Yeah, I remember early on when I was experimenting with my pyroless deployment
device, I was using Nitrile o-rings to seal in high pressure CO2. If the gas
was contained within the chamber for a certain length of time (maybe 10 mins or
whatever it was) I would release the gas and constantly hear a popping sound.
Took me a while to realise the popping sound was the actual o-rings literally
exploding like popping candy from the HP CO2 that permeated the material and
wanted out. Using EPDM o-rings seemed to solve that issue with CO2, but N2O can
be even trickier to achieve comfortably compatibility given its oxidizing
energy content.
Troy
From: arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx>
[mailto:arocket-bounce@xxxxxxxxxxxxx] On Behalf Of anthony@xxxxxxxxxxx ;
<mailto:anthony@xxxxxxxxxxx>
Sent: Friday, 11 January 2019 1:22 PM
To: arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx>
Subject: [AR] Re: New Ablative Material?
N2O has similar solvent properties. Watch those high pressure hoses and seals.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
<http://www.cesaronitech.com/> http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
From: arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx>
<arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx> > On Behalf
Of Edward Wranosky
Sent: Thursday, January 10, 2019 5:30 PM
To: arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx>
Subject: [AR] Re: New Ablative Material?
Yes - like extracting caffeine in coffee beans with CO2. But who would do such
silly things?
Edward
On Thu, Jan 10, 2019 at 3:22 PM Anthony Cesaroni <anthony@xxxxxxxxxxx
<mailto:anthony@xxxxxxxxxxx> > wrote:
It can also be an unexpected solvent with many things even at room
temperature.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx>
<arocket-bounce@xxxxxxxxxxxxx <mailto:arocket-bounce@xxxxxxxxxxxxx> > On Behalf
Of Henry Spencer
Sent: Thursday, January 10, 2019 2:15 PM
To: Arocket List <arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx> >
Subject: [AR] Re: New Ablative Material?
On Wed, 9 Jan 2019, Ed LeBouthillier wrote:
...but the conceptual approach it represented for ablatives in general.
Specifically, using a carbon foam substructure with a CO2-producing
matrix to keep the carbon from oxidizing.
