Preparation method of modified superfine graphene

An ultra-fine graphite and graphene technology, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of high bulk density, poor particle dispersion performance, poor surface fluidity, etc., and achieve low bulk density and dispersion performance. Good results

Active Publication Date: 2017-04-05
江苏华力索菲新材料有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the current man-made smog has poor particle dispersion p

Method used

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[0015] The present invention will now be described in further detail in conjunction with the embodiments. The application of the present invention is not limited to the following embodiments, and any form modification to the present invention will fall into the protection scope of the present invention.

[0016] The method for preparing modified ultrafine graphene of the present invention includes the following steps:

[0017] (1) Grinding: First place the graphene in a grinder, add 500 ml of deionized water, and then add 0.25 g of hyperdispersants of the brands CH18 and CH-7, from zirconia or zirconia with a spherical diameter of 0.5-3mm Balls made of corundum were ground for 20 hours to obtain graphene slurry material;

[0018] (2) Classification treatment: Put the graphene slurry material into a high-speed centrifugal sedimentation classifier, where the graphene slurry material with a particle size of ≤1 μm is concentrated in the middle of the classifier, and is drawn out and stor...

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Abstract

The invention discloses a preparation method of modified superfine graphene. The preparation method includes the following steps that (1), graphene is subjected to grinding, specifically, the grapheme is placed in a grinder and is ground to obtain graphene pasty material; (2), the graphene pasty material is subjected to stage treatment, specifically, the graphene pasty material is put into a high-speed centrifugal settling type grader, the graphene pasty material whose particle diameter is less than or equal to 1 [mu]m is concentrated in the middle of the grader, and is stored in a storage tank after being led out; and (3), the graphene pasty material whose particle diameter is less than or equal to 1 [mu]m is subjected to kneading treatment, specifically, the graphene pasty material whose particle diameter is less than or equal to 1 [mu]m is put into a kneading reaction device, a surface treating agent is added, the kneading treatment is conducted, the superfine graphene is obtained after being kneaded, and in the period, the accumulating density of superfine graphene powder is controlled within 0.5-1.2. According to the preparation method, the prepared modified superfine graphene particles have the characteristics of being good in dispersing performance, low in accumulating density and the like. Partial shielding and disturbing to electromagnetic waves and wireless signals are achieved, and the effect of gaining advantages in information competition is realized.

Description

technical field [0001] The invention relates to a preparation method of modified ultrafine graphene. Background technique [0002] Smog is a natural phenomenon of air pollution. The particles in the smog are generally PM2.5, that is, the particle diameter is less than 2.5 microns. According to this phenomenon, materials with anti-electromagnetic wave and signal interference can be processed into particles with a diameter of 1-2 microns or less. Through appropriate surface treatment technology, they can form airgel fog with airflow and water molecules in the atmosphere. haze. Because these particles have the effect of interfering with electromagnetic waves, the formed smog has the desired effect of resisting electromagnetic waves and signal interference, which can play a certain role in winning the information war. [0003] However, at present, such man-made smog has poor particle dispersion performance, high bulk density, and poor surface fluidity, resulting in weak anti-e...

Claims

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Application Information

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IPC IPC(8): C01B32/194
CPCC01B2204/20C01B2204/32
Inventor 葛晨鑫颜颢葛晓陵
Owner 江苏华力索菲新材料有限公司
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