The method for preparing fibrous magnesium hydroxide by magnesium oxide hydration method
A technology of magnesium hydroxide and magnesium oxide, which is applied in the production of inorganic raw material artificial filaments and lime, can solve the problems of complex process flow, difficult to control reaction conditions, etc., and achieve high product purity, simple and easy process, and cost saving. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0031] Weigh 0.03g of stearic acid and ultrasonically disperse in 2ml of ethanol, weigh 2.32g of magnesium oxide after calcining magnesite at 650°C for 6h, add 1.07g of PEG-20000, 0.65g of magnesium sulfate and 25ml of water to make an aqueous solution, add The above-mentioned ethanol solution continued to disperse evenly by ultrasonic, stirred and reacted in a water bath at 50°C for 6 hours, then added 0.28g basic magnesium chloride whiskers and 0.02ml propylenediamine, stopped stirring after reacting for 8 minutes, aged at 6°C for 9 days, filtered , washing and drying to obtain fibrous magnesium hydroxide. Generated Mg(OH) 2 Crystal XRD such as figure 1 shown by figure 1 It can be seen that the generated diffraction peaks are consistent with the magnesium hydroxide JCPDS86-2164 standard card without impurities. figure 2 Microscopic picture of the product obtained in this example, from figure 2 It can be seen that the generated magnesium hydroxide is fibrous, with very ...
Embodiment 2
[0033] Weigh 0.06g of aluminate coupling agent H-3 and ultrasonically disperse in 6ml of ethanol, weigh 4.06g of magnesium oxide after calcination of magnesite at 900°C for 4 hours, add 0.56g of polyvinylpyrrolidone, 0.56g of hexadecyl Trimethylammonium bromide, 18.07g magnesium sulfate and 400ml water were made into an aqueous solution, and the above-mentioned ethanol solution was added to continue ultrasonic dispersion. After stirring and reacting in a water bath at 80°C for 4 hours, 1.92g basic magnesium sulfate whiskers were added as crystal seeds and 0.20ml Ethylenediamine, react for 10 minutes, stop stirring, age at 12°C for 7 days, filter, wash and dry to obtain fibrous magnesium hydroxide. image 3 Microscopic picture of the product obtained in this example, from image 3 It can be seen that the generated magnesium hydroxide is fibrous and regular, with a length of about 400 μm to 1900 μm.
Embodiment 3
[0035] Weigh 0.13g of sodium stearate and superdisperse it in 6ml of ethanol, weigh 4.13g of magnesium oxide after calcining magnesite at 1050°C for 3 hours, add 0.13g of PEG-20000, 8.76g of magnesium sulfate and 200ml of water to make an aqueous solution, add the above Continue to ultrasonically disperse the ethanol solution. After stirring and reacting in a water bath at 95°C for 2 hours, add 0.93g of basic magnesium chloride whisker seeds and 0.40ml of butanediamine. After reacting for 6 minutes, place it at 20°C for 5 days, filter and wash , drying to obtain fibrous magnesium hydroxide ( Figure 4 ), and its length is about 240 μm to 1500 μm.
PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More