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Carbon black slurry utilizing absolute ethyl alcohol as dispersion medium and preparation method of carbon black slurry

A technology of absolute ethanol and dispersion medium, which is applied in the direction of mixing methods, chemical instruments and methods, dissolution, etc., can solve the problems of easy increase of slurry impurities, etc., and achieve the effects of avoiding adverse effects, simple process, and short processing time

Inactive Publication Date: 2014-05-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the purposes of the present invention is that the existing carbon black slurry is only limited to the water-based system and must add a dispersant or use chemical oxidation, grafting, etc. to modify the powder before it can be well dispersed, so that it is easy to increase the size of the slurry. Impurities and other problems, invent a carbon black slurry with absolute ethanol as the dispersion medium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Commercially available carbon black powder in bags without gas protection was selected to prepare a carbon black slurry with a mass fraction of 0.1%. First, put the commercially available ordinary bagged nano-scale carbon black powder without gas protection (the carbon black powder can also be replaced by high-purity carbon black powder with gas protection during specific implementation, the same below) into the set temperature Dry in a drying oven at 120°C for 5 hours; weigh 0.039g of dried carbon black powder and put it into a container, then measure 50ml of absolute ethanol, pour 50ml of absolute ethanol into the container and stir for 10 minutes After there is no obvious solid-liquid separation, put it in an ultrasonic equipment for ultrasonic dispersion. The ultrasonic time is 45 minutes. carbon black slurry.

Embodiment 2

[0031] Commercially available nano-carbon black powder without gas protection was selected to prepare a carbon black slurry with a mass fraction of 0.05%. Firstly, commercially available nano-carbon black powder in bags without gas protection was put into a drying oven and dried at 110° C. for 6 hours. Weigh 0.020g of dried carbon black powder and put it into a container, then measure 50ml of absolute ethanol, pour 50ml of absolute ethanol into the container and stir for at least 5 minutes so that the solution has no obvious solid-liquid layering, and then Put the uniformly stirred solution in an ultrasonic equipment for ultrasonic dispersion, the ultrasonic time is 30 minutes, and the temperature of the circulating cooling water during the ultrasonic dispersion process is 25°C, and the carbon black with a mass fraction of 0.05% of ethanol as a solvent can be obtained with stable dispersion slurry.

Embodiment 3

[0033] The commercially available nano-carbon black powder without gas protection was selected to prepare a nano-carbon black slurry with a mass fraction of 0.15%. Firstly, commercially available nano-scale carbon black powder in bags without gas protection was put into a drying oven at 130° C. for 4 hours to dry. Weigh 0.059g of dried carbon black powder and put it into a container, then measure 50ml of dehydrated ethanol, pour 50ml of dehydrated ethanol into the container and stir for 15 minutes to obtain a solution without obvious solid-liquid layering, then put The stirred solution is placed in an ultrasonic equipment for ultrasonic dispersion. The ultrasonic time is 60 minutes. During the ultrasonic dispersion process, the temperature of the circulating cooling water is 15°C, and a stable dispersion of carbon black slurry with a mass fraction of 0.15% and ethanol as a solvent can be obtained. material.

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Abstract

The invention discloses carbon black slurry utilizing absolute ethyl alcohol as a dispersion medium and a preparation method of the carbon black slurry. The carbon black slurry consists of carbon black powder accounting for 0.05wt% to 0.15wt% of the slurry and the balance of absolute ethyl alcohol. The preparation method is simple in technology, short in treatment time, easy in process control and very strong in engineering application value. The carbon black slurry disclosed by the invention is pure in component and good in dispersion stability, can be stably dispersed for more than three months without sedimentation, and has very good usability.

Description

technical field [0001] The invention relates to a nano slurry and a preparation method thereof, in particular to a carbon black slurry and a preparation method thereof, in particular to a carbon black slurry using absolute ethanol as a dispersion medium and a preparation method thereof. Background technique [0002] Carbon black is a carbon material with extremely special microstructure, particle shape and surface properties. It is a fine granular black powdery substance produced by cracking and incomplete combustion of hydrocarbon substances (oil or natural gas and other hydrocarbons). Its particle size is on the order of nanometers (generally around 20 nanometers). [0003] As an ideal black pigment, carbon black has excellent colorability, weather resistance and chemical stability. This excellent characteristic makes it widely used in plastics, rubber, paint, printing ink and other industries. Carbon black has excellent spectral absorption properties. In addition to bein...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/12
Inventor 王宏宇吴志奎梁正林王明娣黎向锋袁晓明沈清许晓静
Owner JIANGSU UNIV
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