螺杆转速对ABS/EVA力学性能影响  

Effect of Screw Rotation Rate on Mechanical Properties of ABS/EVA Blends

作　　者：李怀栋[1] 王京 张云灿[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]南京际华3521特种装备有限公司,江苏南京210007

出　　处：《现代塑料加工应用》2010年第4期28-30,共3页Modern Plastics Processing and Applications

摘　　要：采用在材料熔融挤出共混过程中提高双螺杆挤出机螺杆转速的方法,研究了较高螺杆转速条件下双螺杆挤出机的机械剪切应力对丙烯腈-丁二烯-苯乙烯共聚物/乙烯-乙酸乙烯共聚物(ABS/EVA)共混材料力学性能的影响。结果表明,双螺杆挤出机的高剪切应力可促进EVA颗粒的分散和界面结合力的增强。在220℃的挤出温度下,当螺杆转速由120 r/min提高至1 200 r/min时,ABS/EVA共混材料的缺口冲击强度由14.3 kJ/m2提高至16.6 kJ/m2。The effect of high shearing stress of the twin-screw extruder during melt extruding on the mechanical properties of ABS/EVA blends was investigated by increasing the screw rotation speed. The results show that the high shearing stress of the twin-screw extruder during melt extruding can accelerate the distribution of EVA particles in the ABS matrix and enhance the interfacial bonding strength between EVA and ABS. At the extrusion temperature of 220 ℃ ,when the screw rotation speed increases from 120 r/min to 1 200 r/ min,the nocted Izod impact strength of the ABS/EVA blends increases from 14.3 kJ/m^2 to 16.6 kJ/m^2.

关 键 词：丙烯腈-丁二烯-苯乙烯共聚物 乙烯-乙酸乙烯共聚物 剪切应力 力学性能 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]