X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 18 Dec 2009 10:52:27 -0500 Message-ID: X-Original-Return-Path: Received: from imr-mb02.mx.aol.com ([64.12.207.163] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4027666 for lml@lancaironline.net; Fri, 18 Dec 2009 10:49:54 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.207.163; envelope-from=MikeEasley@aol.com Received: from imo-da02.mx.aol.com (imo-da02.mx.aol.com [205.188.169.200]) by imr-mb02.mx.aol.com (8.14.1/8.14.1) with ESMTP id nBIFnFaq023502 for ; Fri, 18 Dec 2009 10:49:15 -0500 Received: from MikeEasley@aol.com by imo-da02.mx.aol.com (mail_out_v42.5.) id q.c10.71505bb3 (37080) for ; Fri, 18 Dec 2009 10:49:12 -0500 (EST) Received: from MikeNotebook (c-75-71-55-189.hsd1.co.comcast.net [75.71.55.189]) by cia-db06.mx.aol.com (v127.6) with ESMTP id MAILCIADB062-90d84b2ba4762eb; Fri, 18 Dec 2009 10:49:11 -0500 X-Original-Date: Fri, 18 Dec 2009 08:49:28 -0700 From: mikeeasley Subject: Re: [LML] Re: Intumescent firwall coating X-Original-To: "Lancair Mailing List" In-Reply-To: X-Original-Message-ID: <3b22d509.cd23.4bcf.9477.bf1fe144d280@aol.com> References: X-Mailer: Nexus Desktop Client 3.1.20.1 MIME-Version: 1.0 Content-Type: MULTIPART/alternative; BOUNDARY=6a7735f7-abdb-442d-87c4-5b22d3ed585c Content-Transfer-Encoding: 8bit X-AOL-IP: 75.71.55.189 X-Spam-Flag:NO X-AOL-SENDER: MikeEasley@aol.com --6a7735f7-abdb-442d-87c4-5b22d3ed585c Content-Type: TEXT/plain; charset=us-ascii 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 --6a7735f7-abdb-442d-87c4-5b22d3ed585c Content-Type: TEXT/html; charset=utf-8 Content-Transfer-Encoding: 8BIT
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:
 
 
--6a7735f7-abdb-442d-87c4-5b22d3ed585c--