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
>