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Chemical coating method for modifying surface of magnesium hydroxide whisker material

A magnesium hydroxide and chemical coating technology, applied in the direction of fibrous fillers, dyed low-molecular-weight organic compounds, etc., can solve the problems such as the inability to select flame retardants and the decline of mechanical and mechanical properties of composite materials. The effect of the sex process is simple and easy, and the equipment is simple

Inactive Publication Date: 2008-04-23
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of so many inorganic powder additives to organic polymer materials such as plastics and rubber will inevitably lead to a significant decline in the mechanical properties of these composite materials, especially for composite polymer materials with high strength requirements, it is almost impossible to use this kind of flame retardant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] According to the modification method that this invention completes, get Potassium Oleate C 17 h 33 COOK is used as a surface modifier for magnesium hydroxide whiskers, and the technical conditions for the selected modification process are as follows: the dosage of the modifier is 2% of the mass of whiskers in the magnesium hydroxide whisker slurry, and the concentration of the magnesium hydroxide whisker slurry 4%, the mixing time is 30min, the mixing temperature is 80°C, and the stirring speed is 600rpm. After modification, the activation index of the magnesium hydroxide whiskers reaches 99.35%, and the modification effect is very good.

Embodiment 2

[0031] According to the modification method that the present invention completes, get sodium stearate C 17 h 35 COOK is used as a magnesium hydroxide whisker surface modifier, and the technical conditions of the selected modification process are: the amount of modifier is 3%, the concentration of the slurry is 5%, the mixing time is 40min, and the mixing temperature is 85°C. The mixing speed was 700 rpm. After modification, the activation index of the magnesium hydroxide whiskers reaches 99.15%, and the modification effect is very good.

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PUM

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Abstract

The chemical coating process for surface modifying magnesium hydroxide crystal whisker material includes the following main steps: preparing materials, adding modifier, stirring to mix, filtering and drying, and packing. It features the modifier of potassium oleate C17H33COOK or sodium stearate C17H35COONa in the amount of 1.2-5.0 wt% of magnesium hydroxide crystal whisker, the concentration of the magnesium hydroxide crystal whisker suspension of 2.0-5.0 wt%, the stirring rate of 450-900 rpm, the mixing temperature of 75-90 deg.c and the mixing time of 20-60 min. The process has excellent modification effect and activating index of magnesium hydroxide crystal whisker up to 95 %, and is simple, low in cost, energy saving and environment friendly.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic non-metallic powder materials, and specifically relates to a chemical coating method for surface modification of magnesium hydroxide whisker materials. technical background [0002] Magnesium hydroxide powder is one of the inorganic non-metallic powder materials. Since its thermal decomposition temperature reaches 340°C and no toxic and harmful gases are released during the decomposition process, it is compatible with other inorganic flame retardants such as aluminum hydroxide, antimony oxide, and boron. Compared with acid salts, molybdenum compounds, etc., it has good flame retardancy and smoke suppression effects, so it has received extensive attention in the field of material flame retardancy technology. [0003] Among the inorganic flame retardant materials produced in western developed countries, magnesium hydroxide flame retardant has accounted for 30% of the total output, w...

Claims

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Application Information

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IPC IPC(8): C09C3/08C09C1/02C08K9/00
Inventor 姜玉芝邓子玉
Owner SHENYANG LIGONG UNIV
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