Lightweight absorbing and insulating coating

Typical uses

• Weight-sensitive metal components
• Acoustic composite structures and lightweight parts
• Areas where absorption and insulation must be assessed together

Technical data

System

Lightweight water-based resin system

Wet density

approx. 0.80 ± 0.05 g/cm³

Dry density

approx. 0.60 ± 0.05 g/cm³

Solids by weight

approx. 70 ± 2%

Colour

brown paste-like liquid

pH

approx. 8–9

Usage per 1 mm dry film

approx. 0.8–1.0 kg/m² (wet); approx. 0.6–0.65 L/m² (dry)

Composite loss factor

0.2 (test standard reference DIN EN ISO 6721-3)

Thickness per pass

up to 5 mm wet in one pass, approx. 4–4.5 mm when dry

Application temperature

not below 15 °C recommended

Drying

at 20 °C, 55% humidity and about 5 mm dry film, full drying takes 12–18 hours; raising to 50 °C takes about 2–4 hours (surface air speed below 5 m/s)

Storage

at least nine months in sealed original packaging; keep dry and cool, protect from frost

Application notes

• Assess as a system with the component structure, thickness, weight target and test method.
• Suitable substrates can include steel with anti-corrosion primer, galvanised steel and anodised aluminium; verify compatibility before use.
• Remove contaminants from the substrate, and confirm adhesion, application and acoustic behaviour on samples.