A kind of preparation method of high-purity and high-dispersion nano-magnesia material

A nano-magnesium oxide, high-dispersity technology, applied in the field of material processing, can solve the problems of poor performance of nano-materials, poor purity, easy to agglomerate, etc., and achieve the effects of high dispersibility, wide source of raw materials, and simple preparation process.

Active Publication Date: 2018-11-02
湛江市中诚电热材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the prior art, the main problem of the existing preparation of nano-magnesia nanomaterials is that it is prone to agglomeration and poor purity, which leads to the deterioration of the performance of nanomaterials and is not conducive to the technical defects of the promotion and utilization of nano-magnesia. The present invention proposes a A preparation method of a high-purity and high-dispersibility nano-magnesia material, using magnesium sulfate, dispersing emulsifier, magnesium oxide quantum dots, and ammonia water as raw materials, dispersing and spraying in a high-pressure homogenizer, and simultaneously using laser sintering to obtain high dispersion , high-purity nano-magnesium oxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Take concentrated sulfuric acid and magnesium sulfate according to the mass ratio of 5:1, the concentration of concentrated sulfuric acid is 70%, wash the magnesium sulfate with concentrated sulfuric acid, rinse with deionized water after filtration, use a vacuum dryer to control the vacuum The temperature is 1 KPa, the temperature of the drying chamber is 100°C, and the purified magnesium sulfate raw material is obtained by drying.

[0031] (2) According to the mass ratio of 5:0.1:4.1:60, the purified magnesium sulfate raw material, sodium dodecylsulfonate, high-purity magnesium oxide particles with a particle size of 10nm and ammonia water with a mass concentration of 30% were taken, and the purified The magnesium sulfate raw material is mixed with paraffin wax, high-purity magnesium oxide particles and ammonia water solvent, dispersed and stirred evenly in a high-pressure homogenizer with an ambient temperature of 200°C, and dispersed to form a primary emulsion; ...

Embodiment 2

[0034] (1) Take concentrated sulfuric acid and magnesium sulfate according to the mass ratio of 10:1, the concentration of concentrated sulfuric acid is 78%, wash the magnesium sulfate with concentrated sulfuric acid, rinse with deionized water after filtration, use a vacuum dryer to control the vacuum The temperature is 2 KPa, the temperature of the drying chamber is 100°C, and the purified magnesium sulfate raw material is obtained by drying.

[0035] (2) According to the mass ratio of 8:0.4:1.3:60, the purified magnesium sulfate raw material, sodium tripolyphosphate, high-purity magnesium oxide particles with a particle size of 40nm and ammonia water with a mass concentration of 37% were taken, and the purified magnesium sulfate raw material was Mix with rosin, high-purity magnesium oxide particles and ammonia solvent, disperse and stir evenly in a high-pressure homogenizer with an ambient temperature of 380°C, and disperse to form a primary emulsion;

[0036] (3) pressuriz...

Embodiment 3

[0038](1) Take concentrated sulfuric acid and magnesium sulfate according to the mass ratio of 8:1, the concentration of concentrated sulfuric acid is 75%, wash the magnesium sulfate with concentrated sulfuric acid, rinse with deionized water after filtration, use a vacuum dryer to control the vacuum The temperature is 5 KPa, the temperature of the drying chamber is 120°C, and the purified magnesium sulfate raw material is obtained by drying.

[0039] (2 Take the purified magnesium sulfate raw material, sodium dodecylsulfonate, high-purity magnesium oxide particles with a particle size of 40nm and ammonia water with a mass concentration of 32% according to the mass ratio of 7:0.3:1.5:40, and the purified sulfuric acid The magnesium raw material is mixed with polyethylene glycol, high-purity magnesium oxide particles and ammonia water solvent, dispersed and stirred evenly in a high-pressure homogenizer with an ambient temperature of 280°C, and dispersed to form a primary emulsio...

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Abstract

The invention discloses a method for preparing a high-purity and high-dispersion nano magnesium oxide material. The method comprises the following steps: taking magnesium sulfate as a raw material, dispersing the magnesium sulfate with a dispersion emulsifier, magnesium oxide quantum points and ammonia water in a high-pressure homogenizer to form an emulsion, performing high-pressure ejection, and at the same time performing laser sintering at a dispersion state. By adopting the method, the technical defects that a nano material is poor in property and popularization and application of nano magnesium oxide are obstructed as a conventional nano magnesium oxide material is easy to agglomerate and relatively poor in purity are solved, and the technical effect that magnesium oxide quantum points as crystal cores grow rapidly in an isotropic manner to form spherical nano magnesium oxide with high dispersity and high purity is achieved. Furthermore, the scheme disclosed by the invention is simple in preparation process, free of pollution and easy in on-scale industrial production.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a preparation method of a high-purity and high-dispersion nano-magnesia material. Background technique [0002] Nanomaterials is one of the fields with better growth in the new material industry, and it is also one of the key industries supported by local governments at all levels. Combined with the current policy support and the development of nanomaterials, it is predicted that the market size of nanomaterials in my country will increase significantly in the next five years, with an average annual growth rate of more than 15%. By 2017, the market size of nanomaterials will exceed 7 billion yuan . At present, there are more than 500 nano-material enterprises in my country. Nano-ceramic materials, nano-textile materials, nano-modified coatings and other materials widely used in nano-powders have also been successfully developed, and industrialized production has been initially ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F5/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01F5/02C01P2004/32C01P2004/51C01P2004/62C01P2004/64C01P2006/80
Inventor 陈庆曾军堂陈兵
Owner 湛江市中诚电热材料有限公司
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