Highly-branched-chain polyaniline modified carbon nanotube/thermosetting resin composite material and preparation method thereof

A multi-branched polyaniline and resin composite material technology, which is applied in the field of conductor/polymer composite materials and its preparation, can solve the problem that the excellent performance of carbon nanotubes cannot be fully utilized, the amount of amino-containing pyrene derivatives is high, and it is difficult to adopt Preparation methods and other issues, to achieve high performance, simple and easy method, and improve the effect of dielectric constant

Inactive Publication Date: 2013-01-16
SUZHOU UNIV +1
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of amino-containing pyrene derivatives coated with carbon nanotubes in this method is relatively high, which exceeds the amount of carbon nanotubes, and the excellent performance of carbon nanotubes cannot be fully utilized.
[0004] It can be seen from the above prior art that the current carbon nanotube / polymer composite material preparation technology can basically only improve some or some deficiencies, and it is difficult to adopt a simple and easy preparation method, only using a small amount of dispersant, maintaining On the basis of good dispersion of carbon nanotubes, while improving the dielectric constant of the composite material and reducing the dielectric loss

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Highly-branched-chain polyaniline modified carbon nanotube/thermosetting resin composite material and preparation method thereof
  • Highly-branched-chain polyaniline modified carbon nanotube/thermosetting resin composite material and preparation method thereof
  • Highly-branched-chain polyaniline modified carbon nanotube/thermosetting resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of multi-branched polyaniline

[0035] 0.9g aniline, 1.1g o-toluidine and 1.7g m-aminobenzenesulfonic acid were mixed respectively, and 150mL hydrochloric acid solution (0.2mol / L) was added in the mixture; 2 Under protection and at 0-5°C, mechanically stir for 30 minutes. Subsequently, 100 mL of ammonium persulfate (0.3 mol / L) solution was added dropwise and vigorously stirred. After the dropwise addition, keep warm for 5 hours until the reaction is complete, wash with dilute hydrochloric acid solution, acetone, deionized water, filter with suction, and vacuum dry at 50°C for 24 hours to obtain polyaniline with an intrinsic viscosity of 0.43dL / g. Its infrared spectrum, ultraviolet-visible spectrum, 1 H nuclear magnetic resonance spectrum, scanning electron microscope, X-ray diffraction spectrum, conductivity curve and thermogravimetric curve are respectively as attached figure 1 , 2 , 3, 4, 5, 6 and 7.

[0036] Add 1 g of polyaniline to 90 mL of dime...

Embodiment 2

[0056] 1. Preparation of multi-branched polyaniline

[0057] According to the technical scheme of Example 1, polyaniline with multiple branches was prepared.

[0058] 2. Preparation of multi-branched polyaniline modified carbon nanotubes

[0059] Add 1 g of carbon nanotubes and 0.033 g of polybranched polyaniline into 50 mL of dimethyl sulfoxide, stir at 25 °C and sonicate for 20 min, add 100 mL of methanol to precipitate, filter and wash, and dry in vacuum at 50 °C for 24 Hours, the multi-branched polyaniline-modified carbon nanotubes were obtained. Its X-ray diffraction spectrum and Raman spectrum are as follows Figure 9 , 10 shown.

[0060] 3. Preparation of multi-branched polyaniline modified carbon nanotubes / epoxy resin composites

[0061] Add 0.517g polyaniline-modified carbon nanotubes and 100g epoxy resin (brand E-51) into the flask, stir at 60°C and ultrasonically for 1 hour, vacuum degassing for 30min, add 4g 2- Ethyl-4-methylimidazole, continue to stir for 10...

Embodiment 3

[0063] 1. Preparation of multi-branched polyaniline

[0064] According to the technical scheme of Example 1, polyaniline with multiple branches was prepared.

[0065] 2. Preparation of multi-branched polyaniline modified carbon nanotubes

[0066] Add 1g of carbon nanotubes and 0.05g of polybranched polyaniline into 50mL of dimethyl sulfoxide, stir at 25°C and sonicate for 20min, add 100mL of methanol to precipitate, filter and wash, and dry in vacuum at 50°C After 24 hours, highly branched polyaniline-modified carbon nanotubes were obtained. Its X-ray diffraction spectrum and Raman spectrum are as follows Figure 9 , 10 shown.

[0067] 3. Preparation of multi-branched polyaniline modified carbon nanotubes / epoxy resin composites

[0068]Add 0.525g polyaniline-modified carbon nanotubes and 100g epoxy resin (grade E-51) into the flask, stir at 60°C and ultrasonically for 1 hour, vacuum degassing for 30min, add 4g 2- Ethyl-4-methylimidazole, continue to stir for 10 minutes t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
dielectric lossaaaaaaaaaa
Login to view more

Abstract

The invention discloses a highly-branched-chain polyaniline modified carbon nanotube/thermosetting resin composite material and a preparation method thereof. The preparation method comprises the following steps of: dissolving polyaniline in dimethyl sulfoxide, and dropwise adding trialkoxysilane containing epoxide group and hydrochloric acid in dimethyl sulfoxide to obtain organosilicone modified polyaniline; dissolving obtained organosilicone modified polyaniline in dimethyl sulfoxide, and then adding deionized water and hydrochloric acid into dimethyl sulfoxide to obtain highly-branched-chain polyaniline; adding highly-branched-chain polyaniline and carbon nanotubes into the carbon nanotube, and performing suction filter and washing on highly-branched-chain polyaniline and the carbon nanotubes which are settled in methyl alcohol, thus obtaining highly-branched-chain polyaniline modified carbon nanotubes which are mixed with thermocuring resin at a molten state; and curing the carbon nanotubes and the resin to obtain the highly-branched-chain polyaniline modified carbon nanotube/thermosetting resin composite material which has the characteristics of high dielectric constant and low dielectric loss. A conducting layer of the highly-branched-chain polyaniline wraps the surfaces of the carbon nanotubes, and the decentralized control on the carbon nanotubes and the control on dielectric properties of the composite material can be realized by adjusting the content of the surface wrapping layer. The preparation method is easy to implement and suitable for large-scale application.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a conductor / polymer composite material and a preparation method thereof. Background technique [0002] Composite materials with high dielectric constant and low dielectric loss are important functional materials at present. They have good functions of storing electric energy and uniform electric field, and play an important role in many cutting-edge industrial fields. Carbon nanotube / polymer composites are an important form of preparing high dielectric constant materials. In recent decades, domestic and foreign scholars have carried out a lot of research on carbon nanotube / polymer composites. The results show that the dispersion of carbon nanotubes is the key factor affecting the composite. The key factor for the further improvement of the dielectric constant of the material, forming a coating layer outside the carbon nanotubes can effectively improve its d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L79/04C08L79/02C08K9/04C08K7/00C08K3/04C08G73/02
Inventor 梁国正强志翔顾嫒娟张志勇袁莉
Owner SUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap