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Graphene microchip electric conduction master batch 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, poor dispersion of graphene, and low conductivity of conductive masterbatch, and achieve low cost and easy uniformity Disperse and achieve the effect of large-scale industrial production

Active Publication Date: 2017-09-26
东营睿港投资服务有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • Graphene microchip electric conduction master batch and preparation method thereof

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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 metallic tin, set the stirring speed to 100-500 rpm, carry out 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 / ...

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...

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Abstract

The invention provides a graphene microchip electric conduction master batch and a preparation method thereof. The graphene microchip electric conduction master batch is characterized in that graphite powder is mixed with metallic tin, tin is melted in a high-temperature condition, graphite is peeled into graphene microchip glass bead quenching clad layer through stirring, smashing and shearing, so that graphene is stably and uniformly dispersed into the metallic tin and clad in glass beads, furthermore, tin-stabilized graphene particles are formed through grinding, and the tin-stabilized graphene particles are dispersed into a high polymer material to prepare and obtain the graphene microchip electric conduction master batch through a screw extruder. The graphene microchip electric conduction master batch has good dispersibility, and is applicable to electric conduction of various electric conduction 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

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Application Information

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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
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