Heat Dissipation Silicone Elastomer Coating for Insulated Wire
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current heat dissipation materials for electronic devices and vehicles face limitations in thermal conductivity and manufacturing costs, and there is a need for lightweight, high-performance insulated wires with improved heat dissipation, insulation, and flame retardancy.
Innovation Solution
A heat dissipation silicone elastomer compound is developed by adding a silane-treated anti-tracking agent and chopped strands of metal-coated fiber yarn treated with an adhesion enhancer to a silicone elastomer compound, which is applied to insulated wires through a process involving an insulating layer, light shielding layer, and coating layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat dissipation materials are used for high-density integration and increased power consumption, then thermal conductivity is improved, but weight increases
Solution Approach 1:
The patent uses a composite coating layer comprising a silicone elastomer matrix combined with heat dissipation fillers (such as aluminum oxide, silicon carbide, or boron nitride particles) to achieve high thermal conductivity while maintaining lightweight properties. The composite structure allows efficient heat transfer through the filler network while the silicone elastomer binder keeps the overall density low.
Solution Approach 2:
The heat dissipation coating is applied selectively to specific regions of the insulated wire where heat generation is most critical, such as areas near high-power electronic components or motor windings. This localized application optimizes heat dissipation performance while minimizing the total amount of heat dissipation material used, thereby reducing overall weight.
2Reliability
If insulation properties are enhanced for high-voltage applications, then electrical insulation is improved, but manufacturing complexity increases
Solution Approach 1:
The coating layer serves multiple functions simultaneously: it provides electrical insulation for high-voltage protection, heat dissipation through thermally conductive fillers, and flame retardancy through the silicone elastomer matrix. This multi-functional design eliminates the need for separate insulation layers, heat dissipation materials, and fireproof coatings, thereby simplifying the manufacturing process despite the high performance requirements.
Solution Approach 2:
The use of a composite coating material that integrates insulation, heat dissipation, and flame retardancy properties into a single applicatable layer reduces the number of manufacturing steps. The coating can be applied in one extrusion or dipping process, followed by a single curing step, rather than requiring multiple sequential applications of different materials.
3Reliability
If flame retardancy is improved through material selection, then safety is enhanced, but thermal conductivity decreases
Solution Approach 1:
The coating combines flame-retardant silicone elastomer with high thermal conductivity fillers such as aluminum oxide, silicon carbide, or boron nitride. The silicone elastomer provides excellent flame retardancy and chemical stability, while the inorganic fillers create thermal conduction pathways through the matrix, achieving both flame safety and effective heat dissipation simultaneously.
Solution Approach 2:
The patent optimizes the particle size, shape, and distribution of heat dissipation fillers within the flame-retardant matrix to maximize thermal conductivity. By controlling filler concentration (typically 30-70 wt%), particle morphology, and spatial arrangement, the coating achieves sufficient thermal conduction while maintaining the flame-retardant properties of the silicone elastomer system.
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 solution enhances heat dissipation, insulation, and flame retardancy while maintaining lightweight properties, improving dispersity, tensile strength, thermal conductivity, and breakdown voltage, addressing the challenges of high-density integration and increased power consumption in electronic devices and vehicles.
Implementation Method 1
a conductor coated with an adhesion enhancer; an insulating layer formed on the outer circumference of the conductor; a light shielding layer formed on the outer circumference of the insulated wire by braiding a metallic fiber yarn; and a coating layer formed on the outer circumference of the light shielding layer
Implementation Method 2
heat dissipation silicone elastomer compound; improved heat dissipation properties; thermal conductivity
Implementation Method 3
an anti-tracking agent surface-treated with a silane; insulation properties; breakdown voltage
Implementation Method 4
a light shielding layer formed on the outer circumference of the insulated wire by braiding a metallic fiber yarn
Data Source
AI summary
The present invention relates to a coated insulated wire having improved heat dissipation properties, insulation properties, flame retardancy, and lightweight properties; and a method of manufacturing the same.