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SWCNT Slurry Preparation

Overview

Carbon nanotubes can be classified into single-walled carbon nanotubes and multi-walled carbon nanotubes based on the difference in carbon layers. In commercial applications, single-walled carbon nanotubes have superior performance, featuring true nanoscale tube diameters, better electrical conductivity, flexibility and high elasticity.However, achieving a stable and uniform dispersion of SWCNTs at the nanoscale poses a significant challenge in industrial production. Boyee's SWCNT Slurry Preparation Line addresses this challenge at its core by utilizing advanced Bead Grinding Machine technology. The high-precision mechanical shear force generated by the Bead Grinding Machine is particularly effective in breaking down the strong intermolecular forces and agglomerations of SWCNTs, enabling their superior performance to be fully realized in conductive slurries.

Characteristic

Highly efficient crushing of agglomeration

Continuous processing capacity, improve dispersion efficiency and continuity

Homogeneous cycling dispersion

Precise regulation of cycle parameters

Low impurity content

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Difficult to completely break the reunion

Due to the strong intermolecular interactions, single-walled carbon nanotubes are prone to form stable agglomeration at the micrometer level. Traditional dispersion processes (such as conventional stirring and ultrasonic treatment) are difficult to disperse them into single or a few nanoscale states.

Evenly dispersed, with no large particles distributed

After dispersion treatment, single-walled carbon nanotubes are prone to re-aggregation due to inter-particle attraction during storage or processing (such as heating and shearing), resulting in an increase in slurry particle size and performance degradation.

Low impurity content

During the dispersion process, the loss rate of single-walled carbon nanotubes is relatively high, mainly due to factors such as residue, filtration loss, and excessive shear fracture, resulting in raw material waste.

SWCNT Slurry Preparation

Difficult to completely break the reunion

Highly efficient crushing of agglomeration

By taking advantage of the micron-scale gap between the high-speed rotating rotor and the fixed stator, a hybrid force field of strong shear, friction and high-frequency vibration is generated to initially break down micron-scale agglomeration and dissociate them into sub-micron-scale.

Dispersion efficiency and continuity

With continuous processing capabilities, it can efficiently and stably disperse large amounts of materials. The production efficiency is much higher than that of intermittent stirring ultrasonic.

Evenly dispersed, with no large particles distributed

Homogeneous cycling dispersion

After pretreatment, the material enters the homogenisation system, where the microchannel shear and cavitation effects of the high-pressure homogeniser further break down intermolecular forces.

Precise regulation of cycle parameters

The accompanying circulation tank achieve 3 to 5 cycles of treatment, precisely controlling the flow rate and temperature, and gradually dispersing the agglomeration into a single or low agglomerate state.

Low impurity content

By improving the inner walls of the equipment, upgrading the filtration process, and precisely controlling the dispersion process, Boyee has reduced residues, filtration losses, and excessive shear fractures, thereby enhancing the utilization rate of single-walled carbon nanotube raw materials.