Composite titania material and its prepn and application

A technology of titanium dioxide and composite materials, which can be used in the addition of inorganic compounds, textile and papermaking, fiber raw material processing, etc.

Active Publication Date: 2006-08-02
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the fine titanium dioxide particles are not easy to attach to the pulp fib...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 150g of deionized water to 100g of talcum powder with an average particle size of 0.3μm, and at the same time add 0.5g of sodium polyacrylate for beating; add deionized water to dilute to a solid content of 100g / L, heat the slurry to 80°C, and The water glass of 20g and the aqueous hydrochloric acid solution of 10% by weight concentration are added in the slurry, and the pH value of the control slurry is at 9 until the dropwise addition is complete. Keeping the temperature of the slurry constant, 30g of aluminum sulfate (Al 2 (SO 4 ) 3 18H 2 (0) and 15% NaOH are added in the slurry until the dropwise addition is complete. The slurry was filtered, and the filter cake was dried at 120°C for 3 hours to obtain 98g of powder;

[0034] Beat the 98g powder coated with the first protective layer with 150g deionized water, add 0.2g sodium hexametaphosphate at the same time, add deionized water to dilute to a solid content of 70g / L, heat the slurry to 85°C, Add 50ml of N...

Embodiment 2

[0038] Add 120g of deionized water to 100g of kaolin with an average particle size of 0.8μm, and at the same time add 0.4g of sodium polyacrylate for beating, add deionized water to dilute to a solid content of 100g / L, heat the slurry to 80°C, and add 25g of water Add glass and 10% sulfuric acid aqueous solution into the slurry, and control the pH value of the slurry at 8.5 until the dropwise addition is complete. Keeping the temperature of the slurry constant, 25g of aluminum sulfate (Al 2 (SO 4 ) 3 18H 2 (2) and an aqueous solution of KOH with a weight concentration of 15% was added to the slurry, the pH of the slurry was controlled to be 9, the slurry was filtered, and the filter cake was dried at 150° C. for 2 hours to obtain 96 g of powder.

[0039] Beat the 96g powder coated with the isolation layer with 150g deionized water, add 0.5g triethanolamine at the same time, add deionized water to dilute to a solid content of 90g / L, heat the slurry to 80°C, and make 50ml of ...

Embodiment 3

[0042] Add 100g of deionized water to 100g of heavy calcium carbonate with an average particle size of 2.0μm, and at the same time add 0.5g of sodium polyphosphate for beating, add deionized water to dilute to a solid content of 120g / L, and heat the slurry to 95°C 35g sodium silicate and 10% hydrochloric acid aqueous solution are added in the slurry, and the pH value of the slurry is controlled at 7.5 until the dropwise addition is completed. Keep the temperature of the slurry constant, add 20g of sodium aluminate and 10% hydrochloric acid aqueous solution to the slurry, control the pH value of the slurry to 11, filter the slurry, and dry the filter cake at 150°C for 1 hour , to obtain powder 97g.

[0043] Beat the 97g powder coated with the isolation layer with 150g deionized water, add 0.2g sodium hexametaphosphate at the same time, add deionized water to dilute to a solid content of 110g / L, heat the slurry to 83°C, and 50ml Add 200g / L titanium tetrachloride and 15% NaOH aq...

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PUM

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Abstract

The present invention discloses one kind of composite titania material and its prepare process and application. The composite titania material includes a carrier, a first coating layer and a second coating layer outside the first coating layer, and may have a third outmost layer. The first coating layer is one compact isolating layer to block the immigration of impurity elements in the carrier to the surface layer titania crystal lattice and to ensure the integrity of the titania crystal lattice; the second coating layer is functional layer of titania with high whiteness and high refractive index; and the third outmost layer can deactivate surface titania, eliminate the photocatalysis of titania and raise the weather resistance and surface brightness of the composite titania material. The composite titania material is used in filling and coating paper with greatly lowered added amount and thus lowered cost.

Description

technical field [0001] The invention relates to a titanium dioxide composite material and its preparation technology, in particular to a composite material with titanium dioxide coated on the surface of an inorganic powder material used for paper-making fillers and coating pigments, and a process for preparing the material. Background technique [0002] In recent years, the development of digital printing technology, office automation and personal computers has put forward newer and higher requirements for paper. The annual demand for paper is growing at a double-digit rate, which plays a very important role in the construction of the national economy. effect. In addition to pulp fiber quality, a very important factor affecting the quality of paper is the filler and surface coating of the paper. It requires paper to have a certain degree of gloss, smoothness and printing adaptability. Therefore, paper fillers and coating pigments play a critical role. [0003] In the pape...

Claims

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Application Information

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IPC IPC(8): D21H17/68D21H17/70D21H21/50
Inventor 施晓旦王彦华
Owner SHANGHAI DONGSHENG NEW MATERIALS
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