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High-conductivity graphene conducting resin and preparation method thereof

A high conductivity, graphene technology, applied in the field of materials, can solve problems such as easy agglomeration and affecting performance, and achieve the effects of simple preparation process, industrialization, good ductility and elasticity

Inactive Publication Date: 2012-10-24
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene is prone to agglomeration in practical applications, and the agglomeration will affect its performance. It is particularly important to directly provide graphene with good dispersion and stable properties.

Method used

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Examples

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preparation example Construction

[0040] The present invention also provides a method for preparing the high-conductivity graphene conductive adhesive described in any of the above-mentioned embodiments, comprising the steps of:

[0041] Conductive agent premixing: mixing polymer monomers with graphene, or mixing polymer monomers, polymers and graphene, to obtain conductive adhesive prepolymers;

[0042] Preparation of conductive adhesive: add an initiator to the prepolymer of the conductive adhesive, or use photoinitiation or thermal initiation to polymerize the polymer monomers to prepare the conductive adhesive.

[0043] Alternatively, include the following steps:

[0044] Conductive agent pre-mixing: add appropriate solvent to graphene and mix to make graphene infiltrated;

[0045] Polymer premixing: add appropriate solvent to the polymer and mix to make the polymer swell;

[0046] Preparation of conductive adhesive: mix the above conductive agent premix and polymer premix, add solvent and stir to prepar...

Embodiment 1

[0050] Step 1, conductive agent premixing: take 140 g carboxyl mass content as 2% and epoxy group mass content as 5% graphene, 20 g conductive carbon black, in 600 g of N-methylpyrrolidone (N-methyl-2 -pyrrolidone, the abbreviation is NMP) solvent premixed, using ultrasonic mixing for 1 hour, the ultrasonic power is 200 W, so that graphene and conductive carbon black are infiltrated;

[0051] Step 2, adhesive premixing: add 600g of NMP solvent to 40g of polyvinylidene fluoride (PVDF) and mix, and use ultrasonic mixing for 2 hours, the power of ultrasonic is 300 W, so that PVDF is swollen;

[0052] Step 3, preparation of the conductive adhesive: the conductive agent premix was mixed with the adhesive premix, and 600 g of NMP solvent was added and stirred by mechanical stirring at 200 rpm for 8 hours to prepare the conductive adhesive.

Embodiment 2

[0054] The present embodiment adopts the same raw material parameters and methods as in Example 1, except that the amount of graphene whose carboxyl content is 2% and epoxy group content is 5% is changed to 1980 g, and the amount of PVDF is changed to 160 g.

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PUM

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Abstract

The invention discloses high-conductivity graphene conducting resin and a preparation method thereof. The conducting resin comprises, by mass, 0.1-98% of graphene and 2-99.9% of a binding agent; the grapheme contains polarity functional groups, the polarity functional groups account for 0-30% of the quantity of the grapheme, the binding agent is a polymer or / and a polymer monomer, when the polymer is used as a binding agent, the conducting resin also contains a solvent, the conducting resin comprises, by mass, 1-90% of the solvent, and the sum of all quantity contents of components in the conducting resin is 100%. According to the conducting resin, the electrical conductivity is excellent, the heat radiation performance is good, the conducting resin has adjustable light transmission performance and good ductility and elasticity, the preparation method is simple, the industrialization is easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a high-conductivity graphene conductive glue and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional carbon atom crystal discovered in 2004, which is a single-layer or multi-layer extremely thin carbon material. Since the day it was discovered, it has become one of the research hotspots in the fields of carbon materials, nanotechnology, condensed matter physics and functional materials. Graphene is the building block sp 2 The basic source material of hybrid carbon materials, which can form materials such as fullerenes, carbon nanotubes, and graphite by curling or stacking. Graphene has many peculiar physical and chemical properties. Graphene is a substance without an energy gap, showing metallicity; in single-layer graphene, each carbon atom has an unbonded electron, so it has very good conductivity ; Holes and electrons in graphene are...

Claims

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Application Information

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IPC IPC(8): C09J127/16C09J127/18C09J183/04C09J101/26C09J133/12C09J133/08C09J9/02
Inventor 杨全红游从辉魏伟李宝华康飞宇
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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