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Anti-fog self-cleaning film and method for preparing same

A self-cleaning film, anti-fog technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of unsatisfactory anti-fog effect, high technical requirements for film sticking, and high price, and achieves increased specific surface area and cost. Low, high utilization effect

Inactive Publication Date: 2009-12-02
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing anti-fog film is mainly an organic hydrophobic film, but the technical requirements of the film are high, the price is expensive, and it is easy to age
Some TiO in literature reports 2 The anti-fog film is mainly used in TiO 2 Doped with metal oxides in TiO to improve its photoresponse range so that it has anti-fog performance; or in TiO 2 Adding organic polymers directly to the TiO 2 The microstructure of the above two methods is not particularly ideal in terms of anti-fog effect

Method used

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  • Anti-fog self-cleaning film and method for preparing same

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Effect test

Embodiment 1

[0030] Embodiment 1: Preparation of PEG400-Fe 2 o 3 / SiO 2 / TiO 2 Organic-ternary inorganic composite sol.

[0031] in TiO 2 Add 20% (mole percentage composition, with respect to pure TiO in the sol 2 , the same below) SiO 2 Sol, 0.25% Fe 2 o 3 Sol and 2.5g·L -1 PEG400, stirred to make it evenly mixed, let it stand for a day to obtain PEG400-Fe 2 o3 / SiO 2 / TiO 2 Organic-ternary inorganic composite sol. With glass as the base material, the impregnation-pulling method is adopted, with a temperature of 10mm·s -1 The pulling speed coats the glass surface with a film. After the coating film is completed, dry it in an oven at 100°C for 10 minutes, and then dry it in a muffle furnace at 1°C·min -1 The heating rate was set at 350°C for 7 hours to prepare the desired film, which was denoted as T1.

Embodiment 2

[0032] Embodiment 2: Preparation of PEG10000-Fe 2 o 3 / SiO 2 / TiO 2 Organic-ternary inorganic composite sol.

[0033] in TiO 2 Add 20% SiO to the sol 2 Sol, 0.25% Fe 2 o 3 Sol and 2.5g·L -1 PEG10000, stir vigorously to make it evenly mixed, and let it stand for a day to obtain PEG10000-Fe 2 o 3 / SiO 2 / TiO 2 Organic-ternary inorganic composite sol. Using the ceramic flat plate as the base material, the impregnation-pulling method was adopted, at 5mm·s -1 The pulling speed coats the glass surface with a film. After the coating film is completed, dry it in an oven at 80°C for 30 minutes, and then dry it in a muffle furnace at 3°C ​​min -1 The heating rate is set at 400°C for 5 hours to prepare the desired film, which is denoted as T2.

Embodiment 3

[0034] Embodiment 3: Preparation of PEG1000-Fe 2 o 3 / SiO 2 / TiO 2 Organic-ternary inorganic composite sol.

[0035] in TiO 2 Add 20% SiO to the sol 2 Sol, 0.25% Fe 2 o 3 Sol and 2.5g·L -1 PEG1000, stir vigorously to make it evenly mixed, and let it stand for a day to obtain PEG1000-Fe 2 o 3 / SiO 2 / TiO 2 Organic-ternary inorganic composite sol. Using glass as the base material, using the dipping-pulling method, at 1mm·s -1 The pulling speed coats the glass surface with a film. After the coating is completed, dry it in a microwave oven on low heat for 5 minutes, and then place it in a muffle furnace at 5°C min -1 The heating rate is set at 500°C for 2 hours to prepare the desired film, which is denoted as T3.

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Abstract

The invention provides an anti-fog self-cleaning film and a method for preparing the same. The film is characterized in that: Fe2O3, SiO2 and TiO2 are mixed to form a ternary inorganic nanometer composite sol according to the molar ratio of (0.1-0.4):(10-40):100, and a water soluble macromolecular substance of which the molecular weight is between 400 and 10,000 is added to the composite sol according to the concentration of (0.1-4.0)g.L. The anti-fog self-cleaning film can achieve the advantages of super-hydrophilicity, strong hydrophilic retention capability, high transmittance, high photocatalytic activity, high capability of adhering to base materials, and good anti-fog self-cleaning effects.

Description

technical field [0001] The invention relates to the preparation of an anti-fog self-cleaning film, more specifically, an anti-fog self-cleaning film that can be applied to solid materials such as ordinary glass, building glass, automobile glass, glasses, ceramics, and steel that can be baked method of preparation. Background technique [0002] When a vehicle is driving on a rainy day, the water droplets on the windshield will affect the line of sight; in wet weather, especially in winter, a layer of fog often forms on the windshield and rearview mirror, which affects the driver's line of sight and poses a driving safety hazard. [0003] Indoor mirrors and window glass can also form a layer of water mist in wet weather and winter. [0004] One of the worries of people who wear glasses is that they are blinded by the steam. [0005] In the cold winter, the spectacle lenses will be fogged when entering the room from the outdoors, which will affect people's vision. A similar ...

Claims

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Application Information

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IPC IPC(8): C09K3/18C08J5/18
Inventor 王琪林承朴张金玲崔鹏
Owner HEFEI UNIV OF TECH
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