Return-Path: Received: from envelope.rose-hulman.edu ([137.112.8.21] verified) by logan.com (CommuniGate Pro SMTP 4.2b6) with ESMTP-TLS id 245514 for flyrotary@lancaironline.net; Tue, 06 Jul 2004 22:00:08 -0400 Received: from bob (c-24-8-167-234.client.comcast.net [24.8.167.234]) (authenticated (0 bits)) by envelope.rose-hulman.edu (8.11.6/8.11.6) with ESMTP id i671xX007677 (using TLSv1/SSLv3 with cipher RC4-MD5 (128 bits) verified NO) for ; Tue, 6 Jul 2004 20:59:35 -0500 (EST) From: "Alex Madsen" To: "'Rotary motors in aircraft'" Subject: High Temperature Epoxy Selection Date: Wed, 7 Jul 2004 07:59:20 -0500 Message-ID: <002f01c46422$38f962b0$6401a8c0@bob> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0030_01C463F8.50235AB0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_0030_01C463F8.50235AB0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I have been gathering information on high temperature epoxies for my carbon fiber intake manifold project. I think the two best candidates are EZ-Lam HT http://www.acp-composites.com/acp-ez.htm and Aremco-Bond 526N Epoxy http://www.graphitestore.com/items_list.asp/action/prod/prd_id/49/cat_id /4 . I would appreciate input in selecting the best epoxy for the carbon fiber manifold. The max operating temp of the EZ-lam HT is 450 F and the 526N is 600 F. While temp is important it is not the only factor, cost is also a factor. All material costs will be pasted onto the customer :-) =20 EZ-lam HT Quart $50 Gallon $185 =20 Aremco-Bond 526N Epoxy Pint $90 Quart $160 Gallon $275 =20 The pricing on the 526N Epoxy is not very linear. If someone can find a cheaper source of smaller quantities it would be nice. I have been unsuccessful.=20 =20 =20 Hear are the spec sheets for each: =20 EZ-Lam HT =20 DESCRIPTION:=20 An ultra high temperature laminating system for the construction of laminated composite parts. E-Z LAM HT has excellent wet-out characteristics, facilitating lay-ups involving compound contours. Its long pot life allows for ease of vacuum bagging . The maximum operating temperature for laminated parts manufactured from E-Z LAM HT is 450 Deg. F.=20 MIX RATIO: 100 parts by weight E-Z LAM HT A 33 parts by weight E-Z LAM HT=20 POT LIFE: 150 gr. mass 4 HRS. @ 75 F CURE: ROOM TEMP SET FOLLOWED BY 2 HRS. @ 150 F=20 2 HRS. @ 200 F 2 HRS. @ 250 F 2 HRS. @ 300 F 2 HRS. @ 350 F ALLOW TO COOL IN OVEN PROPERTIES: VISCOSITY, MIXED 5000 CPS DUROMETER D 94 SHORE SPECIFIC GRAVITY 1.19 gm/cc USE TEMP, 400 F FLEXURAL 102,000 PSI COMPRESSION 64,000 PSI TENSILE 57,000 PSI SHELF LIFE: Twelve months when stored in tightly sealed containers at room temperature. =20 =20 Aremco-Bond 526N =20 Ultra high temperature two-part (1:1) epoxy for specialty bonding and potting applications to 600 F. Can be applied to a myriad of substrates, offering exceptional chemical, electrical and mechanical properties. On the picture Aremco-Bond 526N seals connection in down-hole motor assembly. =20 Manufacturer: Aremco Products, Inc. Description: =20 _____ =20 PROPERTY US VALUE METRIC VALUE Mix Ratio by Weight 1:1 resin:hardener =20 =20 Specific Gravity 1.23 gms/cc =20 =20 Mixed Viscosity 8,500 @ 25=B0C, cps =20 =20 Pot Life 2.5 100gm @ 25=B0C, hours =20 =20 Recommended Cure 2/200 + 2/325 hours/=B0F =20 hours/=B0C Alternate Cure 3-4/300 hours/=B0F =20 hours/=B0C Temperature Resistance -76/572 =B0F -60/300 =B0C CTE 18 in/in =B0F =20 Microns/m =B0C Tensile Strength 2800 psi 19.3 mpa Flexural Strength 18000 psi 124.1 mpa Volume Resistivity 4.0 x 10 14=20 ohm-cm @ RT =20 =20 Dielectric Strength 450 volts/mil =20 =20 Dielectric Constant 3.01 1.0 kHz =20 =20 Chemical Resistance Good =20 =20 =20 Color Amber =20 =20 =20 =20 =20 =20 =20 I am leaning towards using the EZ-LAM HT because of its lower cost and it is designed for laminating. However, it would be nice to have the 600F of the 526N. That said, the engine should not get much over 210 F and the manifold can be shielded from high temperature exhaust and turbo.=20 =20 =20 Alex Madsen ------=_NextPart_000_0030_01C463F8.50235AB0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Re: [FlyRotary] Re: Second stock turbo bites the dust

I have been gathering information on high temperature epoxies = for my carbon fiber intake manifold project. I think the two best candidates = are EZ-Lam HT http://www.acp-composit= es.com/acp-ez.htm and Aremco-Bond 526N Epoxy http://www.graphitestore.com/items_list.asp/action/prod/prd_id= /49/cat_id/4 . I would appreciate input in selecting the best epoxy for the carbon = fiber manifold. The max operating temp of the EZ-lam HT is 450 F and the 526N = is 600 F. While temp is important it is not the only factor, cost is also a = factor. All material costs will be pasted onto the customer J<= /span>

=A0

EZ-lam HT

Quart $50

Gallon $185

 

Aremco-Bond 526N = Epoxy

Pint $90

Quart $160

Gallon $275

 

The pricing on the 526N Epoxy is not very linear. If someone can = find a cheaper source of smaller quantities it would be nice. I have been = unsuccessful.

 

 

Hear are the spec sheets for each:

 

EZ-Lam HT

 

DESCRIPTION: =
An ultra high temperature laminating system for the construction of = laminated composite parts. E-Z LAM HT has excellent wet-out characteristics, = facilitating lay-ups involving compound contours. Its long pot life allows for ease = of vacuum bagging . The maximum operating = temperature for laminated parts manufactured from E-Z LAM HT is 450 Deg. F.

MIX RATIO: 100 parts by weight E-Z LAM HT A
33 parts by weight E-Z LAM HT

POT LIFE: 150 gr. mass 4 HRS. @ 75 F

CURE: ROOM TEMP SET
FOLLOWED BY
2 HRS. @ 150 F
2 HRS. @ 200 F
2 HRS. @ 250 F
2 HRS. @ 300 F
2 HRS. @ 350 F
ALLOW TO COOL IN OVEN

PROPERTIES: VISCOSITY, MIXED 5000 CPS
DUROMETER D 94 SHORE
SPECIFIC GRAVITY 1.19 gm/cc
USE TEMP, 400 F
FLEXURAL 102,000 PSI
COMPRESSION 64,000 PSI
TENSILE 57,000 PSI

SHELF LIFE: Twelve months when stored in tightly sealed containers at = room temperature.

 

 

Aremco-Bond 526N

 

Ultra high temperature = two-part (1:1) epoxy for specialty bonding and potting applications to 600 = F. Can be applied to a myriad of substrates, offering exceptional chemical, = electrical and mechanical properties. On the picture Aremco-Bond 526N seals connection in down-hole motor assembly.

 



Manufacturer:

Aremco = Products, Inc.

Description:

 

  PROPERTY

US = VALUE

METRIC = VALUE

  Mix Ratio by Weight<= /b>

1:1

  resi= n:hardener

 

 

  Specific Gravity

1.23

  gms/= cc

 

 

  Mixed Viscosity

8,500

  @ = 25=B0C, cps

 

 

  Pot Life

2.5

  100g= m @ 25=B0C, hours

 

 

  Recommended Cure

2/200 + = 2/325

  hour= s/=B0F

 

  hour= s/=B0C

  Alternate Cure

3-4/300

  hour= s/=B0F

 

  hour= s/=B0C

  Temperature Resistance

=

-76/572

  =B0F=

-60/300

  =B0C=

  CTE

18

  in/i= n =B0F

 

  Micr= ons/m =B0C

  Tensile Strength

2800

  psi<= o:p>

19.3

  mpa<= o:p>

  Flexural Strength

18000

  psi<= o:p>

124.1

  mpa<= o:p>

  Volume Resistivity

4.0 x 10 14 =

  ohm-= cm @ RT

 

 

  Dielectric Strength

450

  volt= s/mil

 

 

  Dielectric Constant

3.01

  1.0 = kHz

 

 

  Chemical Resistance

Good

 

 

 

  Color

Amber

 

 

 




 

 

 

 

I am leaning towards using the EZ-LAM = HT because of its lower cost and it is designed for laminating. However, it = would be nice to have the 600F of the 526N. That said, the engine should not = get much over 210 F and the manifold can be shielded from high temperature = exhaust and turbo.

 

 

Alex Madsen

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