Aeromarine Epoxies

(Nicholas Cafarelli) wrote in message . com...
Has anyone on the list used Aeromarine brand epoxies?

They are available at http://www.jgreer.com

I seek feedback from users.

Not a user, but I will say that it sort of bothers me that most of the
discount epoxy suppliers don't provide any mechanical properties on
their web sites. Tensile strength, toughness, Young's Modulus, and
glass transition temperature are the minimum I would like to see.

As an example, WEST system is great for it's intended purpose (coating
wood), but it cures to a fairly low stiffness, even though it's
tensile strength looks OK. The same part built with WEST will deflect
at a given load a LOT more than a part with the same glass content
molded with AeroPoxy, or even dime store polyester!

Notice that the Gougeon Brothers have a different system they
advertise for composites...if you are building a composite airplane,
don't use WEST for structural layups, or anything that advertises as
"As Good As WEST".

You pays your money, you takes your chances, but without the
mechanicals, you take MORE chances. More than I care to make.

(Ryan Young) wrote in
om:

(Nicholas Cafarelli) wrote in message
. com...
Has anyone on the list used Aeromarine brand epoxies?

They are available at http://www.jgreer.com

I seek feedback from users.

Not a user, but I will say that it sort of bothers me that most of the
discount epoxy suppliers don't provide any mechanical properties on
their web sites. Tensile strength, toughness, Young's Modulus, and
glass transition temperature are the minimum I would like to see.

As an example, WEST system is great for it's intended purpose (coating
wood), but it cures to a fairly low stiffness, even though it's
tensile strength looks OK. The same part built with WEST will deflect
at a given load a LOT more than a part with the same glass content
molded with AeroPoxy, or even dime store polyester!

Notice that the Gougeon Brothers have a different system they
advertise for composites...if you are building a composite airplane,
don't use WEST for structural layups, or anything that advertises as
"As Good As WEST".

You pays your money, you takes your chances, but without the
mechanicals, you take MORE chances. More than I care to make.


After the post above having to do with heat tollerace, I went to the US
composites website to look for their spec sheet.... no luck.... I am
leaning toward an alum plane anyway.... but I may call them and/or do
some tests if it comes time to make a custome tip or cowl...



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ET


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