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Novel titanium dioxide white antirust pigment and preparing method thereof

A technology of titanium dioxide and anti-rust pigments, applied in the direction of pigment slurry, fibrous filler, dyeing low-molecular-weight organic compounds, etc., can solve the problems of chemical bond breakage, chemical degradation, overall performance decline, high photochemical activity, etc., to improve the surface state , Improve the anti-corrosion performance, improve the effect of stable dispersion

Inactive Publication Date: 2014-12-10
ANHUI AOBANG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, uncoated and modified titanium dioxide particles have high photochemical activity, which can easily cause chemical bond energy breakage and chemical degradation of the organic medium in the application system, resulting in a decline in overall performance and limited applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Use 60 kg of crude titanium dioxide without surface treatment, add 40 kg of deionized water to make a slurry with a concentration of 60%, add 0.48 kg of PAM-100 and 0.30 kg of triethanolamine, and use a disperser to disperse at a high speed at 1500 rpm Make it well mixed. Adjust the pH value to 7, add 5 kg of nano-calcium carbonate, and disperse at a high speed at 1500 to make it fully mixed. After the mixed powder was dried, it was anaerobically calcined at 240° C. for 1 hour, then cooled and pulverized to obtain 66 kg of highly effective anti-corrosion and easy-to-disperse white pigment.

example 2

[0023] Use 70 kg of crude titanium dioxide without surface treatment, add 30 kg of deionized water to make a slurry with a concentration of 70%, add 1 kg of PAM-100 and 0.40 kg of triethanolamine, and use a disperser to disperse at a high speed at 1500 rpm Make it well mixed. Adjust the pH value to 7, add 6 kg of nano-silica sol, and disperse at a high speed at 1500 to make it fully mixed. After the mixed powder was dried, it was anaerobically calcined at 270° C. for 1 hour, and then cooled and pulverized to obtain 77 kg of highly effective anti-corrosion and easy-to-disperse white pigment.

example 3

[0025] Use 60 kg of crude titanium dioxide without surface treatment, add 40 kg of deionized water to make a slurry with a concentration of 60%, add 1.5 kg of PAM-100 and 0.30 kg of diethanolamine, and use a disperser to disperse at a high speed at 1500 rpm Make it well mixed. Adjust the pH value to 7, add 5 kg of nano silicon dioxide, and disperse at a high speed at 1500 rpm to make it fully mixed. After the mixed powder was dried, it was anaerobically calcined at 240° C. for 1.5 hours, then cooled and pulverized to obtain 81 kg of highly effective anti-corrosion and easy-to-disperse white pigment.

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PUM

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Abstract

The invention discloses novel titanium dioxide white antirust pigment and a preparing method thereof. The method includes adding deionized water into a titanium dioxide crude product not subjected to surface treatment to obtain a slurry material, adding vinyl alkoxy phosphate and an alcohol amine type dispersant into the slurry material, dispersing at a high speed to fully mix the compounds, adjusting the pH value to 6-8, adding a nanometer material, dispersing at a high speed to fully mix the compounds, drying the material mixture that is fully mixed, performing oxygen-free calcination at 200-300 DEG C for 1-1.5 h, cooling and smashing to obtain a product. The vinyl alkoxy phosphate and the nanometer material cover titanium dioxide particles. When a metal surface is coated with the pigment, the phosphate group and the nanometer material can largely improve compactness of coatings and the phosphate group can form a phosphate coating with a substrate, thus effectively improving corrosion resistance of the pigment. In addition, acrylate groups exist on surfaces of the particles, thus effectively improving the dispersion stability of the pigment in an organic medium.

Description

technical field [0001] The invention relates to a white pigment and a preparation method thereof, in particular to a novel modified titanium dioxide white antirust pigment and a preparation method thereof. Background technique [0002] Titanium dioxide is a white pigment with excellent performance, which is widely used in coatings, inks, plastics, papermaking and other fields. However, uncoated and modified titanium dioxide particles have high photochemical activity, which can easily cause chemical bond energy breakage and chemical degradation of the organic medium in the application system, resulting in a decline in overall performance and limited applications. The main manifestations on coating inks are chalking, loss of gloss, yellowing, etc. At the same time, the surface of titanium dioxide is very hydrophilic, so the modification of its surface is the most effective way to improve its stable dispersion in organic media. At the same time, while improving the hydrophili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C09C1/36C09C3/08
Inventor 李峰李焕
Owner ANHUI AOBANG NEW MATERIAL
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