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Screening method and screening device for screening nano materials

A technology of nanomaterials and screening equipment, applied in chemical instruments and methods, solid separation, separation of solids from solids by air flow, etc., can solve problems such as nanomaterial screening

Active Publication Date: 2017-10-03
SHENZHEN HADESHENG PRECISION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is currently no method that can successfully sieve nanomaterials such as carbon nanotubes into different particle size ranges. It is necessary to study a sieving method that can effectively sieve and keep carbon clusters from agglomerating.

Method used

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  • Screening method and screening device for screening nano materials

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Embodiment 1

[0024] The invention provides a screening method for nanometer materials, comprising the following steps: using ion wind to blow the nanometer materials, dispersing the nanometer materials and separating the nanomaterials in different particle size ranges. The nanomaterial is any one of carbon nanospheres, carbon nanotubes, nano oxide particles, nano metal particles and graphene. The wind volume of the ion wind is 35-600CFM. The sieving method also includes setting at least one nanometer material collecting device along the wind blowing direction, and the nanometer material collecting device is used to collect the nanometer material within a certain particle size range. The ionic wind can promote the electrical neutralization of nanomaterials and prevent the agglomeration of nanomaterials. Under the blowing of ionic wind, nanomaterials with different particle sizes travel different distances and then settle down. The particles with larger particle sizes settle at a shorter dis...

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Abstract

The invention discloses a screening method and screening device for screening nano materials. According to the screening method, ionic wind is adopted to blow the nano materials, to disperse the nano materials and separate the nano materials in different particle size ranges. The screening device comprises a nano material storage device, a screening chamber, an ion fan and a nano material collecting device. The nano material storage device comprises a discharging port, and the discharging port is provided with an air inlet end and an air outlet end. The ion fan comprises an air outlet structure. The air outlet structure is connected with the air inlet end, and the air outlet end is disposed in the screening chamber. The ion fan blows ionic wind towards the discharging port through the air outlet structure. The nano materials are blown into the screening chamber from the air outlet end under the effect of the ionic wind, and the ionic wind can effectively disperse the nano materials to prevent the nano materials from aggregating. Under the blowing by the ionic wind, the nano materials with the different particle sizes move at different distances and then subside, so that grain screening is implemented.

Description

technical field [0001] The invention relates to the technical field of nanomaterial screening, in particular to a nanomaterial screening method and screening equipment. Background technique [0002] Nanoscale structure materials are referred to as nanomaterials for short, and broadly refer to the general term for ultrafine particle materials with at least one dimension in the nanoscale range in three-dimensional space. Nanomaterials are widely used in various fields. Some nanomaterials have different particle sizes with different properties. If some nanomaterials have uniform particle sizes, they can improve the performance of products during use. Therefore, in some cases, it is necessary to The particle size of nanomaterials is sieved to obtain nanomaterials in a certain particle size range, but because the particle size of nanomaterials is very small, and most of them are prone to agglomeration, the particle size distribution of nanomaterials obtained by conventional sievi...

Claims

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Application Information

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IPC IPC(8): B07B7/01B07B11/02B07B11/06B07B11/08B07B11/00
CPCB07B7/01B07B11/00B07B11/02B07B11/06B07B11/08
Inventor 卢德文霍灿广李阳
Owner SHENZHEN HADESHENG PRECISION TECH
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