Alkyd resin coatings rely on solvent volatilization and slow oxidation to form a film, and their heat resistance is relatively low. Heat input into these systems accelerates the oxidation of the resin with a corresponding brittleness to the cured coating, reducing flex, and the heat can cause discoloration and thermal decomposition, as well as mechanical fracture of the organic film formers, causing them to scorch and layered.
Alkyd resin coatings can withstand temperatures up to 120°C in a dry environment. Add silicone resin to effectively improve its heat resistance, add heat-resistant anti-rust paint pigment aluminum powder, make alkyd aluminum powder heat-resistant paint, heat resistance can reach 230 ℃.
