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What Is Synthetic Graphite Sheet

Polyimide (PI) was carbonized under inert atmosphere and pressure and graphitized at 2800-3200℃ to produce synthertic graphite sheet (also called artifical graphite sheet). The manufactured product has a highly preferred orientation graphite layer along the film surface similar to the highly oriented pyrolytic graphite, and the crystallinity is high. This method has a simpler preparation process than the pyrolytic graphite preparation.  

Dasen's synthetic graphite is made by heat treatment of polyimide (PI) films. Polyimide referred to as PI, with "gold film" "pyramid tip" polymer materials, the most promising engineering plastics in the 21st century reputation, PI film is the key material for the preparation of synthetic graphite, widely used in mobile phones, computers and other intelligent terminal products. The carbonization and graphitization method of PI film has more advantages in the preparation of highly crystalline and highly oriented graphite sheets with high thermal conductivity. The thermal conductive graphite materials prepared by PI film heat treatment method have high tensile strength, relatively complete structure, low crystal structure defects, high degree of carbon atom order, and thermal conductivity coefficient of 900-1950 W/mK.  In terms of thickness, this process route can produce thermal conductive graphite as thin as 0.012mm (12μm), which has a good performance in the light and thin heat dissipation design of mobile phones. 
Technical Parameters
  • Item No. DSN5017 DSN5025 DSN5032 DSN5040 DSN5050 DSN5050 DSN5100
    Thickness (um) 17±3 25±3 32±4 40±4 50±5 70±7 100±10
    X-Y axis (w/m.k) 1600~1800 1500~1700 1400~1600 1300~1500 1100~1300 1100~1300 900~1100
    Z axis (w/m.k) 10~15 10~15 10~15 10~15 10~15 15~20 15~20
    Density (g/cm³) 2.0±0.1 2.0±0.10 1.9±0.1 1.8±0.1 1.7±0.1 1.7±0.1 1.4±0.1
    Heat capacity (J/g/K) 0.85±0.01
    Operation temperature (℃) -40 ~ 400
    Conductivity (s/m) 3.49 x107 2.46 x 107 1.49x107 1.38 x 107 -- 7.43 x 106 5.41 x 106
    Bending (angle180, R2) 5000 5000 5000 3000 2000 2000 2000
  • Item No. DSN5017HTD DSN5025HTD DSN5032HTD DSN5040HTD DSN5050HTD DSN5070HTD DSN5100HTD
    Thickness (um) 17±3 25±3 32±4 40±4 50±5 70±7 100±10
    X-Y axis (w/m.k) ≥1900 ≥1800 ≥1700 ≥1700 ≥1600 ≥1500 ≥1300
    Z axis(w/m.k) 10~15 10~15 10~15 10~15 15~20 15~20 15~20
    Density (g/cm³) ≥2.05 ≥2.0 ≥2.0 ≥2.0 ≥2.0 ≥2.0 ≥1.7
    Heat capacity (J/g/K) 0.85
    Operation temperature (℃) -40 ~ 400
    Bending (angle180, R2) 50000 50000 50000 30000 20000 20000 20000
    Thermal capability ≥32,300 ≥45,000 ≥54,400 ≥68,000 ≥80,000 ≥105,000 ≥130,000
  • Item No. DSN5065UHTD DSN5070UHTD DSN5085UHTD DSN5100UHTD
    Thickness (um) 65±6 70±7 85±9 100±10
    X-Y axis (w/m.k) ≥1800 ≥1700 ≥1700 ≥1500
    Z axis(w/m.k) 15~20
    Density (g/cm³) ≥2.1 ≥1.9
    Heat capacity (J/g/K) 0.85
    Operation temperature (℃) -40~400
    Bending (angle180, R2) 20000
    Thermal capability ≥117,000 ≥119,000 ≥144,500 ≥150,000
  • Do you have MOQ?
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    No MOQ for the standard product.
  • Do you provide samples?
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    Yes, we do, and could deliver in 24 hours after confirmation for stock.
    And we can offer free samples within one SQM. Just please pay the shipping fee.
  • Are you a factory or trading company?
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    We are a professional manufacturer for over 10 years.
  • What is the lead time for mass production?
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    The lead time of mass production is about 5 - 7 days.
  • Can you provide finished product processing service?
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    Yes, we can provide the finished product after die-cutting.
  • Can it be customized according to the demands?
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    Yes, it can be made in different sizes or deeply processed.
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