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Multifunctional graphene/polymer masterbatch and preparation method thereof

A graphene and polymer technology, applied in the field of multifunctional graphene/polymer masterbatch and its preparation, can solve the thermal stability and fire safety performance impact of polymer materials, can not fully display the characteristics of graphene, graphene ratio Surface area reduction and other issues, to achieve the effect of improving thermal stability and flame retardant performance, changing mechanical properties and flame retardant performance, and improving hydrophobicity

Inactive Publication Date: 2017-03-29
北京圣盟科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, due to the huge specific surface area of ​​graphene and the inherent van der Waals force between graphene sheets, graphene is inherently very easy to gather and stack, resulting in a decrease in the specific surface area of ​​graphene, making it difficult to prepare the masterbatch During the process, it is not easy to disperse evenly, so that the characteristics of graphene cannot be fully displayed; in addition, due to the high thermal conductivity of graphene, the thermal stability and fire safety performance of polymer materials are affected

Method used

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  • Multifunctional graphene/polymer masterbatch and preparation method thereof
  • Multifunctional graphene/polymer masterbatch and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Preparation of graphene oxide: Using the Hummer method, add 4g graphite powder to a 250mL beaker, add 2g NaNO to it under the condition of ice water bath 3 After adding 100 mL of 98% H 2 SO 4 And stir well; slowly add 12gKMnO 4, keep the temperature of the solution above 20°C and maintain this condition for 5 minutes, then remove the ice-water bath and heat to 35°C, and maintain this condition for 30 minutes; add 150mL of water, and stir for 15 minutes, the temperature will rise to about 98°C; continue to add 150mL of 60°C 3% hydrogen peroxide, centrifuge the treated liquid for 30 minutes; wash the residue with hot water until the pH of the upper suspension is about 7; disperse the obtained powder in water for 15 minutes, and filter the black residue A homogeneous suspension was obtained afterward; graphene oxide (referred to as GO) was obtained after the suspension was lyophilized.

[0038] Graphene graft polymer B: Weigh 2g of GO synthesized above and disperse it i...

Embodiment 2

[0042] The preparation method of graphene oxide and GO-PEG5000 is the same as Example 1; the preparation method of GO-PEG5000-Zr is the same as Example 1, but the quality of zirconium oxychloride is adjusted, and the quality of zirconium oxychloride is the same as that of GO / metal The mass molar ratio is calculated as 1g:0.1mol.

[0043] The masterbatch preparation of GO-PEG5000-Zr / PE is the same as in Example 1.

Embodiment 3

[0045] The preparation method of graphene oxide and GO-PEG5000 is the same as embodiment 1;

[0046] Graphene-loaded transition metals: Dissolve nickel chloride in water and add it to 1g GO-PEG5000 ultrasonically uniformly dispersed aqueous solution. The mass of nickel chloride is calculated by using the mass molar ratio of GO / metal as 1g:0.05mol, and mechanically stirred For 2 hours, under stirring, ammonia water was added dropwise therein until the pH was 9-10, and then placed in a reaction kettle at 200° C. for 5 hours, and after suction filtration and water washing for 3-5 times, vacuum-dried to obtain multifunctional graphene (denoted as GO-PEG5000-Ni).

[0047] Preparation of masterbatch: Mix 0.2g PE and 0.2g GO-PEG300-Ni in 100mL N,N-dimethylformamide under ultrasonic dispersion and mechanical stirring, then add 0.02g melted into liquid Polyethylene wax, and 0.004g antioxidant 1010 to obtain a mixture, continuous ultrasonic dispersion and mechanical stirring to make th...

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Abstract

The invention discloses a multifunctional graphene / polymer masterbatch. A polymer A is adopted as the matrix, graphene is taken as the additive component, wherein the graphene is subjected to functionalization modification by a polymer B to improve the hydrophobicity of graphene, thus achieving good compatibility with macromolecules, effectively preventing aggregation of graphene layers, realizing uniform dispersion and no agglomeration. According to the invention, the graphene surface is loaded with a transition metal, and the selected transition metal has catalytic carbonization and free radical capture effects, and is conducive to improving the thermal stability and flame retardant properties of the polymer. The method for preparation of the multifunctional graphene / polymer masterbatch provided by the invention has the advantages of simple production process and convenient operation, is suitable for mass production, can effectively change the mechanical properties and flame retardant properties of the graphene / polymer masterbatch by change of the graphene surface loaded transition metal and chemical modification and connection of the macromolecular polymer.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a multifunctional graphene / polymer masterbatch and a preparation method thereof. Background technique [0002] Industrially modify polymer materials such as plastics, rubber, fibers, coatings, adhesives and polymer-based composites in order to obtain materials with excellent properties. There are many modifiers for polymer materials, and different functional modified masterbatches are added according to different polymer materials and performance requirements. [0003] Master batch means that in the process of plastic processing and molding, for the convenience of operation, the required various additives, fillers and a small amount of carrier resin are first mixed and kneaded, and then measured, mixed, melted and extruded by extruders and other equipment. The pellets produced by processing such as extruding and pelletizing are called master batches. Masterbatch...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/06C08K9/12C08K9/10C08K3/04C08K3/22C08K5/134C08K3/16
CPCY02P20/52C08L23/06C08L2201/02C08L2201/08C08L2205/025C08L2310/00C08K13/06C08K9/12C08K9/10C08K3/04C08K3/22C08K5/1345C08K3/16
Inventor 王为军
Owner 北京圣盟科技有限公司
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