jimlux wrote:
Poul-Henning Kamp wrote:
In message <4cf1d64e.2010...@earthlink.net>, jimlux writes:
Poul-Henning Kamp wrote:
We use aerogel for insulation in Mars rovers.. Those little RHUs
don't put out a lot of heat, and you don't have much electronics on
at night.
Do you know if that is in big blocks or in granular form ?
Blocks..
They "cast" it (well.. more like do the reaction which makes the stuff
in a sort of tray... think baking dish), then trim to size.
There's a fair number of "recipes" around to make your own aerogel. I
haven't tried it, but it seems fairly straightforward, and non-exotic.
There are some process controls you need to figure out, but, hey, the
same applies to baking chocolate cakes and cookies.
Making it isnt a problem.
Removing the water from it (result of the "fabrication" technique)
without destroying its mechanical integrity is.
One method is to use supercritical liquid carbon dioxide.
Bruce
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
