80电影天堂网,少妇高潮一区二区三区99,jαpαnesehd熟女熟妇伦,无码人妻精品一区二区蜜桃网站

搜索:  
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(guān)鍵詞: stitching  density  penetration  depth  nonwoven  resin  transfer  
moulding  alkaline  treatment  
資料大小: 109K
所屬學(xué)科: 分子表征
來(lái)源: 第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集(2013.6.2-6 武漢)
簡(jiǎn)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(shí)間: 2013-06-21 16:35:21
下載次數(shù): 1
消耗積分: 2  
立即下載:
1人
1人
1人
友情提示:下載后對(duì)該資源進(jìn)行評(píng)論,即可獎(jiǎng)勵(lì)2分。
報(bào)告錯(cuò)誤:  1.下載無(wú)效  2. 資料明顯無(wú)價(jià)值  3. 資料重復(fù)存在

相關(guān)評(píng)論 共有0人發(fā)表評(píng)論 更多評(píng)論
你還沒(méi)有登錄,無(wú)法發(fā)表評(píng)論,請(qǐng)首先 登錄 注冊(cè)
免責(zé)聲明:本站部分資源由網(wǎng)友推薦,來(lái)自互聯(lián)網(wǎng),版權(quán)屬于原版權(quán)人,如果不慎侵犯到您的權(quán)利,敬請(qǐng)告知,我們會(huì)在第一時(shí)間撤除。本站中各網(wǎng)友的評(píng)論只代表其個(gè)人觀點(diǎn),不代表本站同意其觀點(diǎn)。