Expandable Graphite CAS 7782-42-5

Main Applications

Expandable Graphite is widely used as a functional additive in applications requiring flame retardancy, thermal insulation or sealing performance. It is commonly applied in intumescent flame retardant systems, fire protection coatings, engineering plastics, rubber materials and industrial sealing components.

In polymer and plastic formulations, Expandable Graphite can act as a halogen-free flame retardant additive. Upon exposure to heat, it expands to form an insulating carbon layer that helps delay heat transfer and reduce flame spread. It may be used in polyurethane systems, polyolefins, elastomers and other engineered materials depending on formulation requirements.

In construction and coating applications, it is used in fire-resistant coatings, firestop materials, gaskets, sealing strips and insulation systems. Buyers typically evaluate expansion volume, particle size distribution, carbon content and sulfur level when selecting suitable grades.

Product Specifications

Packaging and Supply

Expandable Graphite is typically supplied in 25 kg bags or jumbo bags for industrial handling. Packaging options may vary depending on grade and export requirements. Bulk supply and customized specifications can be discussed based on application needs.

Storage and Handling

Store in a dry and well-ventilated area, away from moisture and strong oxidizing agents. Keep packaging tightly closed to maintain product stability. Handle with appropriate protective equipment to avoid dust inhalation during processing.

FAQ

1. What is the function of Expandable Graphite in flame retardant systems?

Expandable Graphite expands under heat to form a protective carbon layer that acts as a thermal barrier, helping reduce flame spread and heat transfer.

2. Is Expandable Graphite suitable for halogen-free formulations?

Yes, it is commonly used in halogen-free flame retardant systems where reduced smoke and environmentally conscious formulations are required.

3. What parameters should be considered when selecting a grade?

Key factors include expansion volume, particle size, carbon content, sulfur content and compatibility with the target formulation.

4. Can it be used in coatings?

Expandable Graphite is widely used in fire-resistant and intumescent coatings to improve thermal protection performance.

5. Is bulk supply available?

Yes, industrial supply with different packaging options is typically available. Buyers can inquire based on required specifications and application needs.