SU649657A1 - Method of obtaining ferromagnetic liquid - Google Patents
Method of obtaining ferromagnetic liquidInfo
- Publication number
- SU649657A1 SU649657A1 SU762398078A SU2398078A SU649657A1 SU 649657 A1 SU649657 A1 SU 649657A1 SU 762398078 A SU762398078 A SU 762398078A SU 2398078 A SU2398078 A SU 2398078A SU 649657 A1 SU649657 A1 SU 649657A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ferromagnetic liquid
- mixture
- magnetite
- obtaining ferromagnetic
- obtaining
- Prior art date
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- Lubricants (AREA)
Description
Смесь водных растворов солей двух- и трехвалентного железа грзппы сульфатов и хлоэидов в мол рном соотношении 1 : 2 ввод т при температуре окружающей среды и перемешиванин в раствор аммиака, вз того с избытком. Образовавшуюс смесь отстаивают 1,5-2 ч и декантируют жидкость , иосле чего дл иокрыти частиц Fe .04 ввод т ПАВ - олеиновую кислоту в количестве от 1,0 до 20 вес. % от веса Рез04, затем дл экстракции частиц магнетита , покрытых ПАВ, в углеводородную среду ввод т керосин из расчета 1 см керосина на 1,0-1,5 г магнетита, смесь перемешивают и нагревают дл разложени аммонированного ПАВ (70-100° С). Образовавшуюс углеводородную суспензию коллоидных частиц магнетита отдел ют, например, остаиванием от водной фазы.A mixture of aqueous solutions of salts of bivalent and trivalent iron groups of sulfates and chloids in a molar ratio of 1: 2 is introduced at ambient temperature and mixed in an ammonia solution, taken with excess. The resulting mixture is settled for 1.5-2 hours and the liquid is decanted, and then surfactant - oleic acid in an amount of from 1.0 to 20 wt. % by weight of Res04, then for the extraction of magnetite particles coated with surfactant, kerosene is introduced into the hydrocarbon medium at a rate of 1 cm of kerosene per 1.0-1.5 g of magnetite, the mixture is stirred and heated to decompose the ammoniated surfactant (70-100 ° C ). The resulting hydrocarbon suspension of magnetite colloidal particles is separated, for example, by separation from the aqueous phase.
Приме р. Берут 56 г сернокислого закисного железа FeSO4 7Н2О, раствор ют в 1,5 л воды, и 111-хлорного железа РеС1з бНзО, раствор ют в 1,5 л воды. Полученные растворы смешивают при температуре окружающей среды и эту смесь ввод т в 300 мл (избыток Nn4 ОН составл ет 27% от эквимол рного количества раствора аммиака) 25%-ного раствора аммиака . Полученную смесь иеремешивают и отстаивают в течение 1,5 /, жидкость иад осадком сливают в количестве 2,3 л, что составл ет 70% маточного раствора, а в оставшуюс водную суспензию частиц магнетита ввод т 15 мл олеиновой кислоты и 70 мл керосина. Полученную реакциониуО массу нагревают до 80° С ири периодическом переглешивании. При этом ироисходит образование двух фаз - водной (состо щей из кепрореагировавших солей и продуктов реакции- частиц магнетита, ие покрытых ПАВ) и углеводородной дисперсии частиц .магнетита, покрытых олеиновой кислотой в керосине. Затем углеводородную фазу отдел ют и из нее выиаривают остатки воды при .Primer p. 56 g of ferrous sulphate FeSO4 7H2O are taken, dissolved in 1.5 l of water, and 111-chloric iron FeCl 3 bNzO, dissolved in 1.5 l of water. The resulting solutions are mixed at ambient temperature and this mixture is introduced into 300 ml (an excess of Nn4 OH is 27% of an equimolar amount of ammonia solution) of a 25% ammonia solution. The mixture obtained is stirred and settled for 1.5 /, the liquid is drained in an amount of 2.3 liters, which is 70% of the mother liquor, and 15 ml of oleic acid and 70 ml of kerosene are added to the remaining aqueous suspension of magnetite particles. The resulting reaction mixture is heated to 80 ° C and periodically pereleshivanii. In this case, the formation of two phases — water (consisting of co-reacted salts and reaction products — magnetite particles, not covered with surfactants) and hydrocarbon dispersion of magnetite particles, coated with oleic acid in kerosene — takes place. The hydrocarbon phase is then separated and the remaining water is extracted from it at.
Полученна ФМЖ (ферромагнитна жидкость) обладает следующими физикохимическими свойствам : намагниченность - 850 Гс; плотность - 1,83 г/см. Количество магнетита, перешедшего в ФМЖ, составл ет 95% по отношению ко всему полученному магнетиту.The resulting FMF (ferromagnetic fluid) has the following physicochemical properties: magnetization - 850 Gs; density - 1.83 g / cm. The amount of magnetite transferred to FMF is 95% of the total magnetite produced.
Предложенный способ позвол ет упростить технологию получени ФМЖ, так как исключаетс необходимость тщательного и быстрого перемешивани смеси растворов солей железа с раствором аммиака и экономитс олеинова кислота («10%).The proposed method makes it possible to simplify the technology of obtaining FMF, since it eliminates the need for thorough and rapid mixing of the mixture of solutions of iron salts with ammonia solution and saves oleic acid ("10%).
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762398078A SU649657A1 (en) | 1976-09-03 | 1976-09-03 | Method of obtaining ferromagnetic liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762398078A SU649657A1 (en) | 1976-09-03 | 1976-09-03 | Method of obtaining ferromagnetic liquid |
Publications (1)
Publication Number | Publication Date |
---|---|
SU649657A1 true SU649657A1 (en) | 1979-02-28 |
Family
ID=20674744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762398078A SU649657A1 (en) | 1976-09-03 | 1976-09-03 | Method of obtaining ferromagnetic liquid |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU649657A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664841A (en) * | 1981-02-27 | 1987-05-12 | Ricoh Co., Ltd. | Fine particle substance-containing non-aqueous dispersions |
FR2606419A1 (en) * | 1986-11-07 | 1988-05-13 | Commissariat Energie Atomique | METHOD FOR MANUFACTURING FERROMAGNETIC COMPOSITION, FERROMAGNETIC LIQUID CRYSTAL OBTAINED BY THIS PROCESS AND DEVICE USING THE LIQUID CRYSTAL |
US4846988A (en) * | 1983-11-11 | 1989-07-11 | Skjeltorp Arne T | Method and device for bringing bodies immersed in liquid to form regular structural patterns |
-
1976
- 1976-09-03 SU SU762398078A patent/SU649657A1/en active
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664841A (en) * | 1981-02-27 | 1987-05-12 | Ricoh Co., Ltd. | Fine particle substance-containing non-aqueous dispersions |
US4846988A (en) * | 1983-11-11 | 1989-07-11 | Skjeltorp Arne T | Method and device for bringing bodies immersed in liquid to form regular structural patterns |
FR2606419A1 (en) * | 1986-11-07 | 1988-05-13 | Commissariat Energie Atomique | METHOD FOR MANUFACTURING FERROMAGNETIC COMPOSITION, FERROMAGNETIC LIQUID CRYSTAL OBTAINED BY THIS PROCESS AND DEVICE USING THE LIQUID CRYSTAL |
US4946623A (en) * | 1986-11-07 | 1990-08-07 | Commissariat A L'energie Atomique | Process for the production of a ferromagnetic composition, ferromagnetic liquid crystal obtained by this process and apparatus using said liquid crystal |
US5049307A (en) * | 1986-11-07 | 1991-09-17 | Commissariat A L'energie Atomique | Process for the production of a ferromagnetic composition, ferromagnetic liquid crystal obtained by this process and apparatus using said liquid crystal |
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