Expand 300 times Expandable Graphite 200 Mesh Expandable Natural
Flake Graphite Powder
Products Description :
Expandable graphite, also known as flexible graphite, is made of
high-quality natural flake graphite, which is processed by high
temperature and scaly into worm-like shape. The volume can be
expanded by 100-400 times. This expanded graphite still retains the
properties of natural graphite and has good properties. Forming
plasticity, flexibility, ductility and sealing, it is an ideal new
sealing material and high quality raw materials for various
graphite sheets. It is a dynamic seal in the petroleum, chemical,
electric, aerospace, automotive, marine and instrumentation
industries. It has a wide range of applications and can also be
used as a new type of mold flux and heat generation agent for the
metallurgical industry.
Products Details and Parameters :
High temperature resistant, good low temperature resistance,
corrosion resistance, and thermally conductive, etc., in addition,
graphite, expanded graphite is also called a worm worm between
gears mesh, expanded graphite formation plate strip, has a good
compressibility, resilience and low stress relaxation rate.
It can be used for various dynamic and static seals in
petrochemical, electric power, metallurgy and machinery industries,
and shows the advantages of low cost, low energy consumption, long
service life and good effect.
Application
As the expandable graphite has the ability of anti destruction and
high expansion rate in high temperature, it can be used as an
effective intumescent flame retardant material in the composition
of fire-proof package, plastic fire-proof plugging material and
fire-proof ring for building fire-proof plugging (such as sealing
building pipes, cables, wires, gas pipes, gas pipes, etc.) Air duct
through the hole, etc. The fine particles of expandable graphite
can be added into the common coatings to produce a better flame
retardant and antistatic coating, and improve its high temperature
resistance and fire resistance. A large number of light non
combustible carbon layers formed in the fire can effectively block
the heat radiation to the substrate and effectively protect the
substrate. In addition, because graphite is a good electric
conductor, the coating can prevent the accumulation of static
charges, and can be used in oil storage tanks to achieve the dual
effect of fire and static electricity. Fireproof board, fireproof
paper, anti-corrosion and high temperature resistant board:
expandable graphite layer is lined on the metal base, carbonization
bonding layer is between the expandable graphite layer and the
metal base, and carbonization protection layer is covered outside
the expandable graphite layer. It has the properties of corrosion
resistance, high temperature resistance and high pressure
resistance. At the same time, it is resistant to heat shock and can
be used normally at low temperature. It is not afraid of fast
cooling and fast heating, and has excellent heat conductivity. The
service temperature is - 100 ~ 2000 ºC. It has the advantages of
wide application, easy manufacture and low cost. In addition, the
graphite paper formed by high temperature expansion of expandable
graphite is also used in places of fire prevention and insulation.
Products Features :
Due to its special structure, graphite has the following special
properties:
1) High temperature resistance: The melting point of graphite is
3850 ± 50 ºC, and the boiling point is 4250 ºC. Even if it is
burned by ultra-high temperature arc, the weight loss is small and
the coefficient of thermal expansion is also small. The strength of
graphite strengthens with increasing temperature. At 2000 ºC, the
strength of graphite doubles.
2) Electrical and thermal conductivity: The electrical conductivity
of graphite is one hundred times higher than that of ordinary
non-metallic ores. Thermal conductivity exceeds metal materials
such as steel, iron, and lead. The thermal conductivity decreases
with increasing temperature. Even at extremely high temperatures,
graphite becomes an insulator. Graphite can conduct electricity
because each carbon atom in graphite only forms 3 covalent bonds
with other carbon atoms, and each carbon atom still retains 1 free
electron to transfer charge.
3) Lubricity: The lubricating performance of graphite depends on
the size of graphite flakes. The larger the flakes, the smaller the
friction coefficient and the better the lubricating performance.
4) Chemical stability: Graphite has good chemical stability at room
temperature, and is resistant to acid, alkali and organic solvents.
5) Plasticity: Graphite has good toughness and can be rolled into a
very thin sheet.
6) Thermal shock resistance: When used at room temperature,
graphite can withstand the drastic change of temperature without
damage. When the temperature changes suddenly, the volume of
graphite does not change much, and no cracks will occur.
Loading &Delivery:
25kg/500kg/1000kg pp bags or as your request
