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Thermoplastics Reinforced by Self-welded Glass Fibers Effect of Interfacial Affinity on Preferential Segregation  
Thermoplastics Reinforced by Self-welded Glass Fibers Effect of Interfacial Affinity on Preferential Segregation
资料类型: PDF文件
关键词: Fiber-polymer  interaction  Fiber-reinforced  polymer  composites  Interfacial  shear  
strength  
资料大小: 69K
所属学科: 通用高分子材料
来源: 来源网络
简介:
Theaimofthisstudyistoclarifytheeffectofrelativeinterfacialaffinityontheformationofglassfiber-polyamide6(GF-PA6)networksindifferentpolymermatrices.Thefiber-polymerinteractionwasestimatedbythecontactangleoftheinsituformedmicro-dropsontheGFsurfaceandbytheinterfacialshearstrength(IFSS)betweentheglassfiberandthepolymer.Theself-weldedGF-PA6networkintheternarycompositeswasexaminedviathescanningelectronmicroscopy(SEM)anddynamicmechanicalanalysis.ItwasfoundthatarelativelyhighinterfacialaffinitybetweenGFandPA6(apositiveAWA*)isessentialforthepreferentialadsorptionofPA60ntheGFsurface.However,theencapsulationratio,NPA6,aparameterforthepercentageofthePA6phasethatencapsulatesthefiber,whichdependsontheinterfacialtensionbetweenPA6andthepolymermatrix.AsimplifiedtheoreticalanalysiselucidatedthatalowerinterfacialtensionbetweenPA6andthepolymermatrixiseffectivetominimizethetotalfreeenergyintheternarysystembyincreasingNPA6fortheconstructionofastrongerGF-PA6networkthroughoutthepolymer.PolymerviscosityaffectsthekineticprocessofthepreferentialsegregationandthePA6domainsize,whichisanotherfactorthatcausesthevariationinNPA6[1].
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