phase is 10-40 percent; the mass percent of the water in the liquid phase is 60-85 percent; and the mass percent of the admixture in the liquid phase is 0-5 percent. As the anti-corrosive paint for oil-gas pipelines, the novel cement-based composite anti-corrosive coating has good impact resistance, corrosion resistance, impermeability, contraction inhibition and good durability, is environment-friendly and has significance for sustainable development, and the application of wastes reduces the production cost; and the paint has the effect of multi-cracking with the cracking width within the micron range under load acting force, can be directly coated, has simple laying process, and can be used as the anti-corrosive paints of petroleum and natural gas pipelines.

Description

technical field [0001] The invention relates to a coating, in particular to a novel cement-based composite anticorrosion coating. Background technique [0002] As one of the five major means of transportation, pipelines have special advantages in transporting liquids, gases, and slurries. However, the corrosion protection of pipelines is one of the difficulties to be solved at present. Pipeline anticorrosion materials usually use organic polymer materials, which have good anticorrosion performance. However, the coating of these materials is thin, expensive and has weak impact resistance. Fine soil without stones must be used for backfilling in pipeline laying , In the rocky area, the fine soil needs to be transported from a distance, and the engineering cost is very high. Moreover, the lifespan of these coating materials will be shortened due to ultraviolet radiation and weathering, and they need to be reused continuously, and the cumulative cost of consumption is relativel...

AI Technical Summary

Problems solved by technology

Pipeline anticorrosion materials usually use organic polymer materials, which have good anticorrosion performance. However, the coating of these materials is thin, expensive and has weak impact resistance. Fine soil without stones must be used for backfilling in pipeline laying , in rocky areas, the fine soil needs to be transported from a distance, and the engineering cost is very high

Moreover, these coating materials are subject to ultraviolet radiation and weathering will cause their lifespan to be shortened, and they need to be reused continuously, and the cost of cumulative consumption is relatively high.

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