Nanometric tin-containing metal oxide particle and dispersion, and preparation method and application thereof

Abstract

There is disclosed a tin-containing metal oxide nanoparticle, which has an index of dispersion degree less than 7 and a narrow particle size distribution which is defined as steepness ratio less than 3. There is disclosed dispersion, paint, shielding film and their glass products which comprise the said nanoparticles. Besides, there are also disclosed processes of making the tin-containing metal oxide nanoparticle and their dispersion. The tin-containing metal oxide nanoparticles and their dispersion disclosed herein may be applied on the window glass of houses, buildings, vehicles, ships, etc. There is provided an excellent function of infrared blocking with highly transparent, and to achieve sunlight controlling and thermal radiation controlling.

Description

TECHNICAL FIELD[0001]The present invention relates to a high transparency, low radiation, energy-saving composite material for glass, and more particularly, to tin-containing metal oxide nano-particles and their dispersion, the preparation methods of the nano-particles and dispersion, sunlight-control composition material comprising the tin-containing metal oxide particles or their dispersion, and the high transparency, low radiation and energy-efficient glass.BACKGROUND[0002]With the rapid development of science and technology and industrial production, energy resource and the environment increasingly attract whole social attention with higher demands for energy saving and environmental protection. Regarding to energy consumption, energy consumption from buildings accounts for nearly 40% of the total social energy consumption, of which the energy loss through the glass doors and windows in the building energy consumption reaches more than 50%, that is, the glass doors and windows h...

AI Technical Summary

Benefits of technology

The present invention provides a method for producing stable tin-containing metal oxide nano-particles that have high transparency and can block IR (infrared) and UV (ultraviolet) light. These nano-particles can be dispersed in solvents to create transparent materials that can be used to control sunlight. The invention also provides a method for creating stable and cost-effective dispersions of these nano-particles. The final technical effect is that the invention provides a way to create materials that can block IR and UV light while still being transparent.

Problems solved by technology

The main energy consumption within the building is due to heating and air conditioning.

UV does not account for a large proportion in energy, but greatly harmful to the surface paint of furniture and human bodies, which is one of the reasons that anti-UV glass has been increasingly widely used.

Equipment prices by using above methods are expensive with restrictions on the substrate and the substrate shape, size.

Furthermore, the methods are difficult to apply to existing glasses, therefore meeting a very limited commercial promotion.

At present, coated glasses are mainly used in automotive, which market is basically monopolized by very expensive films from companies of the United States 3M, V-BEST, JOINNS, JOHNSON, and difficult to be extended to architectural glass.

This simple powder reprocessing approach may cause serious aggregation, especially due to the high surface energy of nano-particles.

Moreover, the uneven intensity of ball milling or sanding milling may lead to non-uniform secondary particle size of the dispersed particles; in addition, ball milling and sanding milling inevitably introduce impurities.

Dispersion and the modification belonging to physical modification methods, affecting the stability of functional dispersion, which is difficult to maintain the particles in the dispersion in nanoscale and keep stable for long time.

These will affect the application of the functional dispersion, ultimately affect the transparency and other properties of the glass coating or film.

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