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February 2002

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Subject:
From:
Rick Thompson <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 14 Feb 2002 13:32:32 -0800
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text/plain (170 lines)
The 2214 is the adhesive recommended by 3M for our application.  Only
problem was long lead time and minimum buys and we weren't sure it would
work.  It's good to get some positive feedback on the product.

Thanks,

Rick Thompson


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bill Christoffel
Sent: Thursday, February 14, 2002 11:04 AM
To: [log in to unmask]
Subject: Re: [TN] Adhesive Recommendations?


In a former life, I had some great results with a 3M material (#2214
structural adhesive)  worked great as passed very rigid (MIL) shock and
vibration testing.

BC

-----Original Message-----
From: Rick Thompson [mailto:[log in to unmask]]
Sent: Thursday, February 14, 2002 12:43 PM
To: [log in to unmask]
Subject: Re: [TN] Adhesive Recommendations?


The 'tearing away' is exactly the problem our customer is concerned with
based on their experience. This thing has to go in a bumper car which
has significant impact shock for may hours a day.  Unfortunately for us,
the design is a modification of an existing product that doesn't see
this environment.  The wire hold downs are a good idea, but we can't use
them is some areas of the board due to the design.

Rick Thompson


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Guy Ramsey
Sent: Wednesday, February 13, 2002 8:02 AM
To: [log in to unmask]
Subject: Re: [TN] Adhesive Recommendations?


I wondered if anyone was going to caution the group on this fact. I have
seen RTV damage the printed circuit right through solder mask.

The other thing I have observed is that it isn't that good at absorbing
shock. If you hit it hard it can simply tear or worse bounce and
actually return energy to the component.

I think in the context originally described in this thread, used in
conjunction with a wire hold down, it may be okay.

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of bbarr
> Sent: Wednesday, February 13, 2002 8:54 AM
> To: [log in to unmask]
> Subject: Re: [TN] Adhesive Recommendations?
>
>
> Use caution if you buy a general purpose RTV at a hardware store. Many

> of those products will be corrosive to electronics. If it smells like
> vinegar when it cures it is no good for electronics. You must use an
> electronic grade of RTV on boards. We use Dow Corning 3145 all the
> time for staking with excellent results. We too transfer it to a
> syringe and use an EFD dispenser.
>
> Bob
>
> =======================
> Robert Barr
> Manufacturing Engineering
> Formation, Inc.
> Voice: 856-234-5020 x3035
> Fax: 856-234-6679
>
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]]On Behalf Of Phil Nutting
> > Sent: Wednesday, February 13, 2002 8:15 AM
> > To: [log in to unmask]
> > Subject: Re: [TN] Adhesive Recommendations?
>
> >
> > For instant gratification there are several clear RTV products
> > available at the local hardware store that are used for general
> > bonding and sealing. Like replacing those tiles in the bathroom that

> > have come loose.
> >
> > It isn't high tech but it has worked for many years.
>
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