Method for preparing nanometer carbon black powder

A technology of nano-carbon black and carbon black powder, which is applied in chemical instruments and methods, and other chemical processes to achieve uniform particle size, simple equipment, and high purity

Inactive Publication Date: 2004-12-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foreign countries need 840 tons per year, but so far, there is still no information report that any domestic and foreign manufacturers can industrially produce nanometer (particle size ≤ 100nm) carbon black powder

Method used

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  • Method for preparing nanometer carbon black powder

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: should finish according to following steps when preparing 1kg nanometer carbon black powder.

[0025] 1. Weigh 1.05kg of micron carbon black powder, add 4.2kg of industrial alcohol according to micron carbon black: industrial alcohol = 1: 4 (mass ratio), and use an automatic mechanical mixer in the container to stir for 20 minutes to prepare The micron carbon black-alcohol colloid solution is poured into the solution tank of the high-speed shearing machine pulverizer.

[0026] 2. Start the solution circulation pump of the high-speed shear pulverizer, send the micron carbon black-alcohol mixture into the pulverization cavity of the high-speed shear pulverizer, and start the shear pulverizer at the same time, adjust the speed to reach (10000 rpm) After shearing for 60 minutes, the micron-sized carbon black particles in the mixed solution were all pulverized into nano-sized (median particle diameter≤10nm) carbon black particles, and the obtained nano-carbon b...

Embodiment 2

[0031] Embodiment 2: When preparing 10kg nano-carbon black powder, it should be completed according to the steps in the example.

[0032] 1. Weigh 10.5kg of micron carbon black powder, add 63kg of industrial alcohol according to micron carbon black: industrial alcohol = 1:6 (mass ratio), and use an automatic mechanical mixer in the container. After stirring for 50 minutes, pour the mixed solution into In the solution tank of the high-speed shearing machine pulverizer.

[0033] 2. Start the solution circulation pump of the high-speed shear pulverizer, send the micron carbon black-alcohol mixture into the pulverization chamber of the high-speed shear pulverizer, and start the shear pulverizer at the same time, adjust the speed to reach (20000 rpm) , After shearing for 30 minutes, the micron-sized carbon black particles in the mixed solution are all crushed into nano-sized (median particle diameter≤10nm) carbon black particles, and nano-sized carbon black-alcohol colloidal soluti...

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Abstract

A process for preparing carbon black nanoparticles from its micro-class particles includes such steps as high-speed (1000-20000 rpm) shearing under the protection of industrial alcohol, centrifugal separating of alcohol, and baking while vacuum vibrating. Its particle diameter is less than or equal to 10 nm.

Description

technical field [0001] The invention belongs to the technical field of non-metallic powder preparation, and in particular provides a method for preparing nanoscale ultrafine carbon black powder, which is suitable for industrial production of nanoscale carbon black powder. Background technique [0002] In recent years, with the rapid development of high technology, the scope of application of nano-carbon black powder has become more and more extensive. First of all, because carbon black has a high specific surface value (30-300m 2 / g), so it has a strong adsorption capacity. At present, as a strong adsorbent, it has been used in various industrial processes to remove organic compounds and pollutants in the liquid phase (or liquid flow), gas phase (gas flow). Among them, it is widely used in liquid phase adsorbents. For example, in water treatment, food processing and pharmaceutical industries, it is necessary to purify (adsorb-remove) a large number of various liquids (liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20C01B31/02
Inventor 张丽英吴成义郭志猛林涛徐金龙
Owner UNIV OF SCI & TECH BEIJING
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