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Mechanical and Physical Properties of Needle Punched Nonwoven Kenaf Fiber Mat Composites Produc by Resin Transfer Moulding(RTM)  
Mechanical and Physical Properties of Needle Punched Nonwoven Kenaf Fiber Mat Composites Produc by Resin Transfer Moulding(RTM)
資料類型: PDF文件
關鍵詞: stitching  density  penetration  depth  nonwoven  resin  transfer  
moulding  alkaline  treatment  
資料大小: 109K
所屬學科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
Theeffectofmatfabricationparametersi.e.stitchingdensity(SD)andpenetrationdepth(PD)onthemechanicalpropertiesofneedlepunchednonwovenkenaffibrematreinforcedepoxycompositesproducedviaresintransfermoulding(RTM)techniquewasinvestigated.Kumarcl]reportedthatappearanceanddegreeofcompressionwhichmayinfluencethestrengthofaneedlefeltnonwovenfibermat,weremainlyinfluencedbyneedlearrangementintheneedleboard,needleparameters,needlingparameters(penetrationdepthandstitchingdensityanddirectionofneedling).Thustheaimofthisstudyistoinvestigatetheeffectofneedlingparametersfactorsi.eSDandPDinenhancingthemechanicalstrengthofkenaffiberepoxycomposites.ThevariationintheSDvaluefrom25cm-2t075cm-2andPDfroml.0cmt02.0cmseemstogivesignificantchangesonmechanicalpropertiesofthecompositesbyalteringthefiberinterlockingpatternwithinthenonwovens.TheidealSDandPDfornonwovenkenaffibrewererespectively50crrl-2andl.5cm(SsoPi.s).Asignificantenhancementofflexuralpropertiesandimpactpropertieswasobservedfortheresultedcomposites.NeithertoohighSDnorPDwasresultedinexcessivefibrebreakageandlooseningofphysicalinterlockingthusreducedtheflexuralstrengthofthecomposites.6%NaOHofalkalinetreatmentisfoundtobeoptimumconcentrationfortreatingkenaffibrecompositeswhichenhancedthefiber-matrixadhesionwithepoxymatrix.SimilarobservationwasfoundbyEdeerozeyetal.[2]inwhich6%ofNaOHistheoptimumtreatmentintermsofenhancingthepropertiesofkenaffiber.Goodfiber-matrixinteractionimpartedbetterflexuralandthermalpropertiesbutslightlyreducedtheimpactpropertiesoftheresultedcomposites.
作者: Z. A. Mohd. Ishak, M. S. Salim, R. Mat. Taib, M. Z. Ahmad Thirmizir
上傳時間: 2013-06-21 16:35:21
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