GS-3570 Expandable Graphite

SKU: AS001236
Grade: ASB-3570
$52.24
$52.24

Size 1 lb Can

Units: Each
Availability: Usually ships in 14 business days
Inquire for other sizes and custom machining
GS-3570 Expandable Graphite or Graphite Intercalation Compound (GIC) is a specially synthesized intercalation compound of graphite. Expandable Graphite is made by taking advantage of the flaky, layered structure of graphite through the introduction of small molecules of sulfuric acid between layers. When heated these intercalants vaporize creating pressure and separating the layers of graphite. Depending upon the grade of material, expansion can commence at temperatures as low as 180°C and can occur suddenly and rapidly.

Many notable qualities make Expandable Graphite uniquely useful. Expandable Graphite’s performance doesn’t degrade with time or environmental exposure. Expandable Graphite also exhibits a controlled surface pH of 5-10 and meets many flame stop-performance targets at low loading levels. The product is a non-toxic, non-halogenated fire-stop additive, and also reduces smoke evolution. 

Expandable Graphite is an important component in a number of varied applications such as: batteries, coatings, plastic foils, rubber products, heating and cooling systems, energy storage systems, sealing systems, and also in fire retardant applications. In fire retardant applications the separation of layers creates a char barrier between the flame and the substrate. This intumescent layer on the surface of the graphite flake slows the spread of fire and minimizes the creation of toxic fumes and gases. Expandable Graphite can reach a volume that’s several hundred times greater than the initial volume.

GS-3570 has a nominal particle size of >180 micron with typical analysis showing expansion ratio 290:1 cc/g, 0.89 % moisture, 3.02 % sulfur, 95.35 % Expanded Carbon and a PH value of 6.94.

Recommended Use: batteries, coatings, plastic foils, rubber products, heating and cooling systems, energy storage systems, sealing systems,fire retardant applications