Magnesium hydroxide/TiO2 composite material with flame resistance property and pigment

A technology of magnesium hydroxide and composite materials, applied in the direction of inorganic pigment treatment, fibrous fillers, chemical instruments and methods, etc., can solve the problems of poor performance, instability of composite pigments, poor dispersion of nucleation matrix and TiO2, etc. To achieve the effect of low price and cost reduction

Inactive Publication Date: 2009-04-29
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With this method, due to the nucleation matrix and TiO 2 The degree of dispersion is poor, and there is a lack of exciting external force and bo

Method used

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  • Magnesium hydroxide/TiO2 composite material with flame resistance property and pigment
  • Magnesium hydroxide/TiO2 composite material with flame resistance property and pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Put 400kg of magnesium hydroxide powder (200 mesh) and 400kg of deionized water in the ultrafine grinding system of a wet stirring mill, stir for 30 minutes with a mixer with high-speed stirring, and then add a solution containing 4kg of sodium polyacrylate ( The concentration of the solution is 20%, add 20kg of the solution), and then stir for 40 minutes to prepare ultra-fine grinding slurry;

[0031] 2. Start the ultra-fine grinding system of the wet stirring mill, and grind the slurry made of magnesium hydroxide powder and water according to the continuous grinding method to make the particle size of the ground product reach 70% of -2μm;

[0032] 3. Will crystallize TiO 2 (Rutile titanium dioxide) 200kg and 200kg deionized water are placed in a stirring tank with high-speed stirring for 15 minutes, then 3kg of sodium polyacrylate solution (solution concentration 20%, 15kg of the solution is added), and then stirred for 40 minutes. Slurry

[0033] 4. Grind the magnesiu...

Embodiment 2

[0040] 1. Put 400kg of magnesium hydroxide powder (1250 mesh) and 400kg of deionized water in the ultrafine grinding system of a wet stirring mill, stir for 15 minutes with a mixer with high-speed stirring, and then add a solution containing 6kg of sodium polyacrylate ( The concentration of the solution is 20%, 30kg of the solution is added), and then stirred for 40 minutes to prepare an ultra-fine grinding slurry;

[0041] 2. Start the ultra-fine grinding system of the wet stirring mill, and grind the slurry made of magnesium hydroxide powder and water according to the continuous grinding method to make the particle size of the ground product reach 70% of -2μm;

[0042] 3. Will crystallize TiO 2 (Anatase Titanium Dioxide) 200kg and 200kg deionized water are placed in a stirring tank with high-speed stirring for 15min, then 3kg of sodium polyacrylate solution (solution concentration 20%, 15kg of the solution) is added, and then stirred for 40min Made into slurry

[0043] 4. Grind ...

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Abstract

The invention provides a magnesium hydroxide/TiO2 composite material with fire resistance and pigment properties and a preparation method thereof. The preparation method adopts magnesium hydroxide powder as a core substrate and crystal TiO2 as a coating, realizes reaction coating and modification of the TiO2 on the surface of the core substrate in a wet superfine grinding system by means of grain-grain coating modification, so as to prepare the magnesium hydroxide/TiO2 composite material with the fire resistance and the pigment properties. The TiO2 in the composite material is uniformly coated on the surface of magnesium hydroxide particles and stably combined with the magnesium hydroxide particles. The magnesium hydroxide/TiO2 composite material has the pigment properties such as strong covering power and good compatibility with an application system. Simultaneously, the magnesium hydroxide/TiO2 composite material prepared has the fire resistance due to the fire resistance of magnesium hydroxide. Moreover, the magnesium hydroxide/TiO2 composite material also has the characteristics of simple manufacturing technique, low cost and so on, can obtain the same technical pigment properties with use of titanium pigment powder when being applied to products such as coating, greatly reduces the cost, can also be used in occasions which utilize the physical property and the fire resistance of white pigment such as plastics and rubber, and has the functions of improving the applied product performance and reducing the cost.

Description

Technical field [0001] The present invention relates to the technical field of production of composite materials with flame-retardant properties and pigment properties prepared by the use of inorganic substance modification and composite technology. Specifically, it relates to magnesium hydroxide / TiO 2 Preparation method of composite material. Background technique [0002] Titanium dioxide (pigment titanium dioxide), as the best white pigment manufactured by people so far, has been widely used in many industrial sectors such as coatings, papermaking, and plastics, and has become an important chemical raw material in the construction of the national economy. In recent years, due to economic development, social progress and the improvement of people's living standards, the rapid development of the construction industry and related coatings industry has increased the demand for white pigment titanium dioxide. On the other hand, the world's high-quality titanium resources are increas...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C1/36C09C3/00C09K21/02
Inventor 丁浩杜高翔李渊
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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