Sheila

I have listed below properties values of PTRALUX flexible composites.  The numbers should be considered as numbers for setting specifications.  The values represent all products (coverlay, bond ply, sheet adhesive, and clads) after cure.  The clads have Cu removed.

Youngs Modulus	

Cured adhesive only             85000 psi               6E4 kPa
Coverlay, bond ply, clad                150000-30000 psi        1E6-2E6

Poisons Ratio	

Adhesive only                   200-300%
Coverlay, bond ply, clad                50

I hope this helps.

Best Regards,

David Jandzinski
Substrate Product Engineer
Abpac, Inc


-----Original Message-----
From:   Sheila Smith [SMTP:[log in to unmask]]
Sent:   Wednesday, November 18, 1998 8:56 AM
To:     [log in to unmask]
Subject:        [TN] modulus & Poisson's ratio

Help!!  Can anyone provide me with the modulus (Young's) & Poisson's ratio for typical polyimide board material?  IPC 4104/40, /41, and/or /42??????  Thanks in advance>

S. Smith, Tracor Aerospace

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