In a message dated 03/10/2000 3:06:29 PM Central Standard Time,
[log in to unmask] writes:
<< Hello again fellow techies,
I have a customer requesting materials which meet MIL-A-81236. The
application
is for the fillet bead at the rigid to flex interface on a rigid-flex PWB.
The
compliant material is "...a two part thermosetting adhesive containing a base
material of the epoxy resin type and a polyamide curing agent." All of the
current adhesives we use in-house are of the two part thermosetting
epoxy/amine
type. This includes Emerson and Cummings Eccobond 45, Stycast, Scotchweld,
and a
few others that slip my mind. While digging through our internal part number
catalogue I came across a material called "Poly-Freeze P119" which apparently
meets this spec.. The problem is that I cannot find this material anywhere.
Has
anyone out there heard of this material, or know of any material that meets
MIL-A-81236??
Thanks in advance.
Brian Guidi
Product Engineer
Teledyne Electronic Technologies >>
Hi Brian!
Check out these two web sites...they came up when I typed in MIL-A-81236 in
my search engine. They're both adhesive companies that make a wide range of
materials, they may be able to help you out. Abatron lists one epoxy called
Epotron-5 that has a MIL-A-81236 spec in the description, I pasted it below.
Hope this helps!
-Steve Gregory-
http://www.magnapoxy.com/
http://www.abatron.com/
EPOTRON-5:
The All-Purpose Clear Liquid Epoxy AN EPOXY STANDARD. 2-part liquid
structural, dielectric, high- strength "never-wrong" resin for casting,
bonding, coating.
Most forgiving. Bond, cast, coat, resurface, pot, encapsulate, protect,
repair; neat or combined with fillers, fibers, fiberglass or other
reinforcements.
100% solids.Clear. 2/1 or 1/1 ratios.
Potlife: 1-2 hrs. Hard in 2-12 hrs.
Industrial, marine and electric uses. Honey-like visc. MIL-A-81236 (WP).
Clean and dry surfaces. Mix resin/hardener thoroughly. Pour or spread in any
thickness. Excellent for potting/encapsulating.
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