PolyShield Enamel

PolyShield – Advanced Polyurethane Anti-Corrosion System

PolyShield is a comprehensive polyurethane-based protection system designed for anti-corrosion applications in the chemical and petrochemical industries for outdoor use. It offers high resistance to UV exposure, ensuring long-term durability in harsh environments.

For maximum efficiency (100% protection), it is essential to use both PolyShield primer and enamel. The solvent-based, two-component polyurethane enamel must be applied as the second protective layer within the system.

✅ Complies with MIL-PRF-4556F standards

1. Application Areas

PolyShield is designed for use in various industries that require optimal adhesion and reliable anti-corrosion protection, including:

🏗 Construction – Protection of steel, aluminum, galvanized metals, and other non-ferrous metals, as well as concrete structures.
🚜 Mechanical Engineering – Coating for industrial machinery and equipment.
🚆 Railway & Industrial Installations – Used in the manufacturing of train cars, structures, and facilities.
🛢 Pipelines & Tanks – Ideal for corrosion protection in pipelines, storage tanks, and cisterns.

 

Chemical Resistance Overview of PolyShield Long-term durability with minimal changes in material properties.
Ammonia solution 25%	Linseed oil	Sulfuric acid < 5%	Hydrochloric acid < 10%
Gasoline	Diesel fuel	JetA1 kerosene	Soap solution
n-Butyl ether	Caustic soda < 50%	Silicone oil	Transmission oil
Cyclohexane	Crude oil	Transformer oil	Diesel oil
Ethanol	Castor oil	Water	Saltwater
Ethylene glycol	Xylene	Glycerin	Adblue

1.1 Durability

Long-term temperature resistance (with color change) from -50°C to 200°C (dry) or up to 80°C (wet). Excellent thermal, mechanical, and chemical resistance.

1.2 Suitable Substrates

Steel, galvanized steel, aluminum, non-ferrous metals, concrete.

2. Technical Guide for Surface Preparation

Surface preparation is a crucial step in coating application, directly affecting the durability and quality of the final product. Following the recommendations in this guide and adhering to industry standards will ensure maximum coating efficiency and reliability.

Surface Requirements

The surface to be coated must meet the following criteria:

• Cleanliness: The surface must be completely free of dust, rust, oil, grease, and other contaminants.
• Condition: Remove all weak, peeling, or loose old coatings. Well-adhered coatings should be thoroughly sanded.
• Moisture: The surface must be dry before applying the coating to prevent defects.
• Preparation: The surface should be prepared for painting according to DIN EN ISO 12944-4 to ensure proper adhesion and extend the coating’s service life.

• Steel Surface Preparation

  Steel surfaces should be prepared using the following methods:

  • Abrasive Blasting: Recommended surface treatment should comply with Sa 2½ grade according to ISO 8501-1:2007. This ensures thorough removal of rust and other contaminants.

  Galvanized Surface Preparation

  • Galvanizing should be performed in accordance with EN ISO 1461 to ensure proper surface preparation for subsequent coatings, particularly duplex systems (a combination of zinc coating and paint coatings).

  Aluminum Surface Preparation

  • Before applying the coating, all contaminants, including dust, oil, and foreign substances, must be thoroughly removed from aluminum surfaces.
  • After cleaning, the surface should be sanded to improve paint adhesion.
  • All preparation work must be carried out in accordance with DIN EN ISO 12944-4 to achieve high-quality results.

3. Technical Data

Technical Data Table (Translated)

Parameter	Value
Coating Colors	White, Gray, Green, Black, or Red-Brown
Coating Gloss	Silk Gloss
Number of Components	Base & Hardener
Mixing Ratio (by weight, kg)	3.1 : 1.0
Density (kg/l)	Base: 1.55 Hardener: 0.94
Viscosity	Base: 40 dPa·s Hardener: 55” (4 mm, DIN 53 211) at (20±2) °C
Pot Life (Workability Time)	8 hours at (20±2) °C and 65% relative humidity
Non-Volatile Content	By volume (%): Base: 62±2, Hardener: 70 By mass (%): Base: 78±4, Hardener: 75
Drying Time to Stage 3 (According to GOST 19007, at 20.0±0.5°C, hours, max)	24
Dry Film Thickness	Up to 300 μm per layer
Theoretical Consumption at 80 μm Dry Layer	200 g/m² (depends on application method, shape, and surface roughness)

4. Application Instructions

Before use, mix the base and hardener in the ratio specified in Section 3. It is recommended to use electric mixing devices to ensure a homogeneous consistency. Avoid air entrapment in the prepared mixture. The minimum mixing time is 3 minutes. If necessary, a thinner can be added afterward.

When planning painting operations, keep in mind that higher temperatures reduce the pot life of the working mixture after component mixing.

The material can be applied both in factory settings and on-site at temperatures ranging from +10°C to +25°C. The temperature of the coated surface must be at least 3°C above the dew point, but not lower than 5°C. The prepared enamel for application must have a temperature of at least +15°C.

The coating dries naturally.

Drying Time Table

Hardener Type	Touch Dry	Recoating Time	Fully Cured	Ready for Use in Aggressive Environments
Standard	8-9 hours	10-14 hours	24 hours	7 days
Fast (Blitz)	4-5 hours	5-6 hours	12 hours	7 days

Application Methods Table

Application Method	Nozzle Diameter	Pressure	Thinner (by weight)
Brush, Roller	At discretion	At discretion	At discretion
Air Spray	1.5 – 2.2 mm	3-5 bar	5-10%
Airless Spray	0.28 – 0.38 mm	150 bar	3-5%

5. Packaging and Storage

PolyShield enamel is supplied as a two-component system, consisting of a base and a hardener, packaged in metal buckets and cans, depending on the weight of the set.

Storage Conditions:

• Must be stored at an ambient temperature between +10°C and +30°C.
• Keep away from heat sources, atmospheric precipitation, and direct sunlight.
• Do not store near open flames or high-temperature surfaces.

Shelf Life:

• 24 months from the date of manufacture, provided storage conditions are met.

6. Safety Precautions

When handling and applying the product, follow all industry regulations and safety standards as indicated on the product label.

• Use Personal Protective Equipment (PPE): safety glasses, masks, and respirators.
• Avoid inhalation of solvent vapors and prevent skin and eye contact with the product and its components.
• Ensure proper ventilation when working indoors.
• The material and its components (base and hardener) are flammable! Keep away from open flames and sparks.