Epoxy resin/carbon nanotube high-strength lightweight composite material, and preparation method thereof

A composite material and carbon nanotube technology, which is applied in the field of epoxy resin/carbon nanotube high-strength and light-weight composite material and its preparation, can solve problems such as expensiveness and complexity, and achieve the effects of reducing density, improving mechanical strength and simple process

Inactive Publication Date: 2011-11-23
HEBEI BEISU PIPE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although these methods can improve the dispersion of carbon nanotubes in epoxy resin to varying degrees, most of them need to be realized by complex and expensive equipment or through very complicated processes. Therefore, it is necessary to develop a practical carbon nanotube dispersion method. Technology will have high practical value

Method used

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  • Epoxy resin/carbon nanotube high-strength lightweight composite material, and preparation method thereof
  • Epoxy resin/carbon nanotube high-strength lightweight composite material, and preparation method thereof
  • Epoxy resin/carbon nanotube high-strength lightweight composite material, and preparation method thereof

Examples

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Effect test

example 1

[0018] Example 1: 0.75g γ-aminopropyl triethoxysilane coupling agent is fully dispersed in the mixed solution of 150g ethanol / distilled water (volume ratio 9: 1), then 40g average particle diameter is 35 μ m, true density is 0.57g / cm 3 The hollow glass microspheres soaked in it for 24 hours and then filtered, and then dried in a blast drying oven at 120°C for 2 to 4 hours, and amino groups were introduced on the surface; at the same time, 1g of The carboxylated multi-walled carbon nanotubes (Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, model TNMC5) were ultrasonically dispersed in 300g of DMF, the ultrasonic time was 10h, and the power was 200W; then the aminated hollow glass microspheres were added to the DMF In the system, react at 145°C for 12h to complete the grafting reaction, wherein the stirring rate is 200~500r / min; the above product is filtered and washed 3 times with ethanol, dried and added to a total weight of 130g epoxy resin (U.S. Dow Chemica...

example 2

[0019] Example 2: Fully disperse 1.5g of γ-aminopropyltrimethoxysilane coupling agent in a mixed solution of 150g of ethanol / distilled water (volume ratio 9:1), then 10g of g / cm 3 The hollow glass microspheres were soaked in it for 24 hours and then filtered, and then dried in a blast drying oven at 120°C for 2 to 4 hours, and amino groups were introduced on the surface; at the same time, 3g of The carboxylated double-walled carbon nanotubes (Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, model TNSDC) were ultrasonically dispersed in 300g of DMF, the ultrasonic time was 5h, and the power was 200W; then the aminated hollow glass microspheres were added to the DMF In the system, react at 120°C for 12 hours to complete the grafting reaction, and the stirring rate is 200-500r / min; filter the above product and wash it with ethanol for 3 times, dry it and add it to a mixture of epoxy resin and curing agent with a total weight of 130g In the system, mechanically s...

example 3

[0020] Example 3: Fully disperse 1g of γ-aminopropyltriethoxysilane coupling agent in a mixed solution of 150g of ethanol / distilled water (volume ratio 9:1), and then 50g of g / cm 3 The hollow glass microspheres were soaked in it for 24 hours and then filtered, and then dried in a blast drying oven at 120°C for 2 to 4 hours to introduce amino groups on the surface; at the same time, 5 g of The carboxylated multi-walled carbon nanotubes were ultrasonically dispersed in 300g of DMF, the ultrasonic time was 10h, and the power was 200W; then the aminated hollow glass microspheres were added to the DMF system and reacted at 145°C for 12h to complete the grafting reaction, wherein the stirring rate is 200 ~ 500r / min; the above product is filtered and washed with ethanol for 3 times, dried and added to the mixed system of epoxy resin and curing agent with a total weight of 130g, mechanically stirred at 1000r / min for 5min and then placed in Vacuum at 50°C to remove air bubbles, and th...

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Abstract

The invention relates to an epoxy resin/carbon nanotube high-strength lightweight composite material, and a preparation method thereof. The material comprises components of, by mass: 100 parts of epoxy resin, 30 parts of a curing agent, 10 to 60 parts of hollow glass microballoons, 1.0 to 6.0 parts of carboxylated carbon nanotubes, and 0.75 to 1.5 parts of an aminosilane coupling agent. The carboxylated carbon nanotubes are grafted on the surfaces of the hollow glass microballoons through chemical methods, and the materials are composed into epoxy resin. With good dispersibility of the hollowglass microballoons in epoxy resin, a dispersion problem of carbon nanotubes in epoxy resin is effectively solved, and mechanical intensity and conductivity of the composite material are improved. With the lightweight of the hollow glass microballoons, the density of the composite material is substantially reduced. The high-strength lightweight composite material produced with the method can be applied in the advanced material fields of aerospace, deep sea buoyancy materials, and wind power blades.

Description

technical field [0001] The invention relates to an epoxy resin / carbon nanotube high-strength and lightweight composite material and a preparation method thereof. Background technique [0002] Since the advent of carbon nanotubes, they are known as "super fibers" because of their unique hexagonal structure, large aspect ratio, low density, ultra-high modulus, strength and excellent electrical conductivity. Known as one of the most promising nanomaterials in the 21st century, carbon nanotube / epoxy resin composites have become a research hotspot for researchers from all over the world in recent years. However, carbon nanotubes have a large aspect ratio and strong nano-effect, and are easy to agglomerate. It is difficult to disperse in resin, especially epoxy resin with high viscosity, which obviously restricts the development of this composite material. Therefore, how to solve the dispersion of carbon nanotubes in epoxy resin is the core issue in the current research on carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/06C08K9/06C08K9/02C08K7/28
Inventor 许鑫华吴湘锋刘峰杨治强郭美卿
Owner HEBEI BEISU PIPE IND
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