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Method for preparing high-performance rutile titanium dioxide pigment

A high-efficiency technology of rutile titanium dioxide, which is applied in the field of pigments, can solve problems such as uneven performance of titanium dioxide, poor dispersion of titanium dioxide, and affecting performance, and achieve the effect of improving the covering effect, stable performance, and easy realization

Inactive Publication Date: 2016-04-13
常熟市环虹化工颜料厂
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Problems solved by technology

However, the titanium dioxide obtained by the current treatment method has defects such as uneven film and poor dispersion of titanium dioxide, and the performance of the coated titanium dioxide is uneven and unstable, which affects its performance

Method used

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Embodiment 1

[0020] The present invention discloses a preparation method of high-efficiency rutile titanium dioxide pigment, mainly forming a silicon dioxide coating layer and an aluminum coating layer successively on the surface of the rutile titanium dioxide pigment, and the specific steps are as follows:

[0021] (1) Slurry treatment: dehydrate and concentrate the chlorinated titanium dioxide to a mass concentration of 380-450g / L, then put it into a ball mill, and then add a dispersant polymer that accounts for 2-3% of the mass of the chlorinated titanium dioxide. Ethylene glycol octyl phenyl ether, high-speed dispersion and grinding for 10-15 minutes under the condition of a material-ball ratio of 5:1 and a rotational speed of 150-300r / min;

[0022] (2) Preparation of silica pre-coating layer: add SiO to the slurry treated in step (1) 2 solution to make SiO 2 The amount of the solution added is 0.5-1% of the mass of the titanium dioxide, after mixing and stirring evenly, aging at room...

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Abstract

The invention discloses a method for preparing a high-performance rutile titanium dioxide pigment. The method comprises the following steps: a step (1) of performing slurry treatment, a step (2) of preparing a silicon dioxide pre-coating layer, a step (3) of preparing a silicon dioxide coating layer, a step (4) of preparing an aluminum pre-coating layer; a step (5) of preparing an aluminum coating layer; and a step (6) of obtaining the finished product. The method for preparing the high-performance rutile titanium dioxide pigment is novel in conception and easy to implement, the uniform dispersion of the rutile titanium dioxide and coating evenness of the coating layers are achieved through the pre-coating and coating two-step method, so that the coated rutile titanium dioxide pigment is uniform in texture and stable in performance, the covering effect of the product is improved effectively, and the comprehensive using performance of the pigment is improved.

Description

technical field [0001] The invention relates to the field of pigments, in particular to a preparation method of high-efficiency rutile titanium dioxide pigment. Background technique [0002] Titanium dioxide, a white pigment whose main component is titanium dioxide, is widely used in coatings, plastics, papermaking, ink and chemical fiber and other fields. Due to the photocatalytic activity of titanium dioxide, especially rutile titanium dioxide, titanium dioxide without surface treatment will catalyze and degrade the organic components in contact with it during use, causing the coating to lose gloss and pulverize and fall off, seriously reducing the various properties of the product. performance and service life. Inorganic coating is an important measure to improve the physical and chemical properties of titanium dioxide products. However, the titanium dioxide obtained by the current treatment method has defects such as uneven film and poor dispersion of titanium dioxide,...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/06C09C3/00C09C3/04
CPCC09C1/3692C09C1/3607C09C1/3623C09C1/3661C09C3/00C09C3/006C09C3/04C09C3/06
Inventor 范建平
Owner 常熟市环虹化工颜料厂
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