And now with the data of
hot/cold side temperatures for intumescents, I may have to go back to the
stainless/fiberfrax as the preferred combination although I don’t have any
data on that at all.
It may be I have to put
an intumescent coating on top of the stainless/fiberfrax original or under
those. My firewall is glass/plywood/glass so it might not be as scary as
softening honeycomb. Yeah, I think I’ll believe that so I can move forward.
Feel much better now.
Jim
From: Lancair
Mailing List [mailto:lml@lancaironline.net] On Behalf Of mikeeasley
Sent: Friday, December 18, 2009 9:52
AM
To:
lml@lancaironline.net
Subject: [LML] Re: Intumescent firwall
coating
It seems that the firewall blanket
has to serve two purposes, one to keep the fire from penetrating the firewall,
and two to keep the heat from softening the firewall. If I read the
chart correctly, you would start softening the firewall at about 500F in the
engine compartment, since the 3M material cuts the temp in about
half.
In a message dated 12/18/09 08:19:52 Mountain Standard
Time, colyncase@earthlink.net writes:
Here's a document of the sort I
was hoping to find for the intumescent paint.
It shows hot face vs. cold face
temperature.
Based on the original, it seems
to me that is the worry. e.g. the firewall gets soft somewhere
above 250.