CNT Dispersion Apparatus with Spiral Guide and Ultrasonic Vibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for dispersing carbon nanotubes in solutions often damage the nanotubes, fail to achieve even dispersion, require additional chemical processes, and are costly and time-consuming.
Innovation Solution
An apparatus comprising a solution receiving part with a spiral guide portion and an ultrasonic vibrator part, which together create a laminar flow and apply ultrasonic waves to disperse carbon nanotubes without damaging them, while a conical dispersion part helps loosen any remaining lumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If ultrasonic waves are applied to disperse carbon nanotubes, then dispersion is achieved, but the stability of the solution is degraded
Solution Approach 1:
The flow pipe portion is divided into multiple sections with spiral guide portions at different positions, creating segmented ultrasonic treatment zones. This segmentation allows the carbon nanotube solution to receive distributed ultrasonic energy rather than concentrated exposure, maintaining dispersion effectiveness while preventing excessive energy input that would degrade solution stability.
Solution Approach 2:
The spiral guide portions create dynamic laminar flow patterns that continuously change the orientation and position of carbon nanotube bundles as they pass through the ultrasonic field. This dynamic movement ensures uniform dispersion while controlling the total ultrasonic exposure time, preventing solution stability degradation.
2Productivity
If bead mills or high shear dispersers are used to disperse carbon nanotubes, then dispersion is achieved, but the length of the carbon nanotube is reduced due to cutting
Solution Approach 1:
The invention replaces mechanical cutting systems (bead mills, high shear dispersers) with an ultrasonic vibration system. The ultrasonic waves create cavitation and vibration that separate carbon nanotube bundles without the mechanical contact and shear forces that cause cutting, thus maintaining nanotube length while achieving effective dispersion.
Solution Approach 2:
The ultrasonic vibrator part generates high-frequency mechanical vibrations that penetrate the carbon nanotube solution, causing the bundles to separate through vibrational energy rather than mechanical cutting. This vibration-based dispersion mechanism preserves the integrity and length of individual carbon nanotubes.
3Productivity
If chemical dispersion methods using surfactants are used, then carbon nanotubes can be dispersed, but additional processes for attaching and removing chemical substances are required
Solution Approach 1:
The invention extracts and eliminates the need for chemical dispersants from the dispersion process. By using pure physical ultrasonic vibration, the method achieves effective dispersion without requiring surfactants or other chemical substances, thereby removing the additional steps of attaching and removing chemicals and simplifying the overall process.
Solution Approach 2:
The ultrasonic vibration system enables the carbon nanotube solution to disperse itself without external chemical assistance. The energy from the ultrasonic waves directly acts on the carbon nanotube bundles, causing them to separate and distribute uniformly in the solution without requiring chemical mediators.
4Productivity
If conventional dispersion methods are used, then some dispersion is achieved, but the dispersion is not even and requires additional time
Solution Approach 1:
The flow pipe portion serves multiple functions: it guides the solution flow, creates laminar flow patterns through spiral guides, distributes ultrasonic energy through multiple vibration portions, and ensures uniform exposure of all carbon nanotube bundles to dispersion energy. This multi-functionality achieves both rapid dispersion and uniform distribution simultaneously.
Solution Approach 2:
The spiral guide portions create preliminary laminar flow patterns that align and position carbon nanotube bundles in a controlled manner before they reach each ultrasonic vibration portion. This preliminary organization ensures that all bundles receive consistent ultrasonic treatment, resulting in even dispersion without requiring additional processing time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively disperses carbon nanotubes without damaging them, achieving even distribution and reducing manufacturing costs and time, thereby improving the performance of lithium-ion batteries.
Implementation Method 1
an ultrasonic vibrator part mounted on an outer wall of the solution receiving body portion and configured to provide ultrasonic waves to the CNT solution
Implementation Method 2
a CNT solution can be formed as a laminar flow while spirally flowing by a spiral guide portion of a solution receiving part
Data Source
AI summary
A apparatus for dispersing carbon nanotubes according to the present invention includes: a solution receiving part including a solution receiving body portion, a flow pipe portion formed by passing through an inside of the solution receiving body portion, and through which a CNT solution flows, and a spiral guide portion formed on an inner wall of the flow pipe portion and configured to guide the CNT solution to spirally flow; and an ultrasonic vibrator part mounted on an outer wall of the solution receiving body portion, and configured to provide ultrasonic waves to the CNT solution, wherein the spiral guide portion has a right spiral type and a left spiral type alternately formed on the inner wall of the flow pipe portion so that a rotation direction is changed twice or more.