I am looking to use an epoxy that is cost effective, good for vacuum impregnation of Rocks & Minerals, has high refractive index and high bond strength.
Best combination for hardness, transparency and flexibility: test Olin's DER 353 Bisphenol A and F resin combination, and cure with Evonik amines like Ancamine 2850 and Ancamine 2739 to govern speed of reaction.