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Again my experience here is over ten years old so take it for what its worth, and it relates to resin infusion and prepreg mixes in mixed fibre laminates, mostly tension stuff as structural composites usually are. The exact opposite of E/G property wise unfortunately. The basic rules to the base materials still apply though.
Also to be honest, dilutants, nano this, filler that are all irrelevant in the bigger picture for Epoxy as an engineering material. If you can get a low cps epoxy formulation then the first challenge is still to get the stuff to perform as per datasheet first. Once that's there it's almost trivial to work out the sections required.
As an end user with a non bleeding edge application I'd be hesitant to expect to be able to modify the mix without a lot of tangible effort and moreover simply don't see the need.
I disagree with your theory on nanoparticles but defend to the death your right to say it. I don't mind the effort or the expense in in figuring out how to optimize this, I've already got about $200 in books relating to my work on this topic and haven't even started buy resin. My goal here is to learn as much as I can about this topic and disseminate it as it increases the knowledge I have available to apply to other problems and hopefully will help the abstract goal of making more machine tools available to the masses.