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Metalized fabric is not only in electromagnetic shielding, antistatic, anti-ultraviolet, Antibacterial Application may also be applied in the endothermic heat-accumulating material, shading and energy saving curtains, infrared reflective material, radar reflective material. Direct metallization of the surface of the fabric there are still a lot of problems: (1) heavy metal activator PdCl2 expensive; (2) electroless plating treatment process is cumbersome and difficult to control; (3) a combination of the coating and fabric fastness. This article explores the fabric pretreatment processes, improve the binding properties of the metal coating fabric matrix, no palladium activation of electroless plating process, through activation - to restore the one-step deposited on the surface of the nylon fabric uniform the Ag conductive layer, while the exploration of the preparation of Ag- Ni two-layer fabric plated optimum conditions. First, the nylon fabric chemical plating pretreatment conditions including polyaniline (PANI) layer preparation conditions of prefabricated, sensitizer concentration, temperature sensitization, sensitization time square resistance of electroless plating Ag fabric, metal deposition rate and coating fabric the impact of the binding capacity of the system, and come to the best pretreatment conditions: aniline hydrochloride salt concentration 0.5mol / L, impregnated aniline hydrochloride time 60min, the concentration of ammonium persulfate 0.2mol / L, oxidation liquid handling about time 5s; SnCl2 10g / L, a sensitizing temperature 35 ° C, the sensitization time 10min. By SEM, AFM precast PANI layer of nylon fabric morphology observation and analysis, and also study its thermal stability, washability and abrasion performance. Followed by palladium activation activation - reduction step in the electroless plating process, metal Ag deposition in precast PANI layer of nylon fabric surface, the first discussion of the various factors that affect chemical plating Ag (main salt concentration of the reducing agent, complexing concentration, temperature, time, ultrasound power etc.) on the electroless plating Ag fabric square resistance, the impact of the metal deposition rate and binding fastness; orthogonal design, ultimately come to the best chemical Ag plating conditions: of AgNO3 14g / L of C6H12O6 2.8g / L NaOH 9g / L NH4OH 100 mL of / L, ultrasonic power 100W, temperature 30 ℃, time 50min. Compare the apparent Ag-plated fabric with PANI prefabricated layer under chemical and corrosion-resistant, washable, abrasion performance results show that, due to the the PANI conductivity and structure in the N and metal ligand complexation Metal Ag Growth in the surface thereof more compact, and fabric combination of good fastness and better conductive properties; Ag plating fabric having a PANI layer chemical corrosion-resistant, washable, abrasion, and significantly improve the performance of electromagnetic shielding. Finally, on the basis of the above without palladium activation process, step-by-step deposition prepared Ag-Ni double gold-plated case fabric of electroless Ni discussed various factors (the main salt concentration of the reducing agent, complexing agent concentration, temperature, time, etc.) on the weight gain rate of the fabric and the double layer of Ag-Ni plated fabric square resistance, the final draw the best chemical Ni plating conditions: of NiSO4 24g / L of NaH2PO2 26g / L, and Na3C6H5O7 20g / L of H3BO3 26g / L, T 65 ℃, t 40min. SEM, AFM, XPS, VSM, TG discussed the structure and properties of the Ni plating, chemical plating Ag fabric chemical and corrosion resistance, abrasion and washing performance analysis means results show that the Ag-Ni double plated fabric has certain resistance to corrosion, abrasion and washing performance. The experiments show that at the same time, different electrical and magnetic properties can be obtained by adjusting AgNO3 concentration and NiSO4 concentration Ag-Ni double layer plating fabric.
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