高流動聚乙烯專用料及其改性研究.pdf

1、南京理工大學(xué)碩士學(xué)位論文高流動聚乙烯專用料及其改性研究姓名：曹文申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：賈紅兵20100622Absract碩士論文AbstractInthispaperthestructureandpropertiesofW，anewhighfluiditypolyethylenematerialproducedbyYangziPetrochemicalCompanyLtd，WaSsystematicallychara

2、cterizedY撐WaScompared、析tllsimilarsamplesof7200(FormosaPlastics)and52518(kanPetrochemical)ThankstothepoorpropertiesofY撐，modifiedY撐sampleswereobtainedbyblendingthemetallocenepolyethylenewithitThentheimprovingeffectofroPE’S

3、contentonthestructureandpropertiesofY撐WaSstudiedTheresultsconfmnedthatWhadahighmobilitytheMFRofwhichWaS199／10minThetensilestrengthelaSticmodulus，tensilestressatbreakandbendingstrengthofWwerehighbutitsimpactstrengthWaSnot

4、appropriateTheadditionofmPEincreaSedtheapparentviscosityofWal180℃，whichmadeitsmobilitybecomeworseButwhenthetemperaturerosetoabove200“C，mPE’SaccessionhadlittleeffectonthemobilityandapparentviscosityofW：Theintroductionofro

5、PEmadelittlechangeonthecrystallizationtemperature，butthemeltingpeaktemperatureandcrystallinityincreasedWhentheadditioncontentofHlPEreached20wt％，theblendsownedthemaximumcrystaUinity；naPE’Saccessionsignificantlyincreasedth

6、eimpactstrengthatroomtemperatureandlowtemperatureofW，whilethetensilestrength，elasticmodulus，tensilestressatbreak，bendingstrengthandbendingmodulusslightlydecreased，whichbasicallymaintainedtherigidofW；WhenthecontentofroPEr

7、eached20wt％，themodifiedsamplehadthebestcomprehensivepropertiesItstensilestrengthwas2178MPatensilestressatbreakwas1153MPabendingmodulusWaS101921MPabendingstrengthwas2347MPathebreakelongationwas13662％，IZODimpactstrengthatr

8、oomtemperatureandlowtemperatureWasrespectively3983and3654Ⅺr一，themeltflowrateWas1949／10minmeltingpeaktemperaturewas1356“C，thecrystallizationtemperatureWaS12167“CandcrystallinityWas605％Keywords：Polyethylene，HighfluidityBle