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Flexible thermal pad

Innovative flexible thermal solution based on copper mesh/copper fiber 3D skeleton. Through active fusion-bonding technology, high thermal conductivity particles such as diamond are fixed to a flexible metal skeleton, forming a 3D thermal conductive phase network with both high thermal conductivity and excellent interface adaptability.

Core performance metrics

Thermal conductivity (in-plane)200–400 W/m·K
Thermal conductivity (through-thickness)30–150 W/m·K
Flexible deformation capabilityExcellent
Coefficient of thermal expansionClose to copper
Thickness range0.5–3 mm

Technical advantages

3D skeleton structure

Uses copper mesh or copper fiber as 3D skeleton, providing continuous thermal conduction channels. The skeleton itself has good flexibility, adapting to uneven interfaces and thermal stress deformation.

Active fusion bonding

Through active fusion-bonding technology, high thermal conductivity particles such as diamond and boron nitride are firmly bonded to the metal skeleton, forming stable chemical metallurgical connections for long-term reliability.

Flexibility and thermal conductivity

Breaks through limitations of traditional rigid thermal materials; while maintaining high thermal conductivity, provides excellent flexibility and interface adaptability, solving thermal conduction challenges in complex assembly scenarios.

Technical principle & preparation

Core structure design

High-performance thermal skeleton selection

Uses precision micron-scale metal mesh or directionally aligned metal fibers as 3D thermal conduction scaffold. Leverages metal's excellent intrinsic thermal conductivity and good mechanical ductility to build continuous heat conduction network.

  • Mesh structure: Regular geometric arrangement, precise thickness control, ensuring consistency for large-area applications.
  • Fiber network: 3D disordered interweaving, excellent mechanical flexibility, well adapting to non-flat interfaces.

High thermal conductivity composite reinforcement

Within microscopic pores of the metal skeleton, precisely embed modified carbon-based reinforcement particles (e.g., diamond, boron nitride). Through interface affinity engineering, achieve atomic-level metallurgical bonding between reinforcement and metal skeleton, eliminating physical gaps in traditional materials.

Diamond reinforcement
Provides rapid vertical thermal conduction channels
Ceramic-based reinforcement
Balances high thermal conductivity with system electrical insulation needs

Preparation process

1

Interface activation pretreatment

Deep cleaning and surface energy regulation of metal skeleton, removing microscopic oxide layers. Through self-developed surface modification process, significantly improves interface wettability and bonding strength in subsequent brazing.

2

Multi-dimensional dispersion filling

Uniformly disperse specially coated reinforcement particles and active interface components; using vacuum-assisted or high-frequency physical energy, fill the 3D space of the skeleton to build gap-free thermal paths.

3

Controlled physical metallurgical bonding

Under vacuum or precisely controlled protective atmosphere, through optimized thermal cycle, induce active elements to undergo in-situ chemical reaction at the interface. Process completes under low pressure, achieving stable carbide/nitride interface formation, eliminating interface thermal resistance.

4

Precision post-processing and customization

Release internal stress through controlled cooling logic to obtain overall flexible structure with excellent performance. Can undergo surface flattening or precision cutting per design drawings based on end requirements.

Application prospects

Evolution of high thermal conductivity interface materials

This solution combines metal strength, carbon-based rapid heat transfer, and polymer compliance. As next-gen high-performance thermal interface material (TIM), it addresses traditional thermal pad issues of "low thermal conductivity, easy drying/cracking, poor interface conformity," widely applied in:

  • New energy powertrain: Ensures long-term thermal safety of battery packs and motor controllers.
  • High-integration comm base stations: Addresses extreme heat flux density of 5G/6G RF modules.
  • Space-grade electronic payloads: Achieves excellent heat spreading under lightweight requirements.
Explore thermal management applications

Customized solutions

We provide full-chain R&D services from skeleton design, particle formulation optimization to finished product specification customization. For customer-specific heat flux density needs, through interface stress and reinforcement distribution adjustment, we provide unique performance customization.

Contact application engineer

Related patent technology

Core intellectual property layout

We have built a solid patent moat covering material composition, interface engineering, and core preparation processes.

Core invention patent

A flexible high-thermal-conductivity composite reinforced by active fusion-bonding metal skeleton and its preparation method

This patent defines in detail a systematic method using metal mesh/fiber as structural base and in-situ metallurgical welding to fix high thermal conductivity particles. Its core value is replacing traditional physical doping with interface chemical bonding, fundamentally improving interface heat transfer efficiency and anti-aging reliability.

Application No.: 202511963728.9

Get flexible thermal pad samples

We provide flexible thermal pad samples with customized dimensions and performance parameters; welcome to contact our technical team