The "dope" used to stiffen the fabric on early airplanes was cellulose
nitrate and highly flammable. Many a WWI aviator chose to jump to his
death sans parachute rather than burn to death in a flaming aircraft.
-P
graywolf wrote:
LOL! Nitrocellulose, AKA, gun cotten is classified as an explosive.
BTW they use it for paint too. Gives a much nicer look than Acrilics
paint does. It is still the preferred finish for guitar and other
instrument sound boards as it give a much mellower sound.
graywolf
http://www.graywolfphoto.com
"Idiot Proof" <==> "Expert Proof"
-----------------------------------
Scott Loveless wrote:
Thanks for the correction, Bob. I actually did a bit of googling,
instead of just recalling from memory, and found that the Cellulose
acetate has an ignition temp of 800F and the Estar base 900F. I'm
assuming the cellulose nitrate ignited at much lower temperatures.
On 11/19/05, Bob Shell <[EMAIL PROTECTED]> wrote:
On Nov 18, 2005, at 10:17 PM, Scott Loveless wrote:
Most likely, it means that the film has an Estar (or whatever Kodak
called it back then) base instead of a celluloid base. The safety
film ignited at a higher temperature than the older celluloid stuff.
Thus - safety film. As far as EI goes, you'll just have to wait for
someone more knowledgeable than me to reply.
Nope. Cellulose acetate was the "Safety Film". It replaced
cellulose nitrate, the stuff that tended to spontaneously combust.
Estar (same as Mylar) was a much later development.
Bob
--
Scott Loveless
http://www.twosixteen.com
--
"You have to hold the button down" -Arnold Newman
