DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
Carbon Black as a Heat Stabilizer in Silicone Rubber Vulcanizates.
ARMY WEAPONS COMMAND ROCK ISLAND ILL WEAPONS LAB
Pagination or Media Count:
This work was conducted to develop silicone rubber vulcanizates with improved heat-aging resistance for use in the fabrication of weapon components and accessories. Carbon black of different particle size was added to various types of silicone rubber the resulting compounds were vulcanized with peroxides unaffected by the presence of carbon black. Heat stability was significantly improved by the use of SAF, FEF, FT and MT carbon black fillers in one pphr quantities. The use of small sized particles of carbon black SAF produced silicone vulcanizates that retained upward to 80 percent of the original tensile strength of these vulcanizates after heat aging for seven days at 600 F. A silicone vulcanizate with three pphr ferric oxide in place of carbon black retained upward to 65 percent of the original tensile strength after heat-aging seven days at 600 F. A SILICONE VULCANIZATE WITHOUT A HEAT STABILIZER CRUMBLED TO AN ASHEN RESIDUE AFTER HEAT AGING FOR THREE DAYS AT 600 F. Author, modified-PL
APPROVED FOR PUBLIC RELEASE