Rheological Evaluation of High Temperature Polymers to Identify Successful Extrusion Parameters

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dc.creatorAjinjeru, Christine
dc.creatorKishore, Vidya
dc.creatorLiu, Peng
dc.creatorHassen, Ahmed Arabi
dc.creatorLindahl, John
dc.creatorKunc, Vlastimil
dc.creatorDuty, Chad
dc.date.accessioned2021-11-02T18:09:23Z
dc.date.available2021-11-02T18:09:23Z
dc.date.issued2017
dc.description.abstractWith the advancements in additive manufacturing (AM), several high temperature thermoplastics are being explored as potential AM feedstocks. Some of these high-performance thermoplastics include; polyetherimides (PEI), polyphenylsulfones (PPSU/F), poly (ether ketone ketone)s (PEKK) and polyphenylene sulfide (PPS) as well as their reinforced composites. Most of these advanced resins tend to be more expensive than commodity plastics such as acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA), and their processing parameters have not been determined for most AM systems. This paper demonstrates a method for identifying the appropriate processing conditions for extrusion-based AM deposition systems, in which a material is forced through an orifice at a given flow rate. The pressure required to extrude a shear-thinning thermoplastic at a given shear rate is calculated based on viscoelastic properties of the polymer melt and compared against maximum system pressure to predict successful extrusion. An evaluation of several candidate materials is presented on the Big Area Additive Manufacturing extrusion-based platform.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/89849
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2017 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectprocessing conditionen_US
dc.subjecthigh temperature polymersen_US
dc.subjectthermoplasticsen_US
dc.subjectdeposition systemen_US
dc.subjectextrusion-based additive manufacturingen_US
dc.titleRheological Evaluation of High Temperature Polymers to Identify Successful Extrusion Parametersen_US
dc.typeConference paperen_US

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2017 International Solid Freeform Fabrication Symposium