REFLECTOR: Epoxy

To Get some answers on Epoxy I Called Composite Polymer Design The Maker OF Easy Epoxy 83-87

I spoke to the Technical Director and got these answers.

Recrystallize often can happen just from shipment.

To Decrystallize the hardener heat it to 140 -150 Deg F. And then stir

Do not exceed 180 Deg F.

Hardener has a 1 year shelf life Guarantee but should be good for 2-5 years if kept in a sealed

container . IF exposed for more than 2 weeks to out side air Discard. He also said they have had

hardener around for more then 5 years with no ill effects

There is no silver nitrate in the Hardener. The Color change is from moisture getting in to the hardener.

and no heating will return the color. That is why you need to keep the container sealed.

If the hardener turns dark brown that dose not mean that it is nessasaraly bad the way to

tell if it has gone bad is by testing the strength or by watching for extended cure times.

Post cure is at 150 deg for two hours to reach full cure

or full cure is about 1 month witch is why it may darken if the humidity is high and it

was not post cured in that month. But post curing adds no strength.

This is what I was told form the people how make it

Ron N34CV