Epoxy Zinc (Strontium) Yellow Primer

Composition A two-component amine-cured epoxy resin paint with zinc (strontium) chromate as the main anti-rust pigment.

Main Features·Excellent adhesion on colored alloys such as aluminum

·Good compatibility with topcoats

·Excellent water resistance, oil resistance, and anti-rust performance

Application Suitable for aluminum alloys and other alloy surfaces of aircraft main structures to protect them from corrosion.

Technical Specifications Drying time (25℃)             Surface dry    ≤ 2h

Hard dry ≤24h

Flexibility (mm) ≤ 2

Impact strength (cm) ≥ 50

Adhesion (grade) ≤2

Hardness (double pendulum) ≥0.4

Application Parameters Components: Part A and Part B

Mixing ratio (by weight) 25∶4

Mixing method: Stir Part A thoroughly, add Part B, and continue stirring until uniform.

Coating thickness (typical values) Wet film thickness: 70 μm

Dry film thickness: 30 μm

Theoretical spreading rate: 8m²/ kg (average/smooth surface, excluding loss)

Flash point: 27℃

Induction time (20℃)             30min

Pot life (20℃)             8h

Recoat interval (20℃) Minimum               24 h

Maximum: 7d

Compatible topcoats Epoxy, chlorinated rubber, polyurethane topcoats, etc.

Surface preparation Remove oil stains, mechanically grind to remove oxide scales and other impurities.