丙烷磺酸吡啶嗡盐在高增量厚径比印花镍网电铸中的应用

Application of Pyridinium Propyl Sulfobetaine in Electroforming of Nickel Mesh with High Incremental Aspect Ratio

采用丙烷磺酸吡啶嗡盐(PPS)作为镍网电铸添加剂进行了电铸镍网实验,通过添加丙烷磺酸吡啶嗡盐来提高镍网的增量厚径比和耐折性。线性伏安扫描结果表明,丙烷磺酸吡啶嗡盐的去极化作用与镀液的对流有关,在较小电位的电化学沉积中,在高对流条件下丙烷磺酸吡啶嗡盐的去极化作用比其在低对流条件下更强,导致处于强对流的镍网外侧沿厚度方向镍原子的沉积和处于弱对流的网孔内侧沿径向镍原子沉积速度的差异。最终,在PPS质量浓度为10 mg/L时获得具有高增量厚径比和良好耐折性的镍网。

The electroforming of nickel mesh was performed in Watt bath with different concentration of pyridinium propyl sulfobetaine(PPS)to achieve a higher incremental aspect ratio and better folding resistance.The linear sweep voltammetry demonstrates that the depolarization of PPS is convection related.At more negative potential,the depolarization effect of PPS is stronger under high convection conditions than that under low convection conditions,which results in different deposition of nickel ions along the thickness direction and along diameter direction.The nickel mesh with high incremental aspect ratio and good folding resistance was obtained when the concentration of PPS is 10 mg/L.