Layered Thermal Interface Material for Heat Transfer and Vibration Isolation
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Solution Overview
Problem
Existing thermally conductive and vibration-isolating interface materials, such as graphite-coated foam composites, face challenges including poor vibration isolation and heat resistance, high contact thermal resistance, limited heat transfer area, and poor manufacturability for mass production.
Innovation Solution
A thermally conductive and vibration-isolating interface material comprising thermally conductive strips with an inner core of foamed silicone, a back adhesive layer, a heat transfer layer, and an insulating layer, along with a self-adhesive thermally conductive pad covering the outer side of the strips, which enhances heat transfer and vibration isolation while improving manufacturability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If graphite-coated foam composite materials are used, then heat transfer performance is improved, but vibration isolation performance deteriorates
Solution Approach 1:
The interface material is divided into multiple functional layers: a foam base layer for vibration isolation, a graphite coating layer for heat transfer, and an adhesive layer for bonding. This segmentation allows each layer to optimize its specific function without compromising the other, resolving the contradiction between heat transfer and vibration isolation performance
Solution Approach 2:
The invention uses a composite structure combining foam material (for vibration isolation) with graphite coating (for heat transfer) and adhesive layers. This composite approach integrates the beneficial properties of different materials to simultaneously achieve both vibration isolation and heat transfer functions
2Strength
If common back adhesive is used on the outer surface, then adhesion is achieved, but contact thermal resistance increases
Solution Approach 1:
A thin adhesive layer serves as an intermediary between the foam base and the outer surface, providing necessary adhesion while minimizing thermal resistance. The adhesive layer is designed to be thin enough to not significantly impede heat transfer while still providing sufficient bonding strength
3Temperature
If graphite foam is used without assembly fixtures, then heat dissipation is achieved, but mass production manufacturability deteriorates due to scattering during assembly
Solution Approach 1:
The interface material is designed as a flexible composite structure with adhesive layers that allow it to conform to surfaces and remain in place during assembly operations. The adhesive properties and flexible nature prevent scattering during handling and assembly, enabling mass production while maintaining the heat dissipation functionality
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 proposed interface material achieves improved vibration isolation and heat transfer performance due to the foamed silicone inner core and self-adhesive thermally conductive pad, while also addressing manufacturability issues for mass production, ensuring reliability at high temperatures.
Implementation Method 1
the inner core is a foamed silicone material with high porosity
Implementation Method 2
vibration-isolating interface material
Implementation Method 3
the outside of the back adhesive layer is adhered with a heat transfer layer
Implementation Method 4
thermally conductive strips in multiple groups of arrays... the thermally conductive pad covers one of or both of the upper and lower sides of the thermally conductive strip
Implementation Method 5
the outside of the heat transfer layer is covered with an insulating layer
Implementation Method 6
the outside of the inner core is covered with a back adhesive layer
Data Source
AI summary
The present invention discloses a thermally conductive and vibration-isolating interface material, comprising thermally conductive strips in multiple groups of arrays, wherein the thermally conductive strip comprises an inner core on the inside, the outside of the inner core is covered with a back adhesive layer, the outside of the back adhesive layer is adhered with a heat transfer layer, the outside of the heat transfer layer is covered with an insulating layer, and a thermally conductive pad is provided on the outer side of the thermally conductive strip, with the area of the thermally conductive pad being greater than the surface area of the single thermally conductive strip.