不同金属表面处理对高分子材料与金属连接强度影响

Effect of Metal Surface Treatment on the Bonding Strength between Metal and Polymer Material

分别利用喷砂、氢氧化钠阳极氧化和激光毛化3种方法对钛合金板进行了表面处理,通过提高其表面粗糙度,来达到提高相应金属–高分子连接件连接强度的目的。其中激光毛化处理能有效提高相应连接件的拉伸性能,而氢氧化钠阳极氧化处理可以有效提高连接件的剥离强度。综合这两种处理方法所制备的金属–高分子连接件的连接强度得到明显提高,拉伸强度为322 MPa,断裂伸长率为5.1%,剥离强度为4.70 N/cm。

The surface treatment of titanium alloy plate was effectively increased by sand-blasting technology,anodic oxidation by using sodium hydroxide and laser texturing technology, which could improve the bonding strength of the corresponding metal-polymer bonding products. The laser texturing treatment could effectively improve the tensile properties of the products,while the anodic oxidation by using sodium hydroxide could effectively improve the peel strength of the products. When the titanium alloy plate is pretreated by laser texturing technology combined with anodic oxidation, both the tensile strength and the peel strength of the corresponding product could be improved, the tensile strength is 322 MPa, the elongation at break is 5.1%, and the peel strength is 4.70 N/cm.