Ultra-High Molecular Weight Polyethylene(UHMWPE)is known for its ex-ceptional properties,such as high wear resistance and strength,rigidity,lightweight,corrosion resistance,low friction coefficient and biocompatibility,and it is widely applied in advanced material field.The physical characteristics including melting point,crystallinity and entangle-ment density of the nascent state UHMWPE has significant influence on its post processing and performance applications.Melting behavior of the nascent state UHMWPE powder is observed by differential scanning calorimeter(DSC),which is correlated with molecular weight and en-tanglement density.It is found that correlation relationship between molecular weight and melt-ing point could be established by specific temperature rise and fall program of DSC,so the fast industrial testing method of the molecular weight in production was realized.Heating-melting and isothermal crystallization programs are used to connect melt behavior with entanglement den-sity,contributing to a deeper understanding of UHMWPE resin's performance characteristics.
ultra-high molecular weight polyethylenelow entanglement statedifferenti-al scanning calorimeter(DSC)crystallinitymelting point
维普
万方数据
