Rigid polyprene 10Msp

Polyprene 10Msp is a rigid dual blown system based on expansion of the polyurethane by partly carbon dioxide from the water/isocyanate reaction and partly a new generation auxiliary blowing agent spumagen (ODP=0, GWP=0), which is delivered separately.
Polyprene 10Msp is designed for various discontinuous applications, such as: moulded semi-cylindrical panels (so called ‘half-shells’) for pipings insulation.

Typical Component Properties

Units A-10Msp Polyol Spumagen B – Polymeric MDI
OH number mg KOH/g 345 - -
H2O content % 2.2 - -
NCO content % - - 30 – 32
Viscosity, 25°C cps 1600 - 200
Specific Gravity, 25°C g/cm3 1.17 0.97 1.23

Recommended Process Conditions

Spumagen used as a blowing agent must be premixed in polyol component before processing in amount of 6.3% by weight. This mixture must be worked out during one shift.

Units Values
A-10Msp Polyol (including spumagen) pbw 100
B – Polymeric MDI pbw 120
Polyol temperature °C 19 – 21
Iso temperature °C 20 – 24
Typical moulds temperature °C 30 – 40
Demoulding time °C 10 – 15

Typical Reaction Characteristics

Units Hand-mix*
Ratio Polyol /Iso 100:120
Cream time s 22
Gel time s 65
Rise time s 100
Free rise density kg/m3 35

*Data referred to laboratory tests made with Isocyanate component at 20°C and Polyol component at 20°C, hand-mixed with mechanical stirrer at 3000 rpm. Reported values vary depending on processing conditions.

Handling and Storage

The Iso component must be stored in liquid state. In case of crystallization it has to be melted heating the drum at 60-70°C for no more than 24 hours.

Units A-10Msp Polyol Spumagen B – Polymeric MDI
Storage temperature °C 15 - 25 <20 15 - 25
Shelf life months 6 6 6

Typical Polymer Properties

These items are provided as general information only.

Units Typical value
Overall density range kg/m3 50 – 70
Closed cell content % ≥90
Compressive strength (10%) MPa ≥0.2
Size stability (24 h aging):
- at +130°C		 % ≤2
Thermal conductivity W/mK ≤0.027
Water absorption (24 h) kg/m2 ≤0.2

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