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Novel modified titanium dioxide white antirust pigment and preparing method thereof

A technology of titanium dioxide and anti-rust pigments, applied in chemical instruments and methods, anti-corrosion coatings, inorganic pigment treatment, etc., can solve the problems of chemical bond energy breakage, chemical degradation, overall performance decline, and high photochemical activity, so as to improve the surface state and improve anti-corrosion. performance, the effect of improving stability and 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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  • Novel modified titanium dioxide white antirust pigment and preparing method thereof
  • Novel modified titanium dioxide white antirust pigment and preparing method thereof

Examples

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Comparison scheme
Effect test

example 1

[0020] Adopting 60 kilograms of crude titanium dioxide without surface treatment, adding 40 kilograms of deionized water to make a slurry with a concentration of 60%, adding 0.48 kilograms of PAM-100, 1 kilogram of methyltrimethoxysilane and 0.30 kilograms of triethanolamine, Use a disperser to disperse at a high speed at 1500 rpm to make it fully mixed and even. After the mixed powder was dried, it was anaerobically calcined at 300° C. for 3 hours, then cooled and pulverized to obtain 61 kg of highly effective anti-corrosion and easy-to-disperse white pigment.

example 2

[0022] 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, 0.5 kg of γ-methacryloxypropyl trimethoxy Silane and 0.20 kg of triethanolamine are dispersed at a high speed by a disperser at 1500 rpm to fully mix them evenly. After the mixed powder was dried, it was anaerobically calcined at 320° C. for 3 hours, then cooled and pulverized to obtain 71 kg of high-efficiency anti-corrosion and easy-to-disperse white pigment.

example 3

[0024] Use 80 kg of crude titanium dioxide without surface treatment, add 20 kg of deionized water to make a slurry with a concentration of 80%, add 0.8 kg of PAM-100, 0.5 kg of γ-methacryloxypropyl trimethoxy Silane and 0.30 kg of triethanolamine are dispersed at a high speed by a disperser at 1500 rpm to fully mix them evenly. After the mixed powder was dried, it was anaerobically calcined at 320° C. for 3 hours, and then cooled and pulverized to obtain 81 kg of highly effective anti-corrosion and easy-to-disperse white pigment.

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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, an organosilicone coupling agent and an alcohol amine type dispersant into the slurry material, dispersing at a high speed to fully mix the compounds, drying the material mixture that is fully mixed, performing oxygen-free calcination at 200-400 DEG C for 3-3.5 h, cooling and smashing to obtain a product. The vinyl alkoxy phosphate and the organosilicone coupling agent cover titanium dioxide particles. When a metal surface is coated with the pigment, a phosphate coating and a compact organosilicone coupling structure can be formed, thus effectively improving corrosion resistance of the pigment, reducing the using amount of the pigment and largely reducing the cost. In addition, acrylate groups and the coupling agent 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): C09C1/36C09C3/12C09C3/08C09C3/06C09D7/12C09D5/08
Inventor 李峰李焕
Owner ANHUI AOBANG NEW MATERIAL
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