Preparation method of alkali type magnesium chloride whisker

A technology of magnesium chloride and magnesium chloride solution, which is applied in the field of materials, can solve the problems of long production cycle and low yield, and achieve the effects of shortening the production cycle, increasing the yield, and increasing the yield

Inactive Publication Date: 2011-07-27
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method for preparing basic magnesium chloride whiskers, so as to solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of magnesium chloride solution:

[0024] 0.3 gram of magnesium chloride hexahydrate is mixed with 0.192 gram of water to prepare magnesium chloride aqueous solution.

[0025] (2) Preparation of microemulsion:

[0026] Weigh 1.1g of CTAB into a beaker, then add 25ml of cyclohexane and the prepared magnesium chloride solution to the beaker in sequence, and finally add n-butanol dropwise to the beaker while stirring until a transparent and clear appearance is formed. The microemulsion, the n-butanol added is about 7ml;

[0027] (3) Preparation of basic magnesium chloride whiskers:

[0028] Slowly add magnesium oxide into the microemulsion. The dosage of magnesium oxide is 0.3 g. After 2 hours of reaction, put it into an ultrasonic instrument for 0.5 hours of ultrasound, continue to stir for 2 hours, and finally let it stand for 12 hours. Transfer the liquid left standing for 12 hours to a centrifuge tube, centrifuge at a speed of 4500r / min for 5 minutes,...

Embodiment 2

[0032] (1) Preparation of magnesium chloride solution:

[0033] 0.3 gram of magnesium chloride hexahydrate is mixed with 0.192 gram of water to prepare magnesium chloride aqueous solution.

[0034] (2) Preparation of microemulsion:

[0035] Weigh 1.1g of CTAB into a beaker, then add 25ml of cyclohexane and the prepared magnesium chloride solution to the beaker in sequence, and finally add n-amyl alcohol dropwise to the beaker while stirring until a transparent and clear appearance is formed. microemulsion, the n-butanol added is about 6ml;

[0036] (3) Preparation of basic magnesium chloride whiskers:

[0037] Slowly add magnesium oxide into the microemulsion. The dosage of magnesium oxide is 0.3 g. After 2 hours of reaction, put it into an ultrasonic instrument for 0.5 hours of ultrasound, continue to stir for 2 hours, and finally let it stand for 12 hours. Transfer the liquid left standing for 12 hours to a centrifuge tube, centrifuge at a speed of 4500r / min for 5 minutes...

Embodiment 3

[0041](1) Preparation of magnesium chloride solution:

[0042] 0.3 gram of magnesium chloride hexahydrate is mixed with 0.192 gram of water to prepare magnesium chloride aqueous solution.

[0043] (2) Preparation of microemulsion:

[0044] Weigh 1.1g of CTAB into a beaker, then add 25ml of n-octane and the prepared magnesium chloride solution to the beaker in turn, and finally add n-butanol dropwise to the beaker while stirring until the appearance is transparent and clear. The microemulsion, the n-butanol added is about 8ml;

[0045] (3) Preparation of basic magnesium chloride whiskers:

[0046] Slowly add magnesium oxide into the microemulsion. The dosage of magnesium oxide is 0.3 g. After 2 hours of reaction, put it into an ultrasonic instrument for 0.5 hours of ultrasound, continue to stir for 2 hours, and finally let it stand for 12 hours. Transfer the liquid left standing for 12 hours to a centrifuge tube, centrifuge at a speed of 4500r / min for 5 minutes, wash the pre...

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Abstract

The invention discloses a preparation method of alkali type magnesium chloride whisker, and more particularly relates to a method for preparing the alkali type magnesium chloride whisker in a microemulsion way. The method comprises the steps of: preparing microemulsion by cetyl trimethyl ammonium bromide, alcohol cosurfactant, oil and magnesium chloride solution according to the mass ratio of 1.1: 6.3: 20: 0.492 at the room temperature; then, adding ative magnesium oxide powder into the microemulsion; and finally, preparing the dispersed alkali type magnesium chloride whisker. Compared with the highest level sedimentation method or hydrothermal method at home and abroad, the method improves the length-diameter ratio of the whisker, realizes the controllable growth of the size of the whisker, and achieves the aims of energy conservation, emission reduction, large-scale production and wide application; furthermore, the production cycle of the whisker can be shortened to be 1/2-1/6, and the yield is improved to be about 3-20 times.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method for preparing basic magnesium chloride whiskers by using a microemulsion method. Background technique [0002] Basic magnesium chloride (Basic mganesium chloride, BMC) is also known as magnesium oxychloride (magnesium oxychloride, MOC). Due to the large amount of magnesium salt resources in my country, the low price of raw materials for preparing basic magnesium chloride, and the simple preparation process and equipment, basic magnesium chloride has become an important magnesium salt compound. The precursors of magnesium oxide and magnesium hydroxide nanostructures have broad application prospects. At present, most of them adopt precipitation method or hydrothermal method, and MgCl 2 The reaction of aqueous solution and alkali to prepare basic magnesium chloride whiskers can synthesize BMC whiskers with large aspect ratio and perfect crystal form. The alkali used is Ca(OH) 2 ,...

Claims

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Application Information

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IPC IPC(8): C30B29/12C30B29/62
Inventor 秦麟卿张联盟黄志雄余金辉
Owner WUHAN UNIV OF TECH
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