Method for preparing super-hydrophobic nano-magnetic thin film
A nano-magnetic and super-hydrophobic technology, applied in the direction of the magnetic layer, can solve the problems of limiting the application range of super-hydrophobic nano-magnetic materials, high process requirements, and high cost, and achieve excellent super-hydrophobic performance, broad application prospects, and preparation process. simple effect
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[0024] Example one:
[0025] 1. Preparation of nano iron oxide-silica core-shell particles
[0026] 1.5g γ-Fe 2 O 3 Put it into a three-necked flask, then add 25mL ammonia, 200mL absolute ethanol and 50mL distilled water, ultrasonic dispersion for 10 minutes, then add 5mL ethyl orthosilicate, at 30 ℃, stirring reaction for 12 hours, washing and centrifugation 3 to 5 times , And then dried at 100 ℃ for 3 hours to prepare nano γ-Fe 2 O 3 -Silica core-shell nano particles.
[0027] 2. For nano γ-Fe 2 O 3 -Silica core-shell particles for surface modification
[0028] Weigh the above-mentioned nano γ-Fe 2 O 3 -Disperse 1g of silica core-shell particles in 100mL of absolute ethanol, then add 10mL of vinyltriethoxysilane and 10mL of ammonia, react at 30°C for 24 hours, then centrifuge and dry to obtain a vinyl surface Modified Nano γ-Fe 2 O 3 -Silica core shell particles.
[0029] 3. Preparation of Nano γ-Fe 2 O 3 -Silica-polystyrene composite
[0030] Nano γ-Fe whose surface is modified by v...
Example Embodiment
[0036] Embodiment two:
[0037] 1. Preparation of nano iron oxide-silica core-shell particles
[0038] 1g Fe 3 O 4 Put it into a three-necked flask, then add 20mL ammonia, 150mL absolute ethanol and 40mL distilled water, ultrasonic dispersion for 10 minutes, then add 4mL ethyl orthosilicate, 25 ℃, stirring reaction for 15 hours, washing and centrifugation 3 times, finally Dry at 100°C for 3 hours to prepare nano-Fe 3 O 4 -Silica core shell particles.
[0039] 2. For nano Fe 3 O 4 -Silica core-shell particles for surface modification
[0040] Weigh the above nano Fe 3 O 4 -Disperse 1g of silica core-shell particles in 120mL of absolute ethanol, then add 10mL of vinyltriethoxysilane and 10mL of ammonia, react at 25°C for 24 hours, then centrifuge and dry to obtain a vinyl surface Modified Nano Fe 3 O 4 -Silica core shell particles.
[0041] 3. Preparation of nano-iron oxide-silica-polystyrene composite material
[0042] Nano Fe whose surface is modified by vinyl 3 O 4 -Disperse 1g of sil...
Example Embodiment
[0045] Embodiment three:
[0046] 1. Preparation of nano iron oxide-silica core-shell particles
[0047] 1g γ-Fe 2 O 3 Put it into a three-necked flask, then add 20mL ammonia, 150mL absolute ethanol and 40mL distilled water, ultrasonic dispersion for 10 minutes, then add 4mL ethyl orthosilicate, at 30 ℃, stirring reaction for 12 hours, washing and centrifugation 3 times, finally Dry at 100°C for 3 hours to prepare nano γ-Fe 2 O 3 -Silica core-shell nano particles.
[0048] 2. Surface modification of nano iron oxide-silica core-shell particles
[0049] Weigh the above-mentioned nano γ-Fe 2 O 3 -Disperse 1g of silica core-shell nanoparticles in 120mL of absolute ethanol, then add 12mL of 3-(methacryloyloxy)propyltrimethoxysilane and 10mL of ammonia, react at 30°C for 24 hours, and then centrifuge. And drying to get the surface modified nano-γ-Fe 2 O 3 -Silica core-shell nano particles.
[0050] 3. Preparation of nano-iron oxide-silica-polystyrene composite material
[0051] Nano γ-Fe who...
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