熔喷非织造布纺丝模头流道设计

20102955MechanicalScienceandTechnologyforAerospaceEngineeringMayVo.l292010No.5:2009-04-15:(1967-),,,,[e-mail]尹明富,李晓青(,300160):以熔喷非织造布纺丝模头为研究对象,在比较T形流道鱼尾形流道和衣架形流道3种设计方法基础上,得出了衣架形流道最符合宽幅熔喷非织造布生产工艺要求的结论,并且给出了几何尺寸的设计公式利用ANSYS对聚合物熔体在流道的流动过程进行压力和流速分布模拟仿真结果表明,衣架形模头流道完全符合设计要求:熔喷非织造布;T形流道;鱼尾形流道;衣架形流道;ANSYS模拟:TH122:A:10038728(2010)05059903ADesignoftheSpinningDieChannelforMeltblownNonwovenFabricYinMingfu,LiXiaoqing(SchoolofMechanicalandElectricEngineering,TianjinPolytechnicUniversity,Tianjin300160)Abstract:Thespinningdieofmeltblownnonwovenfabricisstudiedinthispaper.BycomparingtheTchannelwiththefishtailchannelandthecoathangerchanne,lwedrawtheconclusionthatthecoathangerchannelconformstotheproductiontechnologicalrequirementofmeltblownnonwovenfabric.Then,theformulaofthecoathangerchannelgeometrysizeisderived.Forfurtherconfirmingthecoathangerchanneldesign,thepressureandrateofflowprocessofpolymermeltinthechannelaresimulatedbyANSYS.Theresultindicatesthatthecoathangerdiechannelconformstothedesignrequirementperfectly.Thedesignofcoathangerchannelformeltblownspinningdie,ishelpfulfordesigningthegeometrysizeofwidespinningdiechannels.Keywords:meltblownnonwovenfabric;Tchanne;lfishtrailchanne;lcoathangerchanne;lANSYSsimulation,,,,,,,,,,,,1,,,,,,,,,,,292,,,;,,,,3,T(1)TT11T,UI1,UIUI=1-(n+005)nnn(n+1)3n+12(2n+1)nhR2n+1BRnBL1n:n;R;B;h;L,UInRBL,,h/R,B/R,B/L,R,B,,,500mm,,T(2)T,22UIUI=1+l-r0LhH2n+11+1cosnlLcos-r0LhH2n+11n:lO;H;,tan(/2)=B/L,,UI,,R,,B,,;B,,R,,,(3)3,T,T33,T,,,,,6005:,,,,,,,,3,,x(),y(),z(),,R0=3n+12(2n+1)nn+1BH213!r=R0(z/B)13∀y=323n+12(2n+1)2nn+1H13z232B,H,n,31810mm,430mm,240mm2B=1710mm,H=13mm,(PET),n=0707ry,Rmin=11mm;R0=73mm;y0=1915mmANSYS,454,45,,54,3,3,,ANSYS,[][1],.[J].,2006,(8):79~80[2]GlawionE.[J].,2006,(7):35~38[3].[J].,2006,14(5):9~11[4]ChenT,WangX,HuangX.Effectsofprocessingparametersonthefiberdiameterofmeltblownnonwovenfabrics[J].TextileResearchJourna,l2005,75(1):76~80[5]RothM,etal.Anovelpolymermodifierforimprovedmeltblownfabricproperties[J].NonwovensWorld,2005,14(1):40~45[6]SunQ,ZhangD.Analysisandsimulationofnonnewtonianflowinthecoathangerdieofameltblownprocess[J].JournalofAppliedPolymerScience,1998,67:193~200[7]WangY.Theflowdistributionofmoltenpolymersinslitdiesandcoathangerdiethroughthreedimensionalfiniteelementanalysis[J].PolymerEngineeringandScience,1991,31(3):204~212[8]SchlfliD.Analysisofpolymerflowthroughcoathangermeltdistributors[J].InternationalPolymProcssing,1995,10[9]WenSH,LiuTJ,TsouJD.Threedimensionalfiniteelementanalysisofpolymericfluidflowinanextrusiondie[J].PolymerEngineeringandScience,1994,34(10):827~834[10].[M].:,2002[11].[M]:,1998[12].[M].:,2000601