Ferrocenyl rear earth metal complexe type high-temperature macromolecule magnetic material and preparation method thereof

A technology of high-temperature polymers and magnetic materials, applied in the direction of magnetism of organic materials/organic magnetic materials, can solve the problems of no practical prospect, poor experimental reproducibility, low Curie temperature, etc., and achieve novel design concepts and simple preparation Effect

Inactive Publication Date: 2008-02-13
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the research of organic polymer magnets, although there have been a series of pure organic magnets containing C, H, O, N, S and other atoms, as well as some ferromagnetic magnets designed and synthesized based on nitro radicals and sulfur nitrogen radicals. Compounds have come out, but because of their low Curie temperature (below 100K) and poor experimental reproducibility, there is basically no practical prospect
The metallocene coordination polymer magnet researched by Sichuan Normal University has achieved good results in microwave communication applications, but its structure is still unclear and needs further exploration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1. Under the protection of high-purity nitrogen, add 5 parts of ferrocenyl acylhydrazone polymer (molecular weight is 19,000) and 6 parts of rare earth metal salt LaCl in 150ml reaction tube 3 .nH 2 O, add 60ml of DMSO to make the system homogeneous, stir at 150°C for 6 hours, and end the reaction. Filter, wash the precipitate with boiling water and hot ethanol in turn, and dry at 80° C. for 6 hours under vacuum to obtain the target product. The test results are as follows: the saturation magnetization reaches 0.20emu / g, the coercive force is 59.2Oe, the remanence is 0.004emu / g, and the Curie temperature is 398K.

Embodiment 2

[0018] Embodiment 2. under the protection of high-purity nitrogen, add 4 parts of ferrocenyl acyloxime polymers (molecular weight is 1.2 ten thousand) and 7 parts of rare earth metal salt Ce(NO 3 ) 3 .6H 2 O, add 80ml DMSO again to make the system homogeneous, stir at 150°C for 6 hours, and end the reaction. Filter, wash the precipitate with boiling water and hot ethanol in turn, and dry at 80° C. for 6 hours under vacuum to obtain the target product. The test results are as follows: the saturation magnetization reaches 0.45emu / g, the coercive force is 72.6Oe, the remanence is 0.040emu / g, and the Curie temperature is greater than 400K.

Embodiment 3

[0019] Embodiment 3. under the protection of high-purity nitrogen, add 4 parts of ferrocenyl acylhydrazone polymers (molecular weight is 19,000) and 9 parts of rare earth metal salts Pr(NO 3 ) 3 .6H 2 O, add 70ml of DMF to make the system homogeneous, stir at 130°C for 8 hours, and end the reaction. Filter, wash the precipitate with boiling water and hot ethanol in turn, and dry at 80° C. for 6 hours under vacuum to obtain the target product. The test results are as follows: the saturation magnetization reaches 0.48emu / g, the coercive force is 75.1Oe, the remanence is 0.028emu / g, and the Curie temperature is greater than 400K.

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Abstract

The utility model relates to a high temperature polymer magnetic material. The ferrocene-based polymer forms a three-dimensional atom coordination structure with the rare earth metal atom ligand at the ligand group of the ferrocene-based polymer molecular chain. The utility model is a high temperature polymer magnetic material of ferrocene-based rare earth metal with stable magnetic properties under room temperature. The high temperature polymer magnetic material molecule of the utility model is novel in design and easy in manufacturing. The saturation magnetization of the high temperature polymer magnetic material is up to 0.20-0.48 emu per gram, the coercivity is 59-90 Oe, the remanence is 0.004 emu per gram to 0.040 emu per gram. The inner temperature is above 398K. The utility model discloses the manufacturing method.

Description

technical field [0001] The invention relates to a functional polymer material, in particular to a class of organic polymer magnetic functional materials. Background technique [0002] With the development of society and the advancement of science and technology, ferromagnetic and ferrimagnetic materials have been widely used in various fields such as national defense, high-tech and daily life. However, due to the traditionally used inorganic magnetic materials need to be smelted at high temperature, and because of their own weaknesses such as high density, brittleness, large magnetic loss to high-frequency electromagnetic waves, and difficulty in processing, they are used in high-frequency electromagnetic wave communications and other high-tech applications. The application of technology and cutting-edge technology has been greatly restricted. [0003] At present, many important magnetic organic polymer materials that have been commercially produced are mainly composite mag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F30/04C08G79/00H01F1/42
Inventor 陆云叶孙洁方利林展如薛奇胡汉杰
Owner NANJING UNIV
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