RE: I cannot see that polyU will outperform Styrofoam in compressive or
tensile strength - maybe the shear capability is the issue?
I question strength being an issue at all, when deciding on what foam to use
I thought that is was just there to be shaped and covered with glass. Is
this a wrong
://canardaviationforum.dmt.net
- Original Message
From: "KRnet"
To: "kr...@mylist.net"
Subject: RE: KR> Foam vs. Foam
List-Post: krnet@list.krnet.org
Date: 24/07/04 20:13
RE: I cannot see that polyU will outperform Styrofoam in compressive or
tensile strength - maybe the
I understand the physical (chemical) differences between Styrofoam
(polystyrene?) and Polyurethane.
I have used Styrofoam in various densities from 2 to 6 lb/cub ft - the
higher density stuff appears to be mechanically as strong (or stronger)
than PolyU when used as a composite core material - is
I actually prefer Divinycell over Last-A-Foam for most applications.
PVC Foam= Divinycell (rigid PVC)
Clark Foam = Last-A-Foam (unicellular polyurethane)
Larry A Capps
Naperville, IL
"You're just jealous because the voices don't talk to you."
-Original Message--
Steve Jacobs wrote:
> I am looking to do Mark L style sandwich wing skins - glass on both
> sides of the skin core. The logistics of shaping the material aside -
> can Styrofoam be used to the same good effect? The theory says that the
> strength of a composite sandwich increases almost exponent
o: "'KRnet'"
Sent: Friday, July 23, 2004 7:33 AM
Subject: RE: KR> Foam vs. Foam
I understand the physical (chemical) differences between Styrofoam
(polystyrene?) and Polyurethane.
I have used Styrofoam in various densities from 2 to 6 lb/cub ft - the
higher density stuff appears
lready have a 43ft X 60ft (13m X 18m)
workshop.
Barry Kruyssen
Cairns, Australia
RAA 19-3873
k...@bigpond.com
http://users.tpg.com.au/barryk/KR2.htm
- Original Message -
From: Larry A Capps
To: 'KRnet'
Sent: Friday, July 23, 2004 10:46 PM
Subject: KR> Fo
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