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Preparation method of spherical nano magnesium oxide

A nano-magnesium oxide, spherical technology, applied in the field of nano-materials, can solve the problems of low filling degree of fillers and high production cost, and achieve the effects of low cost, large output and no agglomeration

Pending Publication Date: 2022-05-13
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of high production cost and low filler filling in actual production. The method has simple process, low raw material price and is environmentally friendly

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0021] A kind of preparation method of spherical nano magnesium oxide powder of the present invention, specifically implement according to the following steps:

[0022] S1: Magnesium acetate ethanol solution preparation, magnesium acetate tetrahydrate and CTAB were dissolved in ethanol to obtain magnesium acetate ethanol solution; oxalic acid was dissolved in deionized water to obtain oxalic acid solution;

[0023] S2: Place the ethanol solution prepared in S1 in an ultrasonic environment, and keep stirring, slowly add oxalic acid solution until a white solution is formed;

[0024] S3: Take out the white solution in S2, put it into a magnetic constant temperature stirrer, and keep it warm at a water bath temperature of 60°C for 2 hours; after the end, cool down naturally, and use deionized water and ethanol to centrifuge several times;

[0025] S4: The centrifuged product of S3 was placed in a forced air drying oven, dried at 80°C for 12h, and calcined in a muffle furnace at 5...

Embodiment 1

[0032] The preparation method of a kind of spherical nano magnesium oxide of present embodiment, concrete preparation process is:

[0033] Using magnesium acetate tetrahydrate as raw material, use 20ml of absolute ethanol to prepare a solution with a concentration of 2.5mol / L, add 1.0% CTAB to dissolve in the solution; then prepare a 1mol / L oxalic acid solution (3.78g / 30ml deionized water) ; Place the prepared ethanol solution in an ultrasonic environment, and keep stirring, slowly add oxalic acid solution until a white solution is formed; put the prepared white solution in a magnetic constant temperature stirrer, and keep it in a water bath for 2 hours at a temperature of 70°C ;Take out the reacted solution, cool down naturally, centrifuge 3 times with deionized water, and then centrifuge once with absolute ethanol to obtain a white magnesium oxalate precursor; place the precursor in a blast drying oven, and set the temperature to 80 ℃, dried for 12 hours; the dried sample wa...

Embodiment 2

[0035] The preparation method of a kind of spherical nano magnesium oxide of present embodiment, concrete preparation process is:

[0036] Using magnesium acetate tetrahydrate as raw material, use 20ml of absolute ethanol to prepare a solution with a concentration of 1.5mol / L, add 0.3% CTAB to dissolve in the solution; then prepare a 1mol / L oxalic acid solution (3.78g / 30ml deionized water) ; Place the prepared ethanol solution in an ultrasonic environment, and keep stirring, slowly add oxalic acid solution until a white solution is formed; put the prepared white solution in a magnetic constant temperature stirrer, and keep it in a water bath at 50°C for 2 hours. ;Take out the reacted solution, cool down naturally, centrifuge 3 times with deionized water, and then centrifuge once with absolute ethanol to obtain a white magnesium oxalate precursor; place the precursor in a blast drying oven, and set the temperature to 80 ℃, dried for 12 hours; the dried sample was taken out, cal...

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Abstract

The invention discloses a preparation method of spherical magnesium oxide nano powder, and belongs to the field of nano materials, and the specific process is as follows: taking magnesium acetate tetrahydrate as a magnesium source, preparing a magnesium acetate solution with the concentration of 0.5-2.5 mol / L, and adding 0.1-1.5% of a surfactant; in an ultrasonic environment, slowly adding an oxalic acid solution into the solution, and continuously stirring until a white solution is formed; putting the mixture into a magnetic constant-temperature stirring instrument, and reacting at 30-90 DEG C for 1-3 hours; and centrifuging, drying, calcining in a muffle furnace at 550-650 DEG C, cooling, and taking out to obtain the nano magnesium oxide powder. According to the method provided by the invention, the prepared nano magnesium oxide is spherical, uniform in particle size, good in dispersity and free of agglomeration; and the method is simple to operate, low in raw material price, low in equipment requirement, green and environment-friendly.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a spherical nanometer magnesium oxide powder and a preparation method thereof. Background technique [0002] Molecular materials have excellent performance in terms of chemical corrosion resistance and processing technology, but most of them have poor thermal conductivity, so thermal conductive fillers are usually used in use, and mainly in the inorganic field. The thermal conductive fillers currently used in this field mainly include alumina, Aluminum nitride, boron nitride, magnesium oxide, silicon oxide, etc. Through the analysis of the research status of thermally conductive materials, most thermally conductive composite materials are prepared by filling thermally conductive fillers into the polymer matrix, but there are also defects such as high price, low filling coefficient, and low thermal conductivity. Nanomaterials have the advantages of high specific surface energy,...

Claims

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Application Information

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IPC IPC(8): C01F5/02B82Y40/00
CPCC01F5/02B82Y40/00C01P2004/32C01P2004/64
Inventor 刘世凯王嘉琳宋志健陈颖鑫阮德强上官天天邓浩男胡明远郭丽萍孙亚光
Owner HENAN UNIVERSITY OF TECHNOLOGY
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