Low grade substrate treatment heavy duty epoxy primer

Abstract

The invention provides high-anticorrosion epoxy undercoat for low-level substrate treatment, which comprises a mixture consisting of primer coat, a curing agent and a dilution agent, wherein the weight ratio of the primer coat to the curing agent to the dilution agent is 6.8:1:1. Rusted and wet low-level substrate treatment steel materials can be coated with the high-anticorrosion epoxy undercoat provided by the invention; the problem of rusting caused by residual rust or rust returning is effectively solved; the difficulty of corrosion, caused by residual water, to a coating layer is effectively solved; the anticorrosion construction under the condition of solving the difficulty is simple and feasible; the long-acting anticorrosion service life of a coated film can be easily guaranteed.

Description

technical field [0001] The invention relates to a heavy anticorrosion paint technology. Specifically, it relates to a low-grade substrate treatment heavy-duty epoxy primer and a preparation method thereof. Background technique [0002] For conventional anti-corrosion coatings and heavy-duty anti-corrosion coatings, the surface treatment quality of the steel structure base is the key factor determining the quality of the coating. Therefore, in order to ensure the quality and long-term anti-corrosion life of the coating film, the steel substrate must be pretreated before coating, and the treatment must reach GB / T8923 standard Sa2.5. In general, in many environments, the steel structure substrate adopts manual derusting, high-pressure water derusting and wet spraying derusting processes. The steel surface cannot meet the requirements of GB / T8923 standard Sa2.5, and can only be achieved by sandblasting. However, in actual engineering, due to the structure of equipment componen...

AI Technical Summary

Problems solved by technology

In general, in many environments, the steel structure substrate adopts manual rust removal, high-pressure water rust removal and wet spray rust removal processes. The steel surface cannot meet the requirements of GB / T8923 standard Sa2.5, and can only be achieved by sandblasting.

However, in actual engineering, due to the structure of equipment components and the limitation of construction environment conditions, it is inconvenient to remove rust by sandblasting, and it cannot meet the standard requirements. This leaves hidden dangers, and rust will occur soon after coating

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