EXPANDABLE GRAPHITE
Expandable graphite is a kind of graphite product that takes natural flake graphite as raw material and is treated by chemical or electro-chemical technology. When it is under high temperature, it can expand instantly; flake graphite becomes vermiform graphite, which is loose in structure porous, curved, with larger surface area, high surface energy and strong adsorptive power. They can inlay the vermiform graphite pieces. In this way, its flexibility, resilience and mach inability are increased. It is high-quality material for making flexible graphite.
It’s sheets and various sealing component; it can be used for heat preservation in metal lurgical industry and as fire-exiting uishing agent for fire fighting. The development of low temperature expandable graphite provides new method for the development of fire prevention material.
Main specification
item
|
unit
|
Specification
|
Size
|
Mesh
|
32 50
80 100
|
Sieve
residue
|
%
|
≥80
|
Ash content
|
%
|
0.1-20
|
Volatile
content
|
%
|
≤15
|
moisture
|
%
|
≤1
|
Expansion
rate
|
Cc/g
|
100-300
|
PH
value
|
PH
|
≥4
|
Sulphur
content
|
%
|
≤2.5
|
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|
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