E47 Marine Inorganic Zinc Silicate Shop Primer

E47 Marine Inorganic Zinc Silicate Shop Primer

Product Introduction:

E47 is a two-pack, zinc-pigmented ethyl silicate-based shop primer, specifically engineered for the temporary protection of steel plates during storage, fabrication, and construction. It delivers excellent long-term weathering resistance, effectively preventing flash rust and corrosion even under harsh marine environments. The coating offers superior welding and cutting performance—it produces minimal weld porosity and does not interfere with subsequent fabrication processes. With a low VOC content of less than 645 g/L and low health hazard characteristics, it meets modern environmental and safety standards. This primer forms a hard, matt, inorganic film that is compatible with most subsequent coating systems, making it an ideal choice for newbuilding projects where steel plates require reliable protection from the moment of blasting until final assembly.

This two-pack product is supplied with a mix ratio of 1:1 by volume (2.3:1 by mass). It dries to a matt finish with a volume solids content of 30% ± 2%. For application, airless spray is recommended using a tip size of 0.38–0.53 mm and an output pressure of ≥15 MPa; air spray is also suitable with a tip size of 1.5–2.0 mm and pressure ≥0.4 MPa. Brush or roller application is limited to small touch-up areas only. Thinning is not recommended for routine use—if absolutely necessary, X-107 may be added at a maximum of 5% by volume; X-107 is also used as the equipment cleaner. No induction period is required. For storage, keep the product in a cool, dry, well-ventilated area, protected from sunlight, heat, and open flames, with containers tightly sealed. Shelf life is 12 months minimum for Part A and 6 months minimum for Part B at 25°C (subject to re-inspection thereafter). Packaging: Part A is supplied as 20.5 kg / 10 L in a 20 L container; Part B is 8.9 kg / 10 L in a 10 L container. Flash point: >14°C for Part A, Part B, and mixed paint.

Intended Uses:

*As a shop primer for protecting steel plates prior to fabrication.

*Provides long-term weathering protection.

*Exhibits good welding and cutting performance.

*Low toxicity for safer handling.

Film Thickness & Theoretical Coverage:

Drying & Overcoating Data：

Surface Preparation:

All surfaces must be cleaned with high-pressure fresh water or fresh water wash, followed by solvent cleaning per SSPC-SP1 to remove all oil, grease, soluble contaminants, and other foreign matter. Steel surfaces should be prepared to Sa2.5 (GB/T 8923.1-2011) using automatic blasting/spraying equipment. A suitable abrasive mixture—typically steel grit (0.6–1.0 mm particle size) combined with steel shot (0.6–1.4 mm particle size)—is recommended to achieve appropriate surface roughness. E47 must be applied promptly after blasting, before any oxidation occurs on the steel surface. If oxidation has already developed, the affected area must be re-blasted to the same Sa2.5 standard.

Application Limitations:

*Do not apply when relative humidity is below 50%, as curing will be significantly retarded.

*E47 is not recommended for use as a touch-up primer after fabrication.

*Avoid prolonged inhalation of solvent vapors and paint mist. Prevent skin and eye contact. Ensure adequate ventilation and take fire-prevention measures during application.