Method for preparing self-cleaning antifogging coating film

An anti-fog coating and self-cleaning technology, applied in the field of thin films, can solve problems such as pollution, and achieve the effects of reducing apparent contact angle, good photocatalytic activity, and good super-hydrophilic performance
CN102718410BInactive Publication Date: 2014-12-03佛山市南牧新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
佛山市南牧新材料有限公司
Publication Date
2014-12-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing self-cleaning antifogging coating film and belongs to the technical field of films. The method includes: subjecting a disperse system of tetrabutyl titanate to hydrothermal treatment to obtain TiO2 nano particle suspension; and dispersing SiO2 sol into the TiO2 suspension to obtain a TiO2 / SiO2 composite film by means of the dip-coating technique. The TiO2 particles are adhered and attached to the surface of a glass substrate by amorphous SiO2. Proper roughness factors are jointly provided by the TiO2 particles and continuous nano pore passages distributed in the film, and the apparent contact angle of water on the surface can be effectively decreased. The wettability of water on the surface of the film is further improved by a great quantity of OH groups carried by the amorphous SiO2, so that the super-hydrophilcity of the film can still be maintained after long-time outdoor placement.
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Description

technical field

[0001] The invention relates to a preparation method of a self-cleaning anti-fog coating film, which belongs to the technical field of films. Background technique

[0002] Due to the influence of human production activities and natural forces, the ambient atmosphere contains floating particles of various sizes. These dust particles are easy to adhere to the surface of objects in the air and cause pollution. Especially after the building window glass and automobile glass accumulate dust, it not only affects the appearance, but also reduces the light transmission performance of the glass. Especially after the surface of the automobile glass is polluted, the rainwater will form scattered water droplets on the surface of the rearview mirror and the window glass to fog the glass, which will affect the driver's observation of the driving conditions. Theoretically, the contact angle between water droplet and solid material surface depends on the interfacial tensio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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