Uncured Silicone Rubber Compounds are used by fabricators to convert into cured articles, through typical thermoset methods of compression, transfere, injection, extrusion and calendering.
Here’s what to look for when dealing with uncured silicone so that your projects are finished to the highest quality and safety requirements:
Silicone Compound consists of silicone rubber and other key additives such as heat stabilizers, flame retardants, process aids, color, and catalysts. Proper dispersion of these ingredients is critical in ensuring the highest quality fabricated part for optimal functional performance and proper appearance.
Uncured Silicone compound is available in a variety of colors. When working with uncured silicone, choose the right color for your project. When color matching, it’s important to match the cured material as uncured material may change color after curing.
Various catalyst systems are used in uncured silicone rubber compounds. The fabrication methods determine which catalyst to use. Both Peroxides and Platinum are used and either can be used for extrusion, molding or calendering. Typical shelf life periods are from 90 days to 180 days, depending on the catalyst used. Refrigeration typically helps in extending the shelf life by an additional 50%.
4. Cure Time
Cure time depends on what catalyst and cure temperatures are used, along with the thickness of the fabricated part. Rheological Studies are an effective way to determine the optimal time/temperature combination needed to fabricate a part.
To help facilitate part fabrication, various preforms are available to assist the fabricator in loading their equipment. Performs such as “wig-wag” are used for extrusion, along with “pigs” for injection and sheets or pre cut slabs are also an option. It’s best to consult with your mixer to determine the best performance for your fabrication methods.
Trust ElastaPro for All of Your Uncured Silicone Rubber Needs!
If you’re looking for a high-quality uncured silicone rubber compound, ElastaPro is here to help! Our uncured silicone compound combines the advantages of high-quality silicone rubber with exceptional service and technology. Further, our products are proudly made in the USA and come in various grades, catalysts, durometers, sizes, and colors to meet your needs.
ElastaPro’s specifications grade uncured silicone compound meets industry standards and customer callouts, including 3-A, ASTM, AMS, BMS, DMS, FDA/BgVV, MIL, and MIL-SPEC. We can even provide custom colors to support your larger product designs, with formulations ranging from VMQ and FVMQ to PVMQ and hybrids.
Contact us today to learn more about our uncured silicone compound!