Graphene-modified depolymerizer, powder disperser, ultrafine disperser

Release time:

2025-04-03 09:57

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Graphene, a unique two-dimensional carbon nanomaterial, exhibits immense application potential in numerous fields such as energy storage, sensor technology, and composite materials due to its exceptional electrical, thermal, and mechanical properties. However, its tendency to agglomerate severely restricts the full utilization of its superior performance. Therefore, surface modification of graphene is crucial, as it not only improves its dispersibility in solvents or matrix resins but also introduces specific functional groups to impart new functionalities, thereby expanding its application range.

Currently, surface modification methods for graphene mainly include chemical modification (covalent bond modification), physical modification (non-covalent bond modification), and element doping modification. Compared with chemical modification, physical modification has significant advantages. It causes less damage to the conjugated layer structure of graphene, has a relatively minor impact on its physicochemical properties, and is simple and easy to operate. Among physical modification methods, element doping modification can alter the fundamental properties of semiconductors, imparting graphene with special optical, electrical, and magnetic properties; the surfactant dispersion method utilizes the amphiphilic properties of surfactant molecules, where their hydrophilic polar groups and lipophilic nonpolar groups adsorb onto the nanoscale graphene surface, forming different micelle morphologies, thereby effectively preventing graphene agglomeration.

In large-scale industrial production, vertical equipment is often used. The "honeycomb mill" is used for processing. The honeycomb mill is a modification machine with strong continuity, high coating efficiency, high activation index, and large processing capacity. It can not only depolymerize and disperse materials but also improve the dispersibility of powders and surface modifiers, resulting in more uniform coating on the particle surface. It uses less modifier per unit product and is particularly suitable for surface modification of powders. With high powder coating rate and activation index, and low energy consumption, it achieves high modification efficiency while reducing production costs. In addition, the material operates under negative pressure during equipment operation, ensuring good sealing, no dust leakage, essentially no pollution, a good operating environment, and low labor intensity.

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