Graphene Composite Thermal Management via Random Orientation
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Solution Overview
Problem
Existing graphene-containing composite materials can be tedious and expensive to manufacture, and may not exhibit suitable properties for certain applications, particularly in thermal management.
Innovation Solution
A composite material comprising a thermally conductive matrix with randomly oriented graphene particles, such as metal or polymeric materials, which improves thermal conduction properties and ease of fabrication, with graphene platelets dispersed at specific volume percentages and thickness ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If graphene particles are aligned or oriented in a specific direction within the matrix, then thermal conduction properties may be improved in that direction, but manufacturing complexity and difficulty increase significantly
Solution Approach 1:
The patent employs homogeneous distribution of randomly oriented graphene particles throughout the matrix, eliminating the need for complex alignment processes. This uniform random distribution ensures isotropic thermal conduction properties while maintaining simple manufacturing procedures, directly resolving the contradiction between thermal performance and manufacturing complexity.
Solution Approach 2:
The patent changes the orientation parameter of graphene particles from aligned to random, and adjusts the volume percentage parameter (1-40 vol%) to optimize thermal conduction. By modifying these parameters, the patent achieves satisfactory thermal management performance without requiring complex alignment processes, thus resolving the technical contradiction.
2Temperature
If high volume percentage of graphene particles is used to improve thermal conduction, then thermal management performance improves, but manufacturing cost and process difficulty increase
Solution Approach 1:
The patent systematically varies the graphene volume percentage parameter within the range of 1-40 vol% to identify the optimal balance between thermal conduction performance and manufacturing ease. This parameter optimization allows achieving sufficient thermal management properties without excessive graphene content that would complicate manufacturing.
Solution Approach 2:
The patent applies local quality by dispersing graphene particles non-uniformly in specific regions or at specific concentrations within the matrix, rather than requiring uniform high concentration throughout. This localized approach achieves effective thermal conduction pathways while reducing overall manufacturing complexity and cost.
3Temperature
If conventional composite materials are used for thermal management, then manufacturing processes are well-established, but thermal conduction properties are insufficient
Solution Approach 1:
The patent creates a composite material system combining graphene particles with metal or polymeric matrices, leveraging the superior thermal conduction properties of graphene while maintaining the structural integrity and manufacturability of conventional matrices. This composite approach achieves the necessary thermal performance for reliable thermal management applications.
Solution Approach 2:
The matrix material serves as an intermediary that facilitates the integration of graphene particles into functional thermal management components. The matrix mediates between the graphene particles' thermal conduction capability and the structural requirements of heat spreaders and heat sinks, enabling reliable application performance.
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 enhances thermal conduction and fabrication ease, offering improved performance in thermal management applications, such as heat spreaders and heat sinks, with reduced impact on mechanical properties and processibility.
Implementation Method 1
the composite material provides improved thermal conduction properties
Data Source
AI summary
In one aspect, a composite material is disclosed herein that includes graphene platelets dispersed in a matrix. In some cases, the graphene platelets are randomly oriented within the matrix. The composite material can provide improved thermal conductivity and may be formed into heat spreaders or other thermal management devices to provide improved cooling to electronic, electrical components and semiconductor devices.