Graphene/organic-matter composite particles and preparation method thereof

A technology of composite particles and organic matter, applied in the direction of coating, etc., can solve problems such as adhesion, clogging, and low quality, and achieve the effects of easy implementation, simple process, and low production cost

Active Publication Date: 2018-04-24
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as mentioned above, graphene powder is small, has a large specific surface energy, and is easy to agglomerate. Under the action of gas, graphene has poor fluidity and is prone to adhesion and clogging. Insufficient, there will be problems such as drifting and difficulty in combining with the substrate

Method used

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  • Graphene/organic-matter composite particles and preparation method thereof
  • Graphene/organic-matter composite particles and preparation method thereof
  • Graphene/organic-matter composite particles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Weigh 620 grams of 500-mesh polylactic acid particles, put them into a low-temperature argon plasma processor, set the power to 90W, vacuumize to 15Pa, and treat the low-temperature argon plasma for 9 minutes. After cooling, Take it out and set aside.

[0027] (2) Weigh a carbon content of 99.5% and a specific surface area of ​​400m 2 20 grams / g graphene powder, stand-by.

[0028] (3) First add part (one-third of the mass) of organic particles that have been treated with low-temperature argon plasma into the ceramic tank, then add part (one-third of the mass) of graphene powder, and then add part (three One-half of the mass) fused corundum grinding balls are added to it, and the above process is repeated until the addition of organic particles and graphene powder is complete. Ball milling for 4 hours at a rotational speed of 300 r / min to obtain a graphene / organic compound particle preform.

[0029] (4) Sieve the ball-milled graphene / organic compound particle pref...

Embodiment 2

[0034] (1) Weigh 500 grams of 900-mesh polyethylene particles, put them into a low-temperature argon plasma processor, set the power at 120W, vacuumize to 25Pa, and treat with low-temperature argon plasma for 6 minutes. After cooling, take out stand-by.

[0035] (2) Weigh a carbon content of 99.5% and a specific surface area of ​​600m 2 45 grams / g graphene powder, stand-by.

[0036] (3) First add part (one-third of the mass) of organic particles that have been treated with low-temperature argon plasma into the ceramic tank, then add part (one-third of the mass) of graphene powder, and then add part (three One-half of the mass) fused corundum grinding balls are added to it, and the above process is repeated until the addition of organic particles and graphene powder is complete. Ball milling for 3 hours at a rotational speed of 250r / min to obtain a graphene / organic compound particle preform.

[0037] (4) The ball-milled graphene / organic compound particle preform is sieved with...

Embodiment 3

[0041] (1) Weigh 600 grams of 500-mesh polystyrene particles, put them into a low-temperature argon plasma processor, set the power to 150W, vacuumize to 30Pa, and process the low-temperature argon plasma for 3 minutes. After cooling, Take it out and set aside.

[0042] (2) Weigh a carbon content of 99.5% and a specific surface area of ​​350m 2 20 grams / g graphene powder, stand-by.

[0043] (3) First add part (one-third of the mass) of organic particles that have been treated with low-temperature argon plasma into the ceramic tank, then add part (one-third of the mass) of graphene powder, and then add part (three One-half of the mass) fused corundum grinding balls are added to it, and the above process is repeated until the addition of organic particles and graphene powder is complete. After ball milling at 250r / min for 4 hours, the graphene powder is adsorbed and mechanically occluded on the surface of the organic particles to obtain a graphene / organic composite particle pr...

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Abstract

The invention discloses graphene/organic-matter composite particles and a preparation method thereof. The graphene/organic-matter composite particles are prepared from organic-matter particles 1, a graphene powder layer 2 and a shell protective layer 3, wherein the graphene powder layer 2 is coated on the surfaces of the organic-matter particles 1, and is wrapped by the shell protective layer 3. The graphene/organic-matter composite particles are prepared by the following process steps of: pretreating the organic-matter particles, compounding organic-matter particles/graphene powder, sieving and spraying for coating and the like. The preparation method is simple in process, convenient in implementation and low in production cost. The size of the prepared graphene/organic-matter composite particles and the thickness of the graphene powder layer are controllable, and the graphene/organic-matter composite particles can be used as micropowder for jet-printing and forming raw materials andcan be used for producing graphene-modified composite materials or devices.

Description

technical field [0001] The invention provides a graphene / organic compound particle and a preparation method thereof, belonging to the technical field of graphene composite powder processing. Background technique [0002] Graphene is a two-dimensional honeycomb structure in which carbon atoms are closely arranged with sp² bonds, and its thickness is only the diameter of one carbon atom. As a new type of nano-two-dimensional material, graphene has good electrical and thermal conductivity and chemical stability. and mechanical properties. In recent years, people have been trying to combine graphene powder with metal, nonmetal and organic matter in order to obtain composite materials with excellent performance. However, due to the fineness, light weight, large specific surface energy, and easy agglomeration of graphene powder, how to uniformly disperse graphene powder into various matrix materials is a key technical problem to be solved urgently. [0003] At present, when prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08J7/06C08J7/12C08L67/04C08L23/06C08L25/06C08L27/06
CPCC08J7/0423C08J7/123C08J2323/06C08J2325/06C08J2327/06C08J2367/04C08J2461/06C08J2463/00C08J2467/08
Inventor 吴海华王曹文罗烨邢垒主悔张从阳
Owner CHINA THREE GORGES UNIV
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