data sheet of 100um synthetic graphite sheet

Graphite sheet

Synthetic graphite sheet, also known as artificial graphite sheet, is a new type of thermal interface material made of polyimide.

It adopts advanced carbonization, graphitization and calendering process to produce a thermally conductive film with unique

lattice orientation through high-temperature sintering at 3000 °C.

With the upgrading of electronic products, the growing number of mini, highly integrated and high-performance electronic devices,

resulting in a large number of heat dissipation management needs. DSN can provide thinnest graphite foil 12um with thermal conductivity up to 1900W/ m-K.

With the arrival of 5G high-speed transmission communication, the heat dissipation requirement is higher and it will be the biggest obstacle for

smartphones to move forward. While the high thermal conductivity graphite materials will help 5G smartphones break through the “heat dissipation” problem.

Now DSN is Samsung's strategic partner for thermal management.

Product Description

Features of synthetic graphite sheet:

Excellent thermal conductivity : up to 1950 W/m•K (2 to 5 times as high as copper, 3 to 8 time as high as aluminum)
Lightweight: Specific gravity : 1.9 to 2.1 g/cm3
Flexible and easy to be cut. (withstands repeated bending)
Low thermal resistance
Low heat resistance with flexible Graphite sheet
Low repulsion and easy to keep the product's shape after attaching
RoHS, REACH compliant
Siloxane Free

Application of synthetic graphite sheet:

Thermal interface materials are designed for use in applications requiring reliable performance, low contact resistance, long life, low maintenance and high thermal conductivity. The flexible graphite materials are die-cut to ensure exact fit and reduce module-to-module variation during assembly. The compressibility of the material improves surface contact, reducing thermal impedance and can compensate up to 125μ of flatness variation between the contact surfaces while the high in-plane thermal conductivity reduces hot spots. With the rise of new energy vehicles, graphene sheet is widely used in aluminum ion battery.

Item No.		DSN5017 17um	DSN5025 25um	DSN5032 32um	DSN5040 40um
Thickness (um)		17±3	25±3	32±4	40±4
Thermal conductivity	X-Y axis (w/m.k)	1600~1800	1500~1700	1400~1600	1200~1400
Thermal conductivity	Z axis (w/m.k)	10~15	10~15	10~15	10~15
In-plane thermal diffusivity(mm²/s)		940~1060	880~1000	860~990	780~920
Density (g/cm³)		2.00±0.1	2.00±0.10	1.90±0.1	1.80±0.1
Heat capacity (J/g/K)		0.85±0.01	0.85±0.01	0.85±0.01	0.85±0.01
Operation temperature (℃)		-40~400	-40~400	-40~400	-40~400
Conductivity (s/m)		3.49 x 107	2.46 x 107	1.49 x 107	1.38 x 107
Bending (angle180, R5)		50000	50000	50000	30000
Remark: Above Thermal conductivity was tested by third-party testing organization (Netzsch, Germany) according to the laser scattering. Heat-resistance temperature is the graphite sheet excluding PET film.

Item No.		DSN5050 50um	DSN5070 70um	DSN5080 80um	DSN5100 100um
Thickness (um)		50±5	70±7	80±8	100±10
Thermal conductivity	X-Y axis (w/m.k)	1200~1400	1100~1300	1000~1200	900~1000
Thermal conductivity	Z axis (w/m.k)	10~15	15~20	15~20	15~20
In-plane thermal diffusivity(mm²/s)		780~920	760~900	730~880	700~780
Density (g/cm³)		1.80±0.1	1.70±0.1	1.60±0.1	1.50±0.1
Heat capacity (J/g/K )		0.85±0.01	0.85±0.01	0.85±0.01	0.87±0.01
Conductivity (s/m)		---	7.43 x 106	---	5.41 x 106
Operation temperature (℃)		-40~400	-40~400	-40~400	-40~400
Bending (angle180, R5)		20000	20000	20000	20000
Remark: Above Thermal conductivity test by third-party testing organization (Netzsch, Germany) according to the laser scattering. Heat-resistance temperature is bare graphite sheet only excluding PET film.

Products

Graphite sheet