Products

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. 

Graphite sheet
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.

 

Thickness DSN5012 DSN5017 DSN5025 DSN5032 DSN5040
0.012±0.003mm 0.017±0.003mm 0.025±0.003mm 0.032±0.004mm 0.04±0.005mm
Thermal 
conductivity
X-Y axis
(w/m.k)
1700~1900 1500~1700 1400~1600 1300~1500 1200~1400
Z axis
 (w/m.k)
10~15 15~18 16~19 17~20 18~20
In-plane Thermal Diffusivity
(mm²/s)
980~1040 840~950 800~920 800~920 760~890
Density (g/cm³) 2.1±0.05 2.05±0.05 2±0.05 1.85±0.05 1.8±0.05
Tensile strength (psi) 650 650 650 650 650
Heat resistance temperature () 400 400 400 400 400
Thermal resistance () 0.15% 0.15% 0.15% 0.15% 0.15%
Electric conductivity (s/cm) 19000 19000 19000 19000 19000
Heat capacity (J/g/K) 0.87±0.01 0.87±0.01 0.87±0.01 0.87±0.01 0.87±0.01
Operation temperature () -40~400 -40~400 -40~400 -40~400 -40~400
Bending (angle180, R5) 20000 20000 20000 20000 20000
Thickness DSN5050 DSN5070 DSN5100 DSN5150 DSN5200
0.05±0.005mm 0.07±0.007mm 0.1±0.01mm 0.15±0.015mm 0.2±0.02mm
Thermal 
conductivity
X-Y axis
(w/m.k)
1100~1300 1100~1300 630~830 600~800 500~700
Z axis
 (w/m.k)
18~21 18~21 18~21 18~21 18~21
In-plane Thermal Diffusivity
(mm²/s)
740~870 700~830 600~750 630~840 580~810
Density (g/cm³) 1.7±0.05 1.8±0.05 1.2±0.05 1.1±0.05 1±0.05
Tensile strength (psi) 650 650 650 650 650
Heat resistance temperature () 400 400 400 400 400
Thermal resistance () 0.15% 0.15% 0.15% 0.15% 0.15%
Electric conductivity (s/cm) 19000 19000 19000 19000 19000
Heat capacity (J/g/K ) 0.87±0.01 0.87±0.01 0.87±0.01 0.87±0.01 0.87±0.01
Operation temperature () -40~400 -40~400 -40~400 -40~400 -40~400
Bending (angle180, R5) 20000 20000 20000 20000 20000