SynChem – Resins & Varnishes Damival® 13682AN90/13481 2K- Polyurethane resin
Damival®13682AN90/13481 is a very flexible black 2-component resin on base of polyurethane.
Damival® 13682AN90/13481 is an alternative for silicone- and epoxy resins for potting and casting as well as coating for electronic assemblies and a self-levelling potting adhesive for batteries.
Damival® 13682AN90/13481 can be cured at room temperature and has the following properties:
- Usable and flexible resin, even at low temperatures of -60 °C
- For railway applications: EN45545-2HL 3
- MDI-free hardener and free of CRM substances
- Flame retardent UL94-V0
- Thermal resistance up to 150 °C
- High thermal conductivity
The properties depend on the curing stage of object.
Standards
- ELV 2000/53/CE regulations
- Halogen free acc. IEC 61249-2-21 and IPC 4101B
- Thermal class B (130 °C)
- UL 94-V0
Delivery forms
The resin is available in 25 kg cans and 250 kg drums (one way).
The hardener is available in 5 and 20 kg cans (one way).
Storage
The resin should be stored in cool and dry places. Storage life of resin and hardener at max. 25 °C ambient temperature is 12 months.
Hardening
Curing at room temperature or accelarated at higher temperatures.
Processing
The resin must be stirred prior to use, as it contains fillers which may settle during storage. Avoid air introduction during stirring.
Polyurethane resin and hardner are sensitive to moisture during the processing steps (storage, mixing, casting). The parts to be casted should be dry and clean. A preheating of the parts and/or of the resin may improve the encapsulation. A vacuum processing enhances the dielectric and mechanical properties.
Mixing can be done by machine or manually. Easy check of the quality mix thanks to the colored hardener. The gel time and the curing time depend on the mixed volume, the temperature and the thickness of the layer. Final properties are depending on the curing level.
Mixing ratio:
100:9 weight-%
100:13 vol.-%
Technical data
| Property | Unit of measure | Conditions | Values | Test method |
|---|---|---|---|---|
| Shore-A-hardness | after 2 months | 46 | ISO 868 | |
| Elongation at break | % | 53 | ISO 527 | |
| Water absorption | % | 24h, 25 °C | 0.3 | ISO 62 |
| Property | Unit of measure | Conditions | Values | Test method |
|---|---|---|---|---|
| Glass transition temperature | °C | -60 | TMA | |
| Linear expansion coefficient | µm/m/°C | 146 | TMA | |
| Thermal conductivity | W/mK | 0.95 | DIN EN-821-2 | |
| Thermal shock resistance | °C | -60/+150 |
| Property | Unit of measure | Values | Test method |
|---|---|---|---|
| Dielectric strength | kV/mm | 20 | IEC 60243-1 |
| Specific volume resistance at 23 °C | Ω*cm | 8 x 10^10 | IEC 60093 |
| Dielectric constant ε at 50 Hz, 23 °C | 6 | IEC 60250 |
| Property | Unit of measure | Conditions | Values component A | Values component B | Values Mixture | Test method |
|---|---|---|---|---|---|---|
| Mixing ratio | weight-% | weight-% | 100:9 | |||
| Viscosity | mPas | 25 °C | 7,000-11,000 | 250-350 | 5,000 | Brookfield ISO 2555 |
| Viscosity | mPas | 60 °C | 1,000 | Brookfield ISO 2555 | ||
| Mixture density | g/cm³ | 23 °C | 1.63 | 1.10 | 1.58 | |
| Gel time at 25 °C | min | 300 g | 30-50 | TECAM | ||
| Pot lilfe | min | RT ascending to 60 °C | 10.5 |