Visit: http://69.239.32.181/Jeffco/Hardener...ustomers2_html

and you'll see that each hardener is formulated for a specific use and
nominal cure time. You'll also notice the chemistry of hardeners is
not uniform, noting for example the various "main ingredients" that
comprise these many selections:

Amidoamine
Aliphatic mannich
Modified polyamine
Modified aliphatic amine
Novel modified cycloaliphatic
Modified polyamide/polyamine
etc...

'What's going on' is apparently an extensive ammount of research to
find a combination of chemistry that perform specific tasks.

BTW, I've used the Jeffco products (almost) exclusively in hand
laminating my project (their 1310-L6 / 3138) in either 50 or 5 gallon
increments and am happy with the performance / price. Yes, I do live
in a BIG city, but they do sell direct to "non-annoying'' novices. (By
this I mean they are *not* West or System 3 with a big "customer care"
department willing to guide the uninitiated through the process).

MW
Los Angeles

wrote:
Visit: http://69.239.32.181/Jeffco/Hardener...ustomers2_html

and you'll see that each hardener is formulated for a specific use and
nominal cure time. You'll also notice the chemistry of hardeners is
not uniform, noting for example the various "main ingredients" that
comprise these many selections:

Amidoamine
Aliphatic mannich
Modified polyamine
Modified aliphatic amine
Novel modified cycloaliphatic
Modified polyamide/polyamine
etc...

'What's going on' is apparently an extensive ammount of research to
find a combination of chemistry that perform specific tasks.

BTW, I've used the Jeffco products (almost) exclusively in hand
laminating my project (their 1310-L6 / 3138) in either 50 or 5 gallon
increments and am happy with the performance / price. Yes, I do live
in a BIG city, but they do sell direct to "non-annoying'' novices. (By
this I mean they are *not* West or System 3 with a big "customer care"
department willing to guide the uninitiated through the process).

MW
Los Angeles


Mike,

I'm using 1310-L6 with 3155/3154 hardeners. What's 3138
like and typical pot life? I note that the elongation to
failure is only 3.0%, which is pretty low for an epoxy.

Evan Gatehouse

Howdy Evan:

As with all epoxies, the pot life varies dramatically with
temperature... But, during a nice 80 degree day, it's about 50- 60
minutes. I chose this combination due to the fairly low mixed
viscosity of about 450 cps, which gives a nice wet-out to all of the
glass / kevlar I've used to date. Note that the elongation % of
concern is that of the 'system', as opposed to just the hardner. See
for example:

http://69.239.32.181/Jeffco/Systems/...y=1314with3138

which is Jeffco's 1314 resin with the same 3138 hardner. The
elongation of the 'system' with a moderate post-cure is 5.5%, which
compares most favorably to Gougeon's Pro-Set 125/229 at 4.5%.

There used to be a similar 'system' page for the 1310-L6 / 3138
combination, but it looks like they've moved on.

MW