A kind of graphene microchip conductive masterbatch and preparation method thereof

A technology of graphene microchips and graphene, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of low yield, low conductivity of conductive masterbatch, poor dispersion of graphene, etc., and achieve low cost and large scale Chemical industry production, easy to disperse evenly

Active Publication Date: 2019-08-20
东营睿港投资服务有限责任公司
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the poor dispersion of graphene in the conductive masterbatch prepared in the prior art, the low conductivity of the conductive masterbatch, and the technical defects of low yield, the present invention proposes a graphene microchip conductive masterbatch and a preparation method thereof. Make the graphene micro flakes stable and evenly dispersed in the metal tin, and further add glass micro beads in the quenching, so that the coating is quenched on the surface of the glass micro beads, thereby effectively preventing the agglomeration of graphene, and the formed macroscopic graphene particles are in the polymer Good dispersion in the carrier

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of graphene microchip conductive masterbatch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] a. Mix 25 parts by weight of flake graphite with 50 parts by weight of metal tin, set the stirring speed to 100-500 rpm, perform mechanical vibration and stirring, heat to 230-350 ° C until the tin melts and becomes liquid, and continue to maintain mechanical stirring , the stirring time is 3 hours, the graphite powder is crushed and sheared to form graphene microflakes, and evenly dispersed in the metal tin liquid to obtain the graphene microflakes / metal tin composite liquid;

[0030] b. 30 parts by weight of glass beads with a particle size of 50 μm are mixed with the graphene microflake / metal tin composite liquid obtained in step a, and sprayed and quenched at a cooling rate of 60-100° C. / s to stabilize the graphene microflakes Uniformly exist in metal tin, and coated on glass beads;

[0031] c, put the glass microspheres coated with graphene microflakes / metal tin composite obtained in step b into the ball mill, set the ball mill speed to be 200-800 rpm, and mechanic...

Embodiment 2

[0034] a. Mix 30 parts by weight of pyrolytic graphite with 55 parts by weight of metal tin, set the stirring speed to 100-500 rpm, perform mechanical vibration and stirring, heat to 230-350 ° C until the tin melts and becomes liquid, and continue to maintain the mechanical Stir for 5 hours, crush and shear the graphite powder to form graphene microflakes, and disperse evenly in the metal tin liquid to obtain graphene microflakes / metal tin composite liquid;

[0035] b. 30 parts by weight of glass beads with a particle size of 80 μm are mixed with the graphene microflake / metal tin composite liquid obtained in step a, and sprayed and quenched at a cooling rate of 60-100° C. / s to stabilize the graphene microflakes Uniformly exist in metal tin, and coated on glass beads;

[0036] c, put the glass microspheres coated with graphene microflakes / metal tin composite obtained in step b into the ball mill, set the ball mill speed to be 200-800 rpm, and mechanically grind the graphene / metal...

Embodiment 3

[0039] a. Mix 30 parts by weight of graphite oxide with 50 parts by weight of metal tin, set the stirring speed to 100-500 rpm, perform mechanical vibration and stirring, heat to 230-350 ° C until the tin melts and becomes liquid, and continue to maintain mechanical stirring , the stirring time is 4 hours, the graphite powder is crushed and sheared to form graphene microflakes, and evenly dispersed in the metal tin liquid to obtain the graphene microflakes / metal tin composite liquid;

[0040] b. 35 parts by weight of glass beads with a particle size of 90 μm are mixed with the graphene microflake / metal tin composite liquid obtained in step a, and sprayed and quenched at a cooling rate of 60-100° C. / s to stabilize the graphene microflakes Uniformly exist in metal tin, and coated on glass beads;

[0041] c, put the glass microspheres coated with graphene microflakes / metal tin composite obtained in step b into the ball mill, set the ball mill speed to be 200-800 rpm, and mechanic...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention proposes a graphene microchip conductive masterbatch and a preparation method thereof, which is characterized in that graphite powder is mixed with metal tin, the tin is melted under high temperature conditions, the graphite is peeled into graphene microchips by stirring, crushing and shearing, and then mixed with glass The microbeads are quenched and coated, so that graphene is stably and uniformly dispersed in metal tin and coated on glass microspheres. Further, graphene particles stabilized by tin are formed by grinding, dispersed in polymer materials and prepared by a screw extruder. The graphene microchip conductive masterbatch has good dispersibility, and is suitable for the conduction of various conductive plastics, electronic plastics, and photovoltaic plastics.

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a graphene microchip conductive masterbatch and a preparation method thereof. Background technique [0002] Graphene is a planar carbon nanomaterial composed of a layer of carbon atoms. It is the thinnest known two-dimensional material, with a thickness of only 0.335nm. It is composed of a hexagonal lattice. Graphene is the thinnest and hardest nano-material known in the world. It is almost completely transparent and only absorbs 2.3% of light; its thermal conductivity is as high as 5300W / m K, which is higher than that of carbon nanotubes and diamonds. The electron mobility exceeds 15000cm 2 / V·s, which is higher than that of carbon nanotubes or silicon crystals, while the resistivity is only about 10 -6 Ω·cm, lower than copper or silver, is the material with the smallest resistivity in the world. The use of graphene conductive masterbatch as an additive for various conductive...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08L23/06C08L23/12C08L77/00C08L71/00C08K9/10C08K7/20C08K3/04C08K3/08B22F1/00C08J3/22
CPCC08J3/226C08K3/04C08K3/08C08K7/20C08K9/10C08L25/06C08J2325/06C08J2423/06C08J2423/12C08J2425/06C08J2471/00C08J2477/00C08K2201/001C08L2205/025B22F1/108C08L23/06C08L23/12C08L77/00C08L71/00
Inventor 陈庆王镭迪曾军堂
Owner 东营睿港投资服务有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap