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Composite titanium dioxide and preparation method thereof

A technology for compounding titanium dioxide and titanium dioxide, which is applied in chemical instruments and methods, dyeing low-molecular-weight organic compounds, fibrous fillers, etc., can solve the problem of insufficient weather resistance, unsatisfactory performance of achromatic power, and reduced hiding power, etc. question

Active Publication Date: 2014-04-23
丹东亿龙高科技材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of performance, there is currently no composite titanium dioxide that can replace pure titanium dioxide in the market, such as reduced hiding power, insufficient weather resistance, unsatisfactory decolorization performance, etc., so It is said that the current titanium dioxide technology replaces titanium dioxide by sacrificing some of the properties of titanium dioxide to a certain extent, and cannot completely replace titanium dioxide.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The mixed slurry of 30 parts of talc and 70 parts of dolomite with an average particle size of 1.5um after being ground by a peeling mill, enters the carbonization tank after the carbonization reaction for 5 minutes through the pressure pump, and the calcium hydroxide fine slurry in the carbonization reaction tank The concentration is controlled at 30 G / L, and the carbonization reaction is at 50°C. When the Ph value of the liquid in the carbonization tank reaches 7, the reaction is terminated and fed to the ball mill to mix with the titanium dioxide solution at high speed. The speed of the ball mill is 500r / min. When the material in the tank reaches 70°C, add 310 parts of a suspension medium (the medium is water) containing a mixture of lauric acid and oleic acid and a coupling agent of titanate and borate to carry out a modification reaction for 2 hours to obtain the Composite titanium dioxide material. The whiteness of the tested sample is 95, and the hiding power is ...

Embodiment 2

[0031] The mixed slurry of 40 parts of talc and 60 parts of dolomite with an average particle size of 1.5um after being ground by a stripping mill will enter the carbonization tank after the carbonization reaction for 15 minutes through the pressure pump, and the calcium hydroxide fine slurry in the carbonization reaction tank The concentration is controlled at 50 G / L, and the carbonization reaction is at 70°C. When the Ph value of the liquid in the carbonization tank reaches 7, the reaction is terminated and the material is fed to the ball mill to mix with titanium dioxide at high speed. The speed of the ball mill is 800r / min. When the material in the modified tank reaches 75°C, add 200 parts of a mixture containing linoleic acid and sodium linoleate and an aluminum-titanium composite coupling agent suspension medium (the medium is ethanol) for 30 minutes of modification reaction to obtain the present invention Composite TiO2 materials are described. The whiteness of the test...

Embodiment 3

[0034] The mixed slurry of 50 parts of talc and 50 parts of dolomite with an average particle size of 1.0um after being ground by a peeling mill will enter the carbonization tank after the carbonization reaction for 20 minutes through the pressure pump, and the calcium hydroxide fine slurry in the carbonization reaction tank The concentration is controlled at 40 G / L, and the carbonization reaction is at 70°C. When the Ph value of the liquid in the carbonization tank reaches 7, the reaction is terminated and the material is fed to the ball mill to mix with titanium dioxide at high speed. The speed of the ball mill is 800r / min. When the material in the modified tank reaches 65°C, add 500 parts of a suspension medium containing a mixture of lauric acid, behenic acid and sodium stearate, and a mixture of a silane coupling agent and an aluminum-zirconium coupling agent (the medium is ethanol) for 3 hours of modification reaction to obtain the composite titanium dioxide material desc...

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Abstract

The invention discloses a high-whiteness and high-performance composite titanium dioxide and a preparation method thereof, and particularly relates to a high brightness composite titanium dioxide preparation method capable of significantly enhancing the hiding power of the composite titanium dioxide. The specific process is realized by the following steps: grinding, carbonization reaction coating, ball milling, modification and the like. The invention provides the composite titanium dioxide with the surface covered with a long carbon chain anionic surfactant, the composite titanium dioxide powder surface is provided with (-C15-20 H30-40) long chain groups and alcohol groups possible to produce by coupling agent hydrolysis, auto-polymerization groups are formed by condensation reaction, so that a high surface activity material is grafted on the composite titanium dioxide surface. The active ultrafine composite titanium dioxide prepared by the invention can be used in plastics industry, especially in PVC (polyvinyl chloride) profiles, PVC pinch plate s and the plastics of the like.

Description

technical field [0001] The invention relates to a composite titanium dioxide with high whiteness and high performance and a preparation method thereof. In particular, the invention relates to a preparation method of the composite titanium dioxide which can significantly enhance the hiding power and high whiteness of the composite titanium dioxide. Background technique [0002] As a white pigment, titanium dioxide has superior density, dielectric constant and refractive index, and also has high hiding power, high color reduction power, high finish, high whiteness and stable weather resistance, and is also chemically inert and non-toxic. Toxic, harmless to the human body and other properties, so it has become the white pigment with the best performance so far, and has become an important white pigment in the national economy. It has been widely used in architectural coatings, plastics, paper, ink, chemical fiber, electric welding, enamel, daily chemical And more than 20 field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/06C09C3/08C08K9/10C08L27/06C08K3/22
Inventor 吴德贵江贤梁赵玉柱王征
Owner 丹东亿龙高科技材料有限公司
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