BFS – Block Foam Systems

The Aptane® BFS product portfolio includes a range of two component block foam systems with densities and mechanical properties designed to suit the requirements of any application. The two main types of block foams are polyurethane (PUR) foam systems and polyisocyanurate (PIR) foam systems.

Aptane®BFS PUR foam products are used to produce pre-cut insulation foams for pipeline sections and joints on pipeline systems in LNG and chemical plants. PUR block foams produced with Aptane® BFS products can be cut to specified shapes and applied as required.

Aptane® BFS PIR foam products are also used to produce pre-cut insulation foams for pipeline sections and joints on pipeline systems in LNG and chemical plants.

However, the Aptane® BFS PIRfoam systems are used to produce products with lower Flame Spread and lower Smoke Developed indices when compared with PUR foam products. The PIR block foams produced with Aptane® BFS products can also be cut to specified shapes and applied as required. All of the Aptane® BFS series products are supplied HCFC free.

Aptane®BFSblock foams meet the stringent specification requirements expected by specifiers and engineers when designing chemical and gas processing plants. Aptane® BFS block foams can be designed to meet the individual requirements of each project. Typical properties of the Aptane® BFS PUR and PIR product range are detailed in the table below.

PROPERTY VALUE AND UNITS STANDARD
Density 45 kg/m³ ASTM D1622
Closed Cell Content >95% ASTM D6226
Compressive Strength @ 23°C >200 kPa ASTM D1621
Compressive Strength@ -165°C >280 kPa ASTM D1621
Tensile Strength @ 23°C >320 kPa ASTM D1623
Tensile Strength @ -165°C >265 kPa ASTM D1623
Tensile Modulus <16 Mpa ASTM D1623
Coefficient of Linear Thermal Expansion @ -165°C to 23°C <70 x 10⁻⁶ K⁻¹ ASTM D696
Thermal Conductivity @ 20°C <0.027 W/m.K ASTM C177
Thermal Conductivity @ -165°C <0.016 W/m.K ASTM C177
Burning Characteristics PUR < 30mm/30s ISO 3582 (BS 4735)
Burning Characteristics PIR < 30mm/30s ISO 3582 (BS 4735)
Leachable Chlorides < 60 ppm ASTM C871
Water Absorption Max 5 volume % ASTM D2842
Water Vapour Transmission <0.8g / (m².h) ASTM E96
CTSR Cryogenic Thermal Stress Resistance > 1.5 CINI 2.7.01 and 2.7.02

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