REFLECTOR: Flox question, (epoxy bonds)

[Laurence Coen]

The chemical bond is called cross-linking. If you do a lay-up over cured 
epoxy there will be no cross-linking which is an absolute no-no.  If you 
sand the cured epoxy or use peel-ply you break some bonds in the cured epoxy 
and they become available for cross-linking to the next lay-up so they are 
chemically bonded.  Done correctly either method will produce a chemical 
bond.

Larry Coen
N136LC (Still in one piece).

--------------------------------------------------
From: "Matt Bucko" <mbuc310 at cox.net>
Sent: Sunday, May 11, 2008 12:12 PM
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Subject: Re: REFLECTOR: Flox question

> Thanks. The chem bond maked sense.
> Matt
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
> Behalf Of Andy Millin
> Sent: Sunday, May 11, 2008 3:34 AM
> To: 'Velocity Aircraft Owners and Builders list'
> Subject: Re: REFLECTOR: Flox question
>
>
> Hey Matt,
>
> Yes, you can do it as you describe.
>
> As you describe it, you will have a Mechanical Bond.  I think that is the
> right term.  Think of it as two pieces that are glued together.
>
> If you did it all in one step, then you will have a Chemical Bond (not 
> sure
> of terminology).  This way you have one piece.  I believe it is stronger
> this way.  I would do it this way.
>
> FWIW,
>
> Andy
>
>
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of Matt Bucko
> Sent: Saturday, May 10, 2008 11:22 PM
> To: Velocity Aircraft Owners and Builders list
> Subject: REFLECTOR: Flox question
>
>
> I am going to put in layup B on the wing/winglet joint. I will be running 
> 2
> beads of flox before I put the lay up on. One bead on each part, outside
> edge.  Any reason I cannot let the flox cure, sand and then apply the 
> glass?
> Or should I apply the glass layup to wet flox, with the foam slurried?
>
> Matt
>
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