Unlock instant, AI-driven research and patent intelligence for your innovation.

Process method for ceric oxide-coated rutile type titanium dioxide and coated titanium dioxide

A rutile-type titanium dioxide, a technology of a process method, applied in chemical instruments and methods, inorganic pigment processing, fibrous fillers, etc., can solve problems such as lack of simplicity and practicability

Active Publication Date: 2015-11-11
XIANGTAN UNIV +1
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, based on the idea of ​​using cerium oxide to form an oxide film on the surface of rutile titanium dioxide, there is currently a lack of related technical solutions that are simple, practical, and can guarantee ideal coating effects.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process method for ceric oxide-coated rutile type titanium dioxide and coated titanium dioxide
  • Process method for ceric oxide-coated rutile type titanium dioxide and coated titanium dioxide
  • Process method for ceric oxide-coated rutile type titanium dioxide and coated titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A process for coating rutile titanium dioxide with ceria is provided, comprising the following steps:

[0043] S1. Take rutile-type titanium dioxide, add deionized water, constant volume, and form a slurry;

[0044] S2. Weigh sodium hexametaphosphate and add it to the slurry, and perform ultrasonic dispersion at the temperature of the water bath to obtain a dispersion;

[0045] S3. Add cerium nitrate solution to the dispersion obtained in step S2, and stir evenly to obtain a mixture;

[0046] S4. Add sodium hydroxide solution dropwise to the mixture obtained in step S3, adjust the pH value, and age to obtain the coated slurry;

[0047] S5. Suction filter the coated slurry obtained in step S4, wash the filter cake, and detect the conductivity;

[0048] S6. drying the filter cake obtained in step S5.

[0049] Specifically, combined with the use of experimental instruments and equipment, the operation process is as follows: Weigh rutile titanium dioxide and add it to a ...

Embodiment 2

[0051] Others are the same as in Example 1, and the difference is that the concentration of the slurry in the S1 step is 400g L –1 .

Embodiment 3

[0053]Other is with embodiment 1, and difference is that the add-on of sodium hexametaphosphate described in S2 step is 0.2%%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a process method for ceric oxide-coated rutile type titanium dioxide and coated titanium dioxide. By creatively using sodium hexametaphosphate as a dispersant, rutile type titanium dioxide which is better coated on the surface is obtained by making scientific and meticulous research and determination on key factors such as the dropping rate, the usage of the dispersant, the coating quantity, the rotating speed and the like, combining an orthogonal experiment and optimizing the experimental steps and operating processes. A lot of long-term experiences verify that the obtained cerium oxide coating is excellent in performance for the rutile type titanium dioxide, the layering phenomenon does not happen if being dispersed in deionized water for more than 25 days, and the degradability in an ultraviolet degradation experience of rhodamine b does not exceed 0.2%.

Description

technical field [0001] The invention relates to the technical field of coated titanium dioxide production, and more specifically, relates to a process method for coating cerium dioxide-coated rutile-type titanium dioxide and the coated titanium dioxide. Background technique [0002] Rutile titanium dioxide is the world's best white inorganic pigment with strong adhesion and exceptional anti-aging ability. It is widely used in plastics, printing inks, papermaking, automotive paints, outdoor coatings and other industries. However, on the one hand, the rutile titanium dioxide without surface treatment has poor dispersion and is prone to agglomeration. On the other hand, the rutile titanium dioxide particles have photocatalytic activity, and it is easy to deteriorate the weather resistance of the material and cause chalking under ultraviolet irradiation. Phenomenon. [0003] Inorganic surface treatment is to coat a layer of inorganic hydrated oxide on the surface of titanium di...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09C1/36C09C3/06
Inventor 刘平乐侯熠徽侯清麟陈隆
Owner XIANGTAN UNIV