Multi-Layer Composite Graphite Film

Multi-Layer Composite Graphite Film
Details:
Multi-Layer Composite Graphite Film is crafted with high-purity graphite via multi-layer composite technology, boasting excellent thermal conductivity, lightweight property, and flexibility for easy die-cutting. Suitable for 5G devices, electronic heat dissipation, and new energy vehicles, it stays stable across wide temperatures and meets RoHS standards.
Material:natural graphite
MOQ:2000m²
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Description
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Product features

 

  • High thermal diffusivity: it has a very high thermal conductivity, which can effectively conduct heat from the heat source and is suitable for various applications requiring efficient heat dissipation.

 

  • Bending resistance: The film has good flexibility, can adapt to a variety of complex surface shapes, to ensure stability and reliability in a variety of application scenarios.

 

  • Light and portable: it is light in thickness and weight, easy to carry and install, and does not cause excessive impact on the overall weight and volume of the equipment.

 

  • High electrical conductivity: graphite material itself has good electrical conductivity, so multi-layer composite graphite film also has a wide application prospect in electromagnetic shielding, touch screen and other fields.

 

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Technical Parameters

 

Thickness (mm)

Width (mm)

Length (m)

Density (g/cm³)

Carbon Content

Thermal Conductivity (W/m·K)

0.05

500

100

1.5–1.75

99.5–99.9

300–450

0.06

500

100

1.5–1.8

99.5–99.9

400–500

0.08

500

100

1.5–1.9

99.9–99.9

400–600

0.1

500

100

1.5–1.85

99.5–99.9

400–500

0.12

500–1000

100

1.5–1.85

99.5–99.9

400–500

0.15

500–1000

100

1.5–1.95

99.9–99.9

400–600

0.2

500–1000

100

1.5–1.85

99.5–99.9

400–500

Note:Customizable specifications available for thickness, width, length, and performance parameters upon request.

 

Application area

 

  • Electronic devices: flexible electrodes, transparent conductive films (touch screens, OLED), high-frequency transistors.

 

  • Energy storage: lithium/sodium ion battery cathode, supercapacitor electrode, fuel cell bipolar plate.

 

  • Thermal management: CPU heat dissipation film, 5G equipment thermal pad, spacecraft thermal interface material.

 

  • Electromagnetic shielding: absorption or reflection of electromagnetic waves, used in military industry and communication equipment.

 

  • Environmental protection and medical: seawater desalination membrane, gas separation membrane, biosensor substrate.

 

 

 

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Preparation method

The preparation method of multi-layer composite graphite film includes stacking the multi-layer graphite material, and making it closely combined through heat pressing, heat treatment and other processes to form a composite film with excellent properties.

 

 

 

Solutions And Customized Services Provided

 

 

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01.Fragile graphite film/powder pollution production line

The surface of Multi Layer Composite Graphite Film is covered with PI/PET protective film, which wraps the graphite layer to prevent dust from falling off. It has passed IPC/JEDEC dustproof testing and is suitable for mobile phone/car module assembly.

02.Manual double-sided adhesive is required → bubble/offset

Multi Layer Composite Graphite Film comes pre installed with optical grade pressure-sensitive adhesive (PSA) sandwich or single-sided backing, which comes with adhesive at the factory and allows customers to directly adhere to it, eliminating bubbles and improving the pass through rate.

03.Graphite film conductive interference sensitive circuit

Multi Layer Composite Graphite Film interlayer with copper foil/aluminum foil or conductive adhesive for directional control can be designed as a "thermal conductivity+local shielding" composite structure, or an outer insulation PI can block the conductive path.

04.Ultra thin space but still requires reinforcement of stiffness

Multi Layer Composite Graphite Film is laminated to increase stiffness, with a total thickness of only 0.08-0.15mm, but its bending stiffness is significantly higher than that of the bare film, and it does not wrinkle after automated mounting.

05.Difficult rework and tearing of surrounding parts

Multi Layer Composite Graphite Film with low residual adhesive PSA option, when reworked, the entire film can be removed without residual adhesive to protect PCB/BGA.

 

 

Market prospect

 

  • With the continuous advancement of miniaturization, intelligence, and multifunctionality in electronic devices, the demand for heat dissipation materials has reached unprecedented levels. Multilayer composite graphite films have emerged as a groundbreaking solution in this field, celebrated for their exceptional thermal conductivity and flexible design. As graphene-based innovations continue to advance, these advanced composite materials are poised to unlock even greater market potential in the coming years.

 

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