Thermal insulation film for transparent glass and preparation method

Abstract

The invention belongs to the technical field of glass window film and provides a thermal insulation film for transparent glass and a preparation method. According to the method, C=C double bonds are supported on the surface of nano indium tin oxide and mica powder through modification of gamma-(methacrylonitrile)propyl trimethoxy silane, C=C double bonds are introduced to a polyimide molecular chain through grafting of crylic acid-2-hydroxyethyl, and after mixing and coating, inorganic particles and polyimide produce chemical bond combination to achieve cross-linking and solidity by triggeringfree radical polymerization. Compared with a traditional method, the interfacial compatibility of an inorganic filler and a matrix in the prepared film is good, filler dispersion is uniform, and theobtained polyimide film has a good thermal insulation function and higher visible light transmittance and can be widely used as glass film.

Description

technical field [0001] The invention belongs to the technical field of glass window films, and provides a heat-insulation film for transparent glass and a preparation method thereof. Background technique [0002] With the vigorous promotion of the national energy-saving policy, my country has further intensified the energy-saving transformation of glass in buildings and automobiles. Among them, glass doors and windows are used as thin-walled enclosure structures in buildings, and glass windows are important components in automobiles, which play the kinetic energy of lighting and ventilation. However, just because of the particularity of the material glass, it has become the biggest energy weak link in the materials of today's society. Therefore, it is becoming an urgent task to adopt energy-saving measures for glass. It is of great significance to develop and apply glass film energy-saving technology. [0003] The application of glass film to improve the safety and energy ...

AI Technical Summary

Problems solved by technology

However, there are disadvantages such as uneven dispersion of inorganic fillers, poor light transmittance and poor heat insulation effect.

[0007] To sum up, in the currently commonly used glass film, the interface compatibility between the inorganic filler and the carrier matrix is ​​poor, and there are problems such as uneven dispersion of the filler and easy agglomeration, which leads to poor modification effect of the film's heat insulation and other functions, and the To a certain extent, it affects the light transmittance of glass and limits the development of glass film. Therefore, it is of great significance to develop a high-efficiency heat insulation film for glass.

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