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Method for preparing titanium dioxide functional film from poly ethylene glycol terephthalate substrate surface

A polyethylene terephthalate and substrate surface technology, which is applied in the field of transparent titanium dioxide functional films, can solve the problems of high cost, low degree of film crystallinity, and the substrate needs to be conductive, and achieves strong photoactive properties. Effect

Inactive Publication Date: 2006-05-24
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

Therefore, in the film preparation method provided by this type of patent, the substrate material can only be glass, ceramics and other high-temperature-resistant inorganic materials, which limits the TiO 2 Application of film on heat-labile substrates such as plastic
Although Chinese patent CN 1467305 provides a kind of utilization magnetron sputtering method at room temperature TiO 2 A thin film preparation method, but this method has special requirements such as complicated equipment, high cost, and the substrate needs to be conductive, so there is a certain difficulty in production, and the TiO prepared by this method 2 The degree of crystallinity of the thin film is not high, so it is not suitable for use as a photocatalytic material

Method used

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  • Method for preparing titanium dioxide functional film from poly ethylene glycol terephthalate substrate surface
  • Method for preparing titanium dioxide functional film from poly ethylene glycol terephthalate substrate surface
  • Method for preparing titanium dioxide functional film from poly ethylene glycol terephthalate substrate surface

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preparation example Construction

[0032] Transparent TiO on PET substrate surface 2 Film preparation

[0033] Use deionized water to ultrasonically clean the PET substrate, and then wash it with ethanol and acetone in turn. After the cleaning is completed and the surface is dry, put the PET in an acetone solution with a volume concentration of 1% silane coupling agent for surface treatment. 5- Take it out after 30 minutes and dry it under the air atmosphere of 100-150℃ for 5-60 minutes, after cooling, insert it vertically into TiO with anatase crystal form 2 In the sol-film solution, a wet film is formed on the surface of the PET substrate by the pulling method, and the pulling speed is 2.5 mm / s. Finally, the wet film is dried at 120 ° C, and the surface is coated with transparent TiO. 2 Film PET material. The blank PET substrate, the surface-treated PET material and the surface coated with TiO were tested by UV absorption spectrometer 2 The visible light transmittance of the PET material of the film. see ...

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Abstract

The invention discloses a method to make nm titanium dioxide light catalyzing film on PET base material the feature includes aging titanium peroxide acid sol to make aqueous phase nm titanium dioxide sol, adding film forming agent to gain film coating liquid, finally, making titanium dioxide film on the pre-treated PET base material. It could be used for aseptic package, antibiotic fabric, antifogging dripping and self-cleaning film. It is low cost, easy to operate and is suited for manufacturing.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a method for preparing a transparent titanium dioxide functional film with photocatalytic activity on the surface of a polyethylene terephthalate (PET) substrate. Background technique [0002] Polyethylene terephthalate (PET) is a material with a very wide range of applications due to its good mechanical properties, electrical insulation, chemical resistance, fatigue resistance and friction resistance. No longer limited to fibers, but further expanded to various containers, packaging materials, films, films, engineering plastics and other fields. At present, PET is increasingly replacing aluminum, glass, ceramics, paper, wood, steel and other synthetic material. [0003] With the development of science and technology and the improvement of living standards, people are paying more and more attention to the functional properties of the material itself. PET is a material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00C08K3/22C08L67/03
Inventor 张金龙鲍兴旺周立君燕姗姗陈锋田宝柱
Owner EAST CHINA UNIV OF SCI & TECH
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