Liquid phase chemical reaction method for preparing basic magnesium chloride
A technology of liquid-phase chemical reaction and liquid-phase reaction, which is applied in the field of preparation of one-dimensional nanomaterials, can solve the problems of restricting large-scale production and application, high reaction temperature and high preparation cost of gas-phase method, and achieves good single crystal crystallization performance and easy process Control, effect of shape rules
Inactive Publication Date: 2006-05-10
DALIAN UNIV OF TECH
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However, the gas phase method has high reaction temperature, high energy consumption, high p
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[0018] (1) At first, magnesium chloride hexahydrate is prepared into an aqueous solution of 6 mol / l, according to MgCl 2 The molar ratio of / MgO is 1:30. The ordinary light magnesium oxide is added to the aqueous solution of magnesium chloride hexahydrate, and the water bath is heated to 340K, and the stirring speed is 600r / min. After 12 hours of reaction, vacuum extraction;
[0019] (2) washing the filtered gel state precipitate with deionized water 5 times;
[0020] (3) 1 gram of precipitation was washed 4 times with 30 milliliters of isopropanol;
[0021] (4) drying the washed precipitate at 360K for 7 hours to obtain basic magnesium chloride nanorod crystals with a diameter of about 100-200 nm and a length of about 4-8 μm.
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The invention belongs to the art of preparation of one-dimensional nanometer material. It mainly contains: using magnesium chloride hexahydrate and common light magnesium oxide as raw material, firstly preparing gel-state basic magnesium chloride deposit, then filtering out the deposit and washing with deionized water, washing deposit with alcohol isopropylicum, filtering and drying to prepare basic magnesium chloride nano-stick of diameter of about 100-200nm and of length of about 4-8um. The basic magnesium chloride nano-stick is characterized in that the whiteness is good, the activity is strong and it is hyperfine, and it has broad utility prospect in the field of flame retardancy, paper making, fire-fighting, thermosol filler, and so on. And the merit of the process is characterized in that the operation temperature is low, the technique is simple, the production cost is low, the yield is high, it is easy for industrial production, and so on.
Description
technical field [0001] The invention belongs to the technical field of one-dimensional nanomaterial preparation, and relates to a method for preparing basic magnesium chloride nanorods by liquid-phase chemical reaction Background technique [0002] Basic magnesium chloride nanorods are a member of the one-dimensional nano-magnesium material family. Basic magnesium chloride is usually acicular or fibrous crystals. The fibrous or rod-shaped basic magnesium chloride has the characteristics of good whiteness, strong activity and ultra-fineness. Paper fillers can significantly improve the whiteness and opacity of paper, and at the same time have a certain fire resistance, while conventional fillers generally do not have this performance. Basic magnesium chloride nanorods not only have a good flame retardant effect, but also can enhance the mechanical strength of the matrix material. As a filler for hot melt adhesives, they can effectively improve the processability, 180-degree pe...
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Inventor 王宝和于才渊张文博范方荣
Owner DALIAN UNIV OF TECH
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