About IRS 3071 Polyurethane Potting Compound, Flame Retardant Encapsulating Compound
IRS 3071 is a polyurethane potting compound. It is semi-rigid, room temperature curing, flame retardant and thermally conductive. Specifically designed for the cost effective encapsulation of a variety of low to medium voltage electrical and electronic applications, the system offers medium viscosity, flame retardant to UL94 V-0 at 6mm and excellent adhesion to a wide range of substrates. IRS 3071 is resistant to UV, water based cleaning chemicals, motor oil, lubricants and most dilute acids and alkalis.
Features & Benefits
- Flame retardant to UL94 V-0 at 6mm
- Excellent adhesion
- Thermally conductive
- RoHS & WEEE compliant
- Long pot life
- Cured at room temperature or with heat
|Specific gravity (g/ml)||1.72||1.24||1.65|
|Viscosity m.Pa.s @ 25°C||19 000||200||6 000|
|Mix ratio||8.4:1 (weight)
|Pot life||20 minutes (150g @ 25°C)|
|Gel time||40 minutes (150g @ 25°C)|
|Cure schedule||Minimum cure:
24 hrs @ 20°C
4 hrs @ 60°C
2 hrs @ 80°C
|Operating temperature range||-40 to +125°C|
|Flammability||UL94 V-0 @ 6mm|
|Shrinkage||0.5% by volume|
|Thermal conductivity||0.75 W/mK|
|Coefficient of linear expansion||60-80 ppm/°C|
|Volume resistivity||1210 ohm-cm|
|Surface resistivity||12- 14 Log10 ohm|
|Dielectric strength||16 kV/mm|
|Relative permittivity||3.2 @ 50KHz|
|Water absorption||0.54% (after 30 days @ 25°C)|
|Elongation at break||~ 30%|
|Comparative tracking index||> 600|
|Glass transition temperature (Tg)||-10°C|
See how IRS 3071 works as part of a real application in this Potting Compound Case Study:
|Potting compound goes under the sledge hammer at Tough Tracker
A flame retardant polyurethane potting compound enabled the protection of electronics and a resistance to high impact shock and extreme conditions.
IRS 3071 is available in twinpacks or in bulk.
The twinpack sachet is a clear film sachet, with the resin and hardener separated by a removable clip and rail divider. Click here for twinpack mixing instructions.
In kit form, resin and hardener are provided in separate containers to the correct ratio. In most cases pour the hardener into the larger resin container and use it as a mixing vessel. Stir well using appropriate mixer until homogeneous.
|IRS3071-500G||Polyurethane potting compound – 500 gram twinpack|
|IRS3071-1KG||Polyurethane potting compound – 1000 gram twinpack|
|IRS3071-5KG||Bulk kit – 5kg|
|IRS3071-25KG||Bulk kit – 25kg|
For optimal results, store away from strong oxidising agents, strong acids, water, alcohols and amines. Store in a cool, well-ventilated area. Keep container tightly closed. Keep in original packaging.
- Last updated: September 2019
- Version: 4.4
Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.