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The article reported a new way to prepare sulfur-free and lower exfoliate-temperature expandable graphite with ultrasound irradiation. Flake graphite mixture was used as raw material, sulfur-free inorganic and organic solvents were used as ultrasonic solvents. After ultrasound irradiation and wash, the expandable graphite was expanded at 350 °C to obtain sulfur-free expanded graphite. The process...
This article reports a new way to prepare expandable graphite with ultrasound irradiation. Flake graphite mixture and ultrasonic solvent were placed into a flask in the ultrasonic cleaning bath (nominal power of 500 W and 250 W) at room temperature. Ultrasonic time kept 60 min. After ultrasound irradiation, the expandable graphite was expanded at 900 °C to obtain the expanded graphite. The process...
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