简介：Thisresearchadoptedfourmethodstotoughenepoxyadhesives.Theywereliquidhydroxylgroupterminatedpolybutadiene(HTPB)rubbermodification,siliconrubbermodification,polyacrylatemultiplicityelastomerparticulatesemulsionmodificationandchemicalgraftingmodification.Aftermodification,theshearingstrengthandtheraptureelongationweretested.Theinterfaceandthechemicalreactionbetweenthemodifiersandtheepoxywereanalyzedbyscanningelectronmicroscope(SEM)andinfraredopticalspectrum.Theresultsshowthattheelastomerparticulatesmodificationandthechemicalgraftingmodificationcanreachthebettertougheningeffects.

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简介：Anepoxy-terminatedhyperbranchedaromaticpolyester(P3)wassynthesizedfromahyperbranchedaromaticpolyestercontainingcarboxylicacidendgroups(P1),whichwasderivedfromthecondensationpolymerizationoftheAB2monomer,5-acetoxyisophthalicacid.PolymerP1wasconvertedintothepolymericacidchloridebyreactionwiththionylchloride.Theacidchloridewasreactedwithethanolandglycidoltoformapoly(ethylester)(P2)andanepoxyterminatedmaterial(P3),respectively.Thereactionconditionsineachstepoftheseprocesseshadtobecontrolledverycarefullytoavoidunwantedcross-linkingreactions.Thecharacterizationofproductsandintermediates,includingmolecularweightdistributionsandthermalproperties,arereported.

简介：在这个工作，新奇bisbenzimidazolylpyridine-functionalized荧光灯环氧基树脂树脂为organophosphate杀虫剂被综合察觉。环氧基树脂树脂被Fourier变换红外线的光谱学(英尺红外)描绘，质子原子磁性的回声光谱学(1HNMR)，胶化浸透层析(GPC)，微分扫描热量测定(DSC)和荧光光谱学。在与Eu(III)离子装载以后，环氧基树脂树脂显示出强壮的荧光排出物。当暴露了在答案跟踪diethylchlorophosphate的数量时，荧光排放被观察即刻地被熄灭。熄灭常数K为在617 熄灭的sv；nm决心是0.377 ；× ；103 L/mol。这敏感熄灭排放的功能和聚合支持的容易的处理自然使树脂能是organophosphates的察觉的一个有希望的chemosensor候选人。

简介：Foritspoorfilmformingandwater-resistanceproperties,waterbomeepoxysystemisnotappliedfortheprotectionofsteel.Themainreasonfortheseproblemsisthattheemulsifieroftheemulsifyingefficiencyisnothighwhilecannotbeseparatedouteasily.Now,intermsoftheuseofnewlysynthesizedemulsifierstoimprovethesetwoshortcomings,anewsystemwasdeveloped.Comparedwithsolvent-basedcoatings,thisnewwaterbomeepoxysystem’scorrosionresistancewasfoundclosetothesolvent-basedones.Finally,theapplcationofthisnewwaterbomeepoxysystemfortheprotectionofsteelisdiscussedbriefly.

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：纸论述cantilevered的气动弹性变形的特征合成翅膀，当一个合成扁平的盘子把压成薄片，理想化。合成把压成薄片与环氧基树脂由编织玻璃纤维制造了矩阵。laminate的有弹性、动态的性质为气动弹性变形的计算试验性地被决定。气动弹性变形的风隧道测试laminate被执行，结果显示出那拍翅，动态不稳定性发生了。cantilevered把也显示的限制周期振幅压成薄片，flutter以后摆动。试验性拍翅速度和频率被我们的计算分析验证。

简介：为铸造过程(VIMP)的真空注入的一个低粘性环氧基树脂树脂系统(猎人1564/3486)的chemorheological行为与粘性实验被学习。dual-Arrheniusrheological模型和设计粘性模型被建立并且与试验性的数据相比。结果证明在dual-Arrhenius模型计算的更早的阶段的粘性比试验性的数据小，当设计模型计算的数据更大时。一起联合二个模型能以一种更可信的方式预言树脂系统的rheological行为。为VIMP的树脂系统的处理窗口基于二个模型被决定。处理温度的最佳是3045楎倭挠瑡污吗？

简介：高效水泥基于合成材料被增加环氧基树脂准备乳剂。环氧基树脂乳剂与环氧基树脂被综合在实验室的磷的酸酉旨和poly乙二醇。这环氧基树脂乳剂优于另外的乳剂，例如稍微使脱水了，并且，很好拍摄形成能力。环氧基树脂乳剂的机械性质堕落抵抗和结构修改了水泥臼被学习。试验性的结果证明修改水泥臼的机械性质稍微与增加环氧基树脂乳剂内容被增加，特别弯曲力量。所有修改的臼的堕落抵抗比未修改的臼好。聚合物电影形成在矩阵和总数区域之间的桥阶段，并且在水泥水和系统形成三尺寸的结构，它改进修改的臼的机械性质。

简介：ToraisetheroomtemperatureionicconductivityandimprovethemechanicalstrengthofaPEO-basedpolymerelectrolyte,anoncrystallinetwo-componentepoxyelectrolytesystemhasbeenprepared.Thediglycidyletherofpolyethyleneglycolsasprecursorsofthesystemweresynthesizedbyatwo-stepprocess.Thepresumedstructureoftheproductwascharacterized,by13C,1HNMRandIRspectroscopy.Itwasfoundthataside-reactionoccurredbetweenthesecondaryhydroxylgroupofPEG-chlorohydrinandepichlorohydrininsomedegree,resultinginaby-productcontaining—CH2Clsidegroup.Byselectingacharacteristicsignal,whichisundistortedbytheincreaseinthelengthofCH2CH2—Osegment,a1HNMRapproachofdeterminingtheequivalentepoxyweight（EEW）wasproposed.ThemethodisvalidtospecimenseventhoughtheEEWisashighas2,000.TheexaminationofthespecimensbyDSCshowedthatepoxidationgreatlydepressedthecrystallinityofthePEG’s,whereastheTgwasraised.

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：Montmorillonite(MMT)wasdirectlymodifiedwithhexadecyltrimethylammoniumbromide.Theinterlayerspacingoftheorganophilicmontmorillonite(organo-MMT)correspondingtothed(001)planepeakwas2.21nm.Theinfluencesofthecontentoforgano-MMTandmixingconditionsincludingmixingtemperatureandmixingtimeontheintercalationandexfoliationstructuresofMMT/epoxyresincompositeswereinvestigatedbywideX-raydiffraction(WXRD).TheX-raypatternsrevealthatorgano-MMTwasintercalatedbytheepoxyresinduringmixingprocess.Onlyundercertainmixingconditions,couldtheexfoliationnanocompositesbeformed.Themechanicalandthermalpropertiesofthecompositesweremeasured.TheresultsindicatethatthecompositeshavebettermechanicalpropertiesandhigherTgthanthoseofthepristineepoxyresin.

简介：为有高温度和湿度抵抗的电阻器的一种衬裙被修改环氧树脂，合适的nano-SiO_2在80degC增加了获得。修改环氧树脂衬裙的Thestructure，热稳定性，湿度抵抗，和词法特征被电的测试学习，红外线的系列(红外)分析，ands装电子显微镜学(SEM)。更紧缩、稳定的inter-crosslinkednetwork结构在修改环氧树脂衬裙被形成的结果表演与nano-SiO_2增加了，它极大地改进修改环氧树脂衬裙的表演。有大约2.71%的nano-SiO_2的衬裙，没有絮凝并且聚集，在房间温度为六保留了月，具有油漆电阻器的好稳定性，和表面是一致的，紧密并且在它上的空气洞外面。有油漆的如此的衬裙的抵抗的变化比率在高温度和湿度抵抗测试以后是在1000的不到一个。

简介：Inthiswork,graphene-modifiedepoxy-basedanti-corrosioncoatingswerepreparedandtheinfluenceofgrapheneontheanti-corrosionperformanceoftheepoxy-basedcoatingswasinvestigatedwithwatercontactangletest,chemicalsolutionimmersiontest,andelectrochemicaltest.Thewatercontactangleandchemicalsolutionresistanceoftheepoxy-basedcoatingswereimprovedwithanincreaseingraphenecontentfrom0to0.4%.Theseresultsprovethatadditionofgraphenecansignificantlyimprovethehydrophobicityandimpermeabilityofepoxybasedcoatings.However,whenthegraphenecontentwasincreasedto0.5%,theperformanceoftheepoxy-basedcoatingsdecreasedbecauseofgrapheneaggregation.Tafelpolarizationresultsshowthatgrapheneadditioncansignificantlyreducethecorrosioncurrentdensityandcorrosionpotentialofepoxy-basedcoatings,whichenhancetheiranti-corrosionperformance.

简介：Carboranebisphenolnovolacs(3and4)weresynthesizedinthepresenceofacidcatalystfromcarboranebisphenols(5and6)andformaldehyde.Furtherepoxidizationofcarboranebisphenolnovolacswithepichlorohydringavecarboranebisphenolepoxynovolacs(1and2).Themolecularweightandepoxyvalueofobtainedresinsweredeterminedusingthemolecularweightoftheirprecursors.Theepoxyvaluesof1and2were0.48and0.52respectively,higherthanthemaximumtheoreticalepoxyvalue(0.45)ofdifunctionalcarboranebisphenolepoxyresins.FTIRandNMRwereutilizedtocharacterize1and2.ThecuringbehaviorswerealsostudiedbyDSCandtheoptimizedcuringconditionswereobtained.TGAanalysisindicatedthatcarboranemoietycouldshielditsadjacentorganicstructuresagainstinitialdecomposition.Ontheotherhand,B―Honcarboranecagecouldreactwithoxygentoformathree-dimensionalnetworklinkedbyB―O―BandB―Cbonds,whichfurtherblockedthemovementofformedradicalsandthusthedegradationprocesswasinhibited.

简介：Thepost-curekineticsofelectronbeam(EB)curingofepoxyresininitiatedbydiaryiodiniumwasinvestigated.Thepost-curereactionfitsfirstorderreactionkinetics.Thereactionrateconstantincreaseswithincreasingtreatmenttemperatureofpost-cure.Thereactionrateofpost-cureismuchlowerthantherateofitsreactiononelectronbeamtreatment.

简介：在用在一个软矩阵由传导性的微粒fillers组成的传导性的composites做的表面涂层的准备，裂缝将随装载的微粒的增加发展，它被相信与在glycidyl之间的亲核的增加反应有关盖住结束poly(bisphenolA-co-epichlorohydrin)并且isophoronediisocyanate分子。这治好的反应为在整个涂层的cross-linking网络的产生负责。稳固的粒子在化学反应上装载的影响可以被描述为排除卷的效果，也就是说，装载的高稳固的粒子将占据在因此阻止化学反应发生的功能的组之间的空间。作为直接后果，cross-linking网络不能由于治好反应的不足适当地发展。这将导致裂缝的产生，被英尺红外分析在这个工作支持。

简介：nanocarbon材料的突出的机械性质，特别碳nanotube(CNT)，为高效的小结构的材料使他们成为最有希望的增强nanofillers之一。然而，复杂然而并非eco友好的表面functionalization处理(例如HNO3氧化)通常是必要的帮助驱散nanocarbon材料进环氧基树脂或造在他们之间的化学契约。此处，氮做了碳nanotube(NCNT)被用来代替CNT增强环氧基树脂树脂，并且NCNT/epoxynanocomposite的机械性质在CNT/epoxynanocomposites上显示出重要优势。制造过程简单、环境地友好，并且避免复杂，弄脏并且精力集中的表面functionalization过程。而且，NCNT/epoxy暂停展出了相对低粘性，它为随后的申请是有利的。NCNT的增强的机制也被建议。现在的工作作为潜在的小结构材料给出一个容易的答案到高效的nanocomposite的准备。

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.