Surface Enhanced Flake Graphite (SEFG) is a natural-based graphite that has been exfoliated, calendered, and precisely sized to deliver significantly thinner platelet morphology than conventional flake graphite. The result is a high-surface-area graphite material engineered for superior lubrication, conductivity, molding performance, and composite reinforcement.
SEFG is produced from high-quality natural flake graphite that undergoes controlled exfoliation and calendering to modify its microstructure. This process creates particles that retain intrinsic flake morphology, but are substantially thinner than conventional milled flake graphite.
Unlike traditional flake graphite powders, SEFG exhibits dramatically enhanced surface area while maintaining graphitic crystallinity and layered structure. Finely milled SEFG grades are manufactured to tightly controlled particle size specifications, ensuring consistency and repeatable performance in advanced industrial formulations.
For example, if you compare two graphite powders that have the same average particle size (10 microns), a standard flake graphite might have about 8 square meters of surface area per gram. A Surface Enhanced Flake Graphite (SEFG) of the same size can have close to 20 square meters of surface area per gram, roughly twice as much usable surface area packed into the same amount of material.
Eigenschaften
Surface Enhanced Flake Graphite combines thin platelet morphology with the intrinsic properties of crystalline graphite.
Anwendungen
SEFG is engineered for applications requiring enhanced surface interaction, conductivity, lubrication, and structural reinforcement.
Improves electrical conductivity and dispersion within polymer matrices.
Provides lubricity and controlled friction performance in sealing systems.
Supports stable friction behavior in braking and wear applications.
Delivers exceptional oil absorption and sustained lubrication performance. Enhances surface coverage, conductivity, and film performance.
Offers superior insulation against oxygen exposure and improved heat retention in molten metal applications and casting as a High-Purity Metal Cover Carbon.
Funktionsweise
The exfoliation and calendering process produces SEFG particles with significantly reduced thickness compared to conventional flake graphite. This thin morphology increases exposed surface area without compromising structural integrity.
The increased surface area enhances:
SEFG’s high surface area and low bulk density result in extremely efficient oil absorption properties. This makes SEFG particularly suitable for grease formulations and lubrication systems where oil retention and dispersion stability are critical.
Despite its enhanced surface area, SEFG maintains the intrinsic layered structure of graphite, enabling classic barrier-layer lubrication performance.
SEFG exhibits excellent cohesive integrity, allowing for effective molding and forming in composite and pressed systems. Its structure enables strong particle-to-particle interaction without requiring excessive binder content.
SEFG maintains the inherent stability of natural graphite:
WARUM ASBURY
Asbury Advanced Materials offers high-quality Surface Enhanced Flake Graphite grades engineered for conductive plastics, lubrication systems, cover carbon applications, coatings, friction systems, and nano-platelet precursor materials. Technical expertise is available to optimize formulation performance and ensure efficient supply chain integration.
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