I can certainly see that potential in the presence of reactive metals and
similar reactive compounds of low electronegativity but for "oxygen" inertness,
I would have thought that more fluorine concentration is your friend?
Troy
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On
Behalf Of Anthony Cesaroni
Sent: Monday, 7 November 2016 11:48 AM
To: arocket@xxxxxxxxxxxxx
Subject: {Spam?} [AR] Re: SpaceX failure update
Not so fast. Although some fluoropolymer based compounds offer very good
performance under cryogenic conditions, they can contain up to 60% or more
of fluorine by weight. Regardless of how tightly it's tied up in terms of
equilibrium, if it decides to leap to freedom, it can be quite spectacular and
energetic, hence its use as a binder in HEs and other energetic materials.
There
have been many industrial accidents in this regard. I have a couple of patents
on energetic materials that incorporate forms of it and have also worked with
it in cryogenic composites. The SpaceX surprise is just another example of
"what could possibly happen" and fluorine based materials are no exception or
reason to be complacent.
Anthony
Sent from my iPhone
On Nov 6, 2016, at 4:51 PM, Troy Prideaux <troy@xxxxxxxxxxxxxxxxxxxxx>
wrote:
previously?Randall -
So the "glass-fluoropolymer composite" that Doug refers to here is
the same stuff as the mysterious "nonburnite" that you've mentioned
methods!
From the little I know about the practical characteristics of
fluoropolymers, it sounds like making anything like a "classical"
fabric-and-binder composite structure with them must take some unusual
methods would be difficult/dangerous/onerous.
The methods could be unusual, but that by itself doesn't necessarily imply
the
which there are quite a few), then what's stopping you from melting some of
To me, if you can get fluoroplastics that are meltable and extrudable (of
the fluoroplastic into the fibre? Then you lay up in a conventional method,
autoclave (probably at high temperatures than traditional) and voilà.
Or if you were laying up mat - layer or fibre mat, layer (or 2 or 3) offluoropolymer film, layer or fibre mat ... etc autoclave and voilà.
Troy
