REPROCELL 500
The Alternative To Timber
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Product Description
REPROCELL 500 is a dual component, MDI based system
which when dispensed through suitable machinery will produce
rigid polyurethane foam with typical core density in the range of
500 – 650 kg / m³. Reprocell foam systems are free from CFC’s
or HCFC’s and comply with present and forthcoming
environmental requirements of Kyoto Protocol.
Uses & Applications
REPROCELL 500 has been designed to produce high density
foam which can be moulded to simulate wood for a variety of
applications. The cured foam has a tough skin and will
accommodate screws and nails, and can be stained using the
recognised wood stains, paints or varnishes.
In external applications such as porch furniture, the foam needs
to be protected against ultra violet degradation by painting.
REPROCELL combines low weight with long-term stability and
extremely low water absorption characteristics. It does not decay
or rot and is not susceptible to attack by termites or other wood
boring insects. Isothane technical personnel are available to
advise on specialist processes and surface treatments as
required.
Equipment
REPROCELL systems can be processed through all standard
foam dispense equipment. Refer to Isothane technical staff for a
specific recommendation. The machine should be capable of
maintaining the mix ratio at ± 2% accuracy and controlling the
component temperatures at 25 - 45oC (variable).
Component Description
REPROCELL RESINS are fully formulated liquid mixtures. They should be stored in sealed
tanks or drums and ideally should be heated to 20 + 5ºC before use.
REPROCELL ISO is a liquid mixture containing crude diphenylmethanediisocyanate. It
should be stored in sealed tanks or drums and ideally should be heated to 20 + 5ºC before
use.
Stored under the above conditions the system has a shelf life of 6 months. See below for
component properties.
| Laboratory test results (typical):- |
| Cream time |
40 seconds |
| Rise time |
80 seconds |
| Free rise density |
500 kg/m³ |
Typical Properties
| |
Reprocell Resin |
Reprocell ISO |
| |
| Appearance |
Resinous liquid |
Dark brown liquid |
| Viscosity |
1500 - 4000 cps @ 20° C |
150 - 270 cps @ 25° C |
| Specific Gravity |
1.05 - 1.10 @ 20° C |
1.24 ± 0.02 |
| Mixing Ratio |
45 parts by wt. |
55 parts by wt. |
| |
| Process |
Moulding |
|
| |
| TYPICAL PROPERTIES OF FOAM CORE |
VALUE |
TEST METHOD |
| Core density |
500 kg / m³ |
BS 4370 |
| Compressive strength Parallel to rise |
11.7 Mpa |
BS 4370 |
| Shear Tensile strength Perpendicular to |
11 Mpa |
BS 4370 |
| rise |
|
|
| Close Cell Content |
90 % min |
BS 4370 |
| Thermal Conductivity 20° C Mean |
~0.045 W/mK |
ASTM D2856 |
| Water Absorption |
0.05 Kg/m² |
|
| Dimensional Stabilities |
|
|
| 24 HRS @ 100°C |
-0.03 -0.05% |
|
| 24 HRS @ -15°C |
-0.01 -0.02% |
|
| 24 HRS @ 70°C |
+0.50 -0.55% |
|
Storage, Handling And Personal Protection
The recommendations in our Safety Data Sheet for this
product must be followed at all times. More general
information is included in our publication “A Guide
to the Safe Handling of Polyurethane Resins” and the
following Technical Data Sheets which are available
on request: -
- Fire Safety when storing, Handling and Installing
Polyurethane Foam.
- Decontamination of Isocyanates using Isothane Decontaminant.
|
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