1- The curing agent for PDMS in the Sylgard 184 Kit typically consists of a mixture of vinyl-terminated polydimethylsiloxane, silica filler, and platinum catalyst. The solid percentage can vary but is usually around 70-75%.
2- For a ratio of 10 parts of PDMS (Polydimethylsiloxane) to 1 part of hardener, the total mixture will be 11 parts. To find the dry solid percentage, you would divide the weight of the PDMS by the total weight of the mixture (PDMS + hardener) and then multiply by 100.
Dry solid percentage = (Weight of PDMS / Total weight of mixture) * 100
Assuming both PDMS and hardener are completely dry solids, the dry solid percentage for this specific ratio would be: