Preparation and Performance Study of PP/SEBS/HDPE Composite Materials
The PP/SEBS/HDPE ternary blend was prepared by melt blending hydrogenated polystyrene butadiene polystyrene(SEBS)with polypropylene(PP)and polyethylene(PE)using a twin-screw extruder.The flow properties,mechanical properties,thermal properties,crystallization behavior,and compatibility of the blend were studied and analyzed using impact testing machines,thermogravimetric analysis(TGA),infrared spectroscopy,and differential scanning calorimetry(DSC).The results showed that in the PP/PE system,with the increase of PE,the flowability of the blend gradually improved.When the PE content was 20%,the tensile strength,impact strength,and elongation at break of the blend reached the highest,at which point its mechanical properties were optimal;In the ternary blend system,with the increase of SEBS content,the cantilever impact strength of the blend is significantly improved.When the amount of SEBS added is 8%,the mechanical properties of the blend are optimal.Therefore,the optimal system is PP/20%HDPE/8%SEBS,at which point the compatibility of the blend is the best.
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万方数据
维普
