High performance thermoplastic matrix composite processing: dry powder prepregging, plasma treatment, consolidation/crystallization analysis

dc.contributor.authorBucher, Richard A.en
dc.contributor.committeechairLoos, Alfred C.en
dc.contributor.committeememberDavis, Richey M.en
dc.contributor.committeememberReifsnider, Kenneth L.en
dc.contributor.committeememberKander, Ronald C.en
dc.contributor.committeememberWightman, James P.en
dc.contributor.departmentMaterials Engineering Scienceen
dc.date.accessioned2014-03-14T21:19:33Zen
dc.date.adate2005-10-03en
dc.date.available2014-03-14T21:19:33Zen
dc.date.issued1994-12-06en
dc.date.rdate2005-10-03en
dc.date.sdate2005-10-03en
dc.description.abstractThe quest for developing high performance materials, originally responsible for the birth and growth of the composites industry, is now responsible for the drive to produce composites which outperform those used today. A great deal of this interest lies in the use of thermoplastic polymers as the composite matrix. Thermoplastics offer the potential of improved mechanical performance, greater solvent resistance, better impact tolerance, as well as cost saving processing attributes such as infinite shelf life, the ability to be recycled, short processing time and repairability. Unfortunately, these advantages come at the expense of a very high melt viscosity which makes the prepregging process, where the fiber and polymer are combined, very difficult. To overcome this and associated difficulties a detailed analysis of thermoplastic matrix composite processing is developed. The primary area of focus involves the development of an electrostatic dry polymer powder prepregging facility. This unit is capable of the production of high quality towpreg from thermoplastic polymers and reinforcing fibers. Two approaches, statistical and stochastic, were employed to model the process of polymer deposition on the fibers in the prepregging process. These models are used to optimize the production of towpreg. A modification of the prepregging facility allows for the production of towpreg from very small (15 g) samples of polymer. This is extremely useful for analysis and performance verification of state of the art polymer systems.en
dc.description.degreePh. D.en
dc.format.extentxv, 219 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10032005-171423en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10032005-171423/en
dc.identifier.urihttp://hdl.handle.net/10919/39541en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1994.B834.pdfen
dc.relation.isformatofOCLC# 32749850en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1994.B834en
dc.subject.lcshThermoplastic compositesen
dc.titleHigh performance thermoplastic matrix composite processing: dry powder prepregging, plasma treatment, consolidation/crystallization analysisen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineMaterials Engineering Scienceen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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