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Polyaniline/thermoplastic polymer conductive nanofiber airgel and preparation method thereof

A technology of thermoplastic polymers and conductive nanometers, which is applied in the direction of plant fibers, fiber treatment, fiber types, etc., can solve the problems of impenetrability, high cost of graphene, and low binding force between polyaniline and cellulose, and meet the requirements of electrical conductivity Requirements, the effect of precise structural design

Active Publication Date: 2021-10-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Patent CN110577669A discloses a conductive polyaniline-cellulose composite airgel and its preparation method. In this method, conductive polyaniline is directly added to the freeze-drying process of cellulose aerogel to obtain light, porous Conductive airgel, but the bonding force between polyaniline and cellulose is small, polyaniline is easy to fall off, and the conductivity is unstable
In order to solve the problem that polyaniline is easy to fall off, the prior art uses hydrothermal and in-situ polymerization techniques to synthesize covalently bonded polyaniline / graphene airgel. This method grows polyaniline nanorods vertically and uniformly on the surface of graphene. (200-300nm), mainly used for microwave absorption, the disadvantage is that the cost of graphene is high, and the length of the grown polyaniline nanorods is fixed and short, which cannot penetrate the pores of the nanofiber airgel, so that the entire nanofiber airgel Polyaniline nanorods on the gel are linked to further enhance conductivity

Method used

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  • Polyaniline/thermoplastic polymer conductive nanofiber airgel and preparation method thereof
  • Polyaniline/thermoplastic polymer conductive nanofiber airgel and preparation method thereof
  • Polyaniline/thermoplastic polymer conductive nanofiber airgel and preparation method thereof

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Embodiment 1

[0038] A preparation method of polyaniline / thermoplastic polymer conductive nanofiber airgel, the steps are as follows:

[0039] (1) Thermoplastic polymer nanofiber airgel (such as figure 1 Shown) soak in acidic solution I for 5 minutes, accompanied by ultrasonic treatment during the soaking, the frequency of ultrasonic treatment is 35 Hz, followed by soaking in aniline for 5 minutes, standing still during soaking, soaking in ethanol again for 1 second, taking out quickly after soaking, and obtaining Thermoplastic polymer nanofiber airgel with uniform adsorption of aniline on the surface and inside; the thermoplastic polymer is PBT;

[0040] Thermoplastic polymer nanofiber airgel is prepared by making nanofibers prepared by the sea-island spinning method into a suspension and then freeze-drying. The preparation process is as follows: firstly, the thermoplastic polymer and CAB (cellulose acetate butyrate) Mix uniformly according to the mass ratio of 2:8, use a twin-screw extru...

Embodiment 2

[0050] A preparation method of polyaniline / thermoplastic polymer conductive nanofiber airgel, the steps are as follows:

[0051] (1) Immerse the thermoplastic polymer nanofiber airgel in the acidic solution I for 8 minutes, accompanied by ultrasonic treatment during the infiltration, the frequency of the ultrasonic treatment is 35 Hz, followed by immersion in aniline for 6 minutes, standing when infiltrating, and infiltrating in ethanol again In 1.2s, take it out quickly after infiltration, and obtain a thermoplastic polymer nanofiber airgel with uniform adsorption of aniline on the surface and inside; the thermoplastic polymer is PBT;

[0052] Thermoplastic polymer nanofiber airgel is prepared by making nanofibers prepared by the sea-island spinning method into a suspension and then freeze-drying. The preparation process is as follows: first, the thermoplastic polymer and CAB are mixed in a mass ratio of 2:8 Mix evenly, and use a twin-screw extruder to melt and blend and extr...

Embodiment 3

[0058] A preparation method of polyaniline / thermoplastic polymer conductive nanofiber airgel, the steps are as follows:

[0059] (1) soak the thermoplastic polymer nanofiber airgel in the acidic solution I for 6 minutes, accompanied by ultrasonic treatment during the soaking, the frequency of the ultrasonic treatment is 35 Hz, then soak in aniline for 8 minutes, stand still during soaking, and soak in ethanol again In 1.5s, take it out quickly after infiltration, and obtain a thermoplastic polymer nanofiber airgel with aniline uniformly adsorbed on the surface and inside; the thermoplastic polymer is EVOH;

[0060] Thermoplastic polymer nanofiber airgel is prepared by making nanofibers prepared by the sea-island spinning method into a suspension and then freeze-drying. The preparation process is as follows: first, the thermoplastic polymer and CAB are mixed in a mass ratio of 2:8 Mix evenly, and use a twin-screw extruder to melt and blend and extrude. The temperature of the tw...

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Abstract

The invention relates to a polyaniline / thermoplastic polymer conductive nanofiber airgel and a preparation method thereof. The preparation method is: a mixture of the thermoplastic polymer nanofiber airgel which uniformly adsorbs aniline to the surface and inside, acid solution II and aniline (The volume ratio of acidic solution II and aniline is 48:0.1~0.2) After adding the oxidant solution to obtain the reaction system, apply a certain voltage (1~4kV) electric field to the reaction system for a certain period of time to prepare polyaniline / thermoplastic polymer Conductive nanofiber aerogels. The final polyaniline / thermoplastic polymer conductive nanofiber airgel is composed of thermoplastic polymer nanofiber airgel and polyaniline nanofibers (average length 0.4-1.2 μm); polyaniline nanofibers are mainly rooted in thermoplastic polymer The surface of the nanofibers grows along the direction perpendicular to the thermoplastic polymer nanofibers, and the structure is orderly. The method of the invention is simple, and the electrical conductivity of the prepared product is 21.2-47.5mS / cm.

Description

technical field [0001] The invention belongs to the technical field of conductive nanofiber airgel, and relates to a polyaniline / thermoplastic polymer conductive nanofiber aerogel and a preparation method thereof. Background technique [0002] Polyaniline has excellent properties such as high conductivity, good stability, fast response speed, and low working voltage. It is one of the most promising conductive polymer materials and has been applied in many new fields, such as exchange electrodes, secondary Batteries, gas sensitive materials, electrochromic displays, electronic equipment, sensors, electromagnetic shielding, antistatic and metal anticorrosion and other fields. [0003] In recent years, nanomaterial preparation technology has been widely used in the preparation and synthesis of conductive polymers. Due to the size effect and surface effect of nanomaterials, the functional properties of conductive polymer materials have been greatly expanded. There are many for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/61C08G73/02D06M101/08D06M101/34D06M101/32D06M101/20
CPCC08G73/0266D06M15/61D06M2101/08D06M2101/20D06M2101/32D06M2101/34
Inventor 宋炜肖茹陆建伟晏珊陈爽王星帅李梦娇
Owner DONGHUA UNIV
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