Alan

But it's so obvious... but, then, so are many of the things we are
confronted with :-(

Brian

Alan Brewin wrote:
>
> Hallelujah!
>
> Nobody believes me when I tell them this Brian! We have seem this time and
> again with customers specifying a silicone because they want a 'more
> waterproof' coating. They always end up using so much more material to get
> the same performance.
>
> Alan Brewin.
> Concoat Ltd.
>
> -----Original Message-----
> From: Brian Ellis <[log in to unmask]>
> To: [log in to unmask] <[log in to unmask]>
> Date: 21 May 2000 10:26
> Subject: Re: [TN] Silicone Confromal Coating
>
> >Ken
> >
> >Just remember that silicone coatings are generally 2-10 times faster in
> >passing osmotic humidity for a given thickness than acrylic (best),
> >epoxy or polurethane, so the final protection against vesication is
> >considerably inferior, especially if it is a type that does not require
> >a special (aggressive) primer to ensure adhesion. Many think that,
> >because silicone coatings are water-repellent, they are also
> >moisture-repellent. Nothing is farther from the truth.
> >
> >Brian
> >
> >Ken Bloomquist wrote:
> >>
> >> Hi TechNet,
> >>
> >> We have a customer that wants us to spray Silicone confromal coating on
> >> their boards. We currently spray polyurethane and acrylic.
> >>
> >> My question is: Is there any problem adding Silicone to our process? What
> >> art the things we need to consider in adding this process?
> >>
> >> Thanks,
> >>
> >> Ken Bloomquist
> >>
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> >--
> >Brian Ellis
> >Protonique SA
> >PO Box 78
> >CH-1032 Romanel-sur-Lausanne, Switzerland
> >Voice: +41 21-648 23 34 Fax: +41 21-648 24 11
> >E-mail: [log in to unmask]
> >URL: Technical and consultancy divisions:
> >       http://www.protonique.com
> >     Web services division:
> >       http://www.protonique.com/webserv
> >
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--
Brian Ellis
Protonique SA
PO Box 78
CH-1032 Romanel-sur-Lausanne, Switzerland
Voice: +41 21-648 23 34 Fax: +41 21-648 24 11
E-mail: [log in to unmask]
URL: Technical and consultancy divisions:
       http://www.protonique.com
     Web services division:
       http://www.protonique.com/webserv

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