Ultrahigh-conductivity nano carbon masterbatch as well as preparation method and application thereof

A conductive nanometer and masterbatch technology, applied in the field of ultra-high conductive nanocarbon masterbatch and its preparation, can solve the problems of difficulty, loss of graphene, difficult processing and compatibility, and achieve uniform distribution, reduce agglomeration, and improve compatibility. Effect

Inactive Publication Date: 2020-10-09
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene is a two-dimensional planar sheet structure. When it is squeezed by external force, the sheets are easy to be superimposed twice, restoring the nature of graphite, and losing the characteristics of graphene. This also makes it difficult for graphene powder to be compared with traditional Compatible with plastic processing, it is not easy to obtain graphene-filled conductive plastics directly through twin-screw extruders

Method used

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  • Ultrahigh-conductivity nano carbon masterbatch as well as preparation method and application thereof
  • Ultrahigh-conductivity nano carbon masterbatch as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) First put multi-walled carbon nanotubes: porous graphene: coupling agent into a high-mixer at a mass ratio of 1:2:0.5, and mix at a temperature of 80-90°C for 3 minutes to prepare conductive nanocarbons ;

[0035] (2) Then add 30 parts of polycarbonate, 67 parts of conductive nano-carbon, 1 part of main antioxidant, 1 part of auxiliary antioxidant, and 1 part of high-efficiency dispersant into the internal mixer for banburying, and the banburying temperature is 270°C , the rotor speed is 40r / min, and the mixing time is 30min;

[0036] (3) Then import it into a single-screw extruder for granulation to obtain an ultra-high conductive nano-carbon masterbatch material.

Embodiment 2

[0038] (1) First put multi-walled carbon nanotubes: porous graphene: coupling agent into a high-mixer at a mass ratio of 1:3:1, and mix at a temperature of 80-90°C for 5 minutes to prepare conductive nanocarbons ;

[0039] (2) Then add 47.5 parts of polycarbonate, 50 parts of conductive nano-carbon, 0.7 part of primary antioxidant, 0.8 part of auxiliary antioxidant, and 1 part of high-efficiency dispersant into the internal mixer for banburying, and the banburying temperature is 280 ° C , rotor speed 55r / min, banburying time 45min;

[0040] (3) Then import it into a single-screw extruder for granulation to obtain an ultra-high conductive nano-carbon masterbatch material.

Embodiment 3

[0042] (1) First put multi-walled carbon nanotubes: porous graphene: coupling agent into a high-mixer at a mass ratio of 1:4:2, and mix at 80-90°C for 5 minutes to prepare conductive nanocarbons ;

[0043] (2) Add 58.5 parts of polycarbonate, 40 parts of conductive nano-carbon, 0.5 part of primary antioxidant, 0.5 part of auxiliary antioxidant, and 0.5 part of high-efficiency dispersant into the internal mixer for banburying, and the banburying temperature is 280°C , rotor speed 55r / min, banburying time 45min;

[0044] (3) Then import it into a single-screw extruder for granulation to obtain an ultra-high conductive nano-carbon masterbatch material.

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Abstract

The invention discloses ultrahigh-conductivity nano-carbon masterbatch as well as a preparation method and application thereof. The ultrahigh-conductivity nano-carbon masterbatch is prepared from 30-58.5 parts of polycarbonate, 40 to 67 parts of conductive nano carbon masterbatch, 1-2 parts of an antioxidant and 0.5-1 parts of an efficient dispersant through steps of internal mixing, extrusion andgranulation. The conductive nano carbon is formed by compounding multi-walled carbon nanotubes, porous graphene and a coupling agent. The multi-walled carbon nanotubes and the porous graphene are matched for use, and due to the existence of vacancies, the multi-walled carbon nanotubes can be embedded into the porous graphene with the vacancies to play a bridging role, so that the whole system ismore communicated, and the electrical property is better; then the efficient dispersant is added to reduce agglomeration of the conductive nano carbon; compared with the direct twin-screw extrusion ofconductive materials, the method has the advantages that the agglomeration is reduced, the distribution of the conductive material is more uniform, the conductive network is smoother, and the electrical property is more uniform, so that the surface resistivity of the material is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer processing, and in particular relates to an ultrahigh conductive nano-carbon masterbatch and a preparation method thereof. Background technique [0002] Conductive plastics can be divided into antistatic materials, electrical conductors and high electrical conductors according to their electrical conductivity; they can be divided into structural conductive plastics and composite conductive plastics according to their production methods; they can be divided into antistatic materials, conductive materials and electromagnetic wave shielding according to their uses. Material. Among them, the most widely used and the most used is carbon-based conductive plastics filled with carbon-based conductive materials that are mixed and processed in the traditional plastic way as additives. [0003] Carbon-based fillers for conductive plastics, including conductive carbon black, acetylene black, carbon nanotubes...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K13/04C08K7/24C08K3/04C08J3/22
CPCC08J3/226C08J2369/00C08J2469/00C08K3/04C08K7/24C08K13/04C08K2201/001C08K2201/011C08K3/041
Inventor 杨桂生王华梁娜方永炜
Owner HEFEI GENIUS NEW MATERIALS
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