Fast-Cure Silicones for Long-Term Implants
NuSil’s fast-cure silicones MED2-4420, MED3-4420, and MED4-4420 are uniquely designed to cure rapidly at room or body temperature.
These versatile low consistency elastomers (LCEs) may be considered for use in long-term implantable medical devices as well as for topical use.
MED2-4420, MED3-4420, and MED4-4420 are two-part, platinum catalyzed, addition cure silicone systems. As fast-cure materials, these cure in less
than 24 hours at room temperature. Unlike acetoxy and oxime cure systems, addition cure silicones do not require moisture to cure or release any
byproducts or corrosive leaving groups. The cure profile of MED2-4420, MED3-4420, and MED4-4420 also makes them especially valuable for use in
medical device assembly in which temperature-sensitive components are present.
The rheometry charts below display typical Scorch Time and T90 for these materials at ambient temperature (25ºC) and body temperature (37ºC).