材料加工形态学7-2注塑-形态课件

TheCrystallinityofdifferentpositionsacrossthethicknessdirectionofthepartFibrillarcrystalsSpherulitesSizeofcrystalsShearstressdistributioninamoldSkin-corestructure(1)Schematicoftheskin/corestructureofinjection-mouldedparts:(a)non-compatibilizedblend;(b)compatibilizedblendS.Fellahi,etal.morphologicalstabilityininjection-mouldedhigh-densitypolyethylene/polyamide-6blends,Polymer,1996,37(13):2615-2626分散相在皮层是否存在？Weldline*Source:WeldlineMoldFillingGateSolidifiedpartS.Fellahi,etal.morphologicalstabilityininjection-mouldedhigh-densitypolyethylene/polyamide-6blends,Polymer,1996,37(13):2615-2626Schematicrepresentationofweldlinestructure:(a)non-compatibilizedblend;(b)compatibilizedblendPhasemorphologynearweldlineSkin-corestructure注塑聚合物制品的不足：如内部缩孔表面凹陷熔接痕内应力大翘曲变形等制品性能与理论值相差很远充满矛盾的注塑过程和性能不高的注塑成型制品。在热流道板上加了两支动态保压活塞，使型腔中物料在剪切力场中逐渐冻结成型。动态保压注塑（DPIM）HDPEShish-kebabiPPInterlockingshish-kebabHDPE(5000S)的拉伸强度可从23.0MPa提高到93.0MPa，提高300％。iPP的拉伸强度在纵横方向上从32MPa提高到63MPaZhong-MingLi,WeiYang,ShuyingYang,RuiHuang,Ming-BoYang.JournalofMaterialsScience,“Morphology-tensilebehaviorrelationshipininjectionmoldedpoly(ethyleneterephthalate)/polyethyleneandpolycarbonate/polyethyleneblends(I):skin-corestructure”,2004,39:413-432Zhong-MingLi,Bang-Hu

Xie,ShuyingYang,RuiHuang,Ming-BoYang.JournalofMaterialsScience,“Morphology-tensilebehaviorrelationshipininjectionmoldedpoly(ethyleneterephthalate)/polyethyleneandpolycarbonate/polyethylene,2004,39:432-443Zhong-MingLi,Cheng-GuangHuang,WeiYang,Ming-BoYang,MacromolecularMaterialsandEngineering,“Morphologydependentdoubleyieldingininjectionmoldedpolycarbonate/polyethyleneblend”,2004,289:10