Modified nano silver powder preparing method

[0017] Example 1

[0018]

[0019] According to the above-mentioned mass percentage, add tert-butyl mercaptan, octadecyl mercaptan, 3-mercaptopropyl triethoxysilane, octadecyl dimethyl benzyl ammonium chloride, dodecyl trimethyl Base ammonium chloride, 4-hydroxybenzotriazole, benzotriazole, dichloromethane and acetone were added to absolute ethanol, under the effect of ultrasonic dispersion with a frequency of 25kHz and a power of 2kW, after stirring for 0.4h, Then add nano-silver powder, and further stir for 6.0h under the effect of ultrasonic dispersion with a frequency of 25kHz and a power of 2kW, and then sequentially go through centrifugal separation, washing with absolute ethanol, centrifugal separation, washing with deionized water, centrifugal separation, vacuum drying, and grinding And the sieving process to prepare modified nano silver powder.

[0020] Example 2

[0021]

[0022]

[0023] According to the above mass percentages, bromide n-butyl mercaptan, phenethyl mercaptan, 3-mercaptopropyltrimethoxysilane, dodecyltrimethylammonium bromide, and tetradecyldimethylpyridine in sequence Ammonium, cetyl dimethyl benzyl ammonium bromide, tolyl benzotriazole, ethylene glycol monoethyl ether, toluene and ethyl acetate are added to absolute ethanol at a frequency of 28kHz and a power of 2.5kW Under the action of ultrasonic dispersion, after stirring for 0.3h, add nano silver powder, and further stir for 5.0h under the action of ultrasonic dispersion with a frequency of 28kHz and a power of 2.5kW, and then go through centrifugal separation, washing with absolute ethanol, centrifugal separation, and removing Ionized water washing, centrifugal separation, vacuum drying, grinding and sieving process to prepare modified nano silver powder.

[0024] Example 3

[0025]

[0026] According to the above mass percentages, sequentially add n-dodecyl mercaptan, n-pentyl mercaptan, 3-mercaptopropyl triethoxy silane, dodecyl dimethyl benzyl ammonium chloride, octadecyl tri Methyl ammonium bromide, N-hydroxybenzotriazole, benzotriazole, carbon tetrachloride and methyl ethyl ketone were added to absolute ethanol and stirred for 0.5 under the action of ultrasonic dispersion with a frequency of 60kHz and a power of 3kW After h, add nano-silver powder, and further stir for 4.0h under ultrasonic dispersion with a frequency of 60kHz and a power of 3kW, and then go through centrifugal separation, washing with absolute ethanol, centrifugal separation, washing with deionized water, centrifugal separation, and vacuum The process of drying, grinding and sieving prepares modified nano silver powder.