In the field of advanced materials preparation, carbon nanotubes are prized for their outstanding electrical conductivity, mechanical strength and thermal stability. Yet in practical application, their core challenge—difficulty of dispersion and a tendency to agglomerate—severely constrains performance and process efficiency. Agglomerated carbon nanotubes not only fail to embed evenly in the matrix material, leading to a discontinuous conductive network and a discounted mechanical reinforcement effect, but also settle during storage and use, affecting product consistency.
Chemi Tech confronts this market pain point head-on and has developed a series of high-efficiency dispersants dedicated to carbon nanotubes. Our solution is based on in-depth research into the surface characteristics and interfacial interactions of carbon nanotubes; through precise molecular design, the dispersant effectively adsorbs onto the nanotube surface, lowers its surface energy and weakens the van der Waals forces between tubes, thereby preventing agglomeration and promoting even distribution and long-term stable suspension in various solvents or resins.
Our application steps are clear and straightforward. The first step is to select a matching Chemi Tech dispersant grade based on your matrix system (such as epoxy resin, an aqueous system or a specific solvent). The second step is to add the dispersant at the recommended ratio during the early dispersion stage (such as ball milling or ultrasonic treatment). The third step is to carry out sufficient mechanical and chemical synergistic dispersion. The fourth step is to evaluate the dispersion effect (such as particle size analysis and settling tests) and optimize the process. This workflow markedly simplifies operation and raises the success rate.
In an electronic packaging material development project, the carbon nanotube conductive paste prepared by the customer's original process suffered from severe settling and uneven resistance. After adopting the Chemi Tech CNT-202 series dispersant and going through the above steps, a highly stable suspension was obtained. The final composite material showed a uniform electrical conductivity improved by about 40%, and the paste showed no visible settling after three months of storage, greatly improving product reliability and production efficiency.
Choosing Chemi Tech is not just choosing a dispersant but choosing a technical support system covering problem diagnosis, solution matching and process optimization. We are committed to helping you unlock the full potential of carbon nanotubes and driving your materials innovation projects to success.