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

A technology of graphene composite and carbon nanotubes, applied in the field of conductive nylon conductive masterbatch and its preparation

Active Publication Date: 2022-04-29
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 repeatedly washing the two suspensions 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, then a...

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 masterbatch of a graphene-carbon nanotube composite structure, which uses nylon as a carrier, and after carbon nanotubes and graphene are grafted and modified, they are connected by chemical bonding to form a composite structure, which is loaded on on a nylon carrier. The conductive nylon masterbatch provided by the present invention first carries out carbon nanotube and graphene surface grafting treatment, and then through the amino group grafted on the carbon nanotube surface and the glycidyl ether oxygen group grafted on the graphene surface Carry out ring-opening reaction, chemically combine graphene and carbon nanotubes, and finally prepare conductive masterbatch. While the carbon nanotube-graphene composite structure is well dispersed in the polymer, the graphene and carbon nanotubes can also be fully overlapped to give full play to the synergistic effect of the two to efficiently build a conductive network. The masterbatch can be blended with various polymers, and the conductive filler in the prepared composite material is evenly distributed, and the conductive performance is obviously improved. Can greatly reduce the amount of carbon nanotubes / graphene.

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 Patents(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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