Composite Graphite Film

Product Overview

Composite Graphite Film is a high-performance synthetic composite thermal management material produced from polymers through oxidation, high-temperature carbonization, and other precision processes. Its core advantage comes from the precise lamination of graphite layers with functional substrates, including insulation and adhesive layers, achieving an optimal balance of ultra-high thermal conductivity, excellent electrical insulation, and flexible processability.

This material is engineered to address heat dissipation challenges for high-heat-generating components in a wide range of electronic and industrial devices. It can be flexibly configured to meet installation requirements across diverse application scenarios. As a stable and practical thermal management solution, it is widely used in consumer electronics, industrial equipment, and aerospace applications.

Technical Parameters

All test methods follow industry standards. Parameters can be customized per customer requirements.

Key Features

Ultra-high Thermal Conductivity & Strong Anisotropy

In-plane (X-Y axis) thermal conductivity reaches up to 1900 W/m·K, approaching the theoretical limit of 2200 W/m·K - 2–4 times that of copper and 3–7 times that of aluminum. Through-plane (Z-axis) conductivity is 10–17 W/m·K, comparable to thermal greases and phase-change materials, with no performance degradation during long-term use. It rapidly conducts and distributes heat to avoid localized overheating, making it ideal for high-power equipment.

Stable Structure & High Environmental Resistance

Featuring a stable molecular structure and excellent chemical stability, the film operates reliably from -55℃ to 400℃, resisting extreme temperatures. It shows no volatilization or deformation at high temperatures, and its yellowing index after 1000 hours of outdoor exposure is only 30% that of traditional materials. It also offers improved acid and alkali resistance, ensuring stable performance under harsh conditions.

High Flexibility & Easy Installation

The film exhibits outstanding flexibility and can withstand repeated bending (R5/180° for over 2000 times) without fracture. It supports precision die-cutting, punching, edge wrapping, and custom shaping according to customer drawings. Selected models come with single-sided adhesive for easy lamination with PET and other materials, enabling convenient installation while minimizing internal space occupation - well-suited for slim and lightweight product designs.

Safe, Eco-friendly & Regulation-Compliant

Made with environmentally friendly raw materials free of hazardous substances, the film fully complies with RoHS, REACH, and other international environmental standards. Special coating technology provides single-sided insulation with a breakdown voltage exceeding 4000 VAC, effectively reducing electromagnetic interference and balancing thermal performance with electrical safety for insulation-sensitive applications.

Ultra-thin, Lightweight & Superior Mechanical Properties

Thickness is customizable from 0.012 mm to 0.12 mm, only a fraction of conventional metal heat sinks, helping save internal space and support lightweight design. It offers tensile strength up to 900 PSI (90 Shore A hardness) with excellent wear and tear resistance, significantly extending service life compared to traditional thermal materials. High-performance versions can reach 50–80 MPa in tensile strength.

 

 

Applications

With its balanced performance, Composite Graphite Film is widely applied in consumer electronics, industrial electronics, automotive electronics, new energy, aerospace, and medical devices. Its primary function is thermal homogenization and thermal control for high-heat components. Typical applications include:

Consumer Electronics: Smartphones, laptops, tablets, smart watches, AR/VR devices, and game consoles. Used for cooling chips, CPUs, batteries, and screen backlight modules to reduce heat-related lag and support ultra-slim designs, including foldable phone hinges and AR waveguide modules.

Industrial Electronics: Power amplifiers, inverters, converters, industrial sensors, and LED lighting. Improves stability and service life by dissipating heat from high-power components under harsh industrial conditions.

Automotive Electronics: In-vehicle navigation, chargers, NEV battery packs, motor controllers, and automotive displays. Adapts to temperature fluctuations, vibration, and electromagnetic interference, supporting battery energy density and lifespan.

New Energy & Energy Storage: Used in lithium-ion batteries, supercapacitors, and solar cells as electrodes or separator components to improve energy density, cycle stability, and charge-discharge efficiency. Nitrogen-doped and graphene-enhanced versions further boost battery and capacitor performance.

High-end Manufacturing: Aerospace equipment, medical devices, and drones. Provides efficient thermal management for precision components and can also support electromagnetic shielding and waterproofing in specialized models.

Product Advantages

Compared with copper foil, aluminum foil, and conventional graphite sheets, Composite Graphite Film delivers a core combination of high-efficiency heat dissipation, flexible adaptability, and safety & environmental compatibility.

It provides thermal conductivity far exceeding metals while remaining ultra-thin, lightweight, and highly formable for complex shapes and narrow spaces. It also integrates insulation, high-temperature resistance, and anti-aging properties while meeting global environmental standards.

It effectively solves key thermal challenges in modern electronics: high power density, slim design requirements, and high reliability demands. It has become a preferred material for next-generation thermal management systems and supports product innovation and upgrading across multiple industries.

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