Preparation of Flexible Graphite Sheet with Fine Flake Graphite

Qi Lai

doi:10.4028/www.scientific.net/AMR.328-330.1642

Paper Titles

Research on Inner Cooling Apparatus Sets in the Mold of 700mm×700mm Bloom
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Study on the Graphite-Based Cementitious Material for the Soil Moisture Detective Probe
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Preparation and Applications of Compatibilizer in HPVC/EPDM
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Comparative Study on Thermal, Compressive, and Wear Properties of Palm Slag Brake Pad Composite with other Fillers
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Preparation of Flexible Graphite Sheet with Fine Flake Graphite
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The Bending of Symmetrical Laminated Composite Plate Based on Symplectic Method
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Effects of La on the Microstructures and Mechanical Properties of AZ91 Magnesium Alloy and its Mechanism
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Studies on Mechanical Properties and Wear Behaviour of In Situ Al-TiC Composites
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Research on the Development of Large Application Specific Integrated Circuit Based on SOPC
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 328-330Preparation of Flexible Graphite Sheet with Fine...

Preparation of Flexible Graphite Sheet with Fine Flake Graphite

Abstract:

Flexible graphite was prepared using the fine flake graphite that could go straight through 149-85μm mesh as raw material, using sulfate acid and nitrate acid as inserting agent and Potassium permanganate as oxidant. The best oxidation reaction conditions are as follows: V_{Sulfate acid}/V_{Nitrate acid}=5:1, m (fine graphite)/m (Potassium permanganate)=1/0.12, the limited temperature is about 1100-1200°C. Under such condition, the expansion volume of the fine flake graphite with 250-149μm can be reached to 341ml/g. The graphite with 149-85μm can be reached to 230ml/g, the qualities of flexible graphite sheet when intensity is 1.20 g/cm³ are as follows: tensile strength is 4.09 Mpa; ash ratio is 2.19%; recovery rate is 7.8%; compression ratio is 44.0%, TG at 450°C is 0.32%; TG at 600°C is 18.97%; Stress relaxation rate is 3.1%.