Main application areas of expandable graphite

The application of expandable graphite in the fireproofing and flame retardant industry is extensive due to its unique physical and chemical properties. Below are the main areas where it is applied:
1. Fire-Resistant Coatings
Expandable graphite is widely used in fire-resistant coatings. When exposed to high temperatures, it rapidly expands and forms a dense carbonaceous insulating layer.
This insulating layer effectively isolates oxygen, prevents the spread of flames, and protects the substrate from high-temperature damage.
2. Flame-Retardant Sealing Materials
In building structures such as fire doors and fire windows, expandable graphite is commonly used to manufacture flame-retardant sealing strips.
Under high-temperature conditions, it expands and fills gaps, preventing the passage of smoke and flames.
3. Fireproof Sealing Materials
Expandable graphite can be used for fireproof sealing in locations such as cable trays and wall-penetrating pipes.
It expands when heated and tightly fills holes, providing fireproofing and smoke-blocking effects.
4. Flame-Retardant Plastics and Composite Materials
Expandable graphite can be used as an additive to modify plastics, rubber, and other composite materials.
It significantly improves the flame-retardant performance of materials while reducing toxic gases produced during combustion.
5. Fireproof Packaging Materials
In logistics transportation, expandable graphite is used to manufacture fireproof packaging materials.
It quickly expands during a fire, forming a protective layer that prevents internal items from being damaged.
6. Firefighting Equipment
Expandable graphite can also be used in some firefighting agents, especially for extinguishing oil fires.
It can rapidly cover the surface of the fire source, isolating oxygen and achieving a fire-extinguishing effect.
Summary
Expandable graphite holds an irreplaceable position in the fireproofing and flame-retardant field due to its excellent expansion and heat resistance. Whether in fire-resistant coatings, sealing materials, or flame-retardant plastics, it effectively enhances the fireproofing performance of products, ensuring the safety of lives and property.
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