Preparation method of glass fiber/carbon nanotube/epoxy resin multi-dimensional hybrid composite material

A carbon nanotube and glass fiber technology, applied in the field of nanomaterials, can solve the problems of high surface energy of carbon nanotubes, difficult to achieve uniform dispersion, easy to agglomerate, etc., to improve the lack of interlayer shear strength, and the preparation method is simple and easy. Line and interface bonding effect

Inactive Publication Date: 2011-12-14
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon nanotubes have high surface energy and are prone to agglomeration, making it difficult to achieve uniform dispersion in polymers

Method used

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  • Preparation method of glass fiber/carbon nanotube/epoxy resin multi-dimensional hybrid composite material
  • Preparation method of glass fiber/carbon nanotube/epoxy resin multi-dimensional hybrid composite material
  • Preparation method of glass fiber/carbon nanotube/epoxy resin multi-dimensional hybrid composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0032] Example 1: Multi-walled carbon nanotubes (OD<8nm) and glass fibers prepared by an arc discharge method are used as initial raw materials. After purification of the multi-walled carbon nanotubes, the glass fibers are treated with a silane coupling agent, and the carbon nanotubes are After acidification, acyl chlorination, amination, and pyromellitic dianhydride acid anhydride, the carbon nanotubes and liquid bisphenol A epoxy resin (E-51) are chemically cross-linked, and the surface bonded The multi-walled carbon nanotubes of liquid bisphenol A epoxy resin are combined with the glass fiber treated with silane coupling agent KH550 in a certain way to obtain a multi-dimensional hybrid composite material containing glass fiber / carbon nanotube / epoxy resin.

[0033] Step (1): In a 250mL single-neck round bottom flask equipped with a stirrer, add 1.1g of dried multi-walled carbon nanotube raw material and 100mL, 20% nitric acid solution, treat it under 120kHz ultrasonic wave fo...

Embodiment 2

[0042] Example 2: Single-walled carbon nanotubes (OD<8nm) prepared by chemical vapor deposition were used as the initial raw material, the single-walled carbon nanotubes were purified, the glass fibers were treated with a silane coupling agent, and the carbon nanotubes were acidified, Acyl chlorination, amination, and anhydride with benzophenone tetraacid dianhydride, chemical cross-linking reaction between carbon nanotubes and liquid bisphenol A epoxy resin (E-54), and liquid bisphenol on the surface can be obtained. Single-walled carbon nanotubes of type A epoxy resin (E-54), and then composite them with glass fibers treated with silane coupling agent KH560 in a certain way to obtain multidimensional hybrid composites containing glass fibers / carbon nanotubes / epoxy resin Material

[0043] Step (1): In a 500mL single-neck round bottom flask equipped with a stirrer, add 1.1g of dried single-walled carbon nanotube raw material and 100mL, 20% weight concentration of sulfuric acid...

Embodiment 3

[0051] Example 3: The single-walled carbon nanotubes (OD， - After the anhydride of diphenylmethane is anhydrided, the carbon nanotubes are chemically cross-linked with the liquid bisphenol A epoxy resin (E-44), and the surface is connected with the liquid bisphenol A epoxy resin (E-44). -44) single-walled carbon nanotubes, and then compound them with glass fibers treated with silane coupling agent KH570 in a certain way to obtain a multidimensional hybrid composite material containing glass fibers / carbon nanotubes / epoxy resin.

[0052] Step (1): in the 500mL single-necked round bottom flask that has been equipped with stirrer, add 10g through the dry single-walled carbon nanotube raw material and the sulfuric acid of 250mL, 20% weight concentration, process 80 hours under 120kHz ultrasonic wave, then Heat and stir at 180°C and reflux, react for 48 hours, filter with ψ0.8μm polytetrafluoroethylene microfiltration membrane, wash with deionized water 3-10 times until neutral, and ...

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Abstract

The invention relates to a preparation method of a glass fiber/carbon nanotube/epoxy resin multi-dimensional hybrid composite material. The preparation method provided by the invention comprises the following steps of: treating glass fiber with a silane coupling agent; carrying out surface carboxylation and chlorination on carbon nanotubes, then introducing diamine or polyamine to the carbon nanotubes, and modifying the carbon nanotubes connected with an amino group by a polybasic anhydride compound to prepare the carbon nanotubes carrying an anhydride group; dispersing the treated carbon nanotubes in an epoxy resin matrix by ultrasonic oscillation and high-speed stirring, and curing with an organic anhydride curing agent; and compounding the obtained carbon-nanotube-containing epoxy resin polymer used as a matrix with the coupling-agent-treated glass fiber to form a multi-dimensional hybrid composite material structure linked through covalent bonds. The preparation method provided by the invention has the advantages that: the composite material is convenient to prepare, the dispersion of the carbon nanotubes in epoxy resin is improved, and the strength and toughness of the carbon nanotubes are utilized to toughen epoxy resin and to improve the bonding strength with the base surface of the glass fiber, thereby enhancing the overall performance of the glass fiber/carbon nanotube/epoxy resin multi-dimensional hybrid composite material and broadening the applications of the glass fiber, carbon nanotubes and epoxy resin.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a method for preparing a glass fiber / carbon nanotube / 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 agen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/42C08K9/06C08K7/14C08K9/04C08K9/02C08K7/00C08K3/04
Inventor 邱军陈典兵
Owner TONGJI UNIV
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