SAE TECHNICAL PAPER SERIES 970244 Lubricated Thermoplastic Composites for High P-V Applications Edward H. Williams III LNP Engineering Plastics International Congress & Exposition Detroit, Michigan February 24-27,1997 400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (412)776-4841 Fax:(412)776-5760 Downloaded from SAE International by Univ of California Berkeley, Monday, August 06, 2018Theappearance oftheISSNcodeatthebottomofthispageindicatesSAE'sconsentthat copiesofthepapermaybemadefor personalorinternaiuseofspecificclients.Thisconsent isgivenontheconditionhowever,thatthecopierpaya$7.00perarticlecopyfeethrough theCopyrightClearance Center, Inc.Operations Center,222Rosewood Drive,Danvers, MA01923forcopyingbeyondthatpermittedbySections 107or108oftheU.S.Copyright Law.Thisconsentdoesnotextendtootherkindsofcopyingsuchascopyingforgeneral distribution, foradvertising orpromotional purposes,forcreating newcollectiveworks,or forresale. SAEroutinelystocksprintedpapersforaperiodofthreeyearsfollowingdate ofpublication. DirectyourorderstoSAECustomer SalesandSatisfaction Department. QuantityreprintratescanbeobtainedfromtheCustomerSalesandSatisfaction Depart ment. Torequestpermission toreprintatechnicalpaperorpermission tousecopyrighted SAE publications inotherworks,contacttheSAEPublications Group. Nopartofthispublication maybyreproduced inanyform,inanelectronic retrievalsystem orotherwise, withoutthepriorwrittenpermission ofthepublisher. ISSN0148-7191 Copyright 1997SocietyofAutomotive Engineers, Inc. Positionsandopinionsadvanced inthispaperarethoseoftheauthor(s)andnotnecessarily thoseofSAE.Theauthorissolelyresponsible forthecontent ofthepaper.Aprocessis availablebywhichdiscussions willbeprintedwiththepaperifitispublished inSAE Transactions. Forpermission topublishthispaperinfullorinpart,contacttheSAE Publications Group. Personswishingtosubmitpaperstobeconsidered forpresentation orpublication through SAEshouldsendthemanuscript ora300wordabstractofaproposedmanuscript to: Secretary, Engineering MeetingsBoard,SAE. PrintedinUSA Downloaded from SAE International by Univ of California Berkeley, Monday, August 06, 2018970244 Lubricated Thermoplastic Composites forHighP-VApplications Edward H.Williams III LNPEngineering Plastics Abstract Thispaperinvestigates theuseofinternally lubricated andreinforced thermoplastic compounds in tribological applications requiringhighpressure-velocity (P V)performance. Elevated temperature weartesting, limitingP-Vtestingandelevatedtemperature mechanical testingdemonstrate thefeasibility ofusinginternally lubricated andreinforced Polyetheretherketone and thermoplastic Polyimides inhighP-Vapplications. Thedata alsosuggestthatreinforced andlubricated Polyphenylene SulfideandPolyphthalamide maybeworthinvestigating as evenlowercostalternatives. Introduction Inthesearchforlowercostcomponents in automotive applications, engineers haveembraced theuse ofinjectionmoldedthermoplastic composites inmany applications previously designated formetal.However, for applications thatoperateathighpressure-velocity levels (above100,000 fpm-psi) inelevated temperature environments, the materials ofchoicehavebeenlimitedto specialty thermoset polyimides, semi-thermoplastic polyamide-imides andcompression moldedfluoropolymer compounds. Althoughthesematerials offerperformance enhancements notfoundinmetalbearingalloys,theyare relatively expensive frombothamaterials and manufacturing perspective, oftenrequiring specialized moldingequipment andextensive postmoldcuringor annealing. Recentworkhasshowncertainhigh temperature, internally lubricated andreinforced thermoplastic compound· tobesuitableforthesetypesof applications (sealrings,thrustwashers, bearings)atlower costandreducedmanufacturing expense. Thispaperinvestigates thetribological and mechanical performance ofseveralofthesehigh temperature internallylubricated thermoplastic compounds incomparison tosomeofthemorecommonly used thermoset andsemi-thermopl