激光表面织构化对电子标签粘接性能的影响

Effect of laser surface texturing on adhesive propertiesof electronic labels

采用激光对ABS塑料板待粘接表面进行激光表面织构化,以研究其对电子标签粘接性能的影响。采用纳秒脉冲激光处理待粘接表面,在激光共聚焦显微镜下观察激光表面织构化前后基板的表面形貌,并分析激光表面织构化前后基板表面粗糙度变化,利用微机控制电子万能试验机检测激光表面织构化后其粘接表面的结合力,研究激光表面织构化对其表面形貌、表面粗糙度及结合力的影响规律,从而确定最佳激光表面织构化工艺参数。激光表面织构化可有效的提高待粘接表面粗糙度,激光表面织构化后基板的表面粗糙度较未处理前的0.077μm提高到1.222μm;激光表面织构化后的粘接力可到达35.5 N,较未处理表面的11.2 N提升了217%。最终确定最佳的激光表面织构化工艺为激光功率200 W,扫描速度6900 mm/s,重复频率50 kHz,脉冲宽度270 ns,填充线间距0.15 mm。最佳激光表面织构化工艺大幅度提高了材料的表面粗糙度,这使材料的粘接性能显著提升。

Laser surface texturing is carried out on the surface to be bonded to ABS plastic sheet to study the effect on the bonding performance of electronic label.The surface to be bonded is pretreated with nanosecond pulsed laser,the surface morphology of the substrate before and after laser surface texturing is observed under a laser confocal microscope,and the change in surface roughness of the substrate before and after laser surface texturing is analyzed.The bonding force of the bonding surface after laser surface texturing is tested using a microcomputer-controlled electronic universal testing machine,and the influence of laser surface texturing on its surface morphology,surface roughness and bonding force is studied to determine the optimal laser surface texturing process parameters.Laser surface texturing can effectively improve the roughness of the surface to be bonded.The surface roughness of the substrate is improved from 0.077μm to 1.222μm after laser surface texturing,and the adhesion force after laser surface texturing is 35.5 N,which is 217%higher than the 11.2 N of the untreated surface.The optimal laser surface texturing process is finally determined to be 200 W laser power,6900 mm/s scanning speed,50 kHz repetition frequency,270 ns pulse width and 0.15 mm filling line spacing.The optimal laser surface texturing process substantially improves the surface roughness of the material,which results in a significant improvement in the bonding performance of the material.