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Novel modified titanium dioxide white antirust pigment and preparing method thereof

A titanium dioxide and anti-rust pigment technology, applied in chemical instruments and methods, anti-corrosion coatings, inorganic pigment treatment and other directions, can solve the problems of chemical bond breakage, chemical degradation, high photochemical activity, and overall performance degradation, etc. Anti-corrosion performance, effect of improving compactness

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

[0023] Adopting 65 kilograms of crude titanium dioxide without surface treatment, adding 35 kilograms of deionized water to make a slurry with a concentration of 65%, adding 1 kilogram of PAM-100, 1 kilogram of methyltrimethoxysilane and 0.30 kilogram of triethanolamine, Use a disperser to disperse at a high speed at 1500 rpm to make it fully mixed and even. Then adjust the pH to 7, then add 5 kg of nano-calcium carbonate, dry the mixed powder, and perform anaerobic calcination at 350°C for 3 hours, then cool and pulverize to obtain highly effective anti-corrosion and easy-to-disperse white Pigment 72 kg.

example 2

[0025] Adopting 70 kilograms of crude titanium dioxide without surface treatment, adding 30 kilograms of deionized water to make a slurry with a concentration of 70%, adding 0.7 kilograms of PAM-100, 0.5 kilograms of methyltrimethoxysilane and 0.20 kilograms of triethanolamine, Use a disperser to disperse at a high speed at 1500 rpm to make it fully mixed and even. Then adjust the pH to 7, then add 5 kg of nano-silica, dry the mixed powder, and perform anaerobic calcination at 400°C for 3 hours, then cool and pulverize to obtain highly effective anti-corrosion and easy-to-disperse 77 kg of white paint.

example 3

[0027] 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 1 kilogram of PAM-100, 1 kilogram of methyltrimethoxysilane and 0.30 kilogram of triethanolamine, Use a disperser to disperse at a high speed at 1500 rpm to make it fully mixed and even. Then adjust the pH to 7, then add 5 kg of nano-calcium carbonate, dry the mixed powder, and perform anaerobic calcination at 350°C for 3 hours, then cool and pulverize to obtain highly effective anti-corrosion and easy-to-disperse white Pigment 67 kg.

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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, adjusting the pH value of the slurry material to 6-8, adding deionized water and 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 200-400 DEG C for 3-3.5 h, cooling and smashing to obtain a product. The vinyl alkoxy phosphate, the organosilicone coupling agent and the nanometer material 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. 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): C09C1/36C09C3/12C09C3/08C09C3/06C09D163/00C09D5/08
Inventor 李峰李焕
Owner ANHUI AOBANG NEW MATERIAL
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