光纤酸性化学镀镍工艺

Technology of Electroless Nickle-plating on Fiber in an Acid Condition

系统研究了石英光纤表面酸性化学镀镍工艺,同时研究了温度、主盐浓度、pH等影响镀层表面形貌的因素.得到石英光纤敏化、活化的最佳温度为35℃.最佳施镀条件为:次磷酸钠浓度为0.2 mol/L,镀液中镍离子与次磷酸钠的质量浓度比为0.35,pH值为4.8,温度为88℃.在优化的工艺条件下,发现光纤施镀前预处理过程中的粗化不是得到连续镀层的必要条件.在未经粗化的石英光纤表面得到了均匀、连续、光亮、细腻、附着力良好的镍镀层,镀层的沉积速率为5.76μm/h.

The surface acid electroless nickle-plating technology on quartz fiber was studied,and the factors affecting the surface appearance of nickle-plating layer were investigated.The research results have shown that the optimum temperature of sensitization and activation for quartz fiber is about 35 ℃.And the optimum plating conditions are as follows： the density of NaH2PO2·H2O is 0.2 mol/L,the proportion of nickle ion in nickle liquid and NaH2PO2·H2O is 0.35,the pH is 4.8,and the plating temperature is 88 ℃.In the conditions of optimized process,it has been found that it is unnecessary to coarsen fiber in the process of prehandle for continuous plating layer.The nickle layer obtained was uniform,continuous,bright and subtle,and has good adhesive force from the quartz fiber without coarsening,and the coating rate is 5.76 μm/h.