[PSUBS-MAILIST] syntactic foam.

[hank pronk via Personal_Submersibles]

Thanks' Cliff,I was not sure how tough they are, pity though.  Hank 

    On Saturday, June 10, 2017 11:59 AM, Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
 

 Not a good idea to use the macro and micro spheres that are normally used for syntactic foam without a binder such as polyester or epoxy resin that has been catalized. These little spheres are light and strong when subjected to uniform exterior loading which happen if you cast them in a container with a catalized resin.  Without the resin you would get a lot of breakage.  See http://www.psubs.org/design/PDF/SyntacticFoam.pdf   for an overview of syntactic foam.
Cliff
On Sat, Jun 10, 2017 at 12:38 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

I have an idea, but not sure if it will work.  My idea is to fill a neutrally buoyant container with macro and micro spheres.  After the container is as full as possible, then fill with an environmentally friendly oil.  This would be more buoyant than using a resin and less complicated and cheaper.  My concern is, how well will the spheres stand up against breaking from being in contact with the other spheres and the container.   Are these spheres delicate?  Hank
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