PRODUCT SPECIFICATIONS AND DETAILS
Product Overview
Expandable Graphite is a specially processed graphite material, typically produced from natural flake graphite through intercalation treatment. When exposed to elevated temperatures, the material rapidly expands along the c-axis of the graphite crystal structure, forming a voluminous, worm-like carbon structure. This expansion behavior makes expandable graphite a highly functional material for flame-retardant, sealing, thermal management, and industrial processing applications.
Compared with ordinary graphite powder, Expandable Graphite offers a unique intumescent effect under heat, allowing it to form an insulating and protective char layer. This property makes it especially suitable for halogen-free flame-retardant systems, fire protection materials, graphite foil production, sealing materials, specialty coatings, conductive compounds, and selected advanced composite systems. At QDZRT Graphene, different product grades can be supplied according to particle size, expansion volume, treatment level, sulfur content, and end-use requirements.
Key Features
- Expands rapidly when exposed to high temperature
- Forms an insulating char barrier for flame-retardant applications
- Widely used in halogen-free fire protection systems
- Suitable for graphite foil, sealing, coating, and composite applications
- Available in different particle sizes and expansion grades
- Good compatibility with polymers, coatings, and industrial formulations
- Can be supplied for sample testing, pilot trials, and bulk industrial use
- Custom specifications available according to application requirements
Technical Parameters
| Product Name | Expandable Graphite |
| Appearance | Black to Dark Gray Flake or Granular Material |
| Form | Expandable Flake Graphite |
| Raw Material Source | Typically Natural Flake Graphite |
| Expansion Behavior | Expands When Heated |
| Expansion Ratio / Expansion Volume | Customizable According to Product Grade |
| Particle Size | Customizable |
| Sulfur Content | Depending on Product Grade |
| Moisture | Depending on Product Grade |
| Ash Content | Depending on Product Grade |
| Application Grade | Flame-Retardant Grade / Sealing Grade / Industrial Grade / Customized Grade |
| Process Compatibility | Suitable for Different Industrial Formulation Systems |
| Packaging | Standard Packaging or Customized Packaging |
| Storage | Store Sealed in a Cool, Dry Place |
| MOQ | Negotiable |
Main Applications
Halogen-Free Flame Retardants
Expandable Graphite is widely used in halogen-free flame-retardant systems. Under heat or flame exposure, it expands and forms a protective char layer that helps reduce heat transfer, suppress flame spread, and improve fire resistance in polymers, foams, coatings, and construction-related materials.
Sealing Materials and Graphite Foil Production
Expandable Graphite is an important precursor for the production of expanded graphite and flexible graphite foil. These materials are widely used in gaskets, seals, and packing products requiring temperature resistance, chemical stability, and long-term sealing performance.
Coatings and Fire Protection Materials
In specialty coatings and fire protection systems, expandable graphite can function as an intumescent component that enhances thermal shielding and supports the development of fire-resistant surface materials.
Plastic, Rubber, and Composite Systems
Expandable Graphite can be incorporated into polymers, elastomers, and composite materials where flame retardancy, thermal functionality, or multifunctional filler performance is required. It is suitable for both formulation development and industrial production.
Thermal Management and Functional Carbon Systems
Expanded graphite derived from expandable graphite can also be used in selected thermal management, heat dissipation, and specialty carbon material systems, including graphite boards, foils, and related industrial components.
Other Industrial Applications
Depending on product grade and process design, expandable graphite may also be used in foundry additives, specialty fillers, and selected advanced material applications requiring expansion behavior and carbon-based functionality.
Product Advantages
- Unique expansion capability under heat exposure
- Effective intumescent performance for flame-retardant formulations
- Supports halogen-free fire protection system design
- Important raw material for flexible graphite and sealing products
- Flexible grading by particle size and expansion performance
- Suitable for both industrial production and product development
Recommended Industries
- Flame-retardant materials industry
- Sealing materials industry
- Graphite foil and flexible graphite industry
- Fire protection coatings industry
- Plastic and rubber compound industry
- Advanced composite materials industry
- Thermal management materials industry
Packaging & Storage
This product is available in standard packaging and customized packaging options, including sample supply, small-batch packaging, and bulk industrial packaging. It should be stored in a sealed, cool, dry, and well-ventilated environment, protected from moisture and contamination. Proper storage helps maintain product consistency and expansion performance during practical use.
Customization Service
We can provide suitable Expandable Graphite specifications according to different application requirements, including particle size range, expansion volume, treatment level, sulfur content, packaging method, and supply volume. Sample support, pilot testing, and bulk order services are available for industrial users, manufacturers, and formulation development customers.
