PC／SEBS／CB抗静电复合物的加工方式研究  

Study on Blending Procedures of PC/SEBS/CB Antistatic Composite

作　　者：傅轶[1,2] 周建波[1] 刘述梅[1] 赵建青[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]银禧工程塑料(东莞)有限公司,广东东莞523187

出　　处：《塑料工业》2008年第12期68-71,79,共5页China Plastics Industry

基　　金：2006广东省省级财政支持技术改造项目(06190026512000403);2007关键领域重点突破招标项目(东莞专项)(200716831)

摘　　要：以聚碳酸酯(PC)/苯乙烯-乙烯/丁烯-苯乙烯共聚物(SEBS)共混物为基体材料,以导电炭黑(CB)为填料,通过熔融共混的方法制备了高抗冲抗静电复合材料。研究了PC/SEBS/CB一步挤出、分别以PC/CB和SEBS/CB为母粒两步挤出三种不同加工方式对复合物电性能和力学性能的影响。结果表明,采用母粒两步挤出的加工方式能够使PC/SEBS(质量比80/20)的发生渗滤转变时所需的炭黑质量分数从3.2%降低至2.1%;采用SEBS/CB母粒两步挤出时,添加质量分数20%的SEBS和质量分数3.5%的CB,能够获得电性能和力学性能俱佳的复合材料,缺口冲击强度达到63kJ/m2,断裂伸长率保持在115%。High impact antistatic polycarbonate （PC） composite was prepared by melt blending with carbon black （CB） as conductive filler and PC/styrene-ethylene-butylene-styrene block copolymer （SEBS） as matrix materials. The effects of three kinds of blending procedures, namely one-step extrusion, PC/CB masterbatch two-step extrusion and SEBS/CB masterbatch two-step extrusion, on the property of the composites were studied. The results showed the masterbatch two-step extrusion could reduce the mass ratio of the carbon black which used in the mutation process from insulation to conduction from 3.2wt% to 2. lwt% ; the mechanical and electrical properties of the composite prepared by means of SEBS/CB masterbatch two-step extrusion were excellent, in which the mass fractions of SEBS and CB were 20% and 3.5% respectively, the notched Izod impact strength of the composite reached 63kJ/m^2, and the tensile elongation was kept at 115%.

关 键 词：聚碳酸酯 苯乙烯-乙烯/丁烯-苯乙烯共聚物 炭黑 抗静电 加工方式 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]