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Method for producing bionics TiO2 film by taking ammonium salt as inductive agent

A technology of inducer and film, applied in the field of bionic material preparation, can solve the problem of high cost and achieve the effect of low cost and simple preparation process

Active Publication Date: 2013-05-22
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used method for modifying surface morphology is to use polymer templates (Thin Solid Films 494 (2006) 228-233) to prepare porous TiO2 films. The pores formed in this way are located on the same plane, and specific The templating agent is relatively high in cost

Method used

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  • Method for producing bionics TiO2 film by taking ammonium salt as inductive agent
  • Method for producing bionics TiO2 film by taking ammonium salt as inductive agent
  • Method for producing bionics TiO2 film by taking ammonium salt as inductive agent

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1: (1) Add 2ml of acetylacetone to 20ml of absolute ethanol, then add 5ml of butyl titanate, and stir magnetically to obtain a mixed solution A. Add 1ml of deionized water to 20ml of absolute ethanol, and adjust the pH to 3-4 with nitric acid to obtain mixed solution B. Under magnetic stirring, slowly drop B into A.

[0021] (2) Continue to stir the mixed solution for 1 hour, then transfer it to a reaction kettle with an inner cup made of polytetrafluoroethylene, and age it at 80°C for 24 hours. Obtained TiO 2 The sol was diluted with three volumes of ethanol, then dissolved in ammonium nitrate (molar ratio, n (NH 4 NO 3 ) / n (TBT) = 2.7 / 1).

[0022] (3) The glass substrate that has been ultrasonically washed with absolute ethanol and distilled water and then dried is immersed in the above-mentioned aged sol for a while, and pulled up vertically at a speed of 6 cm / min. The operating conditions of the dipping and pulling process are: the relative humidity...

Embodiment 2

[0023] Embodiment 2: the add-on of ammonium nitrate among the embodiment 1 is adjusted to: molar ratio n (NH 4 NO 3 ) / n (TBT) = 1.3 / 1. At the same time, the operating conditions of the dipping and pulling process were changed to: the relative humidity of the air was 75%RH, and the temperature was 12°C. Other technological process is with embodiment 1. The resulting film was observed with a scanning electron microscope, and its photos after 4 coatings are listed in figure 2 , showing spherical particles with a secondary particle size distribution.

Embodiment 3

[0024] Embodiment 3: the add-on of ammonium nitrate among the embodiment 1 is adjusted to: molar ratio n (NH 4 NO 3 ) / n (TBT) = 1 / 1. Other technological process is with embodiment 1. The resulting film was observed with a scanning electron microscope, and its photos after 4 coatings are listed in image 3 , showing isolated multilayered stomata.

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Abstract

The invention discloses a method for producing a bionics TiO2 film by taking ammonium salt as an inductive agent, which belongs to the technical field of bionics material preparation. According to the invention, ammonium salt added in TiO2 precursor collosol used for coating a film can be taken as a promoter for coagulating water in air. A collosol fluid film is formed on a glass substrate in theprocesses of dipping-coating, wherein a medium ethanol enables a great volatilization, water in air is capable of coagulating on the surface of the fluid film due to existence of ammonium salt. By regulating the usage amount of ammonium salt or combining the adjustment of other process conditions, water content in the fluid film can be controlled in a large scope in a process of drying. When the water content in the fluid film is little, coagulated water is dispersed on the collosol in a water-drop shape; when the water content in the fluid film accounts for a large amount, the precursor is dispersed in a water phase in a oil-drop shape; after the film is completely dried, the bionics TiO2 films with two different surface states are respectively formed. The invention has the advantages ofsimple process and low cost.

Description

Technical field [0001] The present invention involves a TIO 2 The method of bionic preparation of thin-film surface shape, especially the method of using solitary-gel legal system with a micro-structured film of bionic surface.It belongs to the field of bionic materials preparation technology. Background technique [0002] TIO 2 The film has light -induced hydrophilicity.Using this characteristic, apply a layer of TIO on the surface of the windshield and rearview mirror, building window glass, toilet mirror, measuring glass, etc. 2 The film can make the surface super -affordable.At this time, when the water in the air is condensed on the surface, it can spread into a uniform water film instead of forming a decentralized water droplet that affects the sight, so that the glass can be maintained.The surface of the glass has the functions of waterproof mist and anti -glare.TIO at the same time 2 The film also has the function of photocatalytic degradation organic pollutants, so TIO 2...

Claims

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Application Information

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IPC IPC(8): C03C17/23
Inventor 董如林方敏陈智栋金长春王文昌
Owner 溧阳常大技术转移中心有限公司
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