Conductive nylon masterbatch with graphene-carbon nanotube composite structure, and preparation method thereof

A carbon nanotube composite and graphene composite technology, applied in the field of functional polymer composite materials

Active Publication Date: 2020-12-04
北京航天凯恩新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent also cannot solve the defects of large addition of carbon nanotubes and graphene

Method used

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  • Conductive nylon masterbatch with graphene-carbon nanotube composite structure, and preparation method thereof
  • Conductive nylon masterbatch with graphene-carbon nanotube composite structure, and preparation method thereof
  • Conductive nylon masterbatch with graphene-carbon nanotube composite structure, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Take two 1000ml beakers, respectively configure 400g of mixed concentrated acid of nitric acid and sulfuric acid at a ratio of 1:3, add 5 grams of commercially available graphite and 5 grams of carbon nanotubes to them respectively, place the two beakers in an ultrasonic water tank, adjust The temperature of the water tank is 65°C, and after ultrasonic oscillation at a frequency of 25KHz for 4 hours, the two mixed slurries obtained are centrifuged at 4000r / min for 10 minutes to separate the two mixed slurries into separate layers. In this way, the bottom black graphene suspension and carbon nanotube suspension are separated. After the two suspensions were washed repeatedly with water to make the pH value reach 6, the two suspensions were dried in a vacuum oven at 70° C. to constant weight to obtain 4.8 grams of acidified graphene and 4.8 grams of acidified carbon nanotubes.

[0062] Take another two 500ml beakers, add 24 grams of aliphatic vinyl ether (A) respectively, th...

Embodiment 2

[0071] Take two 3000ml beakers, respectively configure 1000g of mixed concentrated acid of nitric acid and sulfuric acid at a ratio of 1:3, add 50 grams of graphene to one of the beakers, add 50 grams of carbon nanotubes to the other beaker, and place the beaker in an ultrasonic water tank In the process, adjust the temperature of the water tank to 70°C and ultrasonically oscillate at a frequency of 40KHz for 8 hours, then use a centrifuge to separate the two mixed slurries at 4000r / min for 10 minutes to separate the mixed slurries , so as to separate the bottom black graphene suspension and carbon nanotube suspension. The suspension was repeatedly washed with water to make the pH value reach 6, and the two suspensions were dried in a vacuum oven at 80° C. to constant weight to obtain 48.5 grams of acidified graphene and 48.3 grams of acidified carbon nanotubes.

[0072] Take another two 1000ml beakers, add 100 grams of aliphatic vinyl ether (D) respectively, then add 300 gram...

Embodiment 3

[0082] Take two 3000ml beakers, respectively configure 2000g of mixed concentrated acid of nitric acid and sulfuric acid at a ratio of 1:3, add 20 grams of commercially available graphene and 10 grams of carbon nanotubes therein, and place the two beakers in an ultrasonic water tank. Adjust the temperature of the water tank to 60°C, and ultrasonically oscillate at a frequency of 25KHz for 4 hours, then use a centrifuge to separate the two mixed slurries at 4000r / min for 10 minutes, so that the two mixed slurries are separated into layers , to separate the bottom black graphene suspension and carbon nanotube suspension. Wash the two suspensions repeatedly with clean water to make the pH value above 6, then dry the two suspensions in a vacuum oven at 75°C to constant weight to obtain 19.6 grams of acidified graphene and 9.8 grams of acidified carbon nanotubes .

[0083]Take another two 1000ml beakers, add 200 grams of aliphatic vinyl ether (A) respectively, then add 300 grams o...

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Abstract

The invention provides a conductive nylon master batch with a graphene carbon nanotube composite structure. The conductive nylon master batch is prepared by taking nylon as a carrier, carrying out grafting modification of carbon nanotubes and graphene, connecting the carbon nanotubes and graphene in a chemical bonding manner to form a composite structure and loading the composite structure on thenylon carrier. According to the conductive nylon master batch provided by the invention, firstly, surface grafting treatment is carried out on the carbon nanotubes and graphene, then ring-opening reaction is carried out on amino groups grafted on the surfaces of the carbon nanotubes and glycidyl ether oxy groups grafted on the surfaces of the graphene, the graphene and the carbon nanotubes are chemically combined, and finally, the conductive master batch is prepared. The carbon nanotube-graphene composite structure is well dispersed in a polymer, and meanwhile, graphene and the carbon nanotubes can be fully lapped, so that the synergistic effect of graphene and the carbon nanotubes is exerted, and a conductive network is efficiently constructed. The master batch can be blended with variouspolymers, a conductive filler in the prepared composite material is uniformly distributed, and the conductivity is obviously improved. And the use amount of the carbon nanotube/graphene can be greatly reduced.

Description

technical field [0001] The application relates to the field of functional polymer composite materials, in particular to a graphene-carbon nanotube composite conductive nylon conductive masterbatch and a preparation method thereof. Background technique [0002] Graphene and carbon nanotubes are typical nano-carbon materials. The structural characteristics of both make them have special surface effects, small size effects, quantum size effects and macroscopic quantum tunneling effects. The composite materials are therefore also Can exhibit unique mechanical, thermal, magnetic, electrical and optical properties. Using carbon nanotubes and graphene as fillers to combine with polymers can change polymer materials from insulators to semiconductors, which is one of the research hotspots in the direction of functional polymer composites in recent years. Theoretically, the use of carbon nanotubes or graphene to improve the conductivity of polymer materials requires the construction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K3/04C08K9/10C08K9/02C08J3/22
CPCC08J3/226C08J2477/02C08J2477/06C08K9/02C08K9/10C08K3/041C08K3/042C08J2377/02C08K2201/001
Inventor 孙福伟郑骏驰姜联东孙清友于茂杰孙兆懿安峻莹赵亚风郭新利钱晶孟征苏昱姜昊陈婧舒帮建吴超刘兵
Owner 北京航天凯恩新材料有限公司
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