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™
Optically Clear Polyurethane Encapsulant
Potting Compound
- Non-yellowing
- Excellent long term UV stability
- Scratch and mark resistant
- Very low viscosity
Description
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 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.
Features & Benefits
- Clear, water-white, non-yellowing
- Excellent long term UV stability
- Scratch and mark resistant
- Non-toxic
- Easy to mix and process
- Very low viscosity
- Excellent penetration and air release properties
- Low shrinkage
- Low exotherm
| Specifications | |||
| Resin | Hardener | Mixed | |
| Colour | Clear | Clear | Clear |
| Specific gravity (g/ml) | 1.17 | 1.13 | 1.15 |
| Viscosity m.Pa.s @ 25°C | 600 | 800 | 700 |
| Mix ratio by weight | 1:1 | ||
| Mix ratio by volume | 1:1 | ||
| Curing* | |||
| Pot life | 6-15 minutes | ||
| Gel time | 12-30 minutes | ||
| Tack free cure | 20-120 minutes | ||
| Minimum cure schedule | 24 hours @ 20°C 4 hours @ 40°C 2 hours @ 60°C |
||
| * 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 | A70 | ||
| Operating temperature (application & geometry dependant) | -55 to +120°C | ||
| Thermal conductivity | < 0.25 W/mK | ||
| Tensile strength | ~ 15 mPa | ||
| Elongation at break | 100% | ||
| Compressive yield strength | < 10 mPa | ||
| Coefficient of linear expansion | 100-150 pp/m°C | ||
| Volume resistivity | < 13 Log10ohmm | ||
| Surface resistivity | < 14 Log10ohm | ||
| Electric strength | 20 kV/mm | ||
| Water absorption | 1.17% (30 days @ 25°C) | ||
| Refractive index | 1.47-1.48 | ||
Packaging
Opti-tec 4200 is available in a convenient side-by-side double syringe cartridges,
twinpack sachets and bulk packaging.
| Ordering information | ||
| Part number | Description | |
| OPT4200-50G | Clear Polyurethane Encapsulant - 50 gram double syringe cartridge | |
| IDM805001 | Syringe Gun - for 50g cartridges | |
| OPT4200-200G | Clear Polyurethane Encapsulant - 200 gram double syringe cartridge | |
| OPT4200-250G | Clear Polyurethane Encapsulant - 250 gram twinpack sachet | |
| OPT4200-1KG | Clear Polyurethane Encapsulant - 1 kilogram kit | |
| OPT4200-5KG | Clear Polyurethane Encapsulant - 5 kilogram kit | |
 |
See also! Opti-tec 7020 Optically Clear Silicone Rubber Encapsulant Opti-tec 5020 Optical Epoxy Encapsulant ACC Silicones for LED applications |
 |
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August 2011
Version 1.1
17 Station Field Industrial Estate, Banbury Road
KIDLINGTON, Oxfordshire, OX5 1JD, ENGLAND
Tel: +44 1865 842842 Fax: +44 1865 842172 info@intertronics.co.uk