About Opti-tec 4200 Optically Clear Polyurethane Encapsulant & Potting Compound
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Opti-tec™ 4200 is a clear, water-white polyurethane resin designed for the encapsulation of electronics, LEDs, electrical products and other items where high transparency and aesthetics are important. Opti-tec 4200 optically clear potting compound has excellent non-yellowing colour stability, due to the incorporation of both UV resistant base materials and the addition of UV stabilisers and antioxidants.
Opti-tec 4200 is used for a range of applications from high value LED panels to decorative giftware (e.g. flower impregnation). It is also an excellent resin for the doming of badges, labels and decals.
Opti-tec 4200 is available in a translucent milky-white version (Opti-tec 4220).
Specifications
Typical properties | Mixed | Resin | Hardener |
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Colour | Clear | Clear | Clear |
Specific gravity (g/ml) | 1.11 | 1.06 | 1.16 |
Viscosity mPa.s @ 25°C | 600 | 600 | 600 |
Mix ratio by weight | 0.92:1 | ||
Mix ratio by volume | 1:1 | ||
Curing* | |||
Pot life | 10 minutes | ||
Gel time | 20 minutes | ||
Tack free cure | 40 minutes | ||
Minimum cure schedule | 36 hours @ 20-25°C 4 hours @ 40°C 2 hours @ 60°C |
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* typical values – will vary according to mass, film thickness and application. Higher cure temperatures will result in greater cure shrinkage and exotherm. | |||
Cured properties | |||
Shore hardness | A75 | ||
Operating temperature (application & geometry dependent) | -55 to +120°C | ||
Thermal conductivity | < 0.21 W/mK | ||
Tensile strength | ~ 15 mPa | ||
Elongation at break | 100% | ||
Coefficient of linear expansion | 100-150 pp/m°C | ||
Volume resistivity | < 1.3 x 1012 ohm.cm | ||
Surface resistivity | < 1.4 x 1012 ohm | ||
Dielectric strength | 20 kV/mm | ||
Water absorption | 1.17% (30 days @ 25°C) | ||
Refractive index | 1.47-1.48 | ||
Opti-tec 4200 is RoHS compliant and contains 0% REACH SVHC |
Safety Data Sheets |
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For the latest SDS for this product, please e-mail msds@intertronics.co.uk |
As of 24 August 2023, adequate training is required before industrial or professional use of this product.