鎢基金屬粉末注射成形喂料制備與評價.pdf

1、分類號UDC密級編號Y992009十南大警CENTRALSOUTHUNIVERSITY碩士學位論文論文題目學科、專業(yè)研究生姓名導師姓名及專業(yè)技術職務鎢基金屬粉末注射成形喂料制備與評價材料物理與化學專業(yè)唐艷粱叔全教授ABSTRACTThetuIlgsteIlbasedme詛lpowder蛔ec吐onmolding龜edstockwithwaxbasednmlti_p01ymer(EVA，HDPE)binderhasbeeIlpr印ared

2、tostIldymeinteractionofp01yTnera11dpowderByaddingdi脅entadditiVes，therheologicalpmpcnies，t11emlalpropenieshavebeenstudiedandthe111icro棚【echanismofmeadditiveshavebecllanalyzcdmrougIlin丘aredspectrIHnThecrystallatticehasbeen

3、appliedinmeinteractionofpowdera11dpol弘ner，whichcan舀vesometlleoreticalprincipleinmedct∞nlinationofpowdersizeandconcen仃ationTherheologicalbellaviorcallbedescribed弱psedoplas如nuidwithashearmi徹mgeffectAdditivescanimprovemeuni

4、刪tyanddecreasetheviscosit)，，especially也emodi矗edDBP(dibutylphthalatc)c孤irn掣oVe吐毽popenies證a舒eaterextemT11eviscoactivationeIlergyEis2158u，mol，andⅡ1cshearratcsensitiv毋factornF2is027，wllichisuse觸inttleinjectionprocedure、孫e11m

5、econcen仃ationofmodifiedDBPis2％andthcloadingis50％，mefeedstockhasmebestviscosi鑼andunifom_lityThea9910mcrationwillhappcllwimla唱erloading，0rmeidcadcIlsi夠carulotbegotwithsrnallerloadingintllesinterprocessThemodifiedDBPcaIldec

6、reasemeassociationoftllemolecularinmefcedstockt0decreasemeviscosi鑼thustoimprovetllerheolo西calbeha啊or1hrou曲DTA，TGanalyze，theadditiveswillnotdoharmtomet11ermaldeco“l(fā)position，andmebinderhasagoodperf0加anceinmesinterstageKEYW