TITLE:
Breaking the Adhesive Bond between Dialyll Phthlate, Barco Bond 185 and PBX 9501
AUTHORS:
Matt Jackson, Benton Allen, Trent Kelly, Courtney Waddell, Emily M. Hunt, Stephanie Steelman, Neil Koone
KEYWORDS:
Barco Bond, Bond Dissociation, Cyrogenic Cycling, Dialyll Phthlate, Epoxy Bond, Epoxy Degredation, Epoxy Dissociation, Thermal Cycling, PBX 9501, Plastic Bonded Explosive, Thermal Cycling
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.3 No.7,
July
16,
2015
ABSTRACT: Use of epoxy as an adhesive
is a common practice. The most common applications are permanent sealants.
Epoxies have a wide range of operating temperatures, and are very resistance to
adhesive failure. When a need to remove this adhesive arises, it is not always
easily accomplished especially if the part has excessive adhesive. To maintain
fidelity of the parts attached by epoxy, a project evaluating several methods
of epoxy removal was conducted. Methods evaluated included low wavelength,
near-ultraviolet radiation, solvent dissolution, and thermal cycling. The UV method
failed to demonstrate a repeatable dissociation. The solvent study did result
in dissociation of bonds, but introduced chemicals that could make subsequent
chemical analysis of parts suspect. Thermal cycling showed a high repeatability
for dissociation of bonds and may prove to be relatively inexpensive to
implement.