Kevlar织物化学镀掺钨镀银层

应用“非刻蚀-无钯活化”法对Kevlar织物进行表面改性,化学镀制备掺钨镀银层。采用多种表征方法测试掺钨镀银层的结构、形貌和成分,分别用四探针法、Na₂S全浸及超声实验研究掺钨镀银层Kevlar织物的导电性能、抗硫变色性能以及银层/纤维结合性能。研究结果表明:纳米尺寸银颗粒均匀镶嵌在Kevlar纤维表层,形成活化中心;随后,均匀且致密的掺钨镀银层被制备,该镀层显示晶态结构,W以WO₃和Ag₂WO₄的形式存在,该镀层呈现优异的导电性能和结合力。与纯银镀层相比,掺钨镀银层具有更优异的抗硫变色性能。

Electroless Plating of Tungsten-doped Silver Coating on Kevlar Fabric

A“Non-etch and Pd-free activation”method was used to modify the Kevlar fabric,then tungsten-doped silver layer was fabricated by electroless plating.Its structure,morphology and composition were characterized by XRD,SEM and XPS.The conductivity,sulfur-resistant color-changing properties and bonding properties of the tungsten-doped silver Kevlar fabric were investigated by the four probe method,Na₂S total immersion and ultrasonic experiments.The results show that the nano-sized silver particles are evenly embedded in the fiber surface acting as the activation center.A uniform and dense tungsten-doped silver layer is formed on the surface of Kevlar fabric,which is a crystalline structure of WO₃ and Ag₂WO₄.Tungsten-doped silver layer still exhibits excellent electrical conductivity and adhesion.Compared to Ag coating,tungsten-doped silver layer possesses better sulfur-resistant discoloration performance.