Hi there,

All the tech data is on the EC site.

Thanks, but unfortunately it doesn't contain the properties that I listed above!

The properties you are after don't exist as they haven't been measured by the manufacturer.  They are non-standard and unusual figures to be needed in the composites game from a resin manufacturer so they are unlikely to test for them unless they have a good reason to - eg a special application resin.  It is further compounded by the fact that even if they had figures, they would be meaningless as the resins are designed to be used in a composite and the properties in a composite would be significantly different.

What is your application?? might be able to offer some other advice.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Hi Warren,

If you find that kind of data for other epoxy resins you can use those numbers as an approximation. The difference between different epoxy resins should be small, they are chemically very similar, and many physical properties like heat capacity are surprisingly similar among organic compounds. Well at least they won't differ by an order of magnitude.

Unfortunately in literature data is scarce and conflicting. 

If you are doing this as a uni project and with lab work then find out the testing procedure for each one and get your own data from it making sure the curing is the same as when you make the rebar. (thats what I did when I did mine)

Any manufacturer data will be skewed to give the best results for each property so it may say x, y, z but x will be cured at 80deg for 8hrs, y will be room temp cured and z will be cured at 130deg for 4hrs so they can only be used as a reference to what could be acheivable, not what IS acheivable for one specific cure

No doubt there are established ASTM/DIN/whatever procedures for such testing. And Chris is right, directly comparing manufacturer data is like comparing apples and oranges and assorted citrus fruit, it's best to test stuff like this yourself.

I once worked on a (non-composite) project where I looked at data from the literature and after repeating these measurements I got exactly the same numbers (Yay!) but found out that the authors of the original paper had made a mistake (Ooops?!).
Instead of "Material XXX contains Y% of substance A and Z% of substance B" it was actually the other way round... and all the following papers by others contained the same error, nobody actually checked that one simple measurement but simply copied the data so in fact most of their findings and conclusions were then wrong, too. If it's not too complicated, do it yourself.

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Quick google search got me this:
http://jmshaw.ualberta.ca/en/Publications/~/media/jmshaw/Documents/2007PPEPPDPosterAsimilarityvariableforestimatingtheheatcapacity.pdf



Meaning you can take data from other resins without introducing an error IF they have substantially similar composition. Works for heat capacities.