简介：Researchesonwoodnanocomposites,whichinvolvenanoscienceandtechnology,woodscience,materialsscienceandotherrelatedsubjects,haveimportantsciencesignificationandpromisingprospectforthedevelopmentandstudyofnewwoodcompositeswithhighappendingvaluesandmulti-properties.Thispaperreviewedtheconventionalwoodcomposites,andthendiscussedtheapproachestopreparewoodnanocomposites.Basedontheachievementsofresearchesonpolymer/montmorillonite(MMT)nanocomposites,thedesignideasofpreparingnanocompositesofwoodandinorganicMMTweresystematicallyputforward.Nanocompoundingofwoodandothermaterialsisaneffectiveapproachtogreatlyimproveormodifywood.

简介：这张手稿用设计策略的织物集中于骨头修理/新生，并且加亮导致新奇nanocomposite系统的nanobiotechnology开发。大约650万破裂在美国每年发生，并且大约550,000个这些单个盒子要求了骨头接枝的申请。自然发生并且allogenous骨头最广泛地为骨头接枝被使用了基于的治疗；然而，象施主缺乏和感染的风险那样有重要问题。用合成、自然的biomaterials的选择被开发了，并且一些为要求骨头接枝的临床的应用程序是商业地可得到的。然而，设计很仔细模仿骨头织物在结构上，和罐头的理想的合成接枝仍然是大挑战在造骨细胞和祖先房间人口调制需要的功能。Nanobiomaterials，明确地，nanocompositeshydroxyapatite创作了(哈)或骨胶原极其正在答应接枝代用品。biocomposites能被制作模仿本国的骨头织物的材料作文，并且另外，当使用nano时--哈(减少的谷物尺寸)，一个人模仿本国的骨头的结构的安排。骨头生物学和结构的好理解对骨头mimicking接枝代用品的开发批评。哈并且能进一步调制regenerative/healing的优秀osteoconductive性质处理跟随破裂损害的骨胶原展览。与另外的聚合biomaterials结合将增强因此做新奇nano的机械性质--哈比得上人的骨头的基于的composites。我们用nanocomposites在最近的研究上报导为部分骨头缺点的新生作为粒子和nanofibers被制作了。在nanocomposites的研究，在理想的未来发展加亮一个枢轴的角色整形外科植入设备，然而进一步的重要前进是必要的完成临床的使用。

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简介：Theevolutionandtheoriginof"solid-likestate"inmoltenpolymer/claynanocompositesarestudied.Usingpolypropylene/clayhybrid(PPCH)withsufficientmaleicanhydridemodifiedPP(PP-MA)ascompatibilizer,wellexfoliationyetsolid-likestatewasachievedafterannealinginmoltenstate.Comprehensivelinearviscoelasticityandnon-linearrheologicalbehaviorstogetherwithWAXDandTEMarestudiedonPPCHatvariousdispersionstagesfocusingontime,temperatureanddeformationdependenciesofthe"solid-like"stateinmoltennanocomposites.Basedonthese,itisrevealedthatthesolid-structureisdevelopedgraduallyalongwithannealingthroughthestagesofinter-layerexpansionbyPP-MA,thediffusionandassociationofexfoliatedsilicateplatelets,theformationofband/chainstructureand,finally,apercolatedclayassociatednetwork,whichisresponsibleforthemeltrigidityorsolid-likestate.Thenetworkwillbebrokendownbymeltfrozen/crystallizationandweakenedatlargeshearorstrongflowand,evenmoresurprisingly,maybedisruptedbyusingtraceamountofsilanecouplingagentwhichmayblocktheedgeinteractionofplatelets.Thesolid-likestructurecausescharacteristicnon-linearrheologicalbehaviors,e.g.residualstressafterstepshear,abnormalhugestressovershootsinstepflowsand,mostremarkably,thenegativefirstnormalstressfunctionsinsteadyshearorstepflows.Therheologicalandstructuralargumentschallengetheexistingmodelsofstrengthenedentangledpolymernetworkbytetheredpolymerchainsconnectingclayparticlesorbychainsinconfinedmeltsorfrictionalinteractionamongtactoids.Aschemeofpercolatednetworkingofassociatedclayplatelets,whichmayinbandformofedgeconnectingexfoliatedplatelets,issuggestedtoexplainpreviousexperimentalresults.

简介：在为准备nanoclay/vinylester胶化上衣的vinylester的montmorillonite(MMT)的分散被报导。MMT/vinylester标本的二个集合，也就是打1和类型2，为比较研究作好准备。类型1标本仅仅用ultrasonication被准备，并且类型2标本用ultrasonication和双轴的挤出被准备。根据XRD和TEM结果，类型2标本显示出nanoclay凝块和脱落的高水平的底层。DSC结果证明类型2标本的玻璃转变温度比类型1标本的那些高。当类型2的相应价值是13.5%时，TGA结果证明类型1的4wt.%MMT/vinylester的剩余重量是7.38%，显示在后者的更低的热降级。MMT/vinylester/glass和MMT/vinylester/carbon标本被制作并且测试为机械并且火延迟行为。类型2基于的nanocomposite把最终的张力的力量的显示出的更大的价值压成薄片，曲折力量，interlaminar砍力量，影响力量，水平燃烧率，和比1基于的类型的垂直燃烧率把压成薄片。类型2基于，这把压成薄片的揭示的张力的折断的表面的SEM图象比类型1基于的不或少些有nanoclay的凝块把压成薄片。

简介：Bamboodeteriorationcausedbylightbecomesasignificantproblemasapplicationofbambooextendsfromindoortooutdoor.Thecolorandroughnessofbambooaretwoimportantexteriorperformances.ThisstudyfocusedonUVresistantnanocompositescoatingsforexterioruseandwhataimedtofindaformulationwhichcouldenhancethedurabilityofbamboo.Fourkindsoffilm-formingmaterialsandfourkindsofnanoparticleswereusedtoimprovebambooexteriorperformance.Thecolorandroughnessofnanocompositescoatingsweremeasuredduringacceleratedweathering.Artificialagingtimewas174hatthetemperatureof50℃.TheexperimentshowednanocompositescoatingshadsignificantimprovementinUV-shieldingandnearlyallthesamplespresentedadarkeningtendencyinΔL*andincreasingtendencyinΔa*,ΔE*andΔRa.TheorthogonalexperimentobtainedtheleastchangeincolorandRawhichcouldbeachievedwithnanocompositescoatingmadebymelamineresinandTiO2whena*wasconsideredasanimportantindex.Film-formingmaterialwastheonlyfactorwhichhadsignificantinfluenceoncolorandroughnesswhena*wasnotconsideredasimportantindex,thenmelamineresinwasthebestchoice.

简介：Theepoxynanocompositeswithsimilaramines(CH_3(CH_2)_(17)NH_2andCH_3(CH_2)_(17)N(CH_3)_3CI)treatedmontmorilloniteclayshavebeeninvestigatedbywide-angleX-rayscattering,transmissionelectronmicroscopy(TEM),differentialscanningcalorimetry(DSC)andthermalgravimetricanalysis(TGA).Differentnanocompositestructures,intercalationandexfoliationwereformedbythereactionofoctadecyltrimethylammoniumchloride-exchangedandoctadecylamine-exchangedclayswithepoxyresinandphenalkamineasthecuringagent,respectively.Resultsshowedthattheexfoliatednanocompositecanbeobtainedwhenoctadecylaminewiththelowerpolaritywasusedasamodifier.However,theintercalatednanocompositecanbeobtainedwhenoctadecyltrimethylammoniumchloridewithhigherpolaritywasusedasamodifier.

简介：Thepolypropylene(PP)nanocompositesfilledwithpretreatedhalloysitenanotubes(HNTs)werepreparedbythemelt-blendingmethod.Beforefilling,theas-receivedHNTspowderwasatfirstpurifiedandthenmodified.ThecharacterizationtestsshowedthatthepurifiedHNTshadlessimpurityandmoreuniformporesizedistributionandthesurfacehydrophobicityofthemodifiedHNTswasobviouslyimproved.ThemechanicalandtribologicalpropertiesofthePP/HNTsnanocompositeswereextensivelyinvestigated.Theresultsshowedthatthetensile,bendingandnotchedimpactstrengthofthePP/HNTsnanocompositeswassomewhatimproved,butthewearresistanceofthePP/HNTsnanocompositeswasobviouslyenhanced.

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简介：Theeffectofnanoparticleaggregationonthethermalconductivityofnanocompositesornanofluidsistypicallynonnegligible.Auniversalmodel(Maxwellmodel)includingnanoparticleaggregationismodifiedinordertopredictthethermalconductivityofnanocompositesmoreaccurately.Thepredictedthermalconductivitiesofsilicaandtitaniananoparticlepowdersarecomparedfirstwiththatmeasuredbyahot-wiremethodandthenwiththoseinpreviousexperimentalworks.Theresultsshowthatthereisgoodagreementbetweenourmodelandexperiments,andthatnanoparticleaggregationinananocompositeenhancesthethermalconductivitygreatlyandshouldnotbeignored.Becauseitconsiderstheeffectofaggregation,ourmodelisexpectedtoyieldprecisepredictionsofthethermalconductivityofcomposites.

简介：Biologicalmaterialssuchasbone,tooth,andnacreareload-bearingnanocompositescomposedofmineralandprotein.Sincethemineralcrystalsoftenhaveslendergeometry,thenanocompositesaresusceptibletobuckleunderthecompressiveload.Inthispaper,weanalyzethelocalbucklingbehaviorsofthenanocompositestructureofthebiologicalmaterialsusingabeam-springmodelbywhichwecanconsiderplentyofmineralcrystalsandtheirinteractioninouranalysiscomparedwithexistingstudies.Weshowthatthereisatransitionofthebucklingbehaviorsfromalocalbucklingmodetoaglobalonewhenwecontinuouslyincreasetheaspectratioofmineral,leadingtoanincreaseofthebucklingstrengthwhichlevelsofftothestrengthofthecompositesreinforcedwithcontinuouscrystals.Wefindthatthecontactconditionatthemineraltipshasastrikingeffectonthelocalbucklingmodeatsmallaspectratio,buttheeffectdiminisheswhentheaspectratioislarge.Ouranalysesalsoshowthatthestaggeredarrangementofmineralplaysacentralroleinthestabilityofthebiologicalnanocomposites.

简介：碳nanofibers(CNF)的表面functionalization被执行，ie，CNF第一被氧化然后表面经由一个集会方法是由3-Aminopropyltriethoxysilane(APTES)的silanized。一种新类型高穿抵抗s-CNFs/epoxy合成被制作由在原处反应。FTIR光谱学被用来检测silane在CNF的表面上生产的功能的组的变化。tribological性质和微观结构修改，未修改的CNFs/epoxycomposites分别地被学习。expremental结果显示APTEScovalently成功地被连接到CNF的表面并且在环氧基树脂矩阵改进CNF的分散。磨擦系数和s-CNFs/epoxycomposites的wear率是比在一样的负担下面的u-CNFs/epoxycomposites的那些显然低的。调查也显示磨料穿主要为u-CNFs/epoxy穿机制合成，为在一样的滑动下面合成的s-CNFs/epoxy与细微粘合剂穿穿状况。

简介：Si3N4/TiCnanocompositeceramicshavebeenfabricatedbyhotpressingtechniquewithAl2O3andY2O3asadditives.TheresultsshowedthatwelldispersedcompositepowderwascarriedoutbyaddingdispersantandadjustingpHvaluesofsuspensions.RemarkableincreaseinflexuralstrengthatroomtemperatureswasobtainedbyaddingnanoparticlesinSi3N4matrixwith10%(wtpct)ofnano-Si3N4and15%ofnano-TiC.Theflexuralstrength,fracturetoughnessandhardnesswere1025MPa,7.5MPa·1/2and15.6GPa,respectively.Themicrostructuresofmaterialswereanalyzedbyscanningelectronmicroscopy(SEM)andtransmissionelectronmicroscopy(TEM),whichindicatedthatTiCnanoparticlesdistributeinthematrixandatthegrainboundaries.Accordingtothefractureform,lowcontentsofnanoparticlescouldrefinematrixgrainsandleadtothecrackdeflectionaswellascrackpinning.Themultiplexmicrostructurewasformedbymixingnano-Si3N4particles.Thecracktrajectoriesexhibitedcrackdeflection,rod-likegrainbridgingandpull-out.

简介：这个工作的目的是用一起沉淀过程和hot-pressing方法学习铜氧化铝nanocomposites的合成，并且调查他们的机械性质。在锻烧以后的合成粒子和化学作文的平均尺寸上的锻烧温度的效果也被分析。包括sintering温度，热压力和收拾行李的时间的sintering参数被优化制作氧化铝nanoparticles增强的铜矩阵composites(CMC)。密度，与1wt%增强的CMC的microhardness和tribological性质，2wt%，3wt%，4wt%和氧化铝nanoparticles的5wt%相应地被调查。结果证明为CMC的最佳准备参数是9004)完成了TSH的病人。手术后的化疗wa谔?谔的使用？？

简介：效果形态学，水晶结构和composites由反应milling准备了的Mg/C的氢吸着性质上的瞬间被学习。传播电子显微镜(TEM)与瞬间的增加准备的那Mg/Ccomposites有粒子尺寸的nanoscale关于在3以后的20-120nm的观察表演milling的h不到1MPaH2。MgH2有四面的水晶组织支配在里面有倾斜的六角形的棱柱的几何形状的材料。从X光检查衍射(XRD)和内容学习的氢，瞬间和微晶的碳在支持加氢率上有synergistic效果在里面反应milling过程。从微分扫描calorimetric(DSC)研究，除氢作用达到顶点有瞬间的Mg/C材料的温度被降低到299-340？

简介：Fe2O3/activecarbon(Fe2O3/AC)nanocompositeswerereadilyfabricatedbypyrolyzingFe3+impregnatedactivecarboninanitrogenatmosphere.Theas-preparedcompositeswerestudiedbyX-raypowderdiffraction(XRD),X-rayphotoelectronspectroscopy(XPS)andtransmissionelectronmicroscopy(TEM).Thecapacitivepropertyofthecompositeswasinvestigatedbycyclicvoltammetry(CV)andgalvanostaticcharge-dischargetest.Physicalcharacterizationsshowthattheγ-Fe2O3finegrainsdispersedintheACwell,withameansizeof21.24nm.Electrochemicaltestsin6mol/LKOHsolutionsindicatethattheas-preparednanocompositesexhibitedimprovedcapacitiveproperties.Thespecificcapacitance(SC)ofFe2O3/ACnanocompositeswasupto188.4F/gthatwasderivedfrombothelectrochemicaldouble-layercapacitanceandpseudo-capacitance,whichwas78%largerthanthatofpristineAC.AsymmetriccapacitorwithFe2O3/ACnanocompositesaselectrodeshowedanexcellentcyclingstability.TheSCwasonlyreducedbyafactorof9.2%after2000cyclesatacurrentdensityof1A/g.

简介：AseriesofLa2O3/MCnylonnanocompositeswerepreparedviainsitupolymerization.Theeffectsofcontentofnano-La2O3onthemechanicalpropertiesofnanocompositeswerestudied.Dispersionofnano-La2O3inMCnylonmatrixwasobservedwithSEM.ThecrystalstructureofnanocompositeswascharacterizedbymeansofXRD.SEManalysisshowsthatLa2O3nanoparticlesareuniformlydispersedinMCnylonmatrixandlittleclusteringexistswhenthecontentofnano-La2O3islowerthan1%,however,whenthecontentofnano-La2O3ismorethan1%,itbeginstocluster.XRDanalysisindicatsthatnano-La2O3doesnotchangethecrystalstructureofMCnylon.Mechanicalpropertiestestsshowthatthetensilestrength,elongationatbreak,impactstrength,flexuralstrength,andflexuralmodulusofnanocompositesfirstincreasethendecreaseasthecontentofnano-La2O3isincreased.Whenthecontentofnano-La2O3is0.5%,thetensilestrengthandelongationatbreakofnanocompositesreachmaximum,whichare17.9%and52.1%higherrespectivelythanthoseofMCnylon.Whenthecontentofnano-La2O3is1.0%,theimpactstrength,flexuralstrengthandflexuralmodulusofnanocompositesreachmaximum,whichare36.6%,12.7%and16.3%higherrespectivelythanthoseofMCnylon.

简介：Simultaneousfunctionalizationandreductionofgrapheneoxide(GO)isrealizedbyrefluxingofGOsuspensionwithpolyetheramine(D2000)followedbythermaltreatmentat120°C.ComparedtoGO,theD2000-treatedGO(GOD2000)becomeshydrophobic,thermallystableandhighlyconductivewithanelectricalconductivityof11S/m,whichisalmost8ordersofmagnitudehigherthanthatofGO.DuetothehighconductivityandimproveddispersionofGO-D2000,itsepoxynanocompositesexhibitasharptransitionfromelectricallyinsulatingtoconductingwithalowpercolationthresholdof0.71vol%.With3.6wt%GO-D2000,theglasstransitiontemperatureoftheepoxynanocompositeis27Khigherthanthatofneatepoxy.

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