We're looking into short run manufacturing of smartphone cases. We'd like to injection mold or cast using 3d printed molds.
What we've looked into so far;
D3o; excellent performance but extremely unattractive business proposition
Sorbothane; poor shock absorption, more geared towards periodic vibration absorption
Aerogels; cost prohibitive
Epoxies; cost prohibitive
A number of other products but it wasn't clear they could be molded.
Many thanks in advance for any hints
Joe