PP/SBS/滑石粉三元复合材料性能研究

Study on Properties of PP/SBS/Talc Ternary Composite

通过熔融共混制备了不同滑石粉(经偶联剂KH550表面改性)用量的聚丙烯(PP)/丁苯热塑性弹性体(SBS)/滑石粉复合材料(PP与SBS的配比固定为90/10),同时研究了该复合材料的力学性能和流动性能。结果表明:随着滑石粉用量的增加,PP/SBS/滑石粉复合材料的弹性模量和拉伸强度下降;弯曲性能、冲击性能和熔体流动速率则先提高后降低,且均在滑石粉用量为10份时达到最大值;另外添加了改性滑石粉的PP/SBS/滑石粉复合材料,其拉伸强度、冲击强度和熔体流动速率均高于未改性滑石粉填充的复合材料。

Polypropylene（PP）/styrene butadiene thermoplastic elastomer（SBS）/talc composites with different content of talc were prepared by melt blending method.In the PP/SBS/talc ternary composites,the ratio of PP and SBS was fixed at 90/10,and the talc was surface treated by coupling agent KH550.The mechanical properties and flowing property of the composites were investigated.The results indicate that with the increase of the talc content,the elastic modulus and tensile strength of the PP/SBS/talc composites decrease;the bending properties,impact properties and melt flow rate increase at first and then decrease,and reach the maximum when the addition of talc is 10 phr;moreover,the tensile strength,impact strength and melt flow rate of the composites which filled with treated talc are higher than those of the composites filled with untreated talc.