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Preparation method of magnesium-based multifunctional composite particles

A composite particle and functional technology, applied in chemical instruments and methods, dyed low-molecular-weight organic compound treatment, fibrous fillers, etc., can solve problems such as the influence of the surface properties of flame retardants without considering the interface bonding method, and achieve the interface bonding force. Strong, improve the flame retardant efficiency, reduce the effect of adding

Active Publication Date: 2020-06-23
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the flame retardant compounding reported so far adopts the method of direct physical mixing, without considering the influence of the interfacial bonding mode and the surface properties of the flame retardant

Method used

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  • Preparation method of magnesium-based multifunctional composite particles
  • Preparation method of magnesium-based multifunctional composite particles
  • Preparation method of magnesium-based multifunctional composite particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 A preparation method of magnesium-based multifunctional composite particles, comprising the following steps:

[0030] (1) Add the magnesium borate one-dimensional micro-nano material into distilled water, and ultrasonically disperse it for 15 minutes at a frequency of 20KHz to obtain a magnesium borate one-dimensional micro-nano material slurry with a mass fraction of 5%; the magnesium borate one-dimensional micro-nano material Aqueous ammonia with a mass fraction of 15% was added to the slurry to obtain slurry A.

[0031] Wherein: the ratio of the amount of ammonia water to the magnesium borate one-dimensional micro-nano material is 3.8:1.

[0032] (2) Under mechanical stirring at 600rpm / min, add magnesium chloride solution with a mass fraction of 30% to slurry A at a speed of 50g / min to obtain slurry B.

[0033] Wherein: the ratio of magnesium chloride to magnesium borate one-dimensional micro-nano material is 1.9:1.

[0034] (3) Transfer the slurry B t...

Embodiment 2

[0040] Embodiment 2 A preparation method of magnesium-based multifunctional composite particles, comprising the following steps:

[0041] (1) Add the magnesium borate one-dimensional micro-nano material into distilled water, and after ultrasonic dispersion for 30 minutes at a frequency of 50KHz, obtain a magnesium borate one-dimensional micro-nano material slurry with a mass fraction of 15%; the magnesium borate one-dimensional micro-nano material A sodium hydroxide solution with a mass fraction of 10% was added to the slurry to obtain slurry A.

[0042] Wherein: the ratio of the amount of sodium hydroxide to the magnesium borate one-dimensional micro-nano material is 15.4:1.

[0043] (2) Under mechanical stirring at 1000rpm / min, add magnesium chloride solution with a mass fraction of 10% to slurry A at a speed of 100g / min to obtain slurry B.

[0044] Wherein: the ratio of magnesium chloride to magnesium borate one-dimensional micro-nano material is 7.7:1.

[0045] (3) Trans...

Embodiment 3

[0051] Embodiment 3 A preparation method of magnesium-based multifunctional composite particles, comprising the following steps:

[0052] (1) Add the magnesium borate one-dimensional micro-nano material into distilled water, and ultrasonically disperse it for 20 minutes at a frequency of 40KHz to obtain a magnesium borate one-dimensional micro-nano material slurry with a mass fraction of 10%; the magnesium borate one-dimensional micro-nano material A potassium hydroxide solution with a mass fraction of 12% was added to the slurry to obtain slurry A.

[0053] Wherein: the ratio of the amount of potassium hydroxide to the magnesium borate one-dimensional micro-nano material is 10:1.

[0054] (2) Under mechanical stirring at 800rpm / min, add magnesium chloride solution with a mass fraction of 20% to slurry A at a speed of 80g / min to obtain slurry B.

[0055] Wherein: the ratio of magnesium chloride to magnesium borate one-dimensional micro-nano material is 5:1.

[0056] (3) Tran...

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Abstract

The invention relates to a preparation method of magnesium-based multifunctional composite particles, which comprises the following steps: (1) adding a magnesium borate one-dimensional micro-nano material into distilled water, and carrying out ultrasonic dispersion to obtain magnesium borate one-dimensional micro-nano material slurry with the mass fraction of 5-15%; adding alkali liquor into the magnesium borate one-dimensional micro-nano material slurry to obtain slurry A; (2) under mechanical stirring, adding a magnesium chloride solution into the slurry A to obtain slurry B; (3) transferring the slurry B into a reaction kettle, carrying out hydrothermal reaction, and naturally cooling to room temperature to obtain slurry C; (4) under mechanical stirring, dropwise adding an organic phosphate ethanol solution into the slurry C to obtain slurry D; and (5) sequentially filtering, washing and drying the slurry D to obtain the magnesium-based multifunctional composite particles. The method disclosed by the invention is easy to implement, and the obtained composite particles have enhanced performance, can effectively improve the flame-retardant efficiency and enhance the interface bonding force.

Description

technical field [0001] The invention relates to the field of chemical material preparation, in particular to a preparation method of magnesium-based multifunctional composite particles. Background technique [0002] As an environmentally friendly halogen-free flame retardant, magnesium hydroxide has the functions of flame retardancy, smoke suppression and filling, and has a large heat absorption, high thermal decomposition temperature and can neutralize the acid gas generated during polymer combustion. and other advantages are favored. However, magnesium hydroxide has a strong surface polarity, poor compatibility with polymers, and is easy to agglomerate during polymerization. Direct application will reduce the mechanical properties and flame retardant effect of composite materials. Research at home and abroad mainly improves the dispersion and compatibility of magnesium hydroxide in polymers by surface modification of magnesium hydroxide. The surface modification of magne...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/06C09C3/08C08K9/10C08K3/38C08L23/12
CPCC08K3/38C08K9/10C08K2003/387C08L23/12C08L2201/02C09C1/028C09C3/006C09C3/06C09C3/08
Inventor 兰生杰朱东海党力许紫钰杨林博黄子洋
Owner QINGHAI UNIVERSITY
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