A kind of flexible liquid metal copper-clad conductive paste for rfid antenna
A technology of liquid metal and conductive paste, applied to antennas, conductive materials dispersed in non-conductive inorganic materials, antenna parts, etc., can solve the problems that are difficult to meet the wearable requirements of RFID electronic tags, and achieve reliable The effect of sexual satisfaction
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Embodiment 1
[0029] Preparation of dispersion-type curing agent: 10g of expanded graphite powder was ultrasonically cleaned with analytical pure ethanol for 15min, deionized water for 30min, dried and crushed, added to 40g of methanol, stirred and dispersed for 30min, and then added with 15g of trimethylphenylsilane, 20g of catechol and 15g of benzylamine were heated and boiled for 15min, filtered, washed with cold methanol, and pulverized to obtain a dispersion-type curing agent.
[0030] Preparation of liquid metal copper-clad powder: 25g of flake copper powder in 3% H 2 SO 4 Stir and soak in the aqueous solution at room temperature for 15 minutes, rinse with water, add to 30g 65°C gallium indium tin liquid metal solution and stir for 30min to obtain slurry A; add 5g of linoleic acid amide to 40g of deionized water and stir for 10min to obtain solution B; Slurry A was added into the stirred solution B, stirred for 40 minutes, and blown dry to obtain gallium indium tin liquid metal coppe...
Embodiment 2
[0039] Preparation of dispersion-type curing agent: 20g of expanded graphite powder was ultrasonically cleaned with analytical pure ethanol for 30min, deionized water for 15min, dried and pulverized, added to 30g of methanol, stirred and dispersed for 30min, and then added with 20g of trimethylphenylsilane, 20g catechol, 10g benzylamine, heated and boiled for 30min, filtered, washed with cold methanol, crushed to obtain a dispersed curing agent.
[0040] Preparation of liquid metal copper-clad powder: 35g of flake copper powder in 5% H 2 SO 4 Stir and soak in the aqueous solution at room temperature for 10 minutes, rinse with water, add to 17g of 75°C gallium-zinc liquid metal solution and stir for 20 minutes to obtain slurry A; add 3g of sodium dodecylbenzenesulfonate to 45g of deionized water and stir for 15 minutes to obtain a solution B: Add the slurry A into the stirred solution B, stir for 60 minutes, and blow dry to obtain gallium-zinc liquid metal copper-coated powder...
Embodiment 3
[0049] Preparation of dispersion-type curing agent: 25g of expanded graphite powder was ultrasonically cleaned with analytical pure ethanol for 20min, deionized water for 20min, dried and pulverized, added to 35g of methanol, stirred and dispersed for 30min, and then added with 18g of trimethylphenylsilane, 20g catechol, 12g benzylamine, heated and boiled for 20min, filtered, washed with cold methanol, crushed to obtain a dispersed curing agent.
[0050] Preparation of liquid metal copper-clad powder: 40g flake copper powder was mixed with 4% H 2 SO 4 Stir and soak in the aqueous solution at room temperature for 12 minutes, rinse with water, add to 20g 85°C gallium-zinc-bismuth liquid metal solution and stir for 20min to obtain slurry A; add 4g of stearic acid to 36g of deionized water and stir for 15min to obtain solution B; Slurry A was added into the stirred solution B, stirred for 60 minutes, and blown dry to obtain gallium zinc bismuth liquid metal copper-clad powder.
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