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Functionalized graphene-carbon black composite granules as well as preparation method and application thereof

A technology of fossil and graphene, applied in the field of graphene-carbon black composite pellet preparation, can solve the problems of low chemical stability, poor compatibility, direct application limitation, etc., achieve good compatibility, high uniformity, reduce The effect of repulsion

Inactive Publication Date: 2021-03-26
QINGDAO UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extremely high chemical stability and extremely low surface energy of graphene lead to its poor compatibility with most polymer matrix materials, and the direct application of graphene in polymer matrix materials is limited.

Method used

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  • Functionalized graphene-carbon black composite granules as well as preparation method and application thereof
  • Functionalized graphene-carbon black composite granules as well as preparation method and application thereof
  • Functionalized graphene-carbon black composite granules as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0026] The specific preparation process of the functionalized graphene / carbon black composite pellets involved in the present embodiment is as follows:

[0027]

[0028] The specific implementation includes the following steps: use water as a solvent, add tannic acid with a mass fraction of 0.5wt%, and after dissolving, add graphene with a mass fraction of 10wt%, in an ultrasonic wave with a power of 40w, ultrasonicate in a water bath at 25°C for 10min , put graphene in 0.5-10L deionized water to form a graphene solution with a concentration of 0.5-2mg / ml, then ultrasonically treat the graphene solution for 10min-100min, add the carbon black granulation water directly, and then add the binder ( Such as plant polyphenols), the amount of the binder accounts for 3% to 6% of the granulation water, and the composite pellets are obtained through a carbon black granulator after the stirring teeth with a rotation speed controlled at 300 to 600r / min are strongly stirred and mixed, an...

Embodiment 2

[0030] Embodiment 2: take by weighing the functionalized graphene-carbon black composite pellet of 10g (functionalized graphene: carbon black composite ratio is 1:100) prepared according to the method of embodiment 1 and 50g natural rubber in internal mixer Refined for 10 minutes, and the upper and lower tablets were refined in Kailian.

[0031] like figure 1 For the TEM figure of the functionalized graphene / carbon black composite material prepared in embodiment 1, the composite interaction of functionalized graphene and carbon black suppresses the strong interaction between graphene sheets, so graphene has no agglomeration, and carbon black The black is evenly compounded and distributed on the graphene sheet.

[0032] like Figure 2-3 Shown, the functionalized graphene / carbon black composite granular material prepared by the present invention ( image 3 ) is stably and uniformly dispersed in natural rubber, graphene has no agglomeration, graphene flakes can still be observ...

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Abstract

The invention discloses functionalized graphene-carbon black composite granules as well as a preparation method and application thereof. The preparation method comprises the following steps: adding plant polyphenol into a graphene aqueous solution, carrying out ultrasonic treatment to obtain a functionalized graphene aqueous solution, directly adding the functionalized graphene aqueous solution and a binder into carbon black granulation water, strongly stirring and mixing through stirring teeth, and then obtaining composite granules through a carbon black granulator. According to the high-dispersion functionalized graphene using the natural product plant polyphenol and / or derivatives thereof as a dispersing aid, polar groups of the plant polyphenol on the functionalized graphene nanosheetcan effectively and quickly interact with polar groups on the surfaces of carbon black particles, so that agglomeration between graphene is effectively avoided; the problems that graphene is poor in dispersity and difficult to apply in a high polymer material are solved, the obtained functionalized graphene carbon black composite granules are good in stability and large in graphene dispersion amount, and application of graphene in the direction of the high polymer material can be greatly promoted.

Description

technical field [0001] The invention relates to a preparation method and application of graphene-carbon black composite pellets, and the application mainly relates to the field of polymer materials. Background technique [0002] Graphene (GE) is a two-dimensional sheet structure, the basic structural unit is a sp2 hybrid hexagon composed of carbon atoms, and the thickness is a single atomic layer or multiple atomic layers. The theoretical specific surface area of ​​GE is 2630m 2 / g, Young's modulus is 1100GPa, thermal conductivity is 5300W / (m k), electron mobility is 15000cm 2 / (v s). Due to its unique structural characteristics, it has quickly become a hot spot in many research fields such as energy electronic materials. In the field of polymer materials, many researchers have prepared high-performance GE / polymer material nanocomposites by using the structural characteristics of GE itself. However, graphene's extremely high chemical stability and extremely low surface en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/46C09C1/56C09C3/06B82Y30/00B82Y40/00C08K9/12C08K9/02C08K3/04C08L7/00
CPCC09C1/46C09C1/56C09C3/06B82Y30/00B82Y40/00C08K9/12C08K9/02C08K3/042C08K2201/011C08L7/00
Inventor 李琳辛振祥赵帅蔡瑞王玉超孙男洋郑星富王京超杜雨倩
Owner QINGDAO UNIV OF SCI & TECH
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