mixing solvent with uncured epoxy resin
mixing solvent with uncured epoxy resin
(OP)
I know some of you have a strong background in chemistry.
In our reparation process we are using Epocast 50A two component epoxy resin ( http://korsil.ru/pdf/50A1-946(US).pdf ). The resin has very good laminating properties but is too viscous to inject it with a syringe needle.
May I add a few percents of acetone (solvent) to increase the fluidity (decrease viscosity) of the resin? what would be the maximum (%) allowed? Does acetone may change the epoxy resin polymerization (weaker bonding properties)?
Thanks.
In our reparation process we are using Epocast 50A two component epoxy resin ( http://korsil.ru/pdf/50A1-946(US).pdf ). The resin has very good laminating properties but is too viscous to inject it with a syringe needle.
May I add a few percents of acetone (solvent) to increase the fluidity (decrease viscosity) of the resin? what would be the maximum (%) allowed? Does acetone may change the epoxy resin polymerization (weaker bonding properties)?
Thanks.





RE: mixing solvent with uncured epoxy resin
I would check with Huntsman first, but you may be better off using a reactive dilutant like GLYCIDYL ETHER instead of Acetone. A dilutant in the resin will degrade the properties of the epoxy less than a trapped solvent.
I would have no problem recommending Acetone if it was where the solvent could evaporate before the epoxy had cured. But if you are injecting this you are setting yourself up to have the solvent trapped in the epoxy matrix.
Composite pro would have a better handle on this than me.
B.E.
RE: mixing solvent with uncured epoxy resin
As far as I know any solvent isn't a proper diluent for epoxy, but since an important industrial use for acetone involves its reaction with phenol for the manufacture of bisphenol A, I hope that may works as a thiner for epoxy resin also. For sure the polymerization reaction is affected, the question is how bad?
Any other ideas?
RE: mixing solvent with uncured epoxy resin
Epoxy adhesives are very sensitve to mix ratio or composition changes. Don't do it without knowing what you are doing and test the results. This is all done in the initial development of a formulation.
RE: mixing solvent with uncured epoxy resin
Please try Benzyol Acohol, this is an active diluent