通过在已化学镀铜涤纶织物上电沉积非晶态 Ni-Fe-P 合金,制备出一种镀层致密均匀的柔性金属化屏蔽织物.研究和分析了电流密度、温度和 pH值对合金织物方阻值、增重率及屏蔽效能的影响,从而制定出最佳工艺.通过对比腐蚀前后非晶态 Ni-Fe-P合金和非晶态 Ni-P 合金镀层表面形貌、成分和电磁屏蔽效能可以得出,在电流密度为8．7 A/dm2,温度为60℃,pH 值＝1．5的工艺条件下所制备的非晶态 Ni-Fe-P 合金织物结晶更加细化、光亮,致密性和均质性都得以明显提高,并具有良好的耐腐蚀性能,且在300 kHz~1．5 GHz 频率范围内的电磁屏蔽效能达到了69．20~80．30 dB.
A flexible shielding fabric with dense uniform coating was prepared after electrical deposition of amor-phous Ni-Fe-P alloy on copper-coated polyethylene terephthalate (PET)fabric.The effects of alloy fabric ohms per square,weight gain rate and shielding effectiveness were discussed by the current density,temperature and pH value.The morphology and composition of coating of amorphous Ni-Fe-P alloy and amorphous Ni-P alloy were analyzed by SEM and EDS.The EMI shielding effectiveness and corrosion resistance were also tested.The results fabric possesses dense,smooth,and uniform coating,when the processing conditions are 60 ℃,pH=1.5,and current density =8.7 A/dm2 .The alloy fabric has excellent of corrosion resistance.The EMI shielding effectiveness of this alloy fabric achieves 69.20-80.30 dB in a broad frequency range between 300 kHz-1.5 GHz.
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