Inorganic coating method for titanium dioxide

An inorganic coating, titanium dioxide technology, applied in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve problems such as time-consuming experiments, little research on the influence of dispersibility and surface potential, and production cycle influence, etc. To achieve the effect of less number of experiments, reduced workload of experiments, and strong representativeness

Inactive Publication Date: 2013-07-24
HUNAN UNIV OF TECH
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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 co...

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  • Inorganic coating method for titanium dioxide
  • Inorganic coating method for titanium dioxide
  • Inorganic coating method for titanium dioxide

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Embodiment 1-7

[0016] References [7] The method is to weigh titanium dioxide and add it to a clean volumetric flask, add deionized water to constant volume, then pour the prepared slurry into a four-necked flask and fix the four-necked flask on the iron stand, install the stirring rod and the separator Press the funnel; turn on the power supply, pipette an appropriate amount of sodium hexametaphosphate and add it to the slurry, put the calibrated pH meter into the four-necked flask solution to measure the pH value of the slurry, control the pH value, and turn on the stirrer at the temperature of the water bath Disperse; pipette the coating agent into the constant pressure funnel, and the coating agent in the constant pressure funnel is evenly added dropwise to the reaction slurry. When the coating agent is added dropwise, the pH value is well controlled; Aging at water bath temperature for 2 hours; wrapping zirconium film, aging for 2 hours, then covering silicon film, aging for 2 hours, fin...

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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...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/06
Inventor 侯清麟段海婷侯熠徽饶居华陈建华刘重人李恩明李实秾彭祥燕罗炽罗倪杨雪珍陈水清
Owner HUNAN UNIV OF TECH
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