锦纶织物复合化学镀(Ni-P)-Si_3N_4纳米微粒复合镀层

Composite Electroless Plating(Ni-P)-Si_3N_4 Nanoparticle Composite Coating on Polyamide Fabric

采用纳米复合化学镀技术,分别于酸性和碱性镀液中在锦纶织物表面沉积了(Ni-P)-Si3N4复合镀层,对镀层表面形貌、结构和织物热性能进行了表征,并测试了化学镀织物的电磁波屏蔽和耐磨性能。研究结果表明,Si3N4纳米微粒的引入使酸性复合化学镀(Ni-P)-Si3N4镀层无定形态有所增强,碱性复合化学镀(Ni-P)-Si3N4镀层仍保持晶体结构。锦纶织物经过酸性和碱性化学镀Ni-P,以及复合化学镀(Ni-P)-Si3N4之后,热起始分解温度均有所下降。随着Si3N4用量的增加,酸性复合化学镀(Ni-P)-Si3N4织物的屏蔽效能变化不明显,而碱性复合化学镀(Ni-P)-Si3N4织物的屏蔽效能有所增加,但增幅不大。较普通酸性和碱性化学镀Ni-P,酸性和碱性复合化学镀(Ni-P)-Si3N4织物的耐磨性变差。

（Ni-P）-Si3N4 electroless composite coatings were fabricated on polyamide fabrics in acidic and alkaline plating baths.The surface morphology,structure and thermal properties of（Ni-P）-Si3N4 composite coating were determined,and their electromagnetic shielding performance and wear resistance were also investigated.The results showed that with the incorporation of Si3N4 nano particles the composite coating prepared in acidic bath was in amorphous state,whereas the coating in alkaline bath was in crystalline state.After deposited by acidic or alkaline Ni-P coating and（Ni-P）-Si3N4 composite coating,the decomposition temperature of polyamide fabric was decreased.With the increase of Si3N4 nano particles content in the coating,the shielding effect of fabrics plated in acidic bath were almost unchanged,but increased slightly in alkaline bath.Compared with traditional Ni-P electroless coating,the wear resistance of fabrics having（Ni-P）-Si3N4 electroless composite coatings prepared in acidic or alkaline bath was reduced.