Two-component elastomer polyurethane system hardness 40 Shore A for moulding & casting. For the production of casting moulds for concrete & plaster, prototypes, pre-series & medium-hard components. High tensile strength. Good elongation at break.
PUR rubber Polurea 40 is ideal for moulding models made of concrete, plaster, metal or synthetic resin, for example. For vacuum or atmospheric pressure moulding.
Application
Clean the model to be moulded thoroughly. If necessary, depending on the material of your model, apply a suitable agent to close the pores or a release agent. Carefully measure the two components (resin:hardener in a weight ratio of 100:50 OR in a volume ratio of 100:45). Mix the two components thoroughly until the compound has a homogeneous consistency. Process the finished PUR rubber compound immediately and quickly!
Only mould dry models - if you use a release agent, make sure that it has dried well on the model. Work at a room temperature above 15 °C.
PUR rubber Polurea 40 can be pigmented. Please test in advance whether the pigments are compatible with PUR-Kautschuk Polurea 40.
| Product properties | PUR resin | Hardener |
| Colour | amber | amber |
| Viscosity at 25° C | 2000-3000 mPas | 100-150 mPas |
| Density at 25° C | 0.95-1.05 g/cm³ | 1.05-1.15 g/cm³ |
| Mixing ratio Volume | 100 (ml) | 45 (ml) |
| Mixing ratio Weight | 100 (g) | 50 (g) |
Technical properties
| Pot life (100 ml, 40 mm, 25 °C) | 23-27 minutes |
| Setting time (15 ml, 5 mm, 25 °C) | 45-55 minutes |
| Demoulding time (15 ml, 5 mm, 25 °C) | 15-18 hours |
| Max. recommended material thickness | 50-60 mm |
The PUR system reaches its final properties after 7 days at 25 °C.
Properties after curing
| Colour | amber |
| Density | 0.95-1.05 g/cm³ |
| Hardness Shore A/15 | 38-42 |
| Shrinkage | negligible |
| Elongation at break | > 1000 % |
From 24 August 2023, appropriate training must be provided prior to industrial or commercial use
Polyurethane rubber Polurea 40 COMPONENTS A:
The product is subject to labelling according to GHS/CLP guidelines. Labelling according to Regulation (EC) 1272/2008:
UFI: JMV1-PRTR-G506-K7DH
GHS08
Signal word: DANGER
Contains: m-tolylidene diisocyanate
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.
P261 Avoid breathing dust/ fume/ gas/ mist/ vapour/ aerosol. P284 [In case of inadequate ventilation] Wear respiratory protection. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P342+P311 If respiratory symptoms occur: Call a poison centre, doctor or .... P501 Dispose of contents/container in accordance with applicable regulations.
EUH 204 Contains isocyanates. May cause an allergic reaction.
Polyurethane rubber Polurea 40 COMPONENT B:
The product is subject to labelling according to GHS/CLP directives. Labelling according to Regulation (EC) 1272/2008:
UFI: MHG8-YPA6-R50H-TNV6
GHS09
Signal word: CAUTION
Contains: Dipropylene glycol, dibenzoate
Dietilmetilbenzenediamine
H411 Toxic to aquatic life with long lasting effects
P273 Avoid release to the environment. P391 Take up spillages. P501 Dispose of contents/container in accordance with applicable regulations.
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