High molecular nano composite film and preparing method thereof

Abstract

The invention discloses a high molecular nano composite thin film and a preparing method thereof. The high molecular nano composite thin film comprises a high molecular substrate and a nano metal material and ionic liquid which are dispersed in the high molecular substrate. The preparing method comprises the steps: (1) supersonically dispersing the nano metal material in the ionic liquid to obtain first dispersion liquid; (2) supersonically dispersing the high molecular material in an organic solvent to obtain second dispersion liquid; (3) mixing the first dispersion liquid with the second dispersion liquid; (4) spinning-coating the mixed solution onto a substrate to obtain the high molecular nano composite thin film. In the high molecular nano composite thin film, nano particles are uniformly dispersed, no second agglomeration phenomenon exists, and the preparing method is simple, short in production period and low in cost.

Description

technical field [0001] The invention belongs to the technical field of polymer film preparation and nano chemistry, and in particular relates to a polymer nanocomposite film and a preparation method thereof. Background technique [0002] Nanomaterials are a research hotspot in recent years. It has some special effects, such as surface effect, small size effect, quantum size effect, macroscopic quantum tunneling effect, etc. Performance, electrical properties, and chemical and catalytic properties, etc., have unparalleled characteristics of other materials. [0003] Nanocomposite materials use resin, rubber, ceramic or metal as the continuous phase, and nano-sized metals, semiconductors, rigid particles or other inorganic particles, fibers, carbon nanotubes and other modifiers as the dispersed phase. Methods The modifying agent is uniformly dispersed in the matrix material to form a composite system containing nano-sized materials in one phase. [0004] Ionic liquids are wi...

AI Technical Summary

Problems solved by technology

However, due to the small particle size of nanoparticles, large proportion of surface atoms, large specific surface area, large surface energy, and energy instability, they are easy to agglomerate together, and it is difficult to uniformly disperse in the polymer matrix in the form of nanoparticles.

At present, in the field of preparation and application of polymer nanocomposite films, a technical difficulty exists to prevent the agglomeration of nanoparticles during the preparation and dispersion process, which is also a hot problem to be solved urgently in the field of nanotechnology research.

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