Polytetrafluoroethylene (PTFE) paste extrusion: Experiments and flow simulations

Mitsoulis, E; Hatzikiriakos, SG; Stamboulides, C

dc.contributor.author	Mitsoulis, E	en
dc.contributor.author	Hatzikiriakos, SG	en
dc.contributor.author	Stamboulides, C	en
dc.date.accessioned	2014-03-01T02:52:05Z
dc.date.available	2014-03-01T02:52:05Z
dc.date.issued	2009	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35837
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-70449854499&partnerID=40&md5=82318a1c9bcbf98b37a04e451dcd921f	en
dc.subject	Fibrillation	en
dc.subject	Isopar® lubricants	en
dc.subject	Paste extrusion	en
dc.subject	PTFE	en
dc.subject	PTFE structure formation	en
dc.subject	Structural parameter	en
dc.subject.other	Conservation equations	en
dc.subject.other	Design characteristics	en
dc.subject.other	Experimental observation	en
dc.subject.other	Fibrillation	en
dc.subject.other	Isothermal conditions	en
dc.subject.other	Operating condition	en
dc.subject.other	PTFE	en
dc.subject.other	Structural parameter	en
dc.subject.other	Structure formations	en
dc.subject.other	Elastomers	en
dc.subject.other	Ethylene	en
dc.subject.other	Extrusion	en
dc.subject.other	Flow simulation	en
dc.subject.other	Lubricants	en
dc.subject.other	Plastic products	en
dc.subject.other	Plasticity	en
dc.subject.other	Simulators	en
dc.subject.other	Extrusion dies	en
dc.title	Polytetrafluoroethylene (PTFE) paste extrusion: Experiments and flow simulations	en
heal.type	conferenceItem	en
heal.publicationDate	2009	en
heal.abstract	In this paper the effect of the physical properties of the lubricant and operating conditions and design characteristics of dies on the PTFE paste extrusion flow was examined experimentally in order to understand physically the process. Based on the experimental results, a Theological constitutive equation is proposed to model the flow of poly-tetra-fluoro-ethylene (PTFE) paste. Steady-state compressible flow simulations are carried out, governed by the conservation equations of mass and momentum under isothermal conditions, and taking into account a slip law at the wall due to the presence of lubricant in the paste. The effects of compressibility and slip are shown to be essential for the results to be in good agreement with experimental observations.	en
heal.journalName	Annual Technical Conference - ANTEC, Conference Proceedings	en
dc.identifier.volume	2	en
dc.identifier.spage	1147	en
dc.identifier.epage	1151	en