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Magnesium ferrite electrophoresis suspension liquid as well as preparation method thereof and application thereof

An electrophoretic suspension, magnesium ferrite electrolysis technology, applied in electrolytic coatings, coatings, etc., to achieve the effects of simple process, high stability and long aging time

Inactive Publication Date: 2019-04-12
ZHENJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Mg x Fe 3-x o 4 It is a ferrite material, which has great applications in the fields of wave absorption, microwave, etc., but it has not been applied to electrophoretic suspension so far

Method used

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  • Magnesium ferrite electrophoresis suspension liquid as well as preparation method thereof and application thereof
  • Magnesium ferrite electrophoresis suspension liquid as well as preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of magnesium ferrite electrophoretic suspension, described electrophoretic suspension comprises Mg x Fe 3-x o 4 Solid phase, where x=1.

[0027] The MgFe 2 o 4 The mass fraction range of the solid phase in the electrophoretic suspension is 1%.

[0028] A preparation method of magnesium ferrite electrophoretic suspension, comprising the following steps:

[0029] Step 1: Synthesis of MgFe by Chemical Co-precipitation 2 o 4 Powder, the powder particle size is about 30nm;

[0030] Step 2, using acetylacetone as a solvent, at 5°C, MgFe 2 o 4 The powder is dispersed in the above solvent, castor oil is added, and the pH value is adjusted to 5 by glacial acetic acid, and the dispersion is uniform with mechanical stirring and ultrasonic oscillation.

[0031] Among them, the MgFe 2 o 4 The specific preparation steps of the powder are: MgCO 3 and Fe 2 o 3 According to the molar ratio of 1:1, it is mixed and ball milled, dried and calcined at 1200°C for 4 hour...

Embodiment 2

[0040] A magnesium ferrite electrophoretic suspension, the electrophoretic suspension specifically includes Mg x Fe 3-x o 4 Solid phase, where x = 0.8.

[0041] The Mg 0.8 Fe 2.2 o 4 The mass fraction range of the solid phase in the electrophoretic suspension is 5%.

[0042] A preparation method of magnesium ferrite electrophoretic suspension, comprising the following steps:

[0043] Step 1: Synthesis of Mg by Chemical Co-precipitation 0.8 Fe 2.2 o 4 Powder, powder particle size is 100nm;

[0044] The 2nd step, adopt acetylacetone as solvent, under the condition of 30 ℃, Mg 0.8 Fe 2.2 o 4 The powder is dispersed in the above solvent, castor oil is added, and the pH value is adjusted to 5.5 by glacial acetic acid, and the dispersion is uniform with mechanical stirring and ultrasonic oscillation.

[0045] Among them, the Mg 0.8 Fe 2.2 o 4 The specific preparation steps of the powder are: MgCO 3 and Fe 2 o 3 According to the molar ratio of 8:11, it is mixed and...

Embodiment 3

[0054] A magnesium ferrite electrophoretic suspension, the electrophoretic suspension specifically includes Mg x Fe 3-x o 4 Solid phase, where x = 0.5.

[0055] The Mg 0.5 Fe 2.5 o 4 The mass fraction range of the solid phase in the electrophoretic suspension is 10%.

[0056] A preparation method of magnesium ferrite electrophoretic suspension, comprising the following steps:

[0057] Step 1: Synthesis of Mg by Chemical Co-precipitation 0.5 Fe 2.5 o 4 Powder, the powder particle size is about 200nm, such as figure 1 shown;

[0058] The 2nd step, adopt acetylacetone as solvent, under the condition of 45 ℃, Mg 0.5 Fe 2.5 o 4 The powder is dispersed in the above solvent, castor oil is added, and the pH value is adjusted to 6 by glacial acetic acid, and the dispersion is uniform with mechanical stirring and ultrasonic oscillation.

[0059] Among them, Mg 0.5 Fe 2.5 o 4 The specific preparation steps of the powder are: MgCO 3 and Fe 2 o 3 According to the molar ...

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Abstract

The invention discloses magnesium ferrite electrophoresis suspension liquid as well as a preparation method thereof and application thereof. The magnesium ferrite electrophoresis suspension liquid specifically comprises MgxFe(3-x)O4, wherein x is greater than or equal to 0.5 and is smaller than or equal to 1. The magnesium ferrite electrophoresis suspension liquid is prepared through two steps which comprise synthesis of MgxFe(3-x)O4 powder and dispersed suspension of MgxFe(3-x)O4 powder. The magnesium ferrite electrophoresis suspension liquid prepared by the preparation method has positive charge, is complete in diffusion, is long in ageing time, has zeta electric potential higher than 40 mV, and has high stability; and moreover, the preparation process is simple, and cost is low.

Description

technical field [0001] The invention belongs to the technical field of colloid chemistry and electrophoresis, relates to electrophoretic deposition coating technology, in particular to a magnesium ferrite electrophoretic suspension and its preparation method and application. Background technique [0002] Electrophoretic deposition is a widely used material coating preparation technology. Its principle is to pass an electric field into the suspension of charged particles. Under the action of the electric field, the charged particles move to the opposite polarity and deposit on the electrode to form a uniform The thickness of the film layer can be in the range of 0.2 μm to 200 μm. Its advantages include controllable coating thickness, accurate stoichiometric ratio, simple equipment, and not limited by the shape of the substrate. The properties of the electrophoretic suspension, such as stability, are key factors in determining the performance of the coating. Therefore, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00
CPCC25D15/00
Inventor 唐国钢简刚
Owner ZHENJIANG COLLEGE