ISO-PUR® Foam Resin HS400
Rigid foam resin with medium expansion.
ISO-PUR® Foam Resin HS400
ISO-PUR® Foam Resin HS400 is a 2-component rigid foam with a closed-cell structure. The compound is suitable for filling a wide variety of cavities, e.g. refrigerators, cable joints, but also boat hulls, etc. ISO-PUR® Foam Resin HS400 can also be used in the construction sector as a thermal insulation and sealing material. The foaming process is caused exclusively by the chemical reaction between the hardener (polymeric aromatic diisocyanates) and water (a secondary component of the resin component). The formed carbon dioxide produced causes the compound to foam. The system does not contain any harmful blowing agents. ISO-PUR® Foam Resin HS400 is RoHS compliant in accordance with EU Directives 2011/65/EU („RoHS“) and 2015/863/EU („RoHS III“).
Technical data
Resin
Colour
Viscosity (25°C; rot.; 1 s-1)
Viscosity (25°C; rot.; 10 s-1)
Density (23oC)
Flash point
Transparent
Approx. 700 mPas
Approx. 700 mPas
Approx. 1,06 g/cm³
> 200°C
Hardener
Colour
Viscosity (25°C; rot.; 1 s-1)
Viscosity (25°C; rot.; 10 s-1)
Density (23oC)
Flash point
Brown
Approx. 130 mPas
Approx. 120 mPas
Approx. 1,23 g/cm³
> 200°C
Mixture
Mischungsverhältnis Harz : Härter
Colour
1 : 1,2 parts by weight
Beige (other colours on request)
Density (23oC)
Approx. 1,13 g/cm³
Pot life (23°C)
Curing time (23°C)
Approx. 3 min
Approx. 12 min
Mixed viscosity (25°C; rot.; 1 s-1)
Mixed viscosity (25°C; rot.; 10 s-1)
Approx. 250 mPas
Approx. 200 mPas
Cured product
Mixing ratio resin : hardener
under standard curing conditions
1 : 1.2 parts by weight
(14 days 23°C / 50% rel. humidity) unless otherwise stated
Expansion
Foam density
Open-cells
Dielectric strength
Thermal expansion coefficient
Volume resistance
Approx. 400%
Approx. 250 kg/m3
< 10%
Approx. 20 kV/mm
Approx. 6,10×10-6 K-1
Approx. 1,00×1016 Ω×cm
Tracking resistance
Building material class
KA 3a
B2
Storage and transport
Store in a dry and airtight, closed container at 10 – 35°C. Can be stored for at least 12 months in original sealed containers under the above conditions. Short-term deviations during transport and storage are acceptable.
Cleaning
To ensure good adhesion of the cast resin the customer should individually test the suitability of the involved surfaces. Possible pre-treatments like cleaning, activation processes (plasma process) etc. should also be taken into account. The contact surfaces should be free of dirt such as dust, grease or water. For cleaning we recommend ISO-RC® Degreaser for wipe degreasing or ISO-RC® Flux-Off + ISO-RC® Spraywash for spray degreasing (available in 400 ml spray cans).
Processing
Stir the resin container thoroughly. Immediately before pouring the mass, the hardener is added completely to the resin and mixed for 1 – 2 minutes (depending on the batch size and processing time) while stirring slowly. Resin (component A) and hardener (component B) are matched to each other in the correct weight ratio. The mass is then filled into the cavity to be foamed or into the housing, where the foaming process begins after a short time. The ideal processing temperature is 20 – 25°C. Generally, curing is delayed at lower temperatures and accelerated at higher temperatures. If using a double-chamber bag, knead for one minute. Before casting, a homogeneous mass, free of streaks, must be obtained. Pour immediately afterwards and do not scrape the mixing vessel.
Of course, processing can also be carried out from barrels or containers with automatic mixing and dosing systems.
The EC safety data sheet provides information on safety-relevant product properties.
Hardener component (containing diisocyanate): As of August 24, 2023, appropriate training must be provided before industrial or commercial use.