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Illite-based composite titanium dioxide and preparation method thereof

A composite titanium dioxide and illite technology, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems of insufficient covering power, low weather resistance, and insufficient bonding, and achieve strong covering power. , low cost, low oil absorption effect

Active Publication Date: 2013-12-18
丹东亿龙高科技材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method utilizes the existing calcium carbonate production process, and industrial production can be realized after adding some processes. As long as the composite pigment meets the performance requirements, the application prospect is very promising, but the combination of calcium carbonate and titanium dioxide in the composite titanium dioxide prepared by this method is not enough. Strong, not strong enough in hiding power, and not high in weather resistance

Method used

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  • Illite-based composite titanium dioxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 60g of illite with a particle size of 1250 mesh and a Hunter whiteness of 86, add 600g of water to make a 100g / L slurry, add 15g of sodium hexametaphosphate solution with a mass fraction of 20%, and stir. Keep stirring, add 210ml of 100g / L titanium sulfate solution, adjust the pH value of the slurry to 1.0, and make a composite titanium dioxide slurry with nanoscale titanium dioxide deposited on the surface.

[0035] Beat and wash the deposited composite titanium dioxide slurry with deionized water at 40-50°C, and filter to obtain a filter cake;

[0036] The filter cake obtained by washing and filtering was calcined at 700 degrees for 6 hours, and then pulverized after calcining to obtain illite-based composite titanium dioxide.

Embodiment 2

[0038] Weigh 70g of illite with a particle size of 2000 mesh and a Hunter whiteness of 89, add 350g of water to make a 200g / L slurry, add 1.75g ​​of sodium silicate solution with a mass fraction of 20%, and stir. Keep stirring, add 68ml of 200g / L titanium tetrachloride solution, adjust the pH value of the slurry to 2.0, and make a composite titanium dioxide slurry with nanoscale titanium dioxide deposited on the surface.

[0039] Beat and wash the deposited composite titanium dioxide slurry with deionized water at 40-50°C, and filter to obtain a filter cake;

[0040]The washed filter cake obtained by washing and filtering is calcined at 800 degrees for 8 hours, and then pulverized after calcining to obtain illite-based composite titanium dioxide.

Embodiment 3

[0042] Weigh 65g of illite with a particle size of 1500 mesh and a Hunter whiteness of 87, add 130g of water to make a 500g / L slurry, add 6.5g of sodium hexametaphosphate solution with a mass fraction of 20%, and stir. Keep stirring, add 220ml of 100g / L titanyl sulfate solution, adjust the pH value of the slurry to 3.0, and make a composite titanium dioxide slurry with nanoscale titanium dioxide deposited on the surface.

[0043] Beat and wash the deposited composite titanium dioxide slurry with deionized water at 40-50°C, and filter to obtain a filter cake;

[0044] The filter cake obtained by washing and filtering was calcined at 700°C for 10 hours, and then pulverized after calcining to obtain illite-based composite titanium dioxide.

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Abstract

The invention provides illite-based composite titanium dioxide and a preparation method thereof. The composite titanium dioxide is obtained by coating the surface of illite with nano titanium dioxide particles, and is prepared from the following components in parts by weight: 60-80 parts of illite, 15-35 parts of titanium dioxide and 0.5-5 parts of dispersing agents. The preparation method comprises the steps of depositing, washing and filtering and calcining. The prepared composite titanium dioxide has the characteristics of low cost, high whiteness, strong covering power, low oil absorption and low water-soluble salt value.

Description

technical field [0001] The invention relates to a composite titanium dioxide and a preparation method thereof. Background technique [0002] Titanium dioxide (TiO 2 ), the English name is Titanium dioxide, which is an important inorganic chemical raw material, non-toxic and harmless to the body. When titanium dioxide is used as a white pigment, it is called titanium dioxide (Titanium dioxide white pigment, Titanium white). Titanium dioxide is the most important white pigment, accounting for 80% of all white pigments used. 90% of titanium resources are used to produce titanium dioxide, and the remaining 10% are used to produce metal titanium, titanium alloys and ceramics. Titanium dioxide has become one of the three largest commodities in the world's inorganic chemical products, second only to synthetic ammonia and phosphoric acid. TiO 2 As a white pigment, it has extremely high opacity and excellent optical performance and pigment properties. Therefore, it is widely use...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/06
Inventor 曹国军齐涛
Owner 丹东亿龙高科技材料有限公司
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