简介：伍德composites能通常在三部分被分类：把压成薄片的composites，混合composites和渗透的composites。每部分有它的自己的特征和罐头进一步被划分。这篇论文在中国介绍历史和木头composites的开发的国家。关于把胶水压成薄片的木材的研究是稀罕的，工业几乎不来到是。成就的一个伟人在混合composites被获得了，它是很好工业化的。scrimber上的许多研究被做了，中国研究人员正在寻找在中国开发scrimber工业的一个可行方法。中国研究人员也在学习木头塑料composites(世界和平理事会)花了那么多精力，但是它一直不由于高费用是工业化的。

简介：TwogradesofDyneema~?compositelaminateswiththecommercialdesignationsofHB26andHB50werecutintoblockswithorwithoutanedgecrackandcompressedinthelongitudinalfiberdirection.Thecrackedanduncrackedspecimensshowsimilarcompressiveresponsesincludingfailurepatternandfailureload.ThetwogradesofDyneema~?compositesexhibitsdifferentfailuremodes:adiffuse,sinusoidalbucklingpatternforDyneema~?HB50duetoitsweakmatrixconstituentandakinkbandforDyneema~?HB26duetoitsrelativelystrongermatrixconstituent.AneffectivefiniteelementmodelisusedtosimulatethecollapseofDyneema~?composites,andthesensitivityoflaminatecompressiveresponsestotheoveralleffectiveshearmodulus,interlaminarshearstrength,thicknessandimperfectionangleareinvestigated.Thechangeoffailuremodefromkinkbandtosinusoidalbucklingpatternbydecreasingtheinterlaminarshearstrengthisvalidatedbythefiniteelementanalyses.

简介：Collagenisthemajoracellcarofconnectivetissueproteininanimals,accountingforabout25%ofthetotalbodyproteinofvertebrates.Anessentialfeatureofthistypeofbiomaterialisthatitdegradesinbiologicenvironments,eventuallydisap-pears,andleavesnopermanentforeignresidue.Averypracticalaspectoftheuseofcollagenisitseaseofpreparationanditswidespreadoccurrenceinnature.Thus,col-lagenhasbeenemployedasabiomaterialinalmosteveryphysicalform.Forexam-ple,collagenfibrescanbeusedasasubstratefornerveregeneration,tendonligament

简介：环境友好thermosettingcomposites被作为矩阵混合小麦面筋(WG)准备，钙碳酸盐(CaCO3)由在120掳C塑造混合到交叉连接的压缩作为可塑剂作为filler和甘油列在后面WG矩阵。形态学观察证明CaCO3粒子细微地在矩阵被驱散。直到进composites的10wt%的CaCO3的加入引起了幼仔的模量和张力的力量显著地增加。在另一方面，在裂缝的潮湿吸收和延伸稍微减少了。

简介：Weinvestigatehigh-modulusdegradablematerialsintendedtoreplacemetalsinbiomedicalapplications.Thesearetypicallycompositescomprisingapolylactide(PLA)matrixreinforcedwithphosphateglassfibres,whichprovidereinforcementsimilartoE-glassbutareentirelydegradableinwatertoproduce,principally,calciumphosphate.Wehavemadecompositesusingavarietyoffibrearchitectures,fromnon-wovenrandommatstounidirectionalfibretapes.Flexuralpropertiesintheregionof30GPamodulusand350MPastrengthhavebeenachieved-directlycomparabletoquotedvaluesforhumancorticalbone.Incollaborationwithothergroupswehavebeguntoconsiderthedevelopmentoffoamedsystemswithstructuresmimickingcancellousboneandthishasshownsignificantpromise.Thefibresinthesefoamedstructuresprovideimprovedcreepresistanceandreinforcementoftheporewalls.Todatethematerialshaveexhibitedexcellentcellularresponsesinvitroandfurtherstudiesareduetoincludeconsiderationofthesurfacecharacterofthematerialsandtheinfluenceofthisoncellinteraction,bothwiththecompositesandtheglassfibresthemselves,whichshowpromiseasastandaloneporousscaffold.

简介：ＦｒａｃｔｕｒｅＣｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆＳｉＣ（ｐ）／ＡｌＣｏｍｐｏｓｉｔｅｓＧｕＨｏｎｇｗｅｉ；ＣａｏＬｉ；ＹｕａｎＧｕａｎｓｅｎ；ＬｉｕＡｎｓｈｅｎｇ；ＷｕＺｉｑｉｎａｎｄＣｈｅｎＬａｎｆｅｎｇ（古宏伟），（曹利），（袁冠森），（刘安生...

简介：转变地方法(TFM)被开发估计有任意的形状的水晶composites的各向异性的绝缘的性质和水晶包括的绝缘的性质，绝缘的轴与各向异性的水晶的那些其校长不同矩阵。包括形状引起的复杂边界值问题被介绍一个转变电场进水晶composites区域避免，并且有效各向异性的绝缘的回答以转变地被提出。而且，数字结果证明水晶composites的有效各向异性的绝缘的回答周期性地作为在包括和矩阵水晶材料的主要的绝缘的轴之间的旋转角度的功能变化。它被发现那更逍遥法外包括形状导致的包括体积部分有效各向异性的绝缘的回答上的深刻效果。

简介：Inthispapertheresultsofahigh-speedtensionexperimentoftheSiC_w/Alcompositehavebeenreportedandasimplifiedtheoreticalmodelhasbeendevelopedtostudythefracturemechanismofcompositesinhigh-speedtension.Thistheoreticalmodelprovidesanewexplanationfortheincreaseofdynamicfracturestrengthofcompositesinhigh-speedtension.

简介：Thedynamicmechanicalpropertiesofwoodpowder/polypropylenecompositeswithdifferentwoodcontenttreatedanduntreatedwiththecompatibilizerhavebeenstudied.Ithasbeenfoundthatadditionofwoodpowdersandthecompatibilizercanbothimprovetheviscoelasticityofcomposites.Glasstransitiontemperature(Tg)ofappropriatewoodpowder-filledcompositesdecreased.Thevalueforthestoragemodulus(G')increasedgraduallywithincreasingwoodpowdercontent.Theadditionofthecompatibiliz...

简介：ThefracturebehaviorofSiCp/A356compositeatroomandhightemperatureswasstudied.Undertensilestressconditionatroomtemperature,thefractureismostlyacombinationofthebrittlefractureofSiCparticlesandductilefractureofA356matrix.Asthetensiletemperatureincreases,thecompositechangesthemainfracturebehaviortotheseparationfractureofthebondingsurfacebetweenSiCparticlesandA356matrix.Whenthetensiletemperaturereaches573K,thefracturebehaviorofthecompositesisalmostthewholeseparationfractureofthebondingsurface,whichisthemainstrengtheningmechanismathightemperature.Underthecyclestressconditionatroomandhightemperatures,themainfracturebehaviorofthecompositesisalwaysacombinationofthebrittlefractureofSiCparticlesandductilefractureofA356matrix.However,underthecyclestressathightemperature,cyclebehaviorofthecompositeschangesfromcyclehardeningatroomtemperaturetothecyclesofteningathightemperature.

简介：Flammabilitypropertiesofcompositesofwoodfiberandrecycledplasticwereevaluatedbytheconecalorimeterandoxygenindexchamber.Resultswereshownasfollows:1)Wood-PVCcompositeshowedworsethermalstabilityontimetoignition(TTI)andmeanheatreleaserate(MHRR),butbetterperformanceonheatreleaserate(HRR)andmeanefficientheatofcombustion(MEHC);wood-PPcompositehadbetterthermalstabilityproperties,butwasworseonotherfireperformance;2)Comparedwithwood-PVCcomposi...

简介：竹子powder/polycaprolactonecomposites(BPPC)被转矩电流计准备调查配方的效果，处理在变阻器上调节BPPC的逻辑性质。词法行为和BPPC的机械性质也被学习。结果证明合成材料的最佳配方由70%polycaprolactone组成，30%竹子根据体积搽粉，联合代理人的铝酸盐的1.6%，1.2%硬脂的酸，和到竹子的2%石蜡根据质量搽粉比率。处理条件参数的最佳为BPPC在100°C在−1和温度在50r·m作为旋转速度被决定。BPPC(包含30拷贝竹子粉末)拥有的著名界面的相容性和BPPC的机械性质。

简介：Agroupofpoly(phthalazinoneethersulfoneketone)/potassium-titanate-whisker(PPSEK/whisker)compositeswaspreparedbycoprecipitationfromsolution.Thewhiskersurfacewasmodifiedusingtitanatecouplingagentpriortoblending.Thetensile,impact,morphologyandthermalpropertiesofthemouldedcompositeswereinvestigated.Themeasurementsshowedthatthetensilestrengthandimpactstrengthofthecompositesincreasedwithincreasingwhiskerscontentupto10to20phr,thereaftertheyshowedadecreaseinthewhiskerscontentreached40phr.Atthesametime,themodulusofthecompositesincreasedwithincreasingwhiskerscontent.Scanningelectronmicroscopystudiesrevealedthatthewhiskerswithinthecompositesweredisperseduniformlybytreatedwithcouplingagent.Finally,thermogravimetricanalysisshowedthattheheatresistanceofthecompositestendedtoincreasewithincreasingwhiskercontent.Theresultswereanalysedanddiscussedintermsofestablishedmodelsofthebehaviourofshort-fiberreinforcedcomposites.

简介：Inordertoimprovethemechanicalpropertiesofpolypyrrole,compositesweremadebyelectropolymerizingpolypyrroleinapolyurethanematrix.Polypyrrole/polyurethane（PPY/PU）compositefilmscontainingCLO4-,BF4-orCH3-C6H4-SO3-counterionsweremadeinavarietyofsolventsystemsandcharacterizedbySEM,electronicconductivity,FTIR,andmechanicalproperties.Compositefilmsshowingmuchgreaterfiexibilitythanpurepolypyrrolewereobtained,buttheirelectronicconductivitiesweresubstantiallylower.Measuredeonductivitiesrangedfrom0.001to8S/cm,tensilestrengthsfrom44to592psi,andelongationtofailurefrom3to70%.

简介：Ion-exchangePolymerMetalComposites(IPMC)areanewclassofintelligentmaterialthatcanbeusedeffectivelyasactuatorsandartificialmuscles.IPMCwasfabricatedanditsdisplacementandforcecharacteristicswereinvestigatedwithrespecttovoltage,frequencyandwaveformofthecontrollingsignal.Asquarewaveforminputgeneratedslightlylargerdis-placementandforcethansinusoidalortriangularwaveform.Whenthevoltagewasincreasedandthefrequencywasdecreased,displacementandforcewerebothincreased.However,althoughthebendingdeformationofIPMCwaslarge,theoutputforcewasmuchlowerthanweexpected.ImprovementoftheforceoutputiskeyandisthemainobstacletobeovercomeinordertomakeIPMCofpracticaluse.

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简介：Thioglycolicacid(TGA)-stabilizedCdTenanocrystals(NCs)werepreparedwithsodiumtelluriteastelluriumsource,whichavoidsthecumbersomeprocessesassociatedwithH2TeorNaHTesources.FluorescentCdTe/SiO2compositesweresynthesizedbyasol-gelmethodwithouttheexchangeofsurfaceligands.ThephasestructureofCdTeNCswasinvestigatedbyX-raydiffractometry.Forcomparison,somecharacterizationsweredoneforboththeCdTeNCsandthecomposites.CdTeNCsandCdTe/SiO2compositeswerecharacterizedwithTEM,digitalcameraandfluorescencespectrophotometer.ThestabilityofCdTeNCsandthecompositeswereinvestigatedinphosphate-bufferedsaline(PBS)bufferandthefluorescentpropertiesofthecompositeswerediscussedindetail.

简介：Someoftheprogressmadeinourlaboratoriesincollaborationwithindustryinresearchanddevelopmentworkonhighperformanceoxide-nonoxidecompositesformetallurgicalapplicationshasbeenreviewed.(1)SiAlONbondedcorundumcompositesforblastfurnaceusagehavebeenproducedbyreduction-nitridationsinteringathightemperature,usingbauxiteinsteadofaluminainthematrix.(2)LowcarbonAl2O3-SiAlONslideplatematerialssuccessfullyusedinhighqualitysteelcontinuouscastinghavebeendevelopedinwhichmostorallofthegraphiteinAl2O3-Cbrickisreplacedbybauxite-basedβ-SiAlON.(3)Al/SimetalbondedAl2O3-Cmaterialcharacterizedbylowcarboncontent,lowfiringtemperatureandin-situformationofcarbidesandnitridesathightemperatureduringservicearefoundtopossessveryhighhotstrengthandverygoodthermalshockresistanceandhavealsobeensuccessfullyusedasslideplatesinladlesandtundishesforhighqualitysteelcasting.

简介：在结构的常规基于可靠性的最佳设计，可靠性基于概率假设被计算，并且设计目的和限制被看作确定的。在许多情况中，然而，在那里存在在设计目的和限制功能的一些模糊因素。在这篇论文，模糊可靠性和模糊限制被介绍为把压成薄片的composites建立模糊基于可靠性的最佳模型。方法在这篇论文开发了的例子表演能把考虑给可靠性需求和结构的经济方面。因为模糊reliability-basedoptimum设计是一个“软”的图案，现在的结果为结构的可靠性的有效评估提供新方法论并且带给我们一个其他的最佳设计想法。

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