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HDPE-g-MAH Modified with Hydroxylated Melamine Derivatives  
HDPE-g-MAH Modified with Hydroxylated Melamine Derivatives
資料類型: PDF文件
關(guān)鍵詞: Melamine  derivative  HDPE  Reactive  compounding  
資料大小: 73K
所屬學(xué)科: 分子表征
來源: 第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集(2013.6.2-6 武漢)
簡介:
Thisworkinvestigatesthepossibilityofmodifyingmaleicanhydridegraftedhighdensitypolyethylene(HDPE-g-MAH)withhydroxylatedmelaminederivativesinanattempttointroducereversiblecrosslinkingbehavior.HDPE-g-MAHwascompoundedwithfourmelaminederivatives(loadingrateof5wt%)thathavedifferentnumberofhydroxylgroupsrespectively.SampleswerefirstcharacterizedwithFTIRandtheologyforevidenceofsuccessfulreactivemodification.FTIRanalysissuggeststhatallmelaminederivativesreactedwithHDPE-g-MAH;moreover,comparedtoHDPE-g-MAH,allcompoundspossessasignificantincreaseincomplexviscosity,suggestingtheformationofanetwork.Morecompoundswerepreparedformechanicaltestinganditisfoundthattheygainedimprovementineitherflexuralmodulusorimpactstrength.AlthoughnomarkeddifferenceisseenbetweenthemodifiedpolymersandthevirginHDPE-g-MAHintheirDSCcurves,somecompoundsshowincreasedheatdeflectiontemperature(HDT).Itcanbeconcludedthat,undertheemployedexperimentalconditions,allhydroxylatedmelaminederivativesweresuccessfullygraftedtoHDPE-g-MAH,thereforeinducingpermanentand/orreversiblecrosslinkednetwork.Consequentlythetheologicalandmechanicalpropertiesofthebasepolymerweremodified.
作者: Y. Liu, C. Hahd , R. Dicke, T. Pham
上傳時(shí)間: 2013-06-28 16:18:20
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