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Preparation method of whisker-shaped magnesium hydroxide

A technology of magnesium hydroxide and hydroxide, applied in the direction of magnesium hydroxide, chemical instruments and methods, single crystal growth, etc., can solve the problems of high requirements for reaction conditions and long process flow, and achieve short process flow and easy preparation conditions The effect of control

Active Publication Date: 2013-01-16
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction temperature is controlled within 250°C, and the reaction is within 30 minutes to 10 hours. The whole process is long and the reaction conditions are relatively high.

Method used

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  • Preparation method of whisker-shaped magnesium hydroxide
  • Preparation method of whisker-shaped magnesium hydroxide
  • Preparation method of whisker-shaped magnesium hydroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Measure 150ml of absolute ethanol, add 3.0g of sodium hydroxide, stir at 70°C, add 3.0g of whisker-shaped basic magnesium chloride, keep stirring for 2 hours, and obtain whisker-like magnesium hydroxide solution. The above-mentioned reacted solution was suction-filtered at room temperature, washed with a small amount of distilled water, and dried in an oven at 105°C for 12 hours to obtain the target product, whisker-like magnesium hydroxide. The ethanol-containing filtrate after suction filtration can be distilled and reused.

Embodiment 2

[0026] Measure 150ml of acetone solution, add 2g of potassium hydroxide, stir at room temperature, add 2g of whisker-shaped basic magnesium chloride, keep stirring for 16 hours, and obtain whisker-like magnesium hydroxide solution. The above-mentioned reacted solution was suction-filtered at room temperature, washed with a small amount of distilled water, and dried in an oven at 105°C for 12 hours to obtain the target product, whisker-like magnesium hydroxide. The acetone-containing filtrate after suction filtration can be distilled and reused.

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Abstract

The invention relates to a preparation method of whisker-shaped magnesium hydroxide. The preparation method includes taking magnesium salt crystal whiskers, adding a crystal transforming agent and basic hydroxide, performing crystal form transformation at a certain temperature, subjecting crystallized materials to filtering, washing and drying to obtain the whisker-shaped magnesium hydroxide, wherein the filtrate after the filtration can be recycled through distillation. The magnesium hydroxide prepared through the method is in the whicker shape and provided with good reinforcement effect, and the defect of the deteriorative mechanical property caused by addition of common magnesium hydroxide into polymer based composites is overcome.

Description

technical field [0001] The invention belongs to the field of inorganic materials, in particular to a preparation method of whisker-shaped magnesium hydroxide. Background technique [0002] As an important inorganic chemical product, magnesium hydroxide has been widely used in chemical industry, environmental protection, building materials, aquaculture and other fields. Magnesium hydroxide is a new type of green and environment-friendly inorganic flame retardant. Since it absorbs a large amount of heat during dehydration during decomposition and evaporation of water, it can inhibit the temperature rise, and water vapor can also dilute combustible gases. It has non-toxic, low-smoke, Environmentally friendly and other advantages, it is considered to be the most promising and environmentally friendly inorganic flame retardant, and it is being paid more and more attention. However, as an additive inorganic flame retardant, magnesium hydroxide, on the one hand, achieves a flame r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B1/00C30B29/16C30B29/62C01F5/22
Inventor 吴智诚林璋洪杨平林文文
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI