Expanded graphite powder is a loose and porous worm-like material made from natural flake graphite by special processing. It is also called flexible graphite powder or expanded natural graphite powder. When the expanded graphite powder is heated, its volume can expand to 300 times its original volume. It has unique physical and chemical properties. So it has a wide range of applications in many fields, is a multi-functional industrial material.
The expanded graphite powder products have various forms, and the common ones are powder or formed blocks after processing. According to your actual application scenario and process requirements, we further process it. Such as make it into a specific shape of the heat transfer module or filling material. To meet different size and functional requirements.
Advantages of expanded graphite powder
Expanded graphite powder has many excellent properties.
It is resistant to corrosive substances such as strong acid and alkali.
Good high temperature resistance
It can maintain stable structure in high temperature environment. Its porous structure gives it a strong adsorption capacity, can adsorb a variety of substances.
Good flexibility and compressive resilience
You can deform and restore it to the original state under certain pressure. At the same time, its electrical conductivity is also relatively excellent. And it has certain application potential in the field of electricity conduction.
If you want to deeply understand the thermal conductivity, adsorption characteristics and other technical parameters and application details of expanded graphite powder, we will provide you with detailed technical guidance and rich application case reference.
Specifications of expanded graphite powder
| Performance classification | P erformance parameters | S pecific data |
| Physical properties | Packing density | 0.002-0.015 g/cm 3 |
| True density | 2-2.25 g/cm 3 | |
| Particle size – Fine powder | ||
| Particle size – Medium powder | 100-500μm | |
| Particle size – Coarse powder | >500μm | |
| Expansion factor | 100-300 times | |
| Chemical properties | Carbon content | More than 90%-99% |
| Ash content | About 1% to 10% | |
| Electrical conductivity | 10 2 -10 4 S/m | |
| Thermal properties | Thermal conductivity | 0.1-0.5 W/(m.k) |
Uses of expanded graphite powder
In the field of environmental protection
You can use it as an adsorbent to treat heavy metal ions and organic pollutants in industrial wastewater and waste gas. And it can effectively purify the environment with its high adsorption performance.
In the field of fire prevention
You can add it to fire retardant coatings and fire retardant plates. And use its high temperature resistance and porous oxygen insulation characteristics to enhance the fire retardant performance of the material.
In the petrochemical industry
You can use it as a sealing material. Because of its good flexibility and corrosion resistance, it can effectively seal pipes, valves and other joints, to prevent media leakage.
In the electronics industry
You can apply its conductivity to the preparation of conductive rubber, conductive plastics and other materials. It can improve the conductive properties of materials.
You can use it as an additive to the negative electrode material of the battery to improve the charge and discharge performance and cycle life of the battery . And it will help to improve the efficiency of energy storage and conversion.
Moreover, you can also choose expanded graphite powder products obtained by different preparation processes according to the specific use environment and performance expectations. Such as expanded graphite powder after high temperature expansion treatment, surface modification, composite with other materials. Or other expanded graphite powder derivatives with special properties. To give full play to its unique advantages in heat dissipation, adsorption, sealing, flame retardant and other fields. Provide customized material solutions for your projects or products.
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