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Requesting thermo-elastic Epoxy/E-glass laminate/prepreg materia

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#72972

Requesting thermo-elastic Epoxy/E-glass laminate/prepreg materia | 29 October, 2014

As stated in the title I would like to know the thermo-elastic material properties, most preferably the E-modulus and CTE in x- and y-direction, for Epoxy/E-glass laminates and/or prepregs for various fibreglass cloth styles.

Datasheets only give rough average estimates, usually for 50% resin count. For the CTE this would be (for Nelco N4000 6FC) be 12-15 ppm/K in x and y. However, the difference between a thin 2 mil laminate with high resin content and 106 Glassfibre cloth this value skyrockets to ~30 ppm/K. For really thick 62 mil laminate with 7xxx glass fibre cloths with low resin content, the CTE drops to around 10,5 ppm/K.

I'm looking for some documentation that has these thermo-elastic values for specific fibreglass cloths (pref. 106, 1080, 2113, 2114, 7628), lam/pp thicknesses, resin or fiber volume content. The type of manufacture does not matter much. A bonus would also be information about C-stage prepregs.

I need this information to calculate PCB warpage by using the classical laminate theory.

Could anyone help me with finding this information?

Kind regards, Julian

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#73008

Requesting thermo-elastic Epoxy/E-glass laminate/prepreg materia | 4 November, 2014

BUMP,

Still looking :)

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