Wear-resistant and high-temperature-resistant powder coating for oil well pipe

Abstract

The invention discloses a wear-resistant and high-temperature-resistant powder coating for an oil well pipe, and belongs to the field of coatings. According to the technical scheme, the coating is prepared from, by weight, 100 parts of epoxy resin, 40-60 parts of phenolic resin, 10-16 parts of a curing agent, 10-20 parts of graphene oxide, 15-30 parts of a silane coupling agent, 1-5 parts of an anti-caking agent, 20-40 parts of talcum powder, 18-38 parts of mica powder and 10-30 parts of an antioxidant. The effect of improving high temperature resistance of the coating is achieved.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a wear-resistant and high-temperature-resistant powder coating for oil well pipes. Background technique [0002] Powder coatings are made of resin, pigments and fillers, curing agents and other additives, mixed in a certain proportion, and then processed by crushing and sieving equipment. Powder coatings are stable in storage at room temperature. After electrostatic spraying, friction spraying or fluidized bed Dip coating, reheating and baking to melt and solidify to form a flat and bright coating film. The early application of powder coatings was mainly in the anti-corrosion and electrical insulation of container pipes. After the 1950s, with the rapid development of this new technology With the development, its new varieties are constantly emerging, its performance is constantly improving and improving, and its application fields are constantly expanding, such as household appliances, tr...

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Problems solved by technology

[0003] At present, the exploration and development of most oil wells in my country has entered the later stage. With the in-depth development of oil fields, a large number of chemical additives are used for oil displacement during oil production, and chemical additives cause corrosion to downhole tubing and sucker rods. However, the epoxy powder coating used for downhole oil pipes and sucker rods has relatively poor high temperature resistance. Under long-term high temperature conditions, the coating film decomposes, which reduces the protective effect of the paint on oil well pipes and causes corrosion of oil pipes.