Inorganic coating method for titanium dioxide

Abstract

The invention researches a novel process for Zr-Si-Al ternary inorganic coating for rutile titanium dioxide by using a sol-gel method. Through a uniform test design, the influences of various factors to the ternary inorganic coating performance of the rutile titanium dioxide are researched by a system, and the ternary inorganic coating effect of the rutile titanium dioxide is inspected through testing measures such as Nano-ZS, a Fourier infrared spectrometer (FT-IR), a scanning electron microscope (SEM), a transmission electron microscope (TEM), an energy dispersive spectrometer (EDS) and the like. The process for the ternary inorganic coating for the rutile titanium dioxide has the optimized formula as follows: 0.20% of dispersing agent, 0.6% of zirconium, 3.0% of silicon and 1.6% of aluminum, wherein the rotating speed is 340r / min.

Description

technical field [0001] The invention relates to a coating method, in particular to a coating method of titanium dioxide. Background technique [0002] Titanium dioxide (TiO 2 ) is the best white pigment, widely used in coatings, plastics, rubber, paper and inks and other fields [1-2] . However, due to the photocatalytic activity of titanium dioxide itself, when its surface is exposed to light waves with a wavelength less than or equal to 387.5nm, it will react with the H adsorbed on the surface 2 O, O 2 It acts to generate highly chemically active groups, which can rapidly oxidize organic matter, leading to oxidative degradation of the organic phase in plastics and coatings, resulting in embrittlement and pulverization [3-4] . At present, the surface treatment of high-grade titanium dioxide at home and abroad is generally coated with oxide units or two units of single zirconium, single silicon and single aluminum, which increases the hydrophilicity, powder resistance an...

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Problems solved by technology

[0003] However, the research on titanium dioxide inorganic coating mostly focuses on the coating process, structure and film morphology analysis. [9-10] , the effect on dispersion and surface potential has not been studied much [11] , especially the research on zirconium-silicon-aluminum ternary inorganic coated titanium dioxide has not been reported yet.

The traditional coating test plan has many conditions and a large number of tests, which is time-consuming and expensive to test. The research on the optimal coating process of rutile titanium dioxide is not comprehensive and has a great impact on the production cycle.

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