808121

Expandable Graphite

flakes

• 동의어(들): Graphite intercalation compound, Intumescent flake graphite
• Linear Formula: C₂₄(HSO₄)(H₂SO₄)₂
• UNSPSC 코드: 12352200
• NACRES: NA.23

속성

• 설명: Expansion Ratio (X:1): 270 to 325
• Quality Level: 100
• 양식: flakes
• 입자 크기: +50 mesh (>300μ, ≥75% minimum)
• pH: 5-10
• solubility: water: insoluble

설명

일반 설명

Expandable graphite is a synthesized intercalation compound of graphite that expands or exfoliates when heated. This material is manufactured by treating flake graphite with various intercalation reagents that migrate between the graphene layers in a graphite crystal and remain as stable species.
If exposed to a rapid increase in temperature, these intercalation compounds decompose into gaseous products, which results in high inter-graphene layer pressure. This pressure develops enough force to push apart graphite basal planes in the “c” axis direction. The result is an increase in the volume of the graphite of up to 300 times, a lowering of bulk density, and approximately a 10-fold increase in surface area.

애플리케이션

• Graphene precursor.
• Inorganic source of carbon.
• Filler.
• Thermal additive.
• Fire retardant additive.
• Casting powders.
• Plastic additive.
• Rubber additive.
• EMF absorber.
• Milling and sieving.
• Bulk loading, unloading.
• Base material for gaskets and seals.
• Coatings.

안전성 정보

• 픽토그램: GHS08
• 신호어: Warning
• 유해 및 위험 성명서: H373
• 예방조치 성명서: P260 - P314 - P501
• Hazard Classifications: STOT RE 2 Inhalation
• 표적 기관: Lungs
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable