目的 优化联氨-氨配合体系化学镀纯镍的工艺条件。 方法 以壳聚糖为织物的预处理剂,通过单因素实验,探讨化学镀镀液各组分的浓度和 pH 值、温度、施镀时间等因素对化学镀纯镍锦纶织物的方阻和增重率的影响。 结果 最优化学镀工艺条件如下:乙酸镍质量浓度 45 g / L,水合肼质量浓度 20 g / L,硫酸铵质量浓度 8 g / L,镀液 pH 值为 9 ,施镀温度为 75 ℃ ,施镀时间为 2 h。 结论 采用此反应体系,锦纶织物经壳聚糖改性处理后,可在最优施镀工艺条件下得到纯镍镀层,且镀层致密,方阻较小。

Objective In this paper, the optimal process conditions of electroless nickel plating in hydrazine-ammonia complex system were studied. Methods With chitosan as a pretreatment agent, the influences of the concentration of each component in the plating bath and the processing conditions were discussed. Results The optimal process conditions were as follows: the concentration of nickel acetate 45 g / L, the concentration of hydrazine hydrate 20 g / L, the concentration of ammonium sulfate 8 g / L, the pH value of bath 9 , the temperature of electroless plating 75 ℃ , the time of electroless plating 2 h. Conclusion In this reaction system, polyamide fiber modified by chitosan can obtain thick and firm adherence electroless pure nickel coating, and lower square resistance, under the optimal technological conditions.