NuSil™ CF19-2615

• Two-part, optically clear, solvent free, low viscosity silicone
• Cures at room temperature or rapidly with heat
• Offers good physical and electrical stability across a broad range of temperatures
• Convenient 1:1 Mix ratio

• To provide protection of electronic components and assemblies against shock, vibration, moisture, ozone, dust, chemicals and other environmental hazards by potting or encapsulating
• For photonics applications such as HBLEDs, photo detectors, lasers, discrete optics and flat panel displays that require a 1.41 refractive index

Mixing

Mix in a 1:1 ratio Part A to Part B, taking care to minimize air entrapment during mixing.

Substrate Considerations

Cures in contact with most materials common to electronic assemblies. Exceptions include butyl and chlorinated rubbers, some RTV silicones and unreacted residues of some curing agents. Units being encapsulated or potted should be clean and free of surface contaminants. Containers and dispensers being used should also be clean and dry. Cure inhibition can usually be prevented by washing all containers with cleaning solvent or volatilizing the contaminants by heating. Note: Some bonding applications may require the use of a primer. NuSil Technology CF1-135 silicone primer is recommended.

Vacuum Deaeration

Remove air entrapped during mixing by common vacuum deaeration procedure, observing all applicable safety precautions. Slowly apply vacuum, up to 28 inches Hg, to a container rated for use and of volume at least four times that of material being deaerated. Hold vacuum until presence of air is no longer evident.

Adjustable Cure

Schedule Product cures at room temperature and a wide range of elevated temperatures and cure times to accommodate different production needs. Contact NuSil Technology for details.