A kind of primer powder coating resistant to marine climate and preparation method thereof

Abstract

The invention discloses a marine climate-resistant primer powder coating and a preparation method thereof. The primer powder coating has excellent adhesion to the polyurethane-fluorocarbon composite powder coating, and can be used as the primer powder coating of the polyurethane-fluorocarbon composite powder coating for substrate protection in marine climate environments. At the same time, the primer powder The coating itself also has good coating appearance, good adhesion to the substrate, low curing temperature, excellent corrosion resistance, heat and humidity resistance and salt spray resistance, etc. It is used in conjunction with polyurethane-fluorocarbon composite powder coatings, especially Suitable for harsh marine climates.

Description

technical field [0001] The invention relates to the field of powder coatings, in particular to a marine climate-resistant primer powder coating and a preparation method thereof. Background technique [0002] Transformers, electric boxes and other instruments and ships exposed to the marine environment for a long time will be affected by the marine climate, and the hot and humid air of salt spray will accelerate the corrosion of the metal structures or insulating materials in the instruments and equipment or ships, reducing or damaging their reliability. Studies have shown that: in the hot and salty marine climate environment, the service life of instruments and equipment can only reach 1 / 5 to 1 / 10 of the expected life. Frequent replacement and maintenance will cause serious economic losses and also cause safety hazards. [0003] Instruments and equipment working in a sea environment with high salt fog and high humidity, although the coating on the surface of ships can prolon...

AI Technical Summary

Problems solved by technology

[0002] Transformers, electric boxes and other instruments and ships exposed to the marine environment for a long time will be affected by the marine climate, and the hot and humid air of salt spray will accelerate the corrosion of the metal structures or insulating materials in the instruments and equipment or ships, reducing or damaging their reliability. Studies have shown that: in the hot and salty marine climate environment, the service life of instruments and equipment can only reach 1 / 5 to 1 / 10 of the expected life. Frequent replacement and maintenance will cause serious economic losses and also cause safety hazards.

[0003] Instruments and equipment working in a sea environment with high salt fog and high humidity, although the coating on the surface of ships can prolong their service life or slow down their damage to a certain extent, but in high temperature, high humidity, high radiation, high salt fog In typical marine climates, ordinary weather-resistant powder coatings are prone to molting and coating shedding. CN107974183A discloses polyurethane-fluorocarbon composite powder coatings suitable for hot and humid marine climates. Although it has super weather resistance, acid and alkali resistance Excellent properties such as heavy salt and high humidity resistance, especially suitable for hot and humid marine climate environment, but in fact, its heat and humidity resistance and water resistance performance need to be further improved in practical applications

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