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Polyolefin graphene nanocomposite material, and preparation method thereof

A nanocomposite material and nanocomposite powder technology are applied in the field of polyolefin graphene nanocomposite materials and their preparation, which can solve the problems of difficulty in obtaining nanometer-level polymer graphene nanocomposite materials, poor dispersion effect, etc., and achieve a wide range of applications. Adaptability and industrial compatibility, effects of improved elongation at break, improved impact strength

Active Publication Date: 2017-03-22
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the defects that the existing methods for dispersing graphene have poor dispersion effect and it is difficult to obtain nano-scale polymer graphene nanocomposites, the present invention thus provides a preparation method for polyolefin graphene nanocomposites

Method used

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  • Polyolefin graphene nanocomposite material, and preparation method thereof
  • Polyolefin graphene nanocomposite material, and preparation method thereof
  • Polyolefin graphene nanocomposite material, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Put commercially available high-density polyethylene (HDPE) into the grinding disc type solid-phase force chemical reactor, pass cooling circulating water at room temperature during the grinding process, and control the temperature of the grinding disc surface at 20°C, the pressure at 10KN, and the rotation speed at 50 rpm / min, cyclic grinding 15 times to obtain ultrafine high-density polyethylene powder with an average volume particle size of about 300 μm. Mechanically mix 100 parts by weight of high-density polyethylene ultrafine powder with 3 parts by weight of reduced graphite oxide, add it to the disc type solid-phase mechanochemical reactor again, keep the parameters unchanged, and continue grinding for 15 times to obtain high-density Polyethylene / graphene composite powder, the average particle size is about 100μm.

[0045] Add high-density polyethylene / graphene composite powder to high-density polyethylene pure material and dilute it to a graphene mass fraction ...

Embodiment 2

[0048] Put commercially available high-density polyethylene (HDPE) into the disc-type solid-phase mechanochemical reactor, pass cooling circulating water at room temperature during the milling process, and control the temperature of the disc surface at 20°C, the pressure at 15KN, and the speed at 50 rpm / min, and circularly grind 20 times to obtain ultrafine high-density polyethylene powder with an average volume particle size of about 150 μm. Mechanically mix 100 parts by weight of low-density polyethylene ultra-fine powder with 1.5 parts by weight of reduced graphite oxide, add it to a disc-type solid-phase mechanochemical reactor again, keep the parameters constant, and continue to grind for 20 times to obtain high-density polyethylene powder. Ethylene / graphene composite powder, the average particle size is about 80μm.

[0049] The high-density polyethylene / graphene composite powder is added to the high-density polyethylene pure material and diluted to a graphene mass fract...

Embodiment 3

[0052] Put commercially available high-density polyethylene (HDPE) into the disc-type solid-phase mechanochemical reactor, pass cooling circulating water at room temperature during the milling process, and control the temperature of the disc surface at 10°C, the pressure at 15KN, and the speed at 100 rpm / min, cyclic grinding 10 times to obtain ultrafine high-density polyethylene powder with an average volume particle size of about 300 μm. 100 parts by weight of high-density polyethylene ultrafine powder is mechanically mixed with 10 parts by weight of ball milling mechanically exfoliated graphene, and then added to the disc type solid-phase mechanochemical reactor, keeping the parameters constant, and continuing to grind 20 times to obtain a low Density polyethylene / graphene composite powder, the average particle size is about 100μm.

[0053] The high-density polyethylene / graphene composite powder is added to the high-density polyethylene pure material and diluted to a graphe...

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Abstract

The invention belongs to the field of polymer / graphene composite materials, and more specifically relates to a polyolefin graphene nanocomposite material, and a preparation method thereof. The preparation method comprises following steps: polyolefin is smashed using a solid phase mechanical reactor, graphene is added, and an obtained mixture is mixed to be uniform; the mixture is grinded using the solid phase mechanical reactor so as to obtain a polyolefin graphene composite powder; the polyolefin graphene composite powder is subjected to extrusion, injection molding or hot press molding so as to obtain the polyolefin graphene nanocomposite material. The preparation method is capable of dispersing graphene preferably, is low in cost, and is friendly to the environment; and the obtained polyolefin graphene nanocomposite material is high in yield strength and impact strength.

Description

technical field [0001] The invention belongs to the field of polymer / graphene composite materials, and in particular relates to a polyolefin graphene nanocomposite material and a preparation method thereof. Background technique [0002] Since the discovery of graphene with a two-dimensional structure, it has been the focus and hotspot of research in the field of materials because of its unique mechanical properties, electrical properties and thermal properties. Polymer / graphene nanocomposites are an important application field of graphene. In theory, graphene is a structure in which a single layer of carbon atoms is embedded in a honeycomb lattice. sp 2 Hybridized carbon atoms endow graphene with a planar structure and also give graphene a very high specific surface area. Therefore, when graphene is added as a nano-filler to the polymer matrix for processing, graphene is very prone to agglomeration, and the specific surface area of ​​graphene after agglomeration is greatl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K3/04C08L23/14C08L23/08
CPCC08K3/04C08K2201/003C08K2201/006C08K2201/011C08L2207/062C08L2207/066C08L23/06C08L23/14C08L23/0853
Inventor 白时兵王琪危平福华正坤
Owner SICHUAN UNIV
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