Modified grapheme/thermosetting resin composite material and preparation method thereof

A resin composite material and graphene technology, which is applied in the field of modified graphene/thermosetting resin composite materials and their preparation, can solve the problems of decreased processing performance and high dielectric constant of composite materials, and achieves improved dielectric constant and high dielectric constant. Electric constant, effect of excellent electrical properties

Active Publication Date: 2015-03-11
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polyaniline covers the surface of carbon nanotubes, which improves the dielectric constant of the material and reduces dielectric loss, a high dielectric constant can only be obtained when

Method used

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  • Modified grapheme/thermosetting resin composite material and preparation method thereof
  • Modified grapheme/thermosetting resin composite material and preparation method thereof
  • Modified grapheme/thermosetting resin composite material and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0027] Example 1

[0028] 1. Preparation of carbon nanotubes modified with hydrochloric acid doped polyaniline

[0029] In N 2 Under protection, at 0~5℃, disperse 1g of multi-walled carbon nanotubes into 500mL of deionized water, add 0.99g of sodium lauryl sulfate, mix for 0.5h under stirring; then add 0.4g of aniline, and Add 100mL hydrochloric acid solution (0.043mol / L), mix thoroughly for 1h under stirring; slowly add 100mL ammonium persulfate solution (0.043mol / L) dropwise, after the dropwise addition, react for 6h, after the reaction is over, filter and wash , Dry to obtain polyaniline modified carbon nanotubes. The infrared spectrum, Raman spectrum, X-ray diffraction pattern, scanning electron microscope image, and conductivity at 1 Hz of the prepared hydrochloric acid doped polyaniline modified carbon nanotubes are shown in the attachment figure 1 , 2 , 3, 4, and 5.

[0030] 2. Preparation of graphite oxide

[0031] Take 2g graphite, 1g sodium nitrate and 46mL 98% concentrate...

Example Embodiment

[0040] Example 2

[0041] 1. Preparation of modified graphene

[0042] Weigh 1g of graphite oxide (provided in Example 1) and disperse it in 500mL of deionized water, stir and sonicate for 1h to obtain a graphene oxide dispersion, add 0.50g of hydrochloric acid doped polyaniline modified carbon nanotubes (provided in Example 1) Into the graphene oxide dispersion liquid, ultrasonically stirred, react at 60℃ for 12h, then add 10g L-ascorbic acid, raise the temperature of the reaction solution to 80℃, react for 24h, soak it in 500mL of 1mol / L ammonia water for 1h, After suction filtration, washing, and drying, a graphene-hydrochloric acid doped polyaniline modified carbon nanotube composite is obtained, wherein the mass of the hydrochloric acid doped polyaniline modified carbon nanotube is twice the mass of graphene. The X-ray diffraction pattern, scanning electron micrograph, and conductivity at 1 Hz of the prepared graphene-modified graphene are shown in the attached file. image 3...

Example Embodiment

[0045] Example 3

[0046] 1. Preparation of modified graphene

[0047] Weigh 1g of graphite oxide (provided in Example 1) and disperse it in 500mL of deionized water, stir and sonicate for 1h to obtain a graphene oxide dispersion, add 1.0g of hydrochloric acid doped polyaniline modified carbon nanotubes (Example 1) to In the graphene oxide dispersion liquid, the reaction was carried out at 60°C for 12h with ultrasonic stirring, and then 10g L-ascorbic acid was added. The temperature of the reaction solution was raised to 80°C and reacted for 24h. Then it was soaked in 500mL of 1mol / L ammonia water for 1h. After filtering, washing, and drying, modified graphene is obtained, wherein the mass of the hydrochloric acid-doped polyaniline modified carbon nanotube is twice the mass of the graphene. The X-ray diffraction pattern, scanning electron micrograph, and conductivity at 1 Hz of the prepared modified graphene are shown in the attachment image 3 , 4 And 5.

[0048] 2. Preparation of...

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Abstract

The invention discloses a modified grapheme/thermosetting resin composite material and a preparation method thereof. The preparation method comprises the following steps: adding a hydrochloric acid doped polyaniline modified carbon nano tube to oxidized grapheme aqueous dispersion, filtering, washing and drying the reactant to obtain the modified grapheme, uniformly mixing the modified grapheme with molten resin capable of thermosetting, and solidifying the mixture, so as to obtain the modified grapheme/thermosetting resin composite material. The modified grapheme provided has a micro capacitance structure; the hydrochloric acid doped polyaniline modified carbon nano tube is loaded on the surface of the grapheme through Pi to Pi conjugation; the excellent electrical property of the grapheme is maintained; the lamellas of the grapheme are prevented from mutually contacting; the obtained modified grapheme/thermosetting resin composite material has the advantages of high dielectric constant, low dielectric loss, and low percolation threshold, and can realize control on the dielectric property of the composite material by adjusting the variation of the content of the hydrochloric acid doped polyaniline modified carbon nano tube coated on the surface of the grapheme.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a modified graphene / thermosetting resin composite material and a preparation method thereof. Background technique [0002] High dielectric constant and low dielectric loss composite materials are important functional materials at present, and have great application value in electronics, aerospace, biomedicine and other fields. Graphene as a two-dimensional structure has huge electron mobility and large specific surface area, and is often used as a reinforcement for high-performance polymer-based composites. Graphene / polymer-based composite materials are an important type of high dielectric constant materials. In recent years, scholars at home and abroad have conducted a lot of research on graphene / polymer-based composite materials. Modification of graphene can effectively solve its agglomeration problem and improve the dielectric properties of comp...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L79/04C08L79/08C08K9/02C08K9/04C08K7/24C08K3/04
Inventor 顾嫒娟王童星梁国正袁莉
Owner SUZHOU UNIV
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