Feasibility study of thermoplastic nanocomposite for ESD applications using additive manufacturing

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dc.contributor.advisorTate, Jitendra S.
dc.contributor.advisorAsiabanpour, Bahram
dc.contributor.authorNavale, Sagar Vijay
dc.contributor.committeeMemberJimenez, Jesus
dc.date.accessioned2021-01-13T14:56:55Z
dc.date.available2021-01-13T14:56:55Z
dc.date.issued2018-12
dc.description.abstractNanocomposite materials are the multiphase solid materials where one of the phases has one, two or three dimensions less than 100 nanometers (nm). Nanocomposite materials play a vital role in a wide range of applications in aerospace, automotive, sports, and biomedical industry because of their adaptability to different situations and desirable properties. The major goal of this study is to produce and characterize polyamide 6/nanographene platelets (NGP) nanocomposites that have improved electrical resistivity for electrostatic charge dissipation applications with minimal reduction in mechanical properties. Polyamide 6 and nanographene platelets were melt blended using industry size co-rotating twin-screw extrusion. Tension and electrical resistivity test samples for neat PA6, PA6/NGP with 3wt. %, 5wt. % and 7wt. % loadings were produced using fused deposition modeling (FDM) on commercially available open source 3D printer. Electrical resistivity was measured using Keithley Megohmmeter Instrument. Mechanical characterization includes tensile test of the samples. The recommended electrical resistivity range of nanocomposite material system for the ESD applications is 10(6) – 10(12) Ω-cm. Stress release annealing helped in improving both mechanical and electrical properties of the material system. Mechanical test results of neat PA6 and 7 wt % loading of NGP into PA6 showed improved properties while annealed 3 and 5 wt % loading showed droppage. % elongation of 7 wt % Pa6/NGP dropped after annealing, as recrystallization takes place in annealing and increases the ductility of the material. Electrical resistivity was improved by annealing and all nanomodified PA6 material system showed resistivity in the range of 1011 ohm-cm, all qualifying for ESD applications. Out of all nanomodified PA6 material 7 wt % PA6/NGP was preferred as its showed both improved mechanical and electrical properties.
dc.description.departmentEngineering
dc.formatText
dc.format.extent54 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationNavale, S. V. (2018). <i>Feasibility study of thermoplastic nanocomposite for ESD applications using additive manufacturing</i> (Unpublished thesis). Texas State University, San Marcos, Texas.
dc.identifier.urihttps://hdl.handle.net/10877/13105
dc.language.isoen
dc.subjectAdditive manufacturing
dc.subject3D printing
dc.subjectFused deposition modelling (FDM)
dc.subjectTwin screw extrusion
dc.subjectElectro Static charge dissipation
dc.subjectAnnealing
dc.titleFeasibility study of thermoplastic nanocomposite for ESD applications using additive manufacturing
dc.typeThesis
thesis.degree.departmentEngineering
thesis.degree.disciplineEngineering
thesis.degree.grantorTexas State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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