PP/POE共混物挤出过程相态演变的研究  

Study on Phase State Development of PP/POE Blends in the Extrusion

作　　者：吴湘锋[1] 王凤娟[2] 许鑫华[2] 

机构地区：[1]石家庄铁道大学材料科学与工程学院,河北石家庄050043 [2]天津大学材料科学与工程学院,天津300072

出　　处：《现代塑料加工应用》2013年第2期22-25,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金(02490220)资助

摘　　要：研究了聚丙烯/乙烯-1-辛烯共聚物(PP/POE)共混物沿双螺杆挤出方向的相态、分散相尺寸和相结构演化的标度行为。结果表明:当POE的质量分数为20%时,分散相粒径(d_p)在挤出阶段后期增加;当POE的质量分数为60%时,平均特征长度(L_m)沿螺杆挤出轴向位置一直增加;此外,共混体系相结构的演变具有动力学自相似,且当POE质量分数低于60%时分形维数D_L沿着螺杆挤出位置逐渐增大。blends along suits show t e phase morphology, size and scaling behavior development of PP/POE twin-screw extrusion direction were investigated. The experimental re- he size of the dispersed phase （dp） increases at the later stage of ex- trusion when the mass ratio of POE is 20%, while the average characteristic length （Lm） inereases at all the stage when the mass ratio of POE is 60%. In addition, the phase structure development of PP/POE blends possesses self-similarity, and the fractal dimension（Dc） gradually increases along the extruder length when the mass ratio of POE is less than 60%.

关 键 词：聚丙烯 乙烯-1-辛烯共聚物 相结构 双螺杆 挤出 

分 类 号：TQ320.663[化学工程—合成树脂塑料工业]