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Preparation method of carbon fiber/nano-diamond/epoxy resin multi-dimensional hybrid composite

A nano-diamond and epoxy resin technology, which is applied in the field of nano-materials, can solve the problems of difficulty in uniform dispersion, easy agglomeration, and high surface energy of nano-diamonds, and achieves increased interface strength, a simple and easy preparation method, and good interlayer shearing. the effect of strength

Inactive Publication Date: 2016-11-23
NANJING ZHONGYING NEW NANOMATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used as a composite material, due to the high surface energy of nano-diamonds, it is easy to agglomerate, making it difficult to disperse uniformly in polymers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: The nano-diamond and carbon fiber with an average particle diameter of 10 nanometers prepared by the detonation method are used as initial raw materials. After the anhydride of tetraformic acid dianhydride, the nano-diamond and liquid bisphenol A type epoxy resin (E-51) are carried out chemical cross-linking reaction, then obtain the nano-diamond that the surface is connected with liquid bisphenol A type epoxy resin, and then It is compounded with pyromellitic dianhydride anhydrided carbon fiber in a certain way to obtain a multi-dimensional hybrid composite material containing carbon fiber / nano diamond / epoxy resin.

[0030] Step (1): In a 250mL single-neck round bottom flask equipped with a stirrer, add 1.1g of dried nano-diamond raw material and 100mL, 20% nitric acid solution, treat it under 120kHz ultrasonic waves for 10 hours, and then heat to 20°C , reacted for 48 hours, filtered with ψ0.8 μm polyvinylidene fluoride microfiltration membrane, washed 3-10...

Embodiment 2

[0039] Embodiment 2: The average particle diameter prepared by the detonation method is 30 nanometers of nano-diamonds as the initial raw material, the nano-diamonds are purified, and the nano-diamonds and carbon fibers are acidified, acyl chlorinated, aminated, and then benzophenone tetraacid di After anhydride anhydride, the nano-diamond and liquid bisphenol-A epoxy resin (E-54) are chemically cross-linked to obtain nano-diamonds with liquid bisphenol-A epoxy resin (E-54) on the surface. Then compound it with carbon fiber anhydrided with benzophenone tetraacid dianhydride in a certain way to obtain a multidimensional hybrid composite material containing carbon fiber / nanodiamond / epoxy resin

[0040] Step (1): In the 500mL single-necked round bottom flask that agitator has been housed, add 1.1g through the dry nano-diamond raw material and the sulfuric acid of 100mL, 20% weight concentration, process 12 hours under 120kHz ultrasonic waves, then heat to React at 180°C for 48 ho...

Embodiment 3

[0049] Example 3: The nano-diamond with an average particle diameter of 50 nanometers prepared by the detonation method is used as the initial raw material. After the nano-diamond is purified, the carbon fiber and the nano-diamond are respectively acidified, acyl chlorinated, and aminated, and then N, N' - after diphenylmethane acid anhydride of dianhydride, carry out chemical cross-linking reaction with nano-diamond and liquid bisphenol A type epoxy resin (E-44), then obtain the surface that is connected with liquid bisphenol A type epoxy resin (E-44) 44) nano-diamond, and then composite it with N, N'-diphenylmethane-anhydrided carbon fiber in a certain way to obtain a multi-dimensional hybrid composite material containing carbon fiber / nano-diamond / epoxy resin.

[0050] Step (1): in the 500mL single-necked round bottom flask that stirrer has been housed, add 10g through the dry nano-diamond raw material and the sulfuric acid of 250mL, 20% weight concentration, process 80 hours...

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Abstract

The invention belongs to the technical field of nano-materials, and particularly relates to a preparation method of a carbon fiber / nano-diamond / epoxy resin multi-dimensional hybrid composite. After nano-diamond and carbon fibers are subjected to surface carboxylation and acylating chlorination, diamine or polyamine is introduced to the nano-diamond and the carbon fibers, the nano-diamond linked with amino groups is modified with micromolecular aromatic multi-anhydride compounds, and the nano-diamond with anhydride groups is prepared. The nano-diamond is dispersed in an epoxy resin matrix through ultrasonic oscillation and high-speed stirring and is cured by an organic anhydride curing agent, so that an epoxy resin polymer containing the nano-diamond is obtained and serves as a matrix to be composited with the carbon fibers, and a multi-dimensional hybrid composite structure realizing linkage through covalent bonds is formed. The carbon fiber / nano-diamond / epoxy resin multi-dimensional hybrid composite is convenient to prepare; the nano-diamond is endowed with activity for participation in a reaction, and the anhydride groups on the nano-diamond are subjected to chemical crosslinking with epoxy groups in epoxy resin, so that dispersity of the nano-diamond in the epoxy resin is improved; the epoxy resin is strengthened and toughened by means of strength and toughness of the nano-diamond, the bonding strength of the epoxy resin and the base surfaces of the carbon fibers is improved, accordingly, overall performance of the carbon fiber / nano-diamond / epoxy resin multi-dimensional hybrid composite is improved, and the applications of the carbon fibers, the nano-diamond and the epoxy resin are broadened.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a carbon fiber / nanometer diamond / epoxy resin multidimensional hybrid composite material. Background technique [0002] Epoxy resin is a thermosetting oligomer with poor properties. In addition to being used as a stabilizer for polyvinyl chloride, it has no direct use value. But when it reacts with the curing agent to form a three-dimensional cross-linked network structure, it presents a series of excellent properties. Therefore, the chemical reaction between curing agent and epoxy resin is the basis and core of epoxy resin application. The behavior of the epoxy resin during the curing process and the performance of the cured product depend to a large extent on the performance of the curing agent and the interaction and reasonable coordination between it and the resin, which in turn depends on the molecular structure of the curing ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/02C08K9/04C08K3/04C08K7/06C08K7/00
Inventor 苏党生
Owner NANJING ZHONGYING NEW NANOMATERIALS
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