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Epoxy resin lightweight high-strength composite material easy to disperse carbon nano-tubes, and preparation method thereof

A technology of high-strength composite materials and carbon nanotubes, which is applied in the field of epoxy resin lightweight high-strength composite materials and preparation, and can solve complex and other problems

Inactive Publication Date: 2013-02-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are either difficult to be specifically applied in the production of epoxy resin, or need to be implemented with complex and expensive equipment or through a very complicated process. Therefore, it is necessary to develop a carbon nanotube dispersion technology that is convenient for use in epoxy composites. will have high practical value

Method used

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  • Epoxy resin lightweight high-strength composite material easy to disperse carbon nano-tubes, and preparation method thereof
  • Epoxy resin lightweight high-strength composite material easy to disperse carbon nano-tubes, and preparation method thereof
  • Epoxy resin lightweight high-strength composite material easy to disperse carbon nano-tubes, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Raw material composition and mass and number ratio are:

[0026]

[0027] Fully disperse 0.45g of γ-aminopropyltriethoxysilane coupling agent in a mixed solution of 150g of ethanol / distilled water (volume ratio 9:1), then mix 36g of cm 3 The hollow glass microspheres were soaked in it for 12 hours and then filtered, then dried in a blast drying oven at 125°C for 4 hours, and amino groups were introduced on the surface; then 14.4g of carboxylated The multi-walled carbon nanotubes were ultrasonically dispersed in 200ml of absolute ethanol for standby, the ultrasonic time was 3h, and the power was 600W; at the same time, 3.6g of carboxylated multi-walled carbon nanotubes with a diameter of 20nm and a length of 500nm were ultrasonically dispersed In 300g of DMF, the ultrasonic time is 2h, and the power is 600W; then the aminated hollow glass microspheres are added to the DMF system and reacted at 145°C for 10h to complete the grafting reaction, wherein the stirring rate...

example 2

[0029] Raw material composition and mass and number ratio are:

[0030]

[0031] Fully disperse 0.9g of γ-aminopropyltriethoxysilane coupling agent in a mixed solution of 150g of ethanol / distilled water (volume ratio 9:1), and then 4.5g of / cm 3The hollow glass microspheres were soaked in it for 12 hours and then filtered, then dried in a blast drying oven at 125°C for 4 hours, and amino groups were introduced on the surface; then 3.6g of carboxylated The single-walled carbon nanotubes were ultrasonically dispersed in 100ml of absolute ethanol for standby, the ultrasonic time was 2h, and the power was 600W; at the same time, 3.6g of carboxylated single-walled carbon nanotubes with a diameter of 20nm and a length of 500nm were ultrasonically dispersed In 300g of DMF, the ultrasonic time is 2h, and the power is 600W; then the aminated hollow glass microspheres are added to the DMF system and reacted at 145°C for 10h to complete the grafting reaction, wherein the stirring rat...

example 3

[0033] Raw material composition and mass and number ratio are:

[0034]

[0035] Fully disperse 1.8g of γ-aminopropyltriethoxysilane coupling agent in a mixed solution of 150g of ethanol / distilled water (volume ratio 9:1), then 45g of cm 3 The hollow glass microspheres were soaked in it for 12 hours and then filtered, then dried in a blast drying oven at 125°C for 4 hours, and amino groups were introduced on the surface; then 7.2g of carboxylated The multi-walled carbon nanotubes were ultrasonically dispersed in 130ml of absolute ethanol for standby, the ultrasonic time was 2.5h, and the power was 600W; at the same time, 3.6g of carboxylated multi-walled carbon nanotubes with a diameter of 20nm and a length of 500nm were ultrasonically Disperse in 300g of DMF, ultrasonic time is 2h, and the power is 600W; then add the aminated hollow glass microspheres to the DMF system and react at 145°C for 10h to complete the grafting reaction, and the stirring rate is 200r / min; After ...

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Abstract

The invention relates to an epoxy resin lightweight high-strength composite material which is easy to disperse carbon nano-tubes, and a preparation method thereof. According to the invention, hollow glass superbeads are filtered in a mixed system of ethanol and water containing an amino silane coupling agent, and are dried and aminated in a drying oven at a temperature of 125 DEG C, such that amino groups are introduced to the surfaces of the glass superbeads. Carbon nano-tubes in N,N-dimethylformamide are sufficiently dispersed by using supersonic waves, and the hollow glass superbeads are added into the solvent system, and are subject to a reaction for 10 hours under a temperature of 145 DEG C, such that a keyed joint reaction is completed; Carbon nano-tubes in waterless ethanol are sufficiently dispersed by using supersonic waves, epoxy resin is added to the obtained ethanol mixed liquid; alcohol is volatilized at a temperature of 70 DEG C while stirring; when alcohol is completelyvolatilized, the mixture is added to a mixture of a curing agent; air bubbles are removed under high vacuum, and the mixture is cured at a temperature of 70 DEG C, and is then cured at a temperature of 95 DEG C. With the composite material provided by the invention, a high content of carbon nano-tubes can be well dispersed in epoxy resin, the density of the composite material can be reduced, the strength of the composite material can be improved, and conductivity of the composite material can be greatly improved.

Description

technical field [0001] The invention relates to an epoxy resin light-weight high-strength composite material which is easy to disperse carbon nanotubes and a preparation method thereof. Background technique [0002] As a one-dimensional nanomaterial, carbon nanotubes are light in weight, perfectly connected in a hexagonal structure, and have many abnormal mechanical, electrical and chemical properties. Nanotubes are 10,000 times thinner than human hair, and 100 times harder than steel. times, has excellent thermal conductivity, electrical conductivity better than gold, and superconductivity at extremely low temperatures. Since it came out in 1991, it has become a research hotspot for scientists from all over the world, and is called one of the most promising nanomaterials in the 21st century by scientists. In recent years, with the in-depth research of carbon nanotubes and nanomaterials, their broad application prospects have been continuously revealed, and carbon nanotubes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K13/06C08K9/06C08K9/02C08K7/28C08K7/00C08K3/04
Inventor 许鑫华杨治强吴湘锋郭美卿范海南刘峰
Owner TIANJIN UNIV