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Method for preparing nano magnesium hydroxide through mechanical ball milling

A technology of nano-magnesium hydroxide and mechanical ball milling, applied in the direction of magnesium hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of increased difficulty and cost of production, and achieve low cost, high purity, and favorable large-scale industrial production Effect

Inactive Publication Date: 2018-10-26
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing method of preparing nano-magnesium hydroxide by mechanical ball milling needs to add grinding aids, which undoubtedly increases the difficulty and cost of production.

Method used

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  • Method for preparing nano magnesium hydroxide through mechanical ball milling
  • Method for preparing nano magnesium hydroxide through mechanical ball milling
  • Method for preparing nano magnesium hydroxide through mechanical ball milling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Step S1: Put 2g of magnesium oxide powder in the ball mill jar of the planetary ball mill, add 20g of deionized water at room temperature and 84g of grinding balls;

[0018] Step S2: Use a planetary ball mill to mill at a speed of 240r / min for 1 hour, then mill at a speed of 360r / min for 1 hour, and add 2g of deionized water at room temperature every 30 minutes during the milling;

[0019] Step S3: taking out the slurry obtained after ball milling and vacuum drying at 120° C. until the sample has constant weight to obtain nano-sized magnesium hydroxide;

[0020] figure 1 It is the XRD pattern of the nano-magnesium hydroxide that the present embodiment makes, compares the standard XRD pattern of magnesium hydroxide, the magnesium hydroxide that the present embodiment makes is completely consistent with the standard XRD pattern peak position of magnesium hydroxide, in the XRD pattern There were no other peaks in , indicating that the product was of high purity. , so it ...

Embodiment 2

[0023] Step S1: Put 2g of magnesium oxide powder in the ball mill jar of the planetary ball mill, add 16g of deionized water at room temperature and 84g of grinding balls;

[0024] Step S2: Use a planetary ball mill to mill at a speed of 240r / min for 1 hour, then mill at a speed of 360r / min for 1 hour, and add 4g of deionized water at room temperature every 30 minutes during the milling;

[0025] Step S3: Take out the slurry obtained after ball milling and vacuum-dry at 120° C. until the sample has a constant weight to obtain nano-magnesium hydroxide.

Embodiment 3

[0027] Step S1: Put 2g of magnesium oxide powder in the ball mill jar of the planetary ball mill, add 24g of deionized water at room temperature and 84g of grinding balls;

[0028] Step S2: use a planetary ball mill to mill at a speed of 240r / min for 1 hour, then mill at a speed of 360r / min for 1 hour, and add 3g of deionized water at room temperature every 30 minutes during the milling;

[0029] Step S3: Take out the slurry obtained after ball milling and vacuum-dry at 120° C. until the sample has a constant weight to obtain nano-magnesium hydroxide.

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Abstract

The invention discloses a method for preparing nano magnesium hydroxide through mechanical ball milling by taking magnesium oxide powder and room-temperature de-ionized water as raw materials, and belongs to the technical field of preparation of nano-grade magnesium hydroxide. The method disclosed by the invention is characterized by comprising the following steps: step S1: putting 10 parts of commercial magnesium oxide powder by weight into a ball milling pot of a planetary ball mill; adding 80 to 120 parts of the de-ionized water by weight and 420 parts of a milling ball by weight; step S2:carrying out the ball milling for 1h by utilizing the planetary ball mill at the rotary speed of 240r / min, and then carrying out the ball milling for 1h at the rotary speed of 360r / min; adding 10 to 20 parts of the de-ionized water by weight every other 30min in a ball milling process; step 3: putting slurry obtained by the ball milling into a vacuum drying box at 120 DEG C and drying to obtain the nano magnesium hydroxide. The nano magnesium hydroxide prepared by the method provided by the invention has the advantages of good stability, high purity, low cost and simple technology and large-scale industrial production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of preparing nano-magnesium hydroxide, and in particular relates to a method for preparing nano-magnesium hydroxide by mechanical ball milling. Background technique [0002] Compared with ordinary magnesium hydroxide powder, nano-scale magnesium hydroxide has the advantages of higher purity, smaller particle size, and larger specific surface area, which makes it have broad application prospects in the fields of polymer materials and environmental pollution control. [0003] Magnesium hydroxide is an important inorganic flame retardant, widely used in rubber, plastic, fiber and resin and other polymer materials industries. The particle size of magnesium hydroxide is very important to the flame retardant performance. Nano-sized magnesium hydroxide can significantly improve the flame retardancy, anti-drip, smoke suppression and other capabilities of the product. Therefore, the flame retardant performance of na...

Claims

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Application Information

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IPC IPC(8): C01F5/14B82Y30/00
CPCB82Y30/00C01F5/14C01P2002/72C01P2004/03C01P2004/64
Inventor 吕香英张哲张啸天张琳惠薛扬扬
Owner HENAN NORMAL UNIV
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