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Nano attapulgite/nano ferrite composite material and preparation method thereof

A technology of nano-attapulgite and nano-ferrite, which is applied in the field of nano-ferrite composite materials and its preparation, can solve the problems of ferrite crystal grain agglomeration, achieve uniform particle size, abundant raw materials, and excellent ion exchange capacity Effect

Active Publication Date: 2013-01-16
CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a nano-attapulgite / nano-ferrite composite material and a preparation method thereof in order to solve the problem of agglomeration between ferrite crystal grains existing in the background technology

Method used

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  • Nano attapulgite/nano ferrite composite material and preparation method thereof
  • Nano attapulgite/nano ferrite composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) x is 0, and the molecular formula of nanoferrite is BaMnMgFe 16 o 27 . Using the co-precipitation method, first the raw material 0.005mol of BaCl 2 2H 2 O, 0.005mol of MnCl 2 2H 2 O, 0.005mol of MgCl 2 ·6H 2 O and 0.08mol FeCl 3 ·6H 2 O add NaOH-Na 2 CO 3 In the buffer solution, let it stand for precipitation, where n(BaCl 2 2H 2 O): n(MnCl 2 2H 2 O): n(MgCl 2 ·6H 2 O): n(FeCl 3 ·6H 2 (0)=1:1:1:16, then the precipitate is transferred to a beaker, washed with water, filtered and dried to obtain the original nano-ferrite powder;

[0020] (2) Add 0.1 g of water-soluble polymer silane coupling agent dropwise to 100 g of deionized water, adjust the pH value of the system to 4 with a hydrochloric acid solution with a mass percent content of 5%, and obtain a water-soluble polymer silane coupling agent. Then add 1 gram of nano-attapulgite, heat up to 60°C, then add 4 grams of nano-ferrite raw powder prepared in step (1), keep stirring for 1 hour, vacuum f...

Embodiment 2

[0023] (1) x is 0.2, and the molecular formula of nanoferrite is BaMnMgAl 0.2 Fe 15.8 o 27 . Using the co-precipitation method, first the raw material 0.005mol of BaCl 2 2H 2 O, 0.005mol of MnCl 2 2H 2 O, 0.005mol of MgCl 2 ·6H 2 O, 0.079mol of FeCl 3 ·6H 2 O and 0.001mol of AlCl 3 Add NaOH-Na 2 CO 3 In the buffer solution, let it stand for precipitation, where n(BaCl 2 2H 2 O): n(MnCl 2 2H 2 O): n(MgCl 2 ·6H 2 O): n(AlCl 3 ): n(FeCl 3 ·6H 2 (0)=1:1:1:0.2:15.8, then the precipitate is transferred to a beaker, washed with water, filtered and dried to obtain the original powder of nano-ferrite;

[0024] (2) Add 0.2 g of water-soluble polymer silane coupling agent dropwise to 100 g of deionized water, and adjust the pH of the system to 5 with a hydrochloric acid solution with a mass percent content of 10%, to obtain a water-soluble polymer silane coupling agent. Then add 3 grams of nano-attapulgite, then add 7.5 grams of nano-ferrite raw powder prepared in s...

Embodiment 3

[0027] (1) x is 0.4, and the molecular formula of nanoferrite is BaMnMgAl 0.4 Fe 15.6 o 27 . Using the co-precipitation method, first the raw material 0.005mol of BaCl 2 2H 2 O, 0.005mol of MnCl 2 2H 2 O, 0.005mol of MgCl 2 ·6H 2 O, 0.078mol of FeCl 3 ·6H 2O and 0.002mol of AlCl 3 Add NaOH-Na 2 CO 3 In the buffer solution, let it stand for precipitation, where n(BaCl 2 2H 2 O): n(MnCl 2 2H 2 O): n(MgCl 2 ·6H 2 O): n(AlCl 3 ): n(FeCl 3 ·6H 2 (0)=1:1:1:0.4:15.6, then the precipitate is transferred to a beaker, washed with water, filtered and dried to obtain the original nano-ferrite powder;

[0028] (2) Add 0.3 grams of water-soluble polymer silane coupling agent dropwise to 100 grams of deionized water, adjust the pH of the system to 5 with a hydrochloric acid solution with a mass percentage of 15%, and obtain a water-soluble polymer silane coupling agent. Then add 6 grams of nano-attapulgite, heat up to 90°C, then add 6 grams of nano-ferrite raw powder pr...

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Abstract

The invention discloses a nano attapulgite / nano ferrite composite material and a preparation method thereof, belonging to the field of nano composite materials. The nano attapulgite / nano ferrite composite material comprises the components by weight: 20-50% of nano attapulgite and 50-80% of nano ferrite. The preparation method comprises the steps of: firstly, preparing nano ferrite raw powder by a coprecipitation method; and then adding the obtained nano-ferrite raw powder into a nano attapulgite water solution, dispersing, washing, drying and roasting. The nano attapulgite exists in the composite material, so that the dispersing performance and the stability of the nano ferrite can be improved, and the roasted nano ferrite crystal particles are good in dispersity and even in particle size.

Description

technical field [0001] The invention relates to a nano-ferrite composite material and a preparation method thereof, in particular to a nano-attapulgite / nanometer ferrite composite material and a preparation method thereof. Background technique [0002] Ferrite materials are mainly used in various fields such as magnetic recording, microwave absorption, magnetic separation, and electronic components, and are indispensable basic functional materials in industrial production. Patent ZL 200510127337.X discloses a preparation method of nano-ferrite powder, which uses crystal water in raw materials to form a slurry by mixing and grinding, and obtains ferrite powder after washing, suction filtration, drying and calcination. However, due to the problem of agglomeration among the synthesized ferrite particles, it is necessary to add some additives to the single ferrite powder for compound modification, so as to solve or reduce the problem of agglomeration between ferrite grains . ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622
Inventor 张宇戚湧
Owner CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH
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