Method for preparing nano magnetic polymer composite microspheres
A composite microsphere and nanomagnetic technology, which is used in magnetic objects, magnetic materials, electrical components, etc.
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Embodiment 1
[0044] 1) Hydrophilic ultrafine Fe 3 o 4 Preparation of particle dispersion
[0045] Preparation of Fe by Chemical Co-precipitation 3 o 4 The components and parts contained in the particles are:
[0046] FeCl 3 ·6H 2 O 54.04g
[0047] FeCl 2 4H 2 O 19.88g
[0048] Deionized water 1200ml
[0049] Oleic acid 20g
[0050] 25% ammonia water 150ml
[0051] The preparation process is: FeCl 3 ·6H 2 O, FeCl 2 4H 2 Dissolve O in 600ml of deionized water, and add to 2L reactor after dissolving; nitrogen gas is passed under stirring condition, and oleic acid is added; after stirring for 5-10 minutes, 25% ammonia water is added dropwise at room temperature; keep at room temperature for 1 hour, and heat up to 90°C , keep stirring at 90°C for 1 hour; cool down and discharge.
[0052] 2) For the Fe obtained in 1) 3 o 4 Acidification treatment of particle dispersion to prepare hydrophobic ultrafine Fe 3 o 4 Particles, which contain components and parts are:
[0053] Hydr...
Embodiment 2
[0067] 1) Hydrophilic ultrafine Fe 3 o 4 Preparation of particle dispersion
[0068] Preparation of Fe by Chemical Co-precipitation 3 o 4 The components and parts contained in the particles are:
[0069] FeCl 3 ·6H 2 O 54.04g
[0070] FeCl 2 4H 2 O 19.88g
[0071] Deionized water 1200ml
[0072] Oleic acid 20g
[0073] 25% ammonia water 150ml
[0074] The preparation process is: FeCl 3 ·6H 2 O, FeCl 2 4H 2 Dissolve O in 600ml of deionized water, and add to 2L reactor after dissolving; nitrogen gas is passed under stirring condition, and oleic acid is added; after stirring for 5-10 minutes, 25% ammonia water is added dropwise at room temperature; keep at room temperature for 1 hour, and heat up to 90°C , keep stirring at 90°C for 1 hour; cool down and discharge.
[0075] 2) For the Fe obtained in 1) 3 o 4 Acidification treatment of particle dispersion to prepare hydrophobic ultrafine Fe 3 o 4 Particles, which contain components and parts are:
[0076] Hydr...
Embodiment 3
[0090] 1) Hydrophilic ultrafine Fe 3 o 4 Preparation of particle dispersion
[0091] Preparation of Fe by Chemical Co-precipitation 3 o 4 The components and parts contained in the particles are:
[0092] FeCl 3 ·6H 2 O 54.04g
[0093] FeCl 2 4H 2 O 19.88g
[0094] Deionized water 1200ml
[0095] Oleic acid 20g
[0096] 25% ammonia water 150ml
[0097] The preparation process is: FeCl 3 ·6H 2 O, FeCl 2 4H 2 Dissolve O in 600ml of deionized water, and add to 2L reactor after dissolving; nitrogen gas is passed under stirring condition, and oleic acid is added; after stirring for 5-10 minutes, 25% ammonia water is added dropwise at room temperature; keep at room temperature for 1 hour, and heat up to 90°C , keep stirring at 90°C for 1 hour; cool down and discharge.
[0098] 2) For the Fe obtained in 1) 3 o 4 Acidification treatment of particle dispersion to prepare hydrophobic ultrafine Fe 3 o 4 Particles, which contain components and parts are:
[0099] Hydrop...
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