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Magnetic material having high magnetic heating performance and preparation thereof

A technology of magnetic material and heating performance, applied in the direction of magnetic material, magnetic object, inorganic material magnetism, etc., can solve the problems of limited practical application, unsatisfactory heating value, etc., and achieve the effect of high magnetocaloric performance

Inactive Publication Date: 2009-07-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of material has a low Curie temperature, its heat generation in a magnetic field is not ideal (SAR is lower than 10W / g), which limits its practical application

Method used

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  • Magnetic material having high magnetic heating performance and preparation thereof
  • Magnetic material having high magnetic heating performance and preparation thereof
  • Magnetic material having high magnetic heating performance and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one: composition is Ni 0.37 PD 0.63 Preparation of Nanomagnetic Materials

[0018] Dissolve 0.7mmol palladium acetate in 10ml 1,4-dioxane, dissolve 0.3mmol nickel sulfate and 0.8g PVP in 120ml ethylene glycol at 80°C, and then add the above palladium acetate solution under ice-water bath conditions , mix, and adjust the pH to 8-12 with 1M NaOH. Then the above mixture was heated to 60-197°C for 3h reaction, and the reaction was carried out in a three-neck flask with a reflux tube, protected by argon and mechanically stirred during the reaction. Heating was stopped after the reaction was completed and cooled to room temperature, at which time the argon flow could be stopped. Add 30ml of acetone and 90ml of ethyl acetate to the obtained black solution and centrifuge to obtain black magnetic nanoparticles, wash twice with ethanol and ethyl acetate, and vacuum freeze-dry to prepare NiPd nanometer magnetic material. According to the ICP test results, the conten...

Embodiment 2

[0019] Embodiment two: composition is Ni 0.64 PD 0.36 Preparation of Nanomagnetic Materials

[0020] Dissolve 0.3mmol of palladium acetate in 10ml of 1,4-dioxane, dissolve 0.7mmol of nickel sulfate and 0.8g of PVP in 120ml of ethylene glycol at 80°C, and then add the above-mentioned palladium acetate solution under ice-water bath conditions, Mix and adjust pH to 8-12 with 1M NaOH. Then the above mixture was heated to 60-197°C for 3 hours of reaction. The reaction was carried out in a three-necked flask with a reflux tube, protected by argon and mechanically stirred during the reaction. Heating was stopped after the reaction was completed and cooled to room temperature, at which time the argon flow could be stopped. Add 30ml of acetone and 90ml of ethyl acetate to the obtained black solution and centrifuge to obtain black magnetic nano-alloy particles, wash twice with ethanol and ethyl acetate, and vacuum freeze-dry to prepare NiPd magnetic nano-alloys. After the ICP test, ...

Embodiment 3

[0021] Embodiment three: Ni 0.46 Pt 0.54 Preparation of Nanomagnetic Materials

[0022] Dissolve 0.5mmol of platinum chlorate, 0.5mmol of nickel sulfate and 0.8g of PVP in 120ml of ethylene glycol, and adjust the pH value to 10 with 1M NaOH. Then the above mixture was heated to 120-197° C. for 3 hours of reaction. The reaction was carried out in a three-necked flask with a reflux tube, and argon was protected during the reaction and mechanically stirred. Heating was stopped after the reaction was completed and cooled to room temperature, at which time the argon flow could be stopped. Add 30ml of acetone and 90ml of ethyl acetate to the obtained black solution and centrifuge to obtain black magnetic nanoparticles, then wash twice with ethanol and ethyl acetate, and vacuum freeze-dry to prepare NiPt nano-magnetic material. After the ICP test, the content of Ni in its chemical composition is 46 mol%, and the content of Pd is 54 mol%.

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Abstract

The invention relates to a novel magnetic material and a preparation method thereof. The novel magnetic material is a magnetic material which consists of iron group metals and platinum group metals. The preparation method uses a polyol as a reaction solvent and a reducing agent; various metal ions forming the magnetic material are simultaneously reduced from a solution; and the magnetic material is manufactured. The magnetic material is provided with high hysteresis heating property; at the same time, through changing the composition of the magnetic material, Curie temperature of the magnetic material can be adjusted to be close to the physiological temperature of a human body; and the magnetic material has the advantages of little metal dissolving amount and biological safety, and can be applied to cure a tumor through a magnetic-thermo method.

Description

technical field [0001] The invention belongs to the field of biological materials, and relates to a novel magnetic material with adjustable Curie temperature and high calorific value under an alternating magnetic field and a preparation method thereof. The material can be used in the treatment of cancer by magnetothermal methods. Background technique [0002] In recent years, the magnetothermal therapy of tumors, that is, the study of treating tumors with the magnetocaloric effect of magnetocaloric seeds has attracted widespread attention, and it is an effective method for treating tumors. It takes advantage of the different sensitivity of tumor cells and normal cells to heat, injects or implants magnetic materials as hot seeds into tumor tissue, generates heat under the action of an external magnetic field, and then releases the generated heat to tumor tissue, due to tumor The blood supply in tumor cells is not as sufficient as that in normal tissues, resulting in slower he...

Claims

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Application Information

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IPC IPC(8): H01F1/147H01F1/20B22F1/02A61F7/03
Inventor 姚爱华黄文旵艾凡荣王德平周萘
Owner TONGJI UNIV
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