Maybe...., but in the car itself, it will get very hot indeed by the
literal greenhouse effect,
Regards
Mike
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon
Sent: 26 April 2004 14:19
To: [log in to unmask]
Subject: Re: [TN] ABS Plastic Melting Temperature
Hi Robert:
Do a search to find out the temp in the direct sun in
Phoenix Arizona. That will give you the temp in a car trunk In a trunk
the highest temp would be under 60 deg C. The thermal chamber test is
not indicative of reality. That is why in 20 years you have not had any
problems. . The SQA group wants to cover their behinds in case something
happens to a board while is being transported. I would also contact the
ABS plastic box manufacturer. They probably have made tests that could
provide the right info.
Regards,
Ramon
> -----Original Message-----
> From: Croslin, Robert [SMTP:[log in to unmask]]
> Sent: Friday, April 23, 2004 3:08 PM
> To: [log in to unmask]
> Subject: [TN] ABS Plastic Melting Temperature
>
> This is probably a little out of the normal range of questions taken
by the
> Technetters, but here goes. We've been using various boxes made of
ABS
> plastic with fire retardant to enclose our various electronic gadgets.
In
> twenty years, we've never had a problem with any of them cycling back
from
> the field with any kind of thermal related distortion or warp to the
cases
> even though they may sit in a rep's trunk in areas like Phoenix,
Arizona
> under elevated temperatures. Recently, our SQA group bought a new
thermal
> chamber so they can do some environmental testing. They cooked the
units at
> 80*C and the plastic melted. Not surprising, since the softening
point is
> around 72*C. Now, they're asking the engineer to provide some kind of
a
> test specification for them to test to.
>
> We've gone out and bought several specs used by the auto industry, but
they
> just list various ranges and guide you to developing your own spec.
Does
> anyone know of any spec anywhere that would cover plastics used in, or
left
> in the trunk or interior of an automobile?
>
> Thanks in advance,
>
> Bob
>
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 1.8e
> 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 847-509-9700
ext.5315
> -----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
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 847-509-9700
ext.5315
-----------------------------------------------------
:::::::::::::::::::::::::::
This email, its content and any files transmitted with it are intended solely for the addressee(s) and may be legally privileged and/or confidential. If you are not the intended recipient please delete and contact the sender by return and delete the material from any computer. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
Messages sent via this medium may be subject to delays, non-delivery and unauthorized alteration. This email has been prepared using information believed by the author to be reliable and accurate, but Indium Corporation makes no warranty as to accuracy or completeness. In particular, Indium Corporation does not accept responsibility for changes made to this email after it was sent. Any opinions or recommendations expressed herein are solely those of the author. They may be subject to change without notice.
:::::::::::::::::::::::::::
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
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 847-509-9700 ext.5315
-----------------------------------------------------
|
