I have several curves related acrylic aging, but you really should
contact Dwayne Mahnke, the Glueru at Rogers. (602) 917-5270.

Yes, the bond strength falls off quite dramatically, along with
flexibility and dynamic flex life.

Andy Magee
Flex Guru - Consulting
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(937) 435-3629

Matthew Sanders wrote,

Hello all,

Thanks to all, by the way, for help on my last delamination problem on
flex
circuits - we think we've licked it. Here's my next question:

I'm wondering about the degradation of performance of acrylic adhesives
with
exposure to temperature. I think I've seen a lot of people mention that
the
adhesive becomes brittle over time at exposure to heat. Does anyone have
any
data they can share? Also, are there other properties that are affected?

Does the bond strength suffer?

Thanks for any info!
Matt Sanders

Matthew Sanders
PCB/Metal Procurement Engineer, Trimble Navigation Ltd.
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Phone: (408) 481-7817
Fax: (408) 481-8590