 Wysłany: Pią 9:56, 11 Lut 2011 Temat postu: abercrombie outlet Soft segment waterborne polyure |
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| Soft segment waterborne polyurethane containing carboxyl of properties
DSoFTSEGMENTHuJinxinSUNDuoxianSUNZheDept. ofChem. Eng. & Techn. . TsinghuaUniversity, BeUing100084, China2SchoolofChem. Eng. & Techn. , 7 ~ anjinUniversity,abercrombie outlet, ~ anjin300072, ChinaAbstract: Analicyclicaqueouspolyurethane (PU) prepolymerswithsoftsegmentcontainingcarboxylWaSsynthesizedfromisophoronediscarnate (IPDI), dimethylolbutnoicacid (DMBA), p0lycapr0lact0ne (PCL) and2-propanol, followedbyneutralizationpendantcarboxylbytriethylamine (TEA) / KOH. Inthearticle, theeffectsofthetypeofcounterions, PUsolidcontent,uggs online, thepHvalue, smallmoleculesalt / acidonitsstability, viscosity, CMC, particlesizes, conductivitywereinvestigated. Inthemeanwhile. itWaScomparedthatditierenceandrelationofthepHcriticalvalueandCMCinPUdispersionswithditierentsoftsegmentmolecularweight. TheresultshowedthatwhilePUcontentWaSraisingitsviscosityWaSenhancing. PUviscositywith30wt% solidcontentWaShighertwentytimesthanPUviscositywith20wt% solidcontent. WiththeadditionofsmallmoleculesaltNaC1. electroviscouseffectofPUdispersionsgraduallydisappearedandPUconductivityappearedfluctuating. WithNaCIaddition / molecularweightofsoftsegmentincrease, CMCvalueminished,ugg online bestellen, thecalciumionwaSmoreobviousdestructivefunctiontothediffuseelectricaldoublelayerofPUdispersions. WiththeincreaSingofpHvalue,uggs nederland, PUparticlesizesgraduallydecreaSedbutconductivityincreaSinglyrose. WiththeincreaSingofmolecularweightofsoftsegment, PUviscosityWaSgoingup, pHcriticalvalueincreaSed. PUsystemWaSofbuffereffectonadscititiousacid. Keywords: Containingionsinsoftsegment; Aqueouspolyurethane; Viscosity; Conductivity; Thecriticalvalue. More articles related to topics： moncler jackets Blue Fox etiology of multiple infe buy ghd hair Know _457 non-sugar sweeteners moncler jackets The Karate Kid, such as pasta life |
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