Jon and Frank. The spheres I have are rated to 250psi with 100%
survival.
I am thinking that with out the binder and microspheres they should
do the job.
The abrasion is a thought but they are tough little buggers, can't
imagine that being
a concern.
I can picture even pressure around each sphere except for it's
buoyancy, and those
below it.
Dean
In a message dated 4/23/2010 2:47:19 P.M. Central Daylight Time,
jonw@psubs.org writes:
Dean,
I believe the purpose of the microspheres is to take
up space between
the macrospheres for the purpose of limiting the amount
of binder and
thereby increasing the buoyancy. According to Cliff's
slides
http://www.psubs.org/design/PDF/SyntacticFoam.pdf he got a density
of
25.9 using a combination of micro and macro spheres. If you use
only
macrospheres, your density will go up due to the additional binder
weight and of course the potential buoyancy will be
reduced.
Jon
Recon1st@aol.com wrote:
> *I am
building some floatation using syntactic foam.*
> **
> *I am
wondering why a container with just the maxispherse in it, do
> the
job.*
> *Naturally the container would be free flooding and draining and
be
> strong enough*
> *to support the floatation.*
> **
> *With the ability to add or subtract the spheres I gain flexibility
> something I really like.*
> *Any one got any thoughts on
this?*
> **
>
*Dean*
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