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Barium ferrite-iron powder composite wave absorbing material with low density

A composite absorbing material, barium ferrite technology, applied in electrical components, other chemical processes, magnetic field/electric field shielding, etc. Iron powder composite materials and other issues, to achieve the effect of good microwave absorption performance

Inactive Publication Date: 2019-09-20
韦玉伍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a low-density barium ferrite-iron powder composite absorbing material, which solves the problem that the density of barium ferrite and metal iron powder is relatively large, which is not conducive to the preparation of Technical Problems of Lightweight Barium Ferrite-Iron Powder Composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Weigh the citric acid (C) of 192g 6 h 8 o 7 ·H 2 O) was dissolved in 20mL of deionized water, after the dissolution was complete, 242g of ferric nitrate (Fe(NO 3 ) 3 9H 2 0), the solution color is brown after stirring and dissolving completely;

[0030] (2) At a stirring rate of 180rpm, 16.5g of barium carbonate (BaCO 3 ) into the solution of step (1), after fully stirring and dissolving, a certain amount of ammonia water (NH 3 ·H 2 (0), the pH value of the regulating solution is 4.5;

[0031] (3) Place the solution in step (2) in a water bath at 80° C., and stir for 2 hours at a speed of 180 rpm to allow it to fully react to obtain a uniform colloidal solution;

[0032] (4) the colloidal solution in the step (3), 15g nano iron powder (Fe), 20g3M hollow glass microspheres and 100mL dehydrated alcohol are placed in the stainless steel ball mill container, and the container is built-in the stainless steel bead of 15 10mm, Put it on the ball mill, adjust the ...

Embodiment 2

[0039] (1) Weigh the citric acid (C) of 192g 6 h 8 o 7 ·H 2 O) was dissolved in 20mL of deionized water, after the dissolution was complete, 242g of ferric nitrate (Fe(NO 3 ) 3 9H 2 0), the solution color is brown after stirring and dissolving completely;

[0040] (2) At a stirring rate of 180rpm, 16.5g of barium carbonate (BaCO 3 ) into the solution of step (1), after fully stirring and dissolving, a certain amount of ammonia (NH 3 ·H 2 (0), the pH value of the regulating solution is 6.5;

[0041] (3) Place the solution in step (2) in a water bath at 80° C., and stir for 2 hours at a speed of 180 rpm to allow it to fully react to obtain a uniform colloidal solution;

[0042](4) the colloidal solution in the step (3), 30g nano iron powder (Fe), 30g3M hollow glass microspheres and 100mL dehydrated alcohol are placed in the stainless steel ball mill container, and 15 stainless steel balls of 10mm are built-in in the container, Put it on the ball mill, adjust the ball m...

Embodiment 3

[0049] (1) Weigh the citric acid (C) of 192g 6 h 8 o 7 ·H 2 O) was dissolved in 20mL of deionized water, after the dissolution was complete, 242g of ferric nitrate (Fe(NO 3 ) 3 9H 2 0), the solution color is brown after stirring and dissolving completely;

[0050] (2) At a stirring rate of 180rpm, 16.5g of barium carbonate (BaCO 3 ) into the solution of step (1), after fully stirring and dissolving, a certain amount of ammonia water (NH 3 ·H 2 (0), the pH value of the regulating solution is 5;

[0051] (3) Place the solution in step (2) in a water bath at 80° C., and stir for 2 hours at a speed of 180 rpm to allow it to fully react to obtain a uniform colloidal solution;

[0052] (4) the colloidal solution in the step (3), 20g nano-iron powder (Fe), 25g3M hollow glass microspheres and 100mL dehydrated alcohol are placed in the stainless steel ball mill container, and 15 stainless steel balls of 10mm are built-in in the container, Put it on the ball mill, adjust the b...

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Abstract

The invention relates to the technical field of composite wave absorbing materials, and discloses a barium ferrite-iron powder composite wave absorbing material with low density. The barium ferrite-iron powder composite wave absorbing material comprises, by weight, 242 parts of ferric nitrate (Fe(NO3)3 9H2O), 16.5 parts of barium carbonate (BaCO3), 5-30 parts of nano-iron powder (Fe) and 20-30 parts of hollow glass beads. The lightweight hollow glass beads with good mechanical properties serve as base cores, the nano-iron powder (Fe) and barium ferrites (BaFe12O19) are evenly loaded to the surfaces of the hollow glass beads according to a chemical plating method and a sol-gel coating method, and the lightweight barium ferrite-iron powder composite wave absorbing material with good wave absorbing properties is obtained by a hot press sintering step. The technical problem that high density of the barium ferrites and the metal iron powder is disadvantageous for preparation of the lightweight barium ferrite-iron powder composite material is solved.

Description

technical field [0001] The invention relates to the technical field of composite wave-absorbing materials, in particular to a low-density barium ferrite-iron powder composite wave-absorbing material. Background technique [0002] With the rapid development of radio communication technology, more and more electronic products and equipment provide great convenience and help for people's daily life and social construction. At the same time, the electromagnetic radiation and electromagnetic wave interference generated by these electronic products and equipment will not only affect the normal communication of human beings, but also lead to the deterioration of the electromagnetic environment in the living space of human beings, seriously affecting human production and quality of life. , and even directly threaten human health. Therefore, the control of electromagnetic radiation pollution, the surface coating to resist and weaken the material of electromagnetic radiation - absorb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00H05K9/00
CPCC09K3/00H05K9/0081
Inventor 韦玉伍
Owner 韦玉伍