Cryogenic adhesive
Cryogenic adhesive
(OP)
I am searching for a tried and tested adhesive to be used at 77K (and eventually 4.2K). The adherends are optical windows with titanium mounts. The joint should be vacuum leak tight between 77K and 300K (continually cycled).
We currently use a 2 part epoxy mix, Eccobond, which does not provide a consistent leak tight joint, approx 30% failure.
Has anyone had any experience with adhesives at low temperatures?
Many thanks in advance
We currently use a 2 part epoxy mix, Eccobond, which does not provide a consistent leak tight joint, approx 30% failure.
Has anyone had any experience with adhesives at low temperatures?
Many thanks in advance





RE: Cryogenic adhesive
A Google search for "cryogenic adhesive" revealed a lot including this link to a cryogenic adhesive expert!
http:
RE: Cryogenic adhesive
Good luck with your search
Regards
eng-tips, by professional engineers for professional engineers
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RE: Cryogenic adhesive
my research so far (cryogenics journals) has suggested a silicone based adhesive as it may be more forgiving during the cool down.
I have also found the following and will run a few trials:
h
RE: Cryogenic adhesive
this is similar to if not the same as adhesives used to mount cyrogenic temperature detectors
we use same for bonding glass to aluminum to about -80C in an aerospae application
silicone materials ( eg GE rtv566 or similar Nusil CC2566 ) remain compliant to about -120 C and then get much harder ( per nasa report of about 1976)
FEP teflon seals with mechanical loading have been demonstrated to work for superfluid helium
(see RSI sept 1972)
RE: Cryogenic adhesive
Armstrong A-12 epoxy is used in many cryogenic applications including liquid helium dewars.
Try a google search on "armstrong a-12" and "cryogenic" or "dewars"
HTH
RE: Cryogenic adhesive
Vendor 1
http://w
2850FT BLACK 18 LB. GALLON Epoxy STYCAST® 2850 FT STYCAST 2850 FT is a two component, thermally conductive, epoxy encapsulant; it has a low coefficient of thermal expansion, excellent electrical insulative properties; cures with Catalyst 9, or Catalyst 23LV. 18 lb Gallon. $157.86
Vendor 2
Pro-Pac Corporation
160 Meister Avenue
Branchburg, NJ 08876
Telephone: 908-725-5000
ht
(3) lbs for $107.40
Vendor 3
http://www.janis.com/p-aae9.html
EP/STYCAST Stycast 2850FT
(6) 10 g packets for $170
Vendor 4
Lakeshore
Lakeshore.com
$188 for (20) 2 g packets