High molecular nano composite film and preparing method thereof

A nano-composite and polymer technology, applied in the field of polymer nano-composite film and its preparation, can solve the problems of small particle size and large surface atomic ratio, easy agglomeration, unstable energy, etc., and achieves stable film-making performance, The effect of low cost and short production cycle

Active Publication Date: 2015-12-02
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • High molecular nano composite film and preparing method thereof
  • High molecular nano composite film and preparing method thereof
  • High molecular nano composite film and preparing method thereof

Examples

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Effect test

Embodiment 1

[0043]A kind of macromolecule nanocomposite film of the present invention, comprises polymethyl methacrylate matrix (being PMMA matrix) and the nanometer Cu and [emim] BF dispersed in PMMA matrix 4 (The molecular formula is shown in formula I), that is, the polymer nanocomposite film is specifically Cu / [emim]BF 4 / PMMA film.

[0044]

[0045] A kind of preparation method of the above-mentioned polymer nanocomposite film of the present embodiment, flow process see figure 1 , including the following steps:

[0046] (1) Weigh 1mg of nano-copper powder with an electronic balance. The average particle size of the nano-copper powder is 10nm~30nm, and add it to 10mL[emim]BF 4 In the ionic liquid, under the conditions of air isolation and argon protection, ultrasonically disperse for 2 hours to make it evenly mixed to obtain the first dispersion liquid, namely [emim]BF 4 -Cu sol.

[0047] (2) Weigh 0.06975g of PMMA with an electronic balance and add it into 1ml of dichlorometha...

Embodiment 2

[0057] A polymer nanocomposite film of the present invention, comprising polystyrene matrix (i.e. PS matrix) and nano Cu and [emim] BF dispersed in PS matrix 4 (The molecular formula is shown in formula I), that is, the polymer nanocomposite film is specifically Cu / [emim]BF 4 / PS film.

[0058]

[0059] A preparation method of the polymer nanocomposite film of the above-mentioned present embodiment, comprising the following steps:

[0060] (1) Weigh 1mg of nano-copper powder with an electronic balance. The average particle size of the nano-copper powder is 10nm~30nm, and add it to 10mL[emim]BF 4 In the ionic liquid, under the conditions of air isolation and argon protection, ultrasonically disperse for 2 hours to make it evenly mixed to obtain the first dispersion liquid, namely [emim]BF 4 -Cu sol.

[0061] (2) 0.06975 g of PS was weighed with an electronic balance and added to 1 mL of dichloromethane solvent, ultrasonically dispersed for 2 hours, and mixed uniformly to ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L33/12C08L23/06C08L79/02C08L49/00C08L79/04C08L65/00C08K3/08C08J5/18
Inventor 王清华曾良李效东楚增勇李义和胡天娇
Owner NAT UNIV OF DEFENSE TECH
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