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Reduced graphene oxide polystyrene composite material and preparation method thereof

A composite material and polystyrene technology, applied in the field of reduced graphene oxide polystyrene composite material and its preparation, to achieve the effects of improving easy agglomeration, improving performance, and strong interface effect

Active Publication Date: 2021-10-22
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the strong van der Waals force and high specific surface area between graphene sheets, it is easy to accumulate secondary agglomerations, resulting in graphene / nitrile rubber composites still facing two difficult problems in the preparation process: one is Whether the nano-graphene filler can be effectively dispersed in the polymer material without easy agglomeration; the second is whether a strong interfacial interaction can be achieved between the nano-filler and the polymer matrix

Method used

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  • Reduced graphene oxide polystyrene composite material and preparation method thereof
  • Reduced graphene oxide polystyrene composite material and preparation method thereof
  • Reduced graphene oxide polystyrene composite material and preparation method thereof

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Embodiment 1

[0046] An embodiment of the present invention provides a reduced graphene oxide polystyrene composite material, the composite material is a pea-like pod structure, including cross-linked cationic polystyrene microspheres as peas and reduced graphene oxide as bean shells, wherein The mass ratio of reduced graphene oxide to crosslinked cationic polystyrene microspheres is 1:0.2.

[0047] The preparation method of above-mentioned composite material comprises the following steps:

[0048] Step 1, distilling styrene under reduced pressure, collecting fractions at 55-60°C to obtain styrene monomer;

[0049] Mix 0.56g of polyvinylpyrrolidone, 7.5mL of water and 42.5mL of absolute ethanol, sonicate for 5min, and pass through N 2 , to obtain the first reaction solution;

[0050] After mixing 7.94g styrene monomer and 0.08g azobisisobutylamidine hydrochloride, ultrasonic 5min, in N 2 Under protection, add to the above first reaction solution at 70°C and 150rpm and react for 2h to obtai...

Embodiment 2

[0055] An embodiment of the present invention provides a reduced graphene oxide polystyrene composite material, the composite material is a pea-like pod structure, including cross-linked cationic polystyrene microspheres as peas and the reduced graphene oxide as bean shells , wherein the mass ratio of reduced graphene oxide to crosslinked cationic polystyrene microspheres is 1:0.25.

[0056] The preparation method of above-mentioned composite material comprises the following steps:

[0057] Step 1, distilling styrene under reduced pressure, collecting fractions at 55-60°C to obtain styrene monomer;

[0058] Mix 0.66g of polyvinylpyrrolidone, 8mL of water and 46mL of absolute ethanol, sonicate for 4min, pass through N 2 , to obtain the first reaction solution;

[0059] After mixing 7.94g styrene monomer and 0.083g azobisisobutylamidine hydrochloride, ultrasonic 6min, in N 2 Under protection, add it to the first reaction solution above and react for 2.5 hours under the condit...

Embodiment 3

[0064] An embodiment of the present invention provides a reduced graphene oxide polystyrene composite material, the composite material is a pea-like pod structure, including cross-linked cationic polystyrene microspheres as peas and the reduced graphene oxide as bean shells , wherein the mass ratio of reduced graphene oxide to crosslinked cationic polystyrene microspheres is 1:0.5.

[0065] The preparation method of above-mentioned composite material comprises the following steps:

[0066] Step 1, distilling styrene under reduced pressure, collecting fractions at 55-60°C to obtain styrene monomer;

[0067] Mix 0.50g of polyvinylpyrrolidone, 7.5mL of water and 41mL of absolute ethanol, sonicate for 6min, and pass through N 2 , to obtain the first reaction solution;

[0068] After mixing 7.94g styrene monomer and 0.076g azobisisobutylamidine hydrochloride, ultrasonic 5min, in N 2 Under protection, add to the above first reaction solution at 72°C and 150rpm and react for 1.5h ...

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Abstract

The invention relates to the technical field of polymer composite materials, and particularly discloses a reduced graphene oxide polystyrene composite material and a preparation method thereof. The composite material is of a pea pod-like structure and comprises reduced graphene oxide serving as pea pod shells and cross-linked cationic polystyrene microspheres dispersed between sheet layers of the reduced graphene oxide. According to the preparation method disclosed by the invention, the cross-linked cationic polystyrene microspheres are inserted into the reduced graphene oxide layer, so that a single-layer graphene structure is realized, and the problem that the graphene oxide is easy to agglomerate due to multiple lamellas is solved; meanwhile, the cross-linked cationic polystyrene has a spherical structure and good regularity, and is combined with the single-sheet-layer reduced graphene oxide, so that the reduced graphene oxide polystyrene composite material has excellent heat resistance, the thermal decomposition temperature of the composite material reaches 393 DEG C, and the maximum instantaneous decomposition temperature of the composite material reaches 431 DEG C.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a reduced graphene oxide polystyrene composite material and a preparation method thereof. Background technique [0002] As an ideal functional filler, graphene has excellent comprehensive properties. Studies have shown that graphene can greatly improve the mechanical properties of polymer composites under the condition of low addition amount, and at the same time, it can also endow polymers with some special functions, such as electrical conductivity, thermal conductivity and Electromagnetic shielding, etc. Therefore, research on graphene / polymer composites has attracted more and more attention in recent years. [0003] However, due to the strong van der Waals force and high specific surface area between graphene sheets, it is easy to accumulate secondary agglomerations, resulting in two difficult problems in the preparation process of graphene / nitrile rubbe...

Claims

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Application Information

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IPC IPC(8): C08L25/08C08K3/04C08F212/08C08F212/36
CPCC08K3/042C08F212/08C08L25/08C08F212/36
Inventor 赵雄燕刘全中董亚茹
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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