Preparation method of nano-magnesium hydroxide

[0029] 1) Take by weighing 50.8g of magnesium chloride hexahydrate, and use a 500mL volumetric flask to prepare a solution of 0.5mol / L;

[0030] 2) Weigh 0.18 g of polyethylene glycol 6000 and dissolve it in 20 mL of water to prepare a polyethylene glycol 6000 aqueous solution with a concentration of 9 g / L.

[0031] 3) Weigh 20 g of sodium hydroxide and prepare a 1.0 mol / L solution with a 500 mL volumetric flask.

[0032] 4) Add 10 mL of ammonia water with a concentration of 14 mol / L to 40 mL of sodium hydroxide with a concentration of 1.0 mol / L, and ultrasonically disperse for 1 hour to obtain a mixed alkali.

[0033] 5) Under an ultrasonic field, add 15 mL of an aqueous solution of polyethylene glycol 6000 with a concentration of 9 g / L to the mixed alkali dropwise at a speed of 4 mL / min. After the dropwise addition, continue ultrasonic dispersion for 0.5h.

[0034] 6) Under the ultrasonic field, add 150 mL of magnesium chloride aqueous solution with a concentrat

[0038] 1) Take by weighing 50.8g of magnesium chloride hexahydrate, and use a 500mL volumetric flask to prepare a solution of 0.5mol / L;

[0039] 2) Weigh 0.18 g of polyethylene glycol 6000 and dissolve it in 20 mL of water to prepare a polyethylene glycol 6000 aqueous solution with a concentration of 4.5 g / L.

[0040] 3) Weigh 20 g of sodium hydroxide and prepare a 1.0 mol / L solution with a 500 mL volumetric flask.

[0041] 4) Add 10 mL of ammonia water with a concentration of 14 mol / L to 10 mL of sodium hydroxide with a concentration of 1.0 mol / L, and ultrasonically disperse for 0.75 h to obtain a mixed base.

[0042] 5) Under an ultrasonic field, add 15 mL of an aqueous solution of polyethylene glycol 6000 with a concentration of 4.5 g / L to the mixed alkali dropwise at a speed of 3 mL / min. After the dropwise addition, continue to ultrasonically disperse for 0.75h.

[0043] 6) Under the ultrasonic field, add 150 mL of magnesium chloride aqueous solution with a co

[0047] 1) Take by weighing 50.8g of magnesium chloride hexahydrate, and use a 500mL volumetric flask to prepare a solution of 0.5mol / L;

[0048] 2) Weigh 0.18g of polyethylene glycol 6000 and dissolve it in 20mL of water to prepare an aqueous solution of polyethylene glycol 6000 with a concentration of 18g / L.

[0049] 3) Weigh 20 g of sodium hydroxide and prepare a 1.0 mol / L solution with a 500 mL volumetric flask.

[0050] 4) Add 10 mL of ammonia water with a concentration of 14 mol / L to 25 mL of sodium hydroxide with a concentration of 1.0 mol / L, and ultrasonically disperse for 0.5 h to obtain a mixed base.

[0051] 5) Under an ultrasonic field, 15 mL of an aqueous solution of polyethylene glycol 6000 with a concentration of 18 g / L was added dropwise to the mixed alkali at a speed of 5 mL / min. After the dropwise addition, continue to ultrasonically disperse for 1 h.

[0052] 6) Under an ultrasonic field, add 150 mL of an aqueous solution of magnesium chloride wi