The invention discloses a
phenolic aldehyde epoxy coating with CUI (
corrosion under insulation) resistance. The
phenolic aldehyde epoxy coating comprises a component A and a component B, wherein the component A comprises raw materials in percentage by weight as follows: 20%-30% of
phenolic aldehyde epoxy resin, 16%-19% of a
solvent, 0.5%-0.6% of a thixotropic agent, 0.4%-0.6% of a defoaming agent, 15%-22% of flaky
iron oxide red, 5%-8% of hollow glass microspheres, 27%-34% of barite and 0.5%-1% of a
silane coupling agent; the component B is 100% modified
polyamide resin; before
coating, the component A and the component B are mixed in a weight ratio of A to B being (88-92): (8-12) for use. According to the phenolic
aldehyde epoxy coating with CUI resistance, a high-temperature-resistant film can be combined with flaky
iron oxide red and the hollow glass microspheres, and an acquired coating layer has good high-
temperature resistance, high-temperature
cracking resistance and good long-term
corrosion resistance, and can effectively
resist metal surface corrosion caused by rainwater, mist and
electrolyte ion infiltration under insulation; the phenolic
aldehyde epoxy coating is easy to prepare and simple, facilitates construction and can be widely applied to the fields of
petrochemical industry and thermal pipeline application.