Graphene shows great potential in fields such as composite materials and electronic devices due to its outstanding properties. However, its huge specific surface area and strong van der Waals forces make its sheets extremely prone to agglomeration, a problem that severely restricts the realization of its performance and its practical application. How to disperse graphene stably and uniformly in different matrices has become a core challenge faced by many R&D and production teams.
The market pain points are clear: simple mechanical stirring or ultrasonic treatment often has only short-lived effects, and graphene quickly re-agglomerates, resulting in non-uniform material properties; directly using conventional surfactants may introduce impurities or affect the electrical and mechanical properties of the final product. Users urgently need a dispersion solution that is professional, efficient, and does not affect graphene's intrinsic properties.
To meet this need, Chemi Tech, drawing on deep accumulation in the field of nanomaterial interface chemistry, has developed a series of dispersants dedicated to graphene. Our solution is based on precise molecular design; the dispersant molecules can effectively adsorb onto the graphene surface and, through steric hindrance or electrostatic repulsion, significantly reduce the tendency for re-agglomeration between sheets, thereby obtaining a dispersion system with high stability and high uniformity.
The specific implementation steps are clear and simple: first, according to your graphene type (such as graphene oxide, reduced graphene oxide, etc.) and target solvent system (water-based or oil-based), our technical team will help select the most suitable dispersant grade. Second, during dispersion, it is recommended to first premix the dispersant in the calculated proportion with the solvent, and then add the graphene powder. Subsequently, through efficient shear dispersion or ultrasonic treatment, the initial de-agglomeration and wetting of the graphene can be achieved. Finally, with appropriate continuous stirring or aging, a long-term stable graphene dispersion can be obtained. The entire process is easy to integrate into existing production processes.
We once cooperated with a customer focused on high-performance thermally conductive silicone grease. They wanted to incorporate graphene into a silicone oil matrix to improve thermal conductivity, but in early attempts the graphene dispersion was extremely poor, with large amounts of particles appearing and great fluctuations in product performance. After adopting the oil-system-specific dispersant recommended by Chemi Tech and operating according to the above steps, a uniform and stable graphene silicone oil paste was successfully prepared. The final product's thermal conductivity was significantly improved and batch stability was greatly enhanced, meeting the requirements of its high-end customers.
Choosing Chemi Tech is not only choosing a product but also obtaining a targeted solution and ongoing technical support. We are committed to helping you overcome the dispersion bottleneck, unlock the true value of graphene, and drive material innovation to a new level.