Ridgehart Premium Expandable Graphite – High Expansion Ratio (350) | Electrode-Grade & Fire-Retardant Applications

Ridgehart Expandable Graphite is a high-performance, inorganic carbon material engineered for applications requiring rapid thermal expansion, high temperature resistance, chemical durability, and superior mechanical flexibility. With a carbon content of 92–95%, an expansion multiple of ≥350, and controlled particle distribution, this material is ideal for electrode materials, fire-retardant systems, oil-absorption products, conductive coatings, and environmental applications.

Composition & Purity:

• Carbon content: 92–95%
• Ash content: 5–7%
• Volatile matter: 20.4%
• Moisture content: 0.3–0.4%

Performance Characteristics:

• Expansion multiple: ≥350 (high-expansion grade)
• pH value: 4.2–4.6 (stable, slightly acidic)

Particle Distribution:

• +50 mesh: 74.5%
• –50 mesh: 25.5%

Material Form:

• Layered crystalline expandable graphite
• SEM-confirmed flake structure (per technical report)
• High elasticity, mechanical strength, and chemical durability

Material Characteristics:

• High Expansion Performance: Engineered for rapid and uniform expansion under heat, producing a worm-like expanded graphite structure ideal for fire-retardant and sealing applications.
• Excellent Chemical Resistance: Resistant to acids, alkalis, oils, and typical industrial reactants — enabling long-term stability in aggressive chemical environments.
• Superior Thermal Stability: Maintains structural integrity and performance under high-temperature exposure, suitable for refractory and thermal-insulation systems.
• Strong Mechanical Properties: Provides tensile strength, compressive resistance, bending elasticity, and radiation resistance — enabling its use in industrial, environmental, and engineering applications.
• Electrically Conductive: Expandable graphite’s layered carbon structure offers stable conductivity, suitable for conductive coatings, antistatic agents, and electrode materials.

Key Advantages:

• High expansion volume for superior flame-retardant efficiency
• Strong acid/alkali resistance and thermal endurance
• Excellent electrical conductivity and structural resilience
• Suitable for energy storage, coatings, plastics, and environmental systems
• Controlled mesh distribution for consistent processing behaviour

Storage Conditions:

Store sealed, in a cool, dry, dark environment protected from light. Shelf life: 12 months (unopened) under proper storage conditions. Avoid exposure to moisture and direct sunlight.

Application Uses:

• Electrode Materials: Used in advanced electrode formulations for batteries, capacitors, and electrochemical devices due to conductivity and stability.
• Fire-Retardant Additives: Excellent for flame-retardant plastics, rubbers, foams, and coatings; expands under heat to form a protective carbon layer.
• Oil-Absorption & Spill Control: Effective in oil-absorption materials thanks to its porous expanded structure.
• Chemical & Petrochemical Industry: Applicable in catalytic systems, corrosion-resistant materials, and process additives.
• Environmental Protection: Useful in pollution control, filtration, and sorbent materials.
• Medical & Industrial Textiles: Used in medical dressings and specialised industrial fabrics for antimicrobial, absorbent, and protective performance.
• Military Applications: Suitable for smoke agents and heat-activated dispersants.