184 Silicone Elastomer RTV Silicone Encapsulants

Description of Silicone Encapsulant

10 to 1 silicone encapsulants are supplied as two-part liquid component kits. When liquid components are thoroughly mixed, the mixture cures to a flexible elastomer, which is well suited for the protection of electrical/electronic applications. MC silicone encapsulants cure without exotherm at a constant rate regardless of sectional thickness or degree of confinement.

Applications: General potting applications: power supplies, connectors, sensors, industrial controls, transformers, amplifiers, high voltage resistor packs, relays; adhesive/encapsulant for solar cells; adhesive handling beam lead integrated circuits during processing.

FEATURES & BENEFITS
Flowable
Room temperature and heat cure
Good dielectric properties
Rapid, versatile cure processing controlled by temperature
High transparency allows easy inspection of components

Technical Data

Color: Clear

Components: 2 part

Cure System: Room Temperature/Heat

Cure Time: 45min @ 100 °C

Dielectric Strength: 350 V/mil

Flash Point: 101 °C

Hardness: 48 A

Mix Ratio: 10:1

Service Temperature: -45 to 200 °C

Specific Gravity: 1.03

Thermal Conductivity: 0.27 W/mK

Viscosity: 3,500

Volume Resistivity: 2.9 x 10^14 ohm-cm

Working Time: 1.5h @ room temperature

PREPARING SURFACES
In applications requiring adhesion, priming will be required for many of the silicone encapsulants. For best results, the primer should be applied in a very thin, uniform coating and then wiped off after application. After application, it should be thoroughly cured prior to application of the silicone elastomer. Additional instructions for primer usage can be found in the information sheets specific to the individual primers.

POT LIFE AND CURE RATE
Cure reaction begins with the mixing process. Initially, cure is evidenced by a gradual increase in viscosity, followed by gelation and conversion to a solid elastomer. Pot life is defined as the time required for viscosity to double after base and curing agent are mixed and is highly temperature and application dependent. Please refer to the data table.

USEFUL TEMPERATURE RANGES
For most uses, silicone elastomers should be operational over a temperature range of -45 to 200°C (-49 to 392°F) for long periods of time. However, at both the low and high temperature ends of the spectrum, behavior of the materials and performance in particular

Package: 5kg, 20kg, 200kg per drum