Sericite/TiO2 composite material with white pigment property

A composite material and sericite technology, which is applied in the field of preparation of sericite/TiO2 composite materials, can solve the problems of composite pigments such as poor performance, instability, lack of exciting external force and bonding groups, and achieve low price and cost reduction Effect

Inactive Publication Date: 2008-07-02
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 bonding groups that produce a firm effect between the matrix and titanium dioxide, so the performance of the composite pigment is poor and unstable

Method used

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  • Sericite/TiO2 composite material with white pigment property
  • Sericite/TiO2 composite material with white pigment property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. 400kg of sericite powder (500 orders) and 400kg of deionized water are placed in the ultra-fine grinding system of the wet stirring mill, stirred for 15min by a stirrer with high-speed stirring, and then added a solution containing 4kg of sodium tripolyphosphate ( Solution concentration 20%, add this solution 20kg), then stir for 40min to make ultrafine grinding slurry;

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

[0032] 3. The crystallized TiO 2 (rutile titanium dioxide) 200kg, deionized water 200kg placed in a stirring tank with high-speed stirring effect and stirred for 15min, then added a solution containing 3kg sodium tripolyphosphate (solution concentration 20%, add 15kg of this solution), and stirred for 40min make a paste;

[0033] 4. Gr...

Embodiment 2

[0040] 1. 400kg of sericite powder (500 orders) and 400kg of deionized water are placed in the ultra-fine grinding system of the wet stirring mill, stirred for 15min by a stirrer with high-speed stirring, and then added a solution containing 4kg of sodium tripolyphosphate ( Solution concentration 20%, add this solution 20kg), then stir for 40min to make ultrafine grinding slurry;

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

[0042] 3. The crystallized TiO 2 (Anatase Titanium Dioxide) 200kg, 200kg of deionized water are placed in a stirring tank with high-speed stirring and stirred for 15min, then add a solution containing 3kg of sodium tripolyphosphate (solution concentration 20%, add 15kg of this solution), and stir 40min to make slurry;

[0043] 4. Grind...

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Abstract

The invention provides a sericite / TiO2 composite material with properties of pigment titanium dioxide and a preparation method thereof. The invention adopts high-grade sericite powder body as a core basic body and takes crystal TiO2 as an envelope object. In a wet method superfine grinding system, the reaction coating and the modification of TiO2 on the surface of the core basic body are realized in a way of particle-particle coating modification so as to prepare the sericite / TiO2 composite material with the properties of titanium dioxide. In materials of the invention, the TiO2 is evenly coated on the surface of sericite and the combination of the TiO2 and the sericite is stable. The integration of the properties of the surface of compound particles TiO2 and TiO2 and the performance of the sericite leads to the fact that the sericite / TiO2 composite material has paint properties such as great covering ability and good compatibility of an application system. When the envelope object is rutile type TiO2, the sericite / TiO2 composite material has the functions of absorbing ultraviolet radiation and anti-ultraviolet radiation which are equal to or superior to that of the rutile type TiO2. The sericite / TiO2 composite material also has the characteristics of simple technique and low cost, etc. The application of the sericite / TiO2 composite material in products such as paints can obtain the technical capability which is the same as that of the use of titanium pigment and can greatly lower the cost. The sericite / TiO2 composite material can be also used for the situations where the physical performance of white paint is adopted such as plastics and paper making, and have the functions of improving the performance of applications and reducing the cost.

Description

Technical field [0001] The present invention relates to the technical field of production of composite materials with pigment properties prepared by inorganic substance modification and composite technology, in particular, relates to sericite / TiO 2 Methods of preparation of composite materials. Background technique [0002] Titanium dioxide (pigment titanium dioxide), as the best white pigment produced by people so far, has been widely used in many industrial sectors such as coatings, papermaking, plastics, etc., and has become an important chemical raw material in national economic construction. In recent years, due to factors such as economic development, social progress and improvement of people's living standards, the rapid development of the construction industry and related coating industries has increased the demand for white pigment titanium dioxide. On the other hand, the increasing shortage of high-quality titanium resources in the world, the complexity of resourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/00C09C1/36C09C1/28
Inventor 丁浩杜高翔邓雁希冉君
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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