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15 个结果
  • 简介:目前,3D游戏已经成为一种趋势,但2D游戏依然是很多玩家喜爱的类型。在很多玩家看来,3D游戏玩起来让人感到眼晕,因为我们无法接受画面的视角旋转。本文是2D游戏开发高手胡颖卓为读者带来2D编程的一些常用算法的介绍。

  • 标签: 2D游戏 算法 编程 3D游戏 游戏开发
  • 简介:INTRODUCTIONPolyhydroxybutyrate(PHB)andit'scopolymerPHBVachievedbythebiosyntheticpathway,hasattractedmuchattentionasanalternationbiodegradablematerials.Theyhavetheexcellentbiocompatibilityandproperdegradationperiodsbyoptimizationofpertinentmolecularweightandcopolymercompositions.

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  • 简介:有磅(50%)的polythiophene/polyoxymethylene-blend的Electrorheological性质和爬恢复行为/POM(50%)作文被调查。粒子尺寸,电导率和绝缘的价值被测量是24.77m,3.85獩爠慥瑣潩?湩琠敨物映敩摬

  • 标签: 混合悬浮 弹性行为 聚噻吩 蠕变 导电 电场强度
  • 简介:Thedigitalimageprocessingtechniquewasusedfortheextractionofphysicalinformationfromthetemporalimageofphasestructureintheprocessofphaseseparationintheblendofpoly(butyleneterephthalate-co-caprolactone)withpolycarbonate.Thepowerspectrumimagesofthetwo-dimensionalFouriertransformation(2DFT)ofthetemporalimageofphasestructurereflectthechangeofthephasesizewithtime.

  • 标签: Digital image analysis Phase structure FOURIER
  • 简介:阶段形态学,demixing的批评温度,和为混合由吸水的nanosilica(A200)或恐水病的nanosilica(R974)导致了的polystyrene/poly(乙烯基甲基醚)(PS/PVME)的分子的动力学的变化被调查。与混合矩阵的阶段分离,A200由于在A200和PVME之间的强壮的相互作用移居了进PVME富有的阶段,当R974移动了进PS富有的阶段时。热力学的可混和性和集中变化被A200nanoparticles显著地在A200上由于PVME的表面吸附在混合矩阵的阶段分离期间延迟,从rheological测量和颠倒热能力的削弱的增长在批评区域附近由关联长度验证了(Cp)在经由调制微分扫描的玻璃转变期间热量测定(MDSC)。尽管有对同质的混合矩阵的部分动力学的A200和R974的没有影响,nanosilica导致的限制的链散开仍然发生了。在nanosilica和聚合物部件之间的相互作用能限制混合矩阵的终端松驰并且进一步操作他们的阶段行为。

  • 标签: 纳米二氧化硅 分子动力学 混合矩阵 聚苯乙烯 甲基醚 乙烯基
  • 简介:这份报纸的目的是报导纤维素nanocrystals(计算机数值控制)的增加的效果在上机械,热并且障碍性质(乙烯基白酒)poly,/chitosan(PVA/Cs)bio-nanocomposites电影通过扔过程的溶剂准备了。PVA/Cs/CNCs电影的描述以X光检查被执行衍射(XRD),传播电子显微镜学(TEM),扫描电子显微镜学(SEM),thermogravimetric分析(TGA和DTG),氧传播率(OTR),和张力的测试。TEM和SEM结果证明在低装载层次,计算机数值控制在PVA/Cs矩阵同质地被驱散。在电影的张力的力量和模量分别地从55.1MPa增加了到98.4MPa并且从395MPa到690MPa,当计算机数值控制内容从0wt%去了1.0wt%时。PVA/Cs矩阵的热稳定性和氧障碍性质最好在装载的计算机数值控制的1.0wt%被提高。合并计算机数值控制达到的提高的性质能在各种各样的应用是有益的。

  • 标签: 纳米晶体 聚乙烯醇 PVA 纳米复合材料 纤维素 壳聚糖
  • 简介:Inthispaper,blendmembranesfrompolyvinylacetate(PVAc)andblockcopolymerpoly(amide-12-b-ethyleneoxide)(Pebax1074)arepreparedbysolutioncastingandsolventevaporationmethod.Althoughtheyarehomogeneousonamacro-scale,theobservationsfromDSCandSEMindicatemicro-phaseseparationforPVAc/Pebax1074blendmembranes.WiththeincreaseofPebax1074content,gaspermeabilitiesofCO2,H2,N2andCH4allincreasegreatly.PVAc/Pebax1074blendmembraneswithhighPVAccontentareappropriateforCO2/CH4separation.Thetemperaturedependenceofgaspermeabilityisdividedintorubberyregionandglassyregion.Theactivationenergiesofpermeationinrubberyregionaresmallerthanthoseinglassyregion,andtheyalldecreasewithincreasingPebax1074content.ForN2,H2andCH4,theirgaspermeationpropertiesaremainlyinfluencedbythedual-modesorptionandhydrostaticpressureeffect.ButforCO2,itspermeabilityincreaseswiththeincreaseofpressureduetoCO2-inducedplasticizationeffect,whichismoreobviousforPVAc/Pebax1074blendmembraneswithhighPVAccontent.

  • 标签: polyvinyl acetate poly(amide-12-b-ethylene oxide) blend membrane
  • 简介:Blendbasedpolymernanocomposites,comprisingJanusnanoparticlesattheirpolymer/polymerinterface,wereanalytically/experimentallyevaluated.Themodelingprocedurewasperformedintwostages:first,modelingofpolymer/polymerinterfaceregioncomprisingJanusnanoparticlesandsecond,modelingoftheentiresystemsasafunctionofthevariationoftheblendmorphology.Inthefirststage,themodelingprocedurewasperformedbasedonthedevelopmentofthemodelproposedbyJietal.andinthesecondstage,thefundamentalofKolarik’smodelwasusedinordertoproposeadevelopedandmorepracticalmodel.ItwasshownthatJanusnanoparticlesmayformdualpolymer/particleinterphaseatpolymer/polymerinterfacewhichcandrasticallyaffectthefinalmechanicalpropertiesofthesystem.Comparingtheresultsoftensiletestsimposedondifferentpreparedsampleswiththepredictionsofthemodelproveditsaccuracyandreliability(error<9%).

  • 标签: BLEND BASED POLYMER nanocomposites JANUS NANOPARTICLES
  • 简介:Inhibitorhydroquinone(HQ)wasaddedtothereactionsystemtopreparepolypropylene/polystyrene(PP/PS)blendpelletswithoutPSonthesurfaceduringdiffusionandsubsequentpolymerizationofstyreneinisotacticpolypropylenepellets.TheeffectsoftheamountofHQondiametricaldistributionofPS,surfacemorphologyofthepelletsandphasemorphologyinsidetheblendpelletswereinvestigated.

  • 标签: 聚丙烯 散开 相配 形态学 对苯二酚
  • 简介:Insitucompatibilizationoflowdensitypolyehylene(LDPE)(30%)andnylon-6(70%)blendsthroughone-stepreactiveextrusionusingt-BuOOHasaninitiatorandlowmolec-ularweightinterfacialagentsascompatibilizerswasstudied.Thecompatibilizercontainedalongchainbydrocarbon,doublebondandtwopolarfunctionalgroupswhichwascapableofreactingwithbothLDPEandnylon-6inthepresenceofinitiatortoformacopolymerattheinterfaceofthetwopolymerphases.Theextrudedblendsexhibitedsignificanten-hancementintheircompatibilitybasedonmorphological,thermalanalysisandmechanicalstudies.Theeffectofthehydrocarbonchainlengthandstructureofthefunctionalgroupofthecompatibilizerwasalsoexamined.Itwasfoundthatblendspreparedbyusingthecompatibilizercontaininglongerhydrocarbonchainandamidegrouphadbettermechanicalproperties.

  • 标签: LDPE NYLON-6 REACTIVE extrusion COMPATIBILIZER
  • 简介:Polymerizable离子的液体共聚物PMMA-co-BVIm-Br被激进的聚合技术综合,并且由Fourier变换描绘了红外线的spectrometryFTIR,<啜class=“a-plus-plus”>1H原子磁性的回声<啜class=“a-plus-plus”>1H-NMR和胶化浸透层析GPC。产生共聚物被用来经由一个阶段倒置方法准备polyvinylidene氟化物PVDF混合膜。多型性,表面wettability和混合膜的希腊语的第六个字母潜力上的共聚物的效果被ATR-FTIR,接触角度仪器和希腊语的第六个字母潜力分析器调查。扫描电子显微镜学SEM和SEMedition也被使用调查形态学和制作的膜的表面元素变化。结果显示那PMMA-co-BVIm-Br共聚物在让混合膜在试验性的pH范围期间有积极表面的膜的表面上存在。共聚物也赞成在PVDF膜的水晶阶段的形成。接触角度实验显示那PMMA-co-BVIm-Br共聚物能交换混合膜的wettability从对吸水由交换Br恐水病<啜class=“a-plus-plus”>有PF的阴离子<潜水艇class=“a-plus-plus”>6<啜class=“a-plus-plus”>。与纯PVDF膜相比,混合膜的水流动和水恢复流动显然被提高。从流动恢复比率FR和全部的犯规比率R的结果<潜水艇class=“a-plus-plus”>t都建议混合膜有好犯规反的性质。

  • 标签: 表面润湿性 PVDF膜 聚合技术 共混膜 离子液体 共聚物