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Composite titanium dioxide and preparation method thereof

A technology of titanium dioxide and oxidation reaction, applied in chemical instruments and methods, dyeing low molecular organic compound treatment, inorganic pigment treatment, etc., can solve the problems of unreachable, unsatisfactory decolorization power, insufficient weather resistance, etc.

Inactive Publication Date: 2017-10-17
JIANGSU TOP FINE NEW RAW MATERIAL CO LTD
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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 body that can replace the role of pure titanium dioxide in the market, such as reduced hiding power, insufficient weather resistance, unsatisfactory achromatic performance, etc., so the current To a certain extent, titanium dioxide technology replaces titanium dioxide by sacrificing some of the proper properties of titanium dioxide, 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 tremolite and 70 parts of dolomite with an average particle size of 1.5um after grinding by a peeling mill enters the oxidation tank after 5 minutes of oxidation reaction through a pressure pump, and the calcium hydroxide in the oxidation reaction tank The concentration of the fine pulp is controlled at 30G / L, and the oxidation reaction is at 50°C. When the Ph value of the liquid in the oxidation tank reaches 7, the reaction is terminated and the material is fed to the ball mill to mix with the titanium dioxide solution at a high speed. The speed of the ball mill is 500r / min. When drying 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 drying reaction for 2 hours to obtain the Composite titanium dioxide material. After testing, the whiteness of the sample is 95, the hiding powe...

Embodiment 2

[0030] The mixed slurry of 40 parts of tremolite and 60 parts of dolomite with an average particle size of 1.5um after grinding by a peeling mill enters the oxidation tank after 15 minutes of oxidation reaction through a pressure pump, and the calcium hydroxide in the oxidation reaction tank The concentration of the fine pulp is controlled at 50G / L, and the oxidation reaction is at 70°C. When the Ph value of the liquid in the oxidation 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 drying 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 drying reaction for 30 minutes to obtain the present invention described composite titania materials. After testing, the whiteness of the sample is 96, the hiding ...

Embodiment 3

[0032]The mixed slurry of 50 parts of tremolite and 50 parts of dolomite with an average particle size of 1.0um after grinding by a stripping mill enters the oxidation tank after 20 minutes of oxidation reaction through a pressure pump, and the calcium hydroxide in the oxidation reaction tank The concentration of fine pulp is controlled at 40G / L, and the oxidation reaction is at 70°C. When the Ph value of the liquid in the oxidation 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 drying 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 drying reaction for 3 hours to obtain the composite titanium dioxide material described in the present invention. Aft...

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Abstract

The invention discloses composite titanium dioxide with high brightness and high performance and a preparation method thereof, in particular to a preparation method of composite titanium dioxide capable of gaining significantly enhanced covering capacity and high brightness. The preparation method comprises the specific steps such as grinding, oxidative coating, ball-milling, and drying; the composite titanium dioxide with the surface covered with long-carbon-chain anionic surfactant is provided through the process and has (-C15-20H30-40) long-chain groups on the surface, a coupling agent may be hydrolyzed to produce alcoholic groups that are condensed into self-polymerized groups, and accordingly a high-surface-activity material is grated to the surface of the composite titanium dioxide; the superfine active composite titanium dioxide prepared herein may be applied to the plastic industry, particularly plastics such as PVC (polyvinyl chloride) and PVC gusset plates.

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, it relates to a method for preparing composite titanium dioxide that can significantly enhance the hiding power of composite titanium dioxide and has high whiteness. Background technique [0002] As a white pigment, titanium dioxide has superior density, dielectric constant and refractive index, and also has high hiding power, high decolorization power, high finish, high whiteness and stable weather resistance, and is also chemically inert and non-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. More than 20 fields. In particular, the paint industry is the largest user of titanium dioxide. The paint made of titanium dioxide has bright colors, high hiding power, stron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/04C09C3/08C09C3/06
CPCC09C1/0084C01P2006/19C01P2006/60C01P2006/90C09C3/006C09C3/041C09C3/063C09C3/08
Inventor 廖向阳谢宏伟朱贤荣
Owner JIANGSU TOP FINE NEW RAW MATERIAL CO LTD
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