Anticorrosive pipeline paint and its prepn

Abstract

The anticorrosive pipeline paint consists of epoxy resin 100 weight portions, fluorocarbon resin 5-15 weight portions, nylon resin 5-15 weight portions, inorganic filler 10-40 weight portions and compound curing agent 10-25 weight portions. The preparation process includes the following steps: treating the inorganic filler with titanate coupler; mixing epoxy resin, fluorocarbon resin, nylon resin and compound curing agent and smelting and extruding in a double screw extruder; freezing and crushing to 100-300 mesh, adding the inorganic filler through stirring. The anticorrosive pipeline paint has the advantages of short curing period, high corrosion resistance, high strength, low friction coefficient, hydrophobicity and lipophobicity.

Description

1. Technical Field [0001] The invention relates to an anticorrosive coating paint for high-efficiency low-friction pipelines and a preparation method thereof. 2. Background technology [0002] At present, the external anti-corrosion technologies for steel pipelines usually have the following types: [0003] One is PE structure anti-corrosion pipe. This kind of anti-corrosion pipe has a large application volume and a service life of up to 50 years. However, the production process is complicated and the cost is high. It is difficult to achieve cathodic protection by cathode shielding during use, and it is only suitable for external anti-corrosion of pipelines. Promotion and application; [0004] The second is a single FBE sprayed anti-corrosion pipe. This kind of anti-corrosion pipe has a large amount of application and good anti-corrosion effect, but it has poor impact resistance and surface scratch resistance. Cracks will appear on heavy impact and lose the anti-corrosion effect;...

AI Technical Summary

Problems solved by technology

[0003] One is the PE structure anti-corrosion pipe. This kind of anti-corrosion pipe is widely used and its service life can reach 50 years. promotion application;

[0004] The second is the single FBE sprayed anti-corrosion pipe. This kind of anti-corrosion pipe is widely used and has good anti-corrosion effect, but its impact resistance and surface scratch resistance are poor. Cracks will appear under heavy impact and the anti-corrosion effect will be lost; and it is only suitable for external anti-corrosion of pipelines.

[0005] The third is the epoxy powder system. The double-layer epoxy powder anti-corrosion pipe adopted by 3M Company and DuPont Company of the United States solves the problems in the single FBE spray anti-corrosion of the external anti-corrosion of the pipeline, but it is two different powders, which need to be sprayed separately , it is necessary to add three sets of powder supply systems and three sets of powder spraying systems, which increases equipment investment and coating difficulty, and increases production costs

However, in oil field transportation and water injection pipelines, due to the high brittleness of epoxy, poor toughness, and a relatively large friction coefficient, these make the impact resistance of the pipeline poor, and it is easy to attach impurities, which will cause pipeline blockage, directly affecting oil production and production. oil delivery