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Environmentally-friendly titanium type pigment and process for preparing pigment by adopting grafting bridging method

A titanium-based pigment, an environmentally friendly technology, applied in the field of chemical pigments, can solve the problems of difficult control of product stability, liquid phase agglomeration, complex process, etc., and achieve the effects of strong tinting strength, bright color, and simple preparation process

Active Publication Date: 2015-02-25
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the common disadvantage of the liquid phase method is that it is easy to cause agglomeration problems during the preparation process and affect the color. At the same time, due to the complicated process, the product stability is not easy to control, the yield is low, and the cost is relatively high.

Method used

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  • Environmentally-friendly titanium type pigment and process for preparing pigment by adopting grafting bridging method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1) Add 60g of titanium dioxide and 10g of antimony trioxide into 750ml of water, 20g of nickel nitrate into 200ml of water, and clarify the nickel nitrate solution for later use;

[0054] 2) Weigh 0.3g of the surfactant sodium hexametaphosphate, dissolve it, add it to the mixture of the above titanium dioxide, and disperse it for 0.5h;

[0055] 3) Weigh 4g of sodium hydroxide, 6g of potassium hydroxide, 1g of triethylenetetramine, and 1g of citric acid, dissolve the above four substances in 100ml of water to make a solution, add it to the mixed solution of titanium dioxide, and the temperature of the reaction system rises As high as 50-70°C, control the stirring rate at 400-600r / min, and the processing time is 3h;

[0056] 4) Add nickel nitrate solution slowly, and control the dropping rate to 10ml / min. After all the dropping is completed, adjust the pH value of the reaction system to about 8, and age for 2 hours, so that the nano-nickel hydroxide formed on the surface ...

Embodiment 2

[0060] 1) Add 80g of titanium dioxide and 15g of antimony trioxide into 1000ml of water, 15g of nickel nitrate into 150ml of water, and clarify the nickel nitrate solution for later use;

[0061] 2) Weigh 0.4g of the surfactant sodium hexametaphosphate, dissolve it, add it to the above titanium dioxide mixture, and disperse it for 0.5h;

[0062] 3) Weigh 5g of sodium hydroxide, 10g of potassium hydroxide, 0.5g of triethylenetetramine, and 0.5g of citric acid, dissolve the above four substances in 100ml of water to make a solution, add it to the mixed solution of titanium dioxide, and the reaction system The temperature is raised to 50-70°C, the stirring rate is controlled at 400-600r / min, and the processing time is 3h;

[0063] 4) Add nickel nitrate solution slowly, and control the dropping rate to 10ml / min. After all the dropping is completed, adjust the pH value of the reaction system to about 9, and age for 2 hours, so that the nano-nickel hydroxide formed on the surface of...

Embodiment 3

[0067] 1) Add 75g of titanium dioxide and 12g of antimony trioxide into 870ml of water, 25g of chromium nitrate into 250ml of water, and clarify the chromium nitrate solution for later use;

[0068] 2) Weigh 0.35g sodium hexametaphosphate solution, add it into the titanium dioxide mixture, and disperse it for 0.5h;

[0069] 3) Weigh 5g of sodium hydroxide, 10g of potassium hydroxide, 1.5g of triethylenetetramine, and 1.5g of citric acid, dissolve the above four substances in 100ml of water to make a solution, add it to the mixed solution of titanium dioxide, and the reaction system The temperature is raised to 50-70°C, the stirring rate is controlled at 400-600r / min, and the processing time is 2h;

[0070] 4) Slowly drop in the chromium nitrate solution, and control the dropping rate to 10ml / min. After all the dropping is completed, adjust the pH value of the reaction system to about 10, and age for 2 hours, so that the nano-chromium hydroxide formed on the surface of titanium...

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Abstract

The invention provides an environmentally-friendly titanium type pigment which comprises the following raw materials in weight part: 60-80 parts of titanium oxide, 15-40 parts of nitrate, 3-20 parts of a surface treating agent and 10-15 parts of antimony trioxide. The preparation method comprises the following steps: the surface treating agent used for activating the surface structure of the titanium oxide is added during the earlier-stage scattering of a pigment main material namely the titanium oxide in a solution, and a certain amount of nitrate is added to change the acid-base property of the system, so as to form a great quantity of hydroxyl radical chemical bonds on the surface of the titanium oxide; then coloring ions R<+> in the nitrate are deposited on the surface of the titanium oxide to form a compact coating film, and the Ti<->O<->R<+> chemical bond is formed, so that when the later-period high-temperature calcination is performed, the coloring ions uniformly get into titanium oxide crystal lattices to form a substitutional solid solution, and finally the pigment powder of which the particle diameter distribution interval is narrow, and the color is bright is obtained. According to the invention, the grating bridging method is adopted to prepare the environmentally-friendly titanium type pigment, and the obtained protect is excellent in quality, is remarkably lower than the mature product of the market in cost, and facilitates the industrial production.

Description

technical field [0001] The invention relates to the technical field of chemical pigments, in particular to an environmentally friendly titanium pigment prepared by MMO (metal oxide mixed phase method) and a method for preparing the environmentally friendly titanium pigment by grafting and bridging. Background technique [0002] The problem of environmental pollution has attracted more and more attention from the international community. The promotion of green and environmentally friendly products and the strengthening of energy conservation and emission reduction are important means to deal with the deteriorating environment and resource shortage. Inorganic pigments containing lead and cadmium occupy a large part of the market due to their bright color and low price. However, out of consideration for policies and environmental protection and health, seeking safe, non-toxic and harmless environmentally friendly pigments has become a popular choice for people. a consensus. On...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/36C09C3/06C09C3/08
Inventor 王晓伟陈建军檀满林李冬霜袁凯杰彭伟明
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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