Good point.  We usually let them dry overnight at ambient conditions before
baking.  The longer you leave a coating to evolve the solvent gently, the
less chance of bubbles.  We apply it pretty thick and leaving a long
ambient drying time allows us to do it bubble free.


Doug Pauls
Principal Materials and Process Engineer
Rockwell Collins

On Wed, Oct 5, 2016 at 10:18 AM, Wayne Thayer - EXT <[log in to unmask]
> wrote:

> When baking 1-2577 be real careful: If it is cured too quickly (depends on
> thickness) then it will trap lots of solvent bubbles.
>
> From: Douglas Pauls [mailto:[log in to unmask]]
> Sent: Wednesday, October 05, 2016 8:16 AM
> To: TechNet E-Mail Forum; Wayne Thayer - EXT
> Subject: Re: [TN] Silicone Conformal Coating supplier
>
> Dean,
> We use Dow Corning 1-2577 as our approved silicone and it has always
> worked well for us.  It is about 20-30% toluene, so it is a VOC, but if
> memory serves, there are low VOC versions of 1-2577 out there.  While it
> does have a relatively quick tack time, you may want to bake it a while to
> drive the cure reaction and improve adhesion.
>
>
> Doug Pauls
> Principal Materials and Process Engineer
> Rockwell Collins
>
> On Wed, Oct 5, 2016 at 10:08 AM, Wayne Thayer - EXT <
> [log in to unmask]<mailto:[log in to unmask]>> wrote:
> Isn't that stuff about half toluene?
>
> Really--I love 1-2577 too, but won't it cause all of the "VOCs" alarms in
> the county to go off at once?
>
> Wayne Thayer
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]<mailto:[log in to unmask]>] On Behalf
> Of lduso - Diamond-MT.com
> Sent: Wednesday, October 05, 2016 7:54 AM
> To: [log in to unmask]<mailto:[log in to unmask]>
> Subject: Re: [TN] Silicone Conformal Coating supplier
>
> 90% of our customers (DOD & commercial) call out Dow 1-2577. A good all
> around SR that is extremely easy to apply, t/u, rework and has a very quick
> "dry" time of a mere 20 minutes @ room temp. Others are MG Chemicals and
> Humiseal.
>
> Lloyd Duso
> Plant Manager
> Diamond-MT
> (814) 535-3505<tel:%28814%29%20535-3505>
> www.Diamond-mt.com<http://www.Diamond-mt.com>
>
> On Wed, Oct 5, 2016 at 10:48 AM, Stadem, Richard D. <
> [log in to unmask]<mailto:[log in to unmask]>> wrote:
>
> > I have a client who needs to qualify a silicone coating, either an
> > oven cure or UV cure coating. I am looking for a good supplier or
> distributor.
> > If any of you coating experts would care to share your favorites with
> > me, I would greatly appreciate it, as I am not an expert on sources of
> > coatings (best pricing, service, stocking, etc.) Feel free to contact
> > me directly by answering this email.
> > Thanks for any info you feel comfortable sharing.
> > dean
> >
>
>