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Process for preparing titanium dioxide with high weatherability

A technology of titanium dioxide and weather resistance, which is applied in the direction of chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems that the weather resistance of titanium dioxide cannot be improved, and achieve the effect of improving the weather resistance index and increasing the deposition rate

Inactive Publication Date: 2006-09-27
江苏镇钛化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method to carry out ZrO on titanium dioxide 2 coating, ZrO 2 The deposition rate on the surface of titanium dioxide is low, and it is often necessary to increase the ZrO 2 The theoretical addition amount to ensure the amount of deposition on the surface of titanium dioxide, otherwise the purpose of improving the weather resistance of titanium dioxide will not be achieved

Method used

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  • Process for preparing titanium dioxide with high weatherability
  • Process for preparing titanium dioxide with high weatherability
  • Process for preparing titanium dioxide with high weatherability

Examples

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Effect test

example 1

[0011] Get 700g of sulfuric acid method rutile type titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 14ml sodium hexametaphosphate solution (concentration is based on P 2 o 5 Calculated at 50g / l, the amount added is based on TiO 2 0.1% in total), 1.48ml of isopropanolamine (content 98%, density: 0.9650g / ml, the amount added is based on TiO 2 0.2% in total) as a dispersant, and dispersed for 60 minutes at a speed of 3000 rpm on a high-speed disperser. Add a certain amount of deionized water to the dispersed slurry and dilute to 300g / l, get 1000ml of it, heat up to 50°C, adjust PH=5.0 with dilute sulfuric acid solution (concentration is 10%, w / w), in Under this pH condition, add 15ml zirconium sulfate solution simultaneously (the concentration of zirconium sulfate is based on ZrO 2 Calculated at 100g / l, the amount added is based on TiO 2 0.5%) and sodium hydroxide solution, the time is 20 minutes, at p...

example 2

[0013] Get 700g of sulfuric acid method rutile type titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 28ml sodium hexametaphosphate solution (concentration is based on P 2 o 5 Calculated at 50g / l, the amount added is based on TiO 2 0.2%), 0.74ml isopropanolamine (content 98%, density: 0.9650g / ml, the amount added is based on TiO 2 0.1% in total) as a dispersant, and dispersed for 60 minutes at a speed of 3000 rpm on a high-speed disperser. Add a certain amount of deionized water to the dispersed slurry and dilute to 300g / l, get 1000ml of it, heat up to 55°C, adjust pH=4.5 with dilute sulfuric acid solution (concentration is 10%, w / w), and Under this pH condition, add 18ml zirconium sulfate solution simultaneously (the concentration of zirconium sulfate is based on ZrO 2 Calculated at 100g / l, the amount added is based on TiO 2 0.6%) and sodium hydroxide solution, the time is 20 minutes, at pH=4.5 aging...

example 3

[0015] Get 700g of sulfuric acid method rutile type titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 42ml sodium hexametaphosphate solution (concentration is based on P 2 o 5 Calculated at 50g / l, the amount added is based on TiO 2 0.3%), 1.48ml isopropanolamine (content 98%, density: 0.9650g / ml, the amount added is based on TiO 2 0.2% in total) as a dispersant, and dispersed for 60 minutes at a speed of 3000 rpm on a high-speed disperser. Add a certain amount of deionized water to the dispersed slurry and dilute to 200g / l, get 1000ml of it, heat up to 55°C, adjust pH=4.0 with dilute sulfuric acid solution (concentration is 10%, w / w), and Under this pH condition, add 16ml zirconium sulfate solution simultaneously (the concentration of zirconium sulfate is based on ZrO 2 Calculated at 100g / l, the amount added is based on TiO 2 0.8%) and sodium hydroxide solution, the time is 30 minutes, at pH=4.0 aging...

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Abstract

The invention discloses a preparing method of high weatherability titanium oxide, which is characterized by the following: adapting non-disposing surface disposal auric sulfate bloodstone titanium oxide and 0.1-0.3 percent hexametaphosphate, 0.1-0.2 percent isopropanolamine as dispense; dispersing titanium oxide paste; heating until 50-60 deg.c; adjusting pH value at 4.0-5.0 through dilute sulphuric acid solution; coating ZrO2 and Al2O3 separately; adding 0.5-1.0 percent zirconium sulfate and NaOH solution first; adding 2.0-4.5 percent Al2O3 and NaOH solution; washing; drying; adding 0.1-0.3 percent trimethylolpropane disposer; proceeding steam grinding to produce good weatherability titanium oxide.

Description

technical field [0001] The invention relates to a method for preparing titanium dioxide with high weather resistance, in particular to a method for coating the surface of titanium dioxide with zirconium aluminum and simultaneously using organic matter to prepare titanium dioxide with high weather resistance. Background technique [0002] Titanium dioxide is a white pigment with excellent performance, which can be widely used in the fields of coatings, plastics, papermaking, inks, catalysts and high-end cosmetics. However, titanium dioxide has a strong photochemical activity, which can easily cause bond breaking and degradation of the organic medium molecules in the application system, resulting in pulverization, loss of gloss, discoloration and other phenomena, affecting its performance. [0003] Surface treatment can shield the photoactive points on the surface of titanium dioxide, prevent titanium dioxide from directly contacting with organic matter in the dispersion mediu...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/06
Inventor 姚恒平刘俊王玲邱健亭奉辉
Owner 江苏镇钛化工有限公司
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