涤纶织物的铜镍无钯化学镀工艺研究

摘要

采用高温热氧化还原方法对涤纶织物进行无钯活化，并在涤纶织物表面进行化学镀铜镍合金，分析了活化和化学镀工艺中主要因素对镀速的影响。结果表明，铜镍织物无钯高温活化工艺条件为：m[NaH2PO2（g）]∶m[Ni（Ac）2（g）]∶V[CH3OH （mL）]=1∶1∶30，浸渍时间3 min，活化温度205℃，活化时间10 min。铜镍织物的化学镀工艺条件为：硼酸0.4 mol/L，次亚磷酸钠0.5 mol/L，聚乙二醇100 mg/L，柠檬酸钠0.08 mol/L，硫酸镍0.04 mol/L，硫酸铜0.08 mol/L，镀覆温度90℃，镀覆时间30 min，pH=9.5。涤纶织物表面得到了较好的铜镍合金镀层，电阻值为11.9Ω/sq。%Polyethylene terephthalate (PET) fabrics were pal adium- free activated by high temperature thermal oxidation reduction method. Electroless plating of copper- nickel on the surface of polyester fabric was carried out, and the influences of the main factors during the activation and electroless plating process on the plating rate were analyzed. The results showed that the optimal parameters of activation process were: m [NaH2PO2(g)]∶m[Ni(Ac)2(g)]∶V[CH3OH(mL)]=1∶1∶30, the fabric was immersed in an active solution for 3 min, then was cured at 205 ℃ for 10 min. The optimal parameters of electro- less plating process were: boric acid 0.4 mol/L, sodium hypophosphite 0.5 mol/L, polyethylene glycol 100 mg/L, sodium citrate 0.08 mol/L, nickel sulfate 0.04 mol/L, cupric sulfate 0.08 mol/L, pH=9.5, plating at 90 ℃ for 30 min. A good copper nickel al oy coating on the surface of polyester fabric was obtained and the resistance value was 11.9Ω/sq.