Antistatic and Thermodynamic Properties of Core-shell Structure Wood Plastic Composites
In order to reduce static effect in the wood plastic composites (WPC) arousing from the non-polar structure of high density polyethylene (HDPE) in the shell layer,so as to reduce surface electrical resistance,carbon black (CB) was incorporated in the shell layer to manufacturing anti-static WPC.The electrical,mechanical,morphological and thermal properties were investigated by mega-ohmmeter,universal testing machine,scanning electron microscopy (SEM) and differential scanning calorimetry (DSC),respectively.Experimental results show that the electrical surface resistivity of WPC with core-shell structure was about 1014 Ω,but the incorporation of CB can significantly reduce the electrical surface resistivity.When CB is incorporated at weight content of 20％,the electrical surface resistivity of WPC can reach 106 Ω.Meanwhile,the flexural strength,flexural modulus and impact strength increased by 21.56％,10.77％ and 26.11％,respectively,compared with WPC without CB modification.SEM images revealed that the incorporation of CB can form slice structure in the WPC surface,which is beneficial for the movement of electron,and CB also serves as the nucleating agent of HDPE,which could decrease the degree of crystallinity and lower the melting temperature of HDPE.
Wood Plastic CompositesHigh Density PolyethyleneShell-core StructureAntistaticCarbon BlackThermodymamic Properties
NETL
NSTL
万方数据
维普
