Seawater Resistant Coating

描述

Physical Parameters

• Color: Grey, iron red, blue (specialized seawater corrosion-resistant colors, customizable upon request to facilitate underwater inspection and identification)

• Gloss: Matt / Flat (for underwater sections), Semi-gloss (for coastal exposed sections)

• Standard Film Thickness:

  • Wet Film Thickness (WFT): 190 μm

  • Dry Film Thickness (DFT): 75 μm

• Theoretical Spreading Rate: Approx. 4.7 ㎡/kg

• Flash Point: 43°C

• Density: Approx. 1.38 g/cm³ (after mixing the two components)

Application Instructions

• Mixing Ratio: Base : Curing Agent = 10 : 1 (by weight)

• Pot Life (23°C): 2 hours

• Thinner: Seawater-Resistant Coating Dedicated Thinner (Note: The use of general thinners is strictly prohibited as it will degrade the film’s seawater resistance and adhesion.)

• Cleaning Solvent: Seawater-Resistant Coating Dedicated Thinner. Clean all tools immediately after use to completely remove residual paint, preventing cleanup difficulties and tool blockages caused by product curing.

• Application Methods: Airless Spray, Conventional Air Spray, or Brush/Roller Coating.

Spraying Parameters

Note: Airless and conventional air spray data are for reference only and can be adjusted based on onsite conditions during practical application.

Drying Time & Full Curing Time

Surface Preparation

• The surface of the substrate or intermediate coat must be clean, dry, and completely free of oil stains, corrosion, old paint residue, marine growth, and salts.

• Surface cleanliness should reach Sa2.5 grade (abrasive blasting) or St3 grade (manual/power-tool cleaning). Remove surface salts, dirt, and dust thoroughly using high-pressure fresh water to prevent residual salts from compromising corrosion resistance. Allow the surface to dry completely (moisture content $\le$ 6%) before application.

• When overcoating existing seawater corrosion-resistant paint or epoxy coatings, the old film must be abraded and roughened to eliminate chalked, loose, or peeling areas, ensuring excellent intercoat adhesion and preventing delamination.

Application Conditions

• Temperature & Humidity: The application temperature range is -5 ~ 35°C with a relative humidity (RH) below 85%. The substrate surface temperature must be at least 3°C above the dew point. All measurements of temperature and humidity must be taken close to the substrate in the application area.

• Underwater Operations: For specialized underwater application contexts, the seawater flow velocity must be controlled at $\le$ 1 m/s to ensure normal film formation.

• High-Temperature Constraints: Coating operations are not recommended if the substrate surface temperature exceeds 48°C, avoiding film defects like pinholes, wrinkling, or incomplete curing.

• Adverse Weather: Outdoor application is strictly prohibited during rain, snow, heavy winds, sandstorms, dense fog, high humidity, or immediately before a rainstorm. For underwater applications, avoid periods of high waves and strong swells to ensure construction safety and coating quality.

• Sub-Zero Operations: For applications below 0°C, the substrate surface must be entirely free of ice, snow, or frost, and anti-freezing measures must be taken to guarantee normal film formation.

Coating System Compatibility

• Preceding Coats: SH-E1501 Zinc-Rich Epoxy Primer or SH-E1502 Epoxy MIO Intermediate Paint.

• System Recommendation: For the full immersion zone, pairing with a specialized seawater corrosion-resistant intermediate paint is recommended to enhance protection. For coastal exposed sections, this product can be directly matched as the topcoat. Using these in combination creates a complete, long-term seawater corrosion-resistant system.

Packaging Specifications

• Base (Part A): 20 kg

• Curing Agent (Part B): 2 kg

Storage

• Store this product in a cool, dry, and well-ventilated indoor warehouse, away from open flames and heat sources. Avoid direct sunlight.

• Do not store together with acidic or alkaline substances. The shelf life is 12 months under normal room temperature (5-30°C) conditions.

• The base and curing agent must be stored separately. Once opened, the product should be used as soon as possible; any unused portion must be tightly sealed and stored.

Safety Precautions

• All sources of ignition and smoking are strictly prohibited at the mixing and application sites. Maintain excellent ventilation to reduce paint mist concentration and avoid the inhalation of harmful components (especially in confined spaces or high-altitude environments where ventilation protection must be reinforced).

• Applicators must wear appropriate personal protective equipment (PPE), including protective masks, safety goggles, solvent-resistant gloves, and anti-slip shoes. Safety harnesses are mandatory for high-altitude operations to prevent falls, paint mist inhalation, or eye and skin contact.

• If paint contacts the skin, wash immediately with soap and water or a specialized skin cleanser. If it splashes into the eyes, rinse continuously with plenty of water for at least 15 minutes and seek immediate medical attention.

• Warning signs must be placed around the application area to restrict unauthorized entry. Clean up and collect residual coatings and thinners promptly after construction for centralized disposal to avoid polluting the marine and surrounding environments.

Disclaimer

• The protective performance of any coating largely depends on application factors. Surface preparation and film thickness will directly affect the service life of the coating. Users must ensure compliance with the specified application conditions.

• The data provided in this manual are theoretical values or derived from experimental accumulation. Some data may change due to continuous product improvements without prior notice.

• When our company’s technical personnel are not present at the application site, the company is solely liable for the quality of the coating product itself.