Thermoset™ UR-312 Urethane Encapsulant Where to Buy
Product Information
LORD Thermoset™ UR-312 urethane encapsulant is a two-component,low modulus system designed for encapsulation of fragile, pressure-sensitive microelectronic components. Thermoset UR-312 encapsulant cures to a soft, flexible gel using either room temperature or heat cure. Thermoset UR-312 encapsulant is formulated for use at different mix ratios to obtain different cured properties.
Shelf Life
Shelf life of each component is six months from date of manufacture when stored at 25°C in original, unopened container. After opening, protect each component from exposure to moisture by using dry nitrogen as an inert cover.
If stored or shipped at cooler temperatures, Thermoset UR-312 hardener may crystallize. If crystals appear, gently warm hardener at 32-46°C to melt crystals before mixing with resin. Limit heating period to less than three hours as excessive heating will cause dimerization.
Features and Benefits
Low Stress – exhibits low shrinkage and stress oncomponents as it cures.
Convenient – offers different properties when used at different mix ratios.
Excellent Adhesion – provides excellent pressure-sensitive adhesion to most substrates.
Environmentally Resistant – provides excellent thermal shock resistance, exhibits exceptional hydrolytic stability.
Broad Temperature Range – can be used on parts and devices that experience operating temperatures from -80°C to +130°C.
Uncured Typical Properties*
|
Mixed Viscosity, cps @ 25°C 100:50 Mix Ratio |
1500 |
| Working Life, min @ 25°C | 20 |
| Cure Time, days @ 25°C | 7 |
Cured Typical Properties*
|
Volume Resistivity, ohm-cm @ 25°C 100:50 Mix Ratio |
1.1 x 1016 |
|
Hardness, Shore OO 100:50 Mix Ratio |
50 |
|
Tensile Strength, MPa (psi) 100:50 Mix Ratio |
0.34 (50) |
|
Elongation at Break, % 100:50 Mix Ratio |
250 |
|
Moisture Absorption, % 168 hr @ 25°C, 100:50 Mix Ratio |
0.29 |
|
Dielectric Constant, @ 25°C 100:50 Mix Ratio |
3.58 |
|
Dissipation Factor, @ 25°C 100:50 Mix Ratio |
0.03 |
*Data is typical and not to be used for specification purposes.
Cure schedule of 16 hours at 25°C plus 2 hours at 100°C.
Literature
| Download | Type | Name | |
|---|---|---|---|
| MSDS (US) | Thermoset UR-312 Resin | |
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| Safety Data Sheet | Thermoset UR-312 Hardener | |
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Product Catalog | Potting & Encapsulation Materials | |
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Technical Data Sheet | Thermoset UR-312 Urethane Encapsulant |