Anticorrosive and antirust powder coating for pipeline

Abstract

The invention discloses an anticorrosive and antirust powder coating for a pipeline. The powder coating is prepared from the following raw materials in parts by weight: 8 to 9 parts of palygorskite, 0.16 to 0.2 parts of an aluminum-zirconium coupling agent, 0.5 to 0.6 parts of an organic silicone leveling agent, 0.2 to 0.3 parts of polydimethyl siloxane, 8 to 10 parts of titanium dioxide, 5 to 6 parts of graphene, 1 to 2 parts of rubber powder, 0.2 to 0.3 parts of octadecenedioic acid, 2 to 3 parts of dibutyl sebacate, 4 to 5 parts of a dicyandiamide curing agent, 90 to 100 parts of bisphenol A type epoxy resin, 6 to 8 parts of phenol-formaldehyde resin, 0.1 to 0.2 parts of rare earth chloride, 15 to 18 parts of chitosan and 4 to 5 parts of polyvinyl alcohol. A preparation process is simple, the raw materials are easily obtained, a cured film is high in hardness and anticorrosive and antirust performance, and has remarkable economical and social benefits, and service life of the pipeline can be prolonged when the powder coating is used for the pipeline.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to an anti-corrosion and anti-rust powder coating for pipelines. Background technique [0002] Powder coating has the characteristics of solvent-free, non-environmental pollution, powder recovery and high utilization rate, and has been widely used. Powder coatings can be divided into two categories: thermoplastic and thermosetting. Thermoplastic powder coatings use thermoplastic resin as a film-forming substance. Its characteristic is that the synthetic resin becomes soft as the temperature rises and becomes hard after cooling. This process can be repeated many times, and it will gradually age after each change. Eventually it becomes a non-plastic powder. Thermosetting powder coatings use thermosetting synthetic resins as film-forming substances. It is characterized by the use of some prepolymer resins with a lower degree of polymerization, which are baked and solidified ...

AI Technical Summary

Problems solved by technology

[0003] The patent number is CN201510396989.7 "A New Type of Low-Temperature Curing Epoxy Powder Coating". It is an important method for general-purpose powder coatings with high curing temperature, narrow application range and high energy consumption. It uses the good compatibility characteristics of bisphenol A epoxy resin and modified crosslinking agent to make the coating have excellent adhesion, It has the advantages of impact resistance, heat and humidity resistance, etc. The filler uses precipitated barium sulfate and active silica powder to make the coating have good acid resistance and alkali resistance, but the powder coating prepared by this invention cannot meet the needs of corrosion, antibacterial and protection fields