ron.mcgann(at)baesystems.
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 Posted: Sun May 18, 2008 3:25 pm Post subject: Windows installation - epilog |
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For those that may be interested, attached is the data sheet for FE6026 that some have recommended. There is no reference to bonding to plastics (particularly acrylic which is notoriously difficult to bond to) and my very subjective test indicated that the bond strength to acrylic was little better than epoxy/flox.
So my conclusions were as follows ('structural' here is subjective and means that only average force was required to separate the bond. I was really interested in the substrate breaking before the bond) - :
1. Epoxy/flox bond strength to acrylic was not structural
2. FE6026 bond strength to acrylic was not structural
3. Sikaflex requires a 3/16" bed and is not structural (see also the really interesting thread on Sikaflex on the VAF list) (not tested)
4. Silpruf bond strength of ~300psi is not structural (not tested)
5. ScotchWeld 2216 B/A (1100 psi) achieves max peel strength with a 17-25 mil bond line (too bad if you need spacers or have gaps to fill) (not tested)
6. Did not have any Hysol, but from all accounts appears to be structural and an alterante to Weld on
A supply of Weld-on arrived in Australia the day after I ordered the FE6026 and 2216 B/A from Spruce. For the record, I used the Weldon - piece of mind that the windshield is an integral part of the cabin and the bond will not fail if the unimaginable happens. YMMV, but if you depart from the plans, I would encourage you to do your own research/tests. What I did find is that there are some amazing adhesives out there for gluing Aluminium together!!
<<FE6026TDS.pdf>>
Cheers
Ron
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