Effect of a derivatized oxide layer and environment on the bond durability of aluminum/polyimide and titanium/polyimide bonds

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dc.contributor.authorHolmes, Brenda L.en
dc.contributor.committeechairDillard, John G.en
dc.contributor.committeememberWebster, H. F.en
dc.contributor.committeememberWightman, James P.en
dc.contributor.departmentChemistryen
dc.date.accessioned2014-03-14T21:31:39Zen
dc.date.adate2009-03-14en
dc.date.available2014-03-14T21:31:39Zen
dc.date.issued1994-05-05en
dc.date.rdate2009-03-14en
dc.date.sdate2009-03-14en
dc.description.abstractA surface pretreatment for aluminum and titanium involving the reaction of phosphonic acid (RPO(OH)2), R=butyl or vinyl for aluminum and R=vinyl for titanium, has been investigated. The durability of phosphonic acid-pretreated samples was compared with that for P2-etched (ferric sulfate-sulfuric acid) adherends. Samples were bonded with LaRC-IA adhesive in a wedge test geometry. Environmental testing consisted of static and cyclical exposure for 240 hours in three atmospheres: 1) 170°C, 2 torr; 2) -20°C; 3) 60°C, 70% relative humidity. Crack propagation arrested within 48 hours. The order of durability in static environmental tests for aluminum was vinyl phosphonic acid > P2 > butyl phosphonic acid. The durability performance was reversed for cyclic testing. The durability of specimens using P2-etched titanium was superior to that for vinyl phosphonic acid-treated titanium in all environmental tests.en
dc.description.degreeMaster of Scienceen
dc.format.extentxv, 142 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03142009-040506en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03142009-040506/en
dc.identifier.urihttp://hdl.handle.net/10919/41597en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.H656.pdfen
dc.relation.isformatofOCLC# 32161861en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.H656en
dc.subject.lcshAluminum -- Surfacesen
dc.subject.lcshMetal bondingen
dc.subject.lcshTitanium -- Surfacesen
dc.titleEffect of a derivatized oxide layer and environment on the bond durability of aluminum/polyimide and titanium/polyimide bondsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemistryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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