Thermal Interface Materials Using Percolated Conductive Networks
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Solution Overview
Problem
Current thermal interface materials face challenges in effectively dissipating heat due to limited thermal conductivity and space constraints, which can lead to thermal loading and premature failure in high-power, high-density applications.
Innovation Solution
A thermally conductive polymer composite with a percolated network of elongated, thermally conductive particles, such as metallic nano-wires or carbon nano-tubes, dispersed in a matrix material, providing a high aspect ratio and low thermal resistance pathways for efficient heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional thermal interface materials are used, then the design is simpler, but the thermal conductivity is insufficient leading to thermal loading and premature failure
Solution Approach 1:
The patent employs composite materials by combining polymer matrix with thermally conductive fillers (such as aluminum oxide, zinc oxide, or boron nitride particles) to create a material that achieves high thermal conductivity while maintaining electrical insulation properties. This composite approach resolves the contradiction by providing superior thermal management performance without requiring complex multi-component systems.
2Temperature
If higher thermal conductivity materials are used, then heat dissipation improves, but space requirements increase
Solution Approach 1:
The patent utilizes parameter changes by optimizing the concentration, size distribution, and shape of thermally conductive fillers within the polymer matrix. By controlling these parameters, the material achieves high thermal conductivity in thin-film configurations, thereby improving heat dissipation efficiency without increasing the required space or material thickness.
3Reliability
If thermally conductive particles are added to polymer matrix, then thermal conductivity increases, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by using discrete particulate fillers rather than continuous conductive networks. This allows the thermally conductive particles to be independently dispersed throughout the polymer matrix, simplifying manufacturing processes such as injection molding or extrusion while maintaining high thermal conductivity through optimized particle distribution and orientation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composite material achieves enhanced thermal conductivity, allowing for efficient heat dissipation and improved performance in high-power applications by forming a three-dimensional network of thermally conductive pathways with low resistance, thereby addressing the limitations of existing thermal interface materials.
Implementation Method 1
Thermal interface materials are an essential part of thermal management system as they help to ensure a continuous thermal conductive path between the heat source and heat sink/dissipater
Data Source
AI summary
This disclosure relates generally to thermally conductive polymer composites and particularly to thermal interface materials.