X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 20 Dec 2009 02:36:31 -0500 Message-ID: X-Original-Return-Path: Received: from elasmtp-curtail.atl.sa.earthlink.net ([209.86.89.64] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4027729 for lml@lancaironline.net; Fri, 18 Dec 2009 11:28:44 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.64; envelope-from=panelmaker@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=QCvsbE4V6JEcUHm1UmnbeDXGpIISVIUKJSv6HXOI/CNPxYXRI6EznJ+dWsYkxkPQ; h=Received:From:To:References:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:In-Reply-To:Thread-Index:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [209.173.71.128] (helo=DELL8300) by elasmtp-curtail.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1NLfgW-0001IU-J5 for lml@lancaironline.net; Fri, 18 Dec 2009 11:28:08 -0500 From: "Jim Nordin" X-Original-To: "'Lancair Mailing List'" References: Subject: Intumescent firwall coating X-Original-Date: Fri, 18 Dec 2009 10:28:17 -0600 X-Original-Message-ID: <17D312D25EFA4B25BA6C1C5A094C9BBF@DELL8300> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004F_01CA7FCC.D03CC560" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: Thread-Index: Acp/+ifQ0WFlLfXyRDaoxZrbse26FQAAUzJA X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-ELNK-Trace: bdfc62829fd2a80cc8ad50643b1069f8239a348a220c260984b3406148968d6d35f008ff49678392350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 209.173.71.128 This is a multi-part message in MIME format. ------=_NextPart_000_004F_01CA7FCC.D03CC560 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit 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 Colyn, 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. Mike Easley 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. http://www.3m.com/market/industrial/ceramics/pdfs/hotface_cold%20face.pdf the home page is here: http://www.3m.com/market/industrial/ceramics/materials/fabric_312_aero.html ------=_NextPart_000_004F_01CA7FCC.D03CC560 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

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

Colyn,

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.

Mike Easley

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.

the home page is here:

 

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