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Preparation method of inorganic and organic coated titanium dioxide

A technology of titanium dioxide and titanium dioxide slurry, which is applied in the field of materials, can solve problems such as environmental pollution, and achieve the effects of no environmental pollution, mild reaction conditions, and simple operation

Inactive Publication Date: 2018-01-05
BAOJI YONGSHENGTAI TITANIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of inorganic and organic coated titanium dioxide, which solves the problem that the existing organic treatment agent of titanium dioxide pollutes the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1: Weigh titanium dioxide powder, add water to make a suspension with a concentration of 20wt%, add sodium hexametaphosphate to the suspension to obtain a mixed solution, and the P in sodium hexametaphosphate 2 o 5 with TiO 2 The mass ratio of the mixture is 0.1:100, and the pH of the mixture is adjusted to 9 with NaOH, and the titanium dioxide slurry is obtained after high-speed dispersion for 30 minutes;

[0030] Step 2, first heat up the titanium dioxide slurry obtained in step 1 to 70°C, use H 2 SO 4 Adjust the pH value to 8, let the titanium dioxide slurry stand for 30 minutes, and then add NaAlO to the slurry 2 Solution and HCl, keep the pH of the mixed slurry at 8 and continue to stir for 50 minutes to obtain a mixed slurry, then add lanthanum oxide to the mixed slurry for aging for 30 minutes, adjust the pH of the solution to 6.5 with HCl, continue to stir for 15 minutes, suction filter, and wash with water to obtain the package Aluminum titanium dioxid...

Embodiment 2

[0035] Step 1: Weigh titanium dioxide powder, add water to make a suspension with a concentration of 30wt%, add sodium hexametaphosphate to the suspension to obtain a mixed solution, and the P in sodium hexametaphosphate 2 o 5 with TiO 2 The mass ratio of the mixture is 0.2:100, and the pH of the mixture is adjusted to 9.5 with NaOH, and the titanium dioxide slurry is obtained after high-speed dispersion for 35 minutes;

[0036] Step 2, first heat up the titanium dioxide slurry obtained in step 1 to 76°C, use H 2 SO 4 Adjust the pH value to 8.5, let the titanium dioxide slurry stand for 38 minutes, and then add NaAlO to the slurry 2 Solution and HCl, keep the pH of the mixed slurry at 8 and continue to stir for 58 minutes to obtain a mixed slurry, then add lanthanum oxide to the mixed slurry for aging for 39 minutes, adjust the pH of the solution to 6.5 with HCl, continue to stir for 26 minutes, suction filter, and wash with water to obtain the package Aluminum titanium di...

Embodiment 3

[0041] Step 1: Weigh titanium dioxide powder, add water to make a suspension with a concentration of 35wt%, add sodium hexametaphosphate to the suspension to obtain a mixed solution, and the P in sodium hexametaphosphate 2 o 5 with TiO 2 The mass ratio of the mixture is 0.3:100, and the pH of the mixture is adjusted to 9 with NaOH, and the titanium dioxide slurry is obtained after high-speed dispersion for 45 minutes;

[0042] Step 2, first heat up the titanium dioxide slurry obtained in step 1 to 80°C, use H 2 SO 4 Adjust the pH value to 8.5, let the titanium dioxide slurry stand for 45 minutes, and then add NaAlO to the slurry 2 Solution and HCl, keep the pH of the mixed slurry at 9 and continue to stir for 68 minutes to obtain the mixed slurry, then add lanthanum oxide to the mixed slurry for aging for 40 minutes, adjust the pH of the solution to 7 with HCl, continue to stir for 20 minutes, suction filter, wash with water to obtain the package Aluminum titanium dioxide;...

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PUM

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Abstract

The invention discloses a preparation method of inorganic and organic coated titanium dioxide. The preparation method comprises the following steps: mixing titanium dioxide and sodium hexametaphosphate to obtain titanium dioxide slurry; then adding a NaAlO2 solution into the titanium dioxide slurry to obtain aluminum coated titanium dioxide; then carrying out organic coating treatment on the aluminum coated titanium dioxide by utilizing methyl hydro-silicone oil and hexamethyldisilazane. According to the preparation method disclosed by the invention, surface coating treatment is carried out onthe titanium dioxide through adjusting a material ratio or technological parameters and the dispersion performance of the obtained titanium dioxide in alkyd resin reaches 20; the cost of adopted organic matters is low and the preparation method has no pollution to the environment.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a preparation method of inorganic and organic coated titanium dioxide. Background technique [0002] Titanium dioxide is widely used in pigments (paints, rubber, plastics, paper, etc.), photocatalysts, photoelectric cells, and ultraviolet shielding due to its stable chemical properties, good whiteness, tinting strength and hiding power, and good heat resistance. medicines and other fields. Titanium dioxide is easy to agglomerate due to polar adsorption or moisture absorption, and it is difficult to disperse in other systems. Therefore, it is very important to coat titanium dioxide. [0003] Treatments with polydimethylsiloxanes, polyorganosiloxanes and carbonated fatty acid derivatives are known in the art in which non-reactive organics interact partially or completely with metalorganic surfaces through van der Waals and / or electrostatic interactions. interaction occurs. Sinc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/06C09C3/08C09C3/12
Inventor 文锐高鹏涛刘宝权
Owner BAOJI YONGSHENGTAI TITANIUM IND