X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Thu, 09 Nov 2006 10:43:31 -0500 Message-ID: X-Original-Return-Path: Received: from mtai01.charter.net ([209.225.8.181] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1546646 for lml@lancaironline.net; Wed, 08 Nov 2006 23:00:49 -0500 Received-SPF: none receiver=logan.com; client-ip=209.225.8.181; envelope-from=rpharis@teamimc.com Received: from aa08.charter.net ([10.20.200.160]) by mtai04.charter.net (InterMail vM.6.01.06.01 201-2131-130-101-20060113) with ESMTP id <20061109035947.DNIF25903.mtai04.charter.net@aa08.charter.net>; Wed, 8 Nov 2006 22:59:47 -0500 Received: from ws1 ([68.186.52.23]) by aa08.charter.net with SMTP id <20061109035946.KDRH14454.aa08.charter.net@ws1>; Wed, 8 Nov 2006 22:59:46 -0500 From: "Rod Pharis" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] So that ends the White Jeffco 9700 Fuel Tank Sealer Saga X-Original-Date: Wed, 8 Nov 2006 19:57:41 -0800 X-Original-Message-ID: <005e01c703b3$34ac60d0$6501a8c0@ws1> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005F_01C70370.268920D0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1807 In-Reply-To: X-Chzlrs: 0 This is a multi-part message in MIME format. ------=_NextPart_000_005F_01C70370.268920D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit All, At Northrop Grumman, we spent many months and thousands of Navy dollars studying various controlled processes to apply the new mandated low volatile organic compound (low VOC) coatings to achieve optimum adhesion, corrosion resistance and chip resistance etc., which included the observation of inherent yellowing of epoxy coatings. The bottom line of the several inches thick report is; Use clean, virgin grit-blasted metal substrate surfaces, epoxy primer and polyurethane topcoat. The epoxy provides better adhesion, sealing and hardness, but chips easily and yellows. The polyurethane is more color stable and chip resistant with lower adhesion and corrosion resistant. Both respond favorably to elevated booth temperature and short time intervals between coats. They didn't put all that nasty chemical stuff in the original formulations for nothing. MEK, acetone, isocyanates ... all extremely harmful to humans but great for paint! Without as much or with none of that nasty stuff ... very process sensitive at best, and lower to unacceptable results at worst. I vote for flat white epoxy primer, followed soon when only partially cured by semi-gloss or gloss white polyurethane topcoat, over a scuffed substrate, surgically cleaned before scuffing and vacuumed after but not subsequently touched with paper, cloth or fingers. Don't quote me, but a little extra nasty solvent would do wonderful things. However, you might want to have a Democrat apply it for you! Rod Pharis Legacy 40% going on 30 -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net]On Behalf Of Kevin Kossi Sent: Wednesday, November 08, 2006 3:20 PM To: Lancair Mailing List Subject: [LML] Re: So that ends the White Jeffco 9700 Fuel Tank Sealer Saga I asked Michelle from Lancair to call the manufacturer and ask if there was anything that could be done to prevent the yellowing of the white tank sealer and she said they said that "yellowing is just something that happens with white resin and they don't have any ideas of anything that can be done to prevent the yellowing". So that ends the Jeffco White Tank sealer saga. I will be using the PPG epoxy white mixed with 40% clear Jeffco resin. I decided to get an extra long hose for my scuba set up and use that as a respirator. Thanks for everyones input, is was helpful in deciding what to do. Kevin Kossi Legacy 72% New York ------=_NextPart_000_005F_01C70370.268920D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
All,
 
    At Northrop Grumman, we=20 spent many months and thousands of Navy dollars studying various = controlled=20 processes to apply the new mandated low volatile organic compound (low = VOC)=20 coatings to achieve optimum adhesion, corrosion resistance and chip = resistance=20 etc., which included the observation of inherent yellowing of epoxy=20 coatings.  The bottom line of the several inches thick report = is; =20 Use clean, virgin grit-blasted metal substrate surfaces, = epoxy=20 primer and polyurethane topcoat.  The epoxy provides better = adhesion,=20 sealing and hardness, but chips easily and yellows.  The = polyurethane=20 is more color stable and chip resistant with lower adhesion and = corrosion=20 resistant.  Both respond favorably to elevated booth temperature = and short=20 time intervals between coats.  They didn't put all that nasty = chemical=20 stuff in the original formulations for nothing.  MEK, acetone, = isocyanates=20 ... all extremely harmful to humans but great for paint!  = Without as=20 much or with none of that nasty stuff ... very process sensitive at = best, and=20 lower to unacceptable results at worst.
 
    I vote for flat white epoxy primer, followed = soon when=20 only partially cured by semi-gloss or gloss white polyurethane = topcoat, =20 over a scuffed substrate, surgically cleaned before scuffing and = vacuumed=20 after but not subsequently touched with paper, cloth or fingers.  = Don't=20 quote me, but a little extra nasty solvent would do wonderful = things. =20 However, you might want to have a Democrat apply it for = you!
 
Rod=20 Pharis
Legacy
40%=20 going on 30
-----Original Message-----
From: Lancair Mailing = List=20 [mailto:lml@lancaironline.net]On Behalf Of Kevin = Kossi
Sent:=20 Wednesday, November 08, 2006 3:20 PM
To: Lancair Mailing=20 List
Subject: [LML] Re: So that ends the White Jeffco 9700 = Fuel Tank=20 Sealer Saga

I asked Michelle from Lancair to call the = manufacturer=20 and ask if there was anything that could be done to prevent the = yellowing of=20 the white tank sealer and she said they said that = "yellowing is just something that happens = with white=20 resin and they don't have any ideas of anything that can be done to = prevent=20 the yellowing".
So that ends the Jeffco White Tank sealer=20 saga.
I will be using the PPG epoxy white = mixed with=20 40% clear Jeffco resin. I decided to get an extra long hose for my = scuba set=20 up and use that as a respirator.
Thanks for everyones input, is = was helpful=20 in deciding what to do.
Kevin Kossi
Legacy 72%
New=20 York
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