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Rayston PU Al Primer 1k

1 of 7 products in this brand
Rayston PU Al Primer 1k is a single pack, moisture-cure, fast drying polyurethane anticorrosive primer filled with zinc and micaceous iron oxide (MIO). It provides cathodic (galvani) and barrier long term protection of steel surface.

Product Type: 1K (1 component) Coating, Primer, Sealer

Compatible Substrates & Surfaces: Concrete, Metal, Steel

Features: Corrosion Resistant, Good Adhesion, Improved Surface Quality, Matte Finish

Application Method: Brush, Roller, Spray

Chemical Family: Polyurethanes (PU)

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Provides
  • High adhesion, anticorrosive properties and barrier effect due to micaceous aluminum and iron pigments (MIO).

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Cure Method
Recommended Use

Steel and concrete:

  • For structures in categories of atmospheric corrosivity medium, high, very high and extreme (C3, C4, C5 and CX - ISO-12944-2 / 2018).

Non-ferrous metal surfaces:

  • As an adhesive or protective coating.
Compatible Coatings

Depending on operating conditions, the product may be used with different types of paints.

  • One-component polyurethanes cured with the humidity of Rayston (PU 1K).
  • Epoxy 2 components (EP 2K) from Rayston.
  • Polyurethanes two components of Rayston (PU 2K).
Surface Preparation
Surface Type Minimum Recommended
Surface profile Ry5 (30-75 µm) (ISO 8503-1) Ry5 (30-75 µm) (ISO 8503-1)
Steel surfaces St 2 (ISO 8501-1) Sa 2½ (ISO 8501-1)
Surfaces of non-ferrous metals and stainless steel Clean with alkaline solution, rinse with water. (SSPC-SP 1) Light surface roughness ISO8501-2, ISO12944-4
Galvanized surfaces Clean with alkaline solution, rinse with water. (SSPC-SP 1) Light surface roughness ISO8501-2, ISO12944-4

 

Application
  • At temperatures below zero up to -18°C.
  • High relative humidity up to 99%.
  • No dew point restrictions.
  • No restrictions on the maximum repainting time.
  • Minimal surface preparation to St2 grade (ISO 8501-1).
  • As a sealer coat for non-metallic surfaces and galvanized.
  • Do not apply in rain or snow, or if the applied material does not have enough time to be dry to the touch, before it rains or snows.
  • *At relative humidity below 30%, it is recommended to add Rayston Activator.
Thickness & Theoretical Spreading Rate
  Min. Middle Max.
Dry Film Thickness 80 μm 100 μm 120 μm
Wet Film Thickness 120 μm 150 μm 179 μm
Spreading Rate 8.4 m2/l 6.7 m2/l 5.58 m2/l

Note: Practical coverage depends on the application conditions, structure to be painted, roughness of the surface and application method.

Drying Time
Dry Film Thickness 60µ -5°C 0°C 5°C, 85% RH 10°C, 80% RH 25°C, 50% RH 40°C, 50% RH
Dry to touch 3.5 h 3 h 2 h 1 h 45 min 15 min
Dry to handle 6 h 5.5 h 5 h 1.5 h 1 h 35 min
Min. overcoating interval 16 h 14.5 h 14 h 5 h 2.5 h 1.5 h
Full curing 10 d 10 d 8 d 8 d 7 d 5 d

 

Note:

  • There is no maximum overcoating interval.
  • Rayston Activator may shorter drying time of the coating.
  • Dryingand curing time determined at controlled temperatureand relative humidity (RH) 60 - 80%.
  • As the relative humidity of the air decreases, the curing time of the coating increases.
Application Data

Homogenization: It is a single component, before its use, it must be thoroughly homogenized with a low-speed mechanical mixer, avoiding air entrapment. Before opening the boats,
ensure that the temperature of the material is at least 3ºC above the dew point.

Dilution: Addition of thinner is not normally required. If needed Raystonthinner or Raystonthinner CC can be added up to 10% by volume.

Note: In case of not using the recommended thinners, the manufacturer does not responsible for the possible reduction in product quality.

Cleaning: All equipment should be cleaned with Raystonthinner Thinner or Raysstonthinner CC immediately after completion. the job.

Application Method

Spray Application: The airless machine is the main method of application. For other spray methods, viscosity correction may be required.

Brush: Brush application recommended for clipping and review or small repairs.

Roller: Roller application not recommended for primer coat application. The roller could be used to replenish lack of thickness

Properties

Color
Typical Properties
ValueUnitsTest Method / Conditions
Solids (By Volume)65 - 69%-
Density (20°C)1.18 - 1.22g/cm³-
Volatile Organic Contentmax. 280g/l-
Dry Heat Resistance (Prolonged Exposure)145.0°CASTM D2485
Dry Heat Resistance (Short Term Exposure)175.0°CASTM D2485
Impact Resistancemin. 5JASTM 2794
Air Temperature-18 to 55°C-
Surface Temperature-18 to 50°C-
Relative Humidity30 - 99%-
Dew Point (Surface must be Dry to the Touch)No Limitation--

Regulatory & Compliance

Certifications & Compliance

Safety & Health

Safety

Use with adequate ventilation. Do not inhale aerosol. Avoid contact with skin. After contact with skin, wash immediately with detergent, soap and water. In case of contact with eyes, rinse immediately with water and seek medical advice immediately

Packaging & Availability

Packaging
Volume (liters) Size of containers (liters)
10 10

Storage & Handling

Storage & Shelf Life

The product must be stored in original sealed containers. The storage conditions are to keep the containers in a dry, well ventilated space away from source of heat and ignition.

Storage Temperature From 5 to 30°С
Shelf Life 18 months