Expandable Graphite

YAAVIK MATERIALS AND ACS MATERIALS PRESENTS Expandable Graphite in India.

Product Detail

CAS No.: 7782-42-5

Expandable graphite from ACS is a specially synthesized intercalation compound of graphite. Graphite’s flaky, layered structure makes it possible to introduce outside atoms or small molecules between the graphite layers. This process is called intercalation and the result is an expandable graphite salt or a graphite intercalation compound (GIC.) The material gets its name because, when exposed to heat, the intercalated graphite layers expand and separate like an accordion. The final expanded volume can be hundreds of times greater than the initial volume of the material. The intercalation agent and the proportion of intercalated layers determine the temperature at which expansion begins and the rate at which expansion occurs.

Expansion of the flake graphite decreases the material’s overall bulk density while increasing its surface area; this change yields a material that demonstrates increased chemical reactivity over the original material. Expandable graphite is valued as a flame retardant. Expansion creates an intumescent layer on the surface of the graphite flake that slows the spread of fire and minimizes the creation of toxic fumes and gases.

Expandable graphite is also a component in a number of additional applications, including:

Batteries
Coatings
Plastic foils
Rubber products
Heating and cooling systems
Energy storage systems
Sealing systems
And many others

Product No.	Expansion Start Temperature (EST‚ °C)	pH	Mesh	Packing Density (mg/cm3)	Expansion Volume (EV‚ ml/g)	Property
EG-175-350	175	7.0	50	0.5	350	Highest Expansion Volume
*EG-170-400	170	7.0	80	0.5	400	Highest Expansion Volume
EG-180-250	180	7.0	80	0.5	250
EG-250-180	250	7.0	80	0.5	180
EG-300-170	300	7.0	80	0.5	170	Highest Expansion Start Temperature

*This product has been discontinued.

New Products List

SKU	Mesh	Purity (%)	Expansion Start Temperature (℃)	Expansion Volume (ml/g)	Properties/Highlights	Package Size
CXG5C022	50	≥98	175	≥350	High purity, very high free expansion and expansion strength	200g
CXG5B022	50	≥99	180	≥250	High purity, soft ash, for application require least instruments damage	200g
CXG5B122	50	≥95	180	≥250	Standard product for all main applications	200g
CXG8B122	80	≥95	180	≥230	For main application in EPS, XPS foam, sealing strip and PU foam	200g
CXGAA222	150	≥92	175	≥150	Mainly used in fabric coatings, fire-resistant coatings, fire-resistant adhesives and EPS and XPS flame retardants	200g
CXG52322	50	≥90	180	≥200	Stronger char	200g
CXG22022	-200	≥94	180	≥20	Finest particle size, min 80% below 75mircon for coatings, impregnation	200g
CXG21122	-100	≥95	180	≥35	Fine particle size, min80% below 150micron/100mesh	200g