Expandable Graphite Flakes

Expandable Graphite Flakes Specification

Material
Expandable Graphite

Application
Flame Retardant, Metallurgy, Foundry, Gaskets, Seals, Fireproof Materials, Batteries

Chemical Composition
High Carbon Natural Graphite, Sulfuric Acid, Oxidizing Agents

Shape
Flake

Hardness
1-2 (Mohs)

Density
2.2 Gram per cubic centimeter(g/cm3)

Expansion Ratio
150~350 ml/g (typical)

Packaging
25 kg bags / Jumbo bags

Loss on Ignition
5%

Sulfur Content
0.05%

pH Value
5-7

Particle Size
80-320 mesh (customizable)

Volatile Matter
1%

Storage Conditions
Store in dry, ventilated place away from ignition source

Color
Dark Gray to Black

Moisture Content
0.5%

Carbon Content
95%

Expandable Graphite Flakes About

Expandable graphite has a wide range of industrial applications due to its ability to expand under heat and retain the properties of natural graphite.

Here are its key applications:

Flame Retardants
Sealing and Gaskets Material
Energy Storage
Conductive Application
Environmental Application
Foundry Application
Anti Piping Compound

Superior Flame Retardant Properties

Expandable Graphite Flakes are widely recognized for their highly efficient flame retardant capabilities. Their exceptional expansion ratio creates an insulating barrier when exposed to heat, reducing flame spread and enhancing fire resistance in construction materials, electrical components, and coatings. The product's robust performance is attributed to its high carbon content and minimal impurities, making it suitable for demanding fire protection applications.

Customizable Particle Sizes for Diverse Applications

With an available particle size range of 80-320 mesh, these flakes can be tailored to meet the specific needs of various industries. Whether required for gaskets, seals, batteries, or foundry work, the adaptability of Expandable Graphite Flakes ensures optimal performance in each usage scenario. Custom sizing allows for precise integration into end products, maximizing their effectiveness.

Premium Quality and Safe Storage

The flakes are produced to stringent quality standards, with sulfur content kept below 0.05% and moisture under 0.5%. Packaged in 25 kg bags or jumbo bags, they are easy to handle and store. To maintain their integrity and prevent premature expansion, it's essential to store them in a dry, well-ventilated area, away from possible ignition sources.

FAQ's of Expandable Graphite Flakes:

Q: How are Expandable Graphite Flakes manufactured and what is their typical expansion process?

A: Expandable Graphite Flakes are produced by treating high carbon natural graphite with sulfuric acid and oxidizing agents. Upon exposure to high temperatures, the treated flakes expand rapidly, increasing their volume up to 150-350 ml/g. This expansion creates heat-resistant, insulating layers that are ideal for flame retardant materials and other industrial uses.

Q: What are the key benefits of using these graphite flakes in flame retardant applications?

A: When exposed to heat, the expandable graphite flakes form an insulating char layer, effectively slowing down fire propagation and reducing smoke generation. This makes them highly effective in fireproofing construction materials, electronics, and coatings, offering both enhanced safety and durability compared to traditional fire retardants.

Q: Where can these expandable graphite flakes be used?

A: These flakes are versatile and find applications in numerous industries, including flame retardant manufacturing, metallurgy, the foundry sector, gaskets, seals, fireproof materials, and batteries. Their customizable particle sizes allow for easy integration into products where thermal stability and fire resistance are crucial.

Q: What storage precautions should be taken with expandable graphite flakes?

A: To preserve their expansion capabilities and prevent accidental activation, store expandable graphite flakes in a dry, well-ventilated area, away from sources of heat, spark, or ignition. Proper storage ensures product quality and safety during handling and use.

Q: How is the particle size of these flakes tailored to specific industrial requirements?

A: Particle size can be customized between 80-320 mesh to suit various industrial needs. Finer flakes are often used in coatings and batteries, while coarser sizes are preferred in foundry and gasket applications. Customization ensures optimal performance for your intended use.

Q: What is the typical packaging and how should the product be handled during transportation?

A: Expandable Graphite Flakes are typically packed in 25 kg bags or jumbo bags for bulk orders. During transportation, it's important to keep the bags intact and avoid contact with sources of moisture or flame to maintain product quality and safety.

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