TECHNET Archives

July 2008

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Phil Nutting <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Phil Nutting <[log in to unmask]>
Date:
Tue, 22 Jul 2008 12:24:52 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (58 lines)
Brian,

From the manufacturer's MSDS for their recommended immersion cleaner:

SECTION 2: COMPOSITION/INFORMATION ON INGREDIENTS
Chemical Name CAS No. Wt. % Range
3-methoxy-3-methyl Butanol 56539-66-3 25.0-75.0
Dipropylene glycol methyl ether 34590-94-8 25.0-75.0
N-Methyl pyrrolidone 872-50-4 5.0-25.0
2-Butoxy ethanol 111-76-2 0.1-10.0

Phil

-----Original Message-----
From: Brian Ellis [mailto:[log in to unmask]]
Sent: Tuesday, July 22, 2008 12:00 PM
To: TechNet E-Mail Forum; Phil Nutting
Subject: Re: [TN] Washing dirty conformally coated boards

I would remove the coating with a mild solvent, such as a HCFC/HFC/HFE
blend, preferably in a vapour phase machine and recoat.

Brian

Phil Nutting wrote:
> Good morning,
>
> We have some circuit boards that we coat with Chemtronics Konform AR, that when returned from the field need to be washed to remove the graphite/carbon and brass dust (it won't blow off). Washing and rinsing at temperature tends to peel the conformal coating off. The currently process is hand washing and rinsing, but it is a totally uncontrolled process.
>
> I'm looking for recommendations for a more controlled process that is less likely to remove the coating. I just want to get the dusty stuff off the board. It looks I'm going to have to create a machine or controlled process the works at room temperature.
>
> Phil
>
> Note: All the information contained in this e-mail and its attachments is proprietary to Kaiser Systems, Inc. and it may not be reproduced without the prior written permission of sender. If you have received this email in error, please immediately return it to sender and delete the copy you received.
>
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 15.0
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at: http://listserv.ipc.org/archives
> Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
> -----------------------------------------------------
>

Note: All the information contained in this e-mail and its attachments is proprietary to Kaiser Systems, Inc. and it may not be reproduced without the prior written permission of sender. If you have received this email in error, please immediately return it to sender and delete the copy you received.

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------

ATOM RSS1 RSS2