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Preparation method of conductive nanocomposite material

A technology of conductive nano and composite materials, which is applied in the field of preparation of nanocomposite materials, can solve the problems of poor dispersion of nanoparticles and achieve the effects of strong structure retention, excellent mechanical properties, good continuity and uniformity

Active Publication Date: 2015-12-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problem of poor dispersion of nanoparticles of various conductive polymer nanocomposites, thereby providing a method for preparing conductive nanocomposites

Method used

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  • Preparation method of conductive nanocomposite material

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specific Embodiment approach 1

[0020] Specific implementation mode one: the preparation method of a kind of conductive nanocomposite material of this implementation mode is specifically carried out according to the following steps:

[0021] 1. Coating the polymer nanofiber dispersion to form a film, then blending and molding, and then preparing a polymer porous membrane material by etching or polymer electrospinning;

[0022] 2. Load the charged polymer onto the surface of the polymer porous membrane material prepared in step 1, control the loading amount of the charged polymer to reach a mass concentration of more than 0.15%, and then use solvent rinsing to remove the free charged polymer, blow Dry;

[0023] 3. Adsorb conductive nanoparticles to the surface of the charged polymer porous membrane material treated in step 2 by wetting, control the adsorption amount to reach a mass concentration of more than 20%, and then use solvent rinsing to remove free conductive nanoparticles Particles, blow dry; wherei...

specific Embodiment approach 2

[0026] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the preparation method of polymer nanofibers in the polymer nanofiber dispersion in step 1 is specifically carried out according to the following steps:

[0027] A. The polymer spinning stock solution with a mass concentration of 8% to 18% is used to prepare polymer primary fibers; the method for preparing polymer primary fibers is to pass the polymer spinning stock solution through a spinneret and enter a coagulation bath for solidification for 1 to 300 seconds;

[0028] B. Immerse the as-spun polymer fiber obtained in step A in the solvent in the reactor, control the temperature at 20-350° C., pressure at 1-100 atm, and ultrasonic treatment for 1-5000 h; the solvent is sulfuric acid, hydrochloric acid, methanol, ethanol, Pyridine, petroleum ether, tetrahydrofuran, carbon tetrachloride, dichloroethane, trichloroethane, dimethyl sulfoxide, triethylamine, aniline, water, phenol, ethylene glycol,...

specific Embodiment approach 3

[0030] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, the polymer nanofiber dispersion liquid is a mixed solution in which poly-p-phenylenebenzimidazole nanofibers are dispersed in ethanol / sodium hydroxide solution , wherein by mass parts poly-p-phenylenebenzimidazole nanofiber is 1 part, ethanol is 99 parts, and sodium hydroxide is 1 part. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a nanocomposite material, and concretely relates to a preparation method of a conductive nanocomposite material. A technical problem to be solved in the invention is poor dispersion of nanoparticles of various conductive polymer nanocomposite materials. The method comprises the following steps: 1, preparing a polymer porous membrane material; 2, loading a charged polymer; 3, adsorbing conductive nanoparticles to the surface of charged polymer loaded polymer porous membrane material obtained in step 2; 4, preparing a preliminary conductive membrane; and 5, post-processing. A polymer nanofiber membrane material is prepared, and the conductive nanoparticles are deposited on the surface of nanofibers in a layer and layer self-assembling mode with the membrane material as a skeleton, so perfect construction of a three dimensional conductive network is realized. The method is used to prepare high-performance conductive nanocomposite materials.

Description

technical field [0001] The invention relates to a preparation method of nanocomposite materials. Background technique [0002] High-performance conductive polymer nanocomposite membrane materials have great application value in the fields of national security, national economy, industrial production and daily life. Conductive polymers have antistatic properties and can be used for electromagnetic shielding. Conductive polymers have doping and dedoping properties, and can be used as rechargeable batteries and electrode materials; they are very sensitive to changes in electrical signals, so they can be used as sensors; they can absorb microwaves, so they can be used as coatings for stealth aircraft; Conductive polymers can change from insulators to semiconductors and then to conductors, which can make cruise missiles invisible during flight, and then insulate and detonate after approaching the target; combined with nanotechnology, conductive polymers can be made into molecula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/49D06M14/12C08J9/40C08J7/00C08J7/16C08J5/18C08L79/04D01F6/96D01F1/10D06M101/30
Inventor 黎俊谭磊黄玉东刘丽胡桢宋元军孟令辉
Owner HARBIN INST OF TECH
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