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3D打印技术发展已日趋成熟,其特殊的增材制造原理使得材料利用率极高,方便快捷的成型方法推动了3D技术的发展。但3D打印产品使用耗材单一、制品强度较弱、应用范围不广泛等缺点抑制了3D打印技术在传统塑料加工行业的应用。一种新型聚合物熔体微分3D打印设备,可使用碳纳米管(MWCNTs)/聚乳酸(PLA)复合材料制造可导电3D打印产品。结果表明:该复合材料(10%MWCNTs)导电制品导电率可达到1.6 S/m,且该复合材料具有优异的可打印性能;使用聚合物熔体微分3D打印机以纸片为基材打印制造简易电路图,该电路图在纸基板上附着力强;使用熔体微分3D打印机制作防静电托盘制品,SEM图像表明,该托盘制品层与层之间结合紧密,成型精度以及刚度均可符合使用要求。通过实验对比,验证了该新型聚合物熔体微分3D打印机对MWCNTs/PLA复合材料制备可导电制品具有可行性,且可为3D打印电路板及防静电制品提供理论基础和技术指导。
The development of 3D printing technology has matured. Its special additive manufacturing principle has made the material utilization rate extremely high. The convenient and rapid forming method has promoted the development of 3D technology. However, 3D printing products using a single consumable, product strength is weak, the application is not widespread and other shortcomings inhibited the 3D printing technology in the traditional plastics processing industry. A new polymer melt differential 3D printing device that manufactures conductive 3D printed products using carbon nanotubes (MWCNTs) / polylactic acid (PLA) composites. The results show that the electrical conductivity of the composite (10% MWCNTs) conductive product can reach 1.6 S / m, and the composite has excellent printability. The use of polymer melt differential 3D printer to print paper as a substrate simple Circuit diagram, the circuit diagram on the paper substrate adhesion; the use of melt differential 3D printer anti-static tray products, SEM images show that the tray product layer and layer combination of close, molding accuracy and stiffness can meet the requirements. Through experimental comparison, it is verified that the new polymer melt differential 3D printer is feasible for the preparation of conductive articles of MWCNTs / PLA composites, and can provide theoretical basis and technical guidance for 3D printed circuit boards and anti-static products.