Cause analysis of discoloration of epoxy floor paint

The discoloration of epoxy floor paint is as follows

Chemical changes occur when pigments are filled.

Some pigments in epoxy floor paint will undergo chemical changes, lose their inherent coloring power, fade or change color.

Metal powder pigments change color easily.

Metal powder pigments will be corroded by the residual free acid in epoxy coatings during storage, which is easy to turn black or green.

Pigments have different densities.

The densities of several pigments in epoxy multicolor coatings are different. During storage, heavy pigments will gradually sink and light pigments will gradually float.

Poor light resistance

Some pigments in coatings have poor heat resistance and light resistance, and some resins have poor weather resistance and are prone to yellowing when exposed to light, especially epoxy coatings.

Varnish with high acid value is easy to change color.

The varnish with high acid value in epoxy floor paint is easy to react with iron packaging barrel, which reduces the transparency of epoxy varnish and leads to darker color.