A kind of elastic electromagnetic shielding film and preparation method thereof
An electromagnetic shielding film and elastic technology, applied in the field of elastic electromagnetic shielding film and its preparation, can solve the problems of poor stability, poor conductivity of electromagnetic shielding film, etc., achieve good stability, maintain electromagnetic shielding performance, and enhance binding force Effect
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Embodiment 1
[0059] This embodiment provides an elastic electromagnetic shielding film, the preparation method of which is as follows.
[0060] (1) Prepare a nickel chloride solution with a concentration of 0.5mol / L, add complexing agent sodium citrate (40mmol / L), nucleating agent chloroplatinic acid (0.25mmol / L), and adjust the pH value by sodium hydroxide solution is 12.0.
[0061] (2) Prepare a 0.5 mol / L hydrazine hydrate solution, and adjust the pH value to 12.0 with sodium hydroxide solution.
[0062] (3) After mixing equal volumes of the solutions prepared in the above steps, place them in a reaction vessel, react at 80° C. for 60 minutes, stop the reaction and wash with deionized water to obtain magnetic nickel nanochains;
[0063] (4) The mass ratio of magnetic nickel nanochains, conductive additive silver nanowires, sodium alginate, and water is 20:5:30:1000 to prepare an electromagnetic shielding function coating liquid;
[0064] (5) Polyurethane elastomer film was selected as ...
Embodiment 2
[0068] This embodiment provides an elastic electromagnetic shielding film, the preparation method of which is as follows.
[0069] (1) Prepare a cobalt chloride solution with a concentration of 1.0mol / L, add complexing agent sodium citrate (50mmol / L), nucleating agent chloroplatinic acid (0.3mmol / L), and adjust the pH value by sodium hydroxide solution is 12.5.
[0070] (2) Prepare 1.0 mol / L hydrazine hydrate solution and adjust the pH value to 12.5 with sodium hydroxide solution.
[0071] (3) Mix equal volumes of the solutions prepared in the above steps and place them in a reaction vessel, react at 50° C. for 30 minutes, stop the reaction and wash with deionized water to obtain magnetic cobalt nanochains.
[0072] (4) The mass ratio of magnetic cobalt nano chains, conductive additive carbon nanotubes, sodium alginate, and water is 15:8:20:1000 to prepare an electromagnetic shielding function coating liquid.
[0073] (5) Select polystyrene-butadiene elastomer film as the st...
Embodiment 3
[0077] This embodiment provides an elastic electromagnetic shielding film, the preparation method of which is as follows.
[0078] (1) preparation concentration is the nickel chloride solution of 0.5mol / L, the cobalt chloride solution of 0.5mol / L, add complexing agent sodium oxalate (60mmol / L), nucleating agent chloroplatinic acid (0.2mmol / L) , the pH was adjusted to 13.0 by potassium hydroxide solution.
[0079] (2) Prepare a 1.0 mol / L hydrazine hydrate solution, and adjust the pH value to 13.0 with potassium hydroxide solution.
[0080] (3) Mix equal volumes of the solutions prepared in the above steps and place them in a reaction vessel, react at 60° C. for 30 minutes, stop the reaction and wash with deionized water to obtain magnetic nickel-cobalt alloy nanochains.
[0081] (4) The magnetic nickel-cobalt alloy nanowires, the conductive additive copper nanowires, sodium alginate, and water are mixed in a mass ratio of 10:3:10:1000 to prepare an electromagnetic shielding fu...
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