Dielectric-Coated Gasket for Thin High-Temperature Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gaskets with electrical isolating properties face limitations such as insufficient dielectric strength, limited temperature resistance, increased thickness, structural complexity, and poor chemical resistance, which restrict their application in various industries.
Innovation Solution
A gasket design featuring a core component coated with a dielectric material like polyimide, ceramic, or aluminum oxide, which fully encapsulates the core, providing improved electrical isolation, reduced thickness, and enhanced temperature resistance, while eliminating the need for glass reinforced epoxy (GRE).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass reinforced epoxy (GRE) is used to provide electrical isolation, then dielectric strength is improved, but temperature resistance deteriorates because GRE becomes soft above 250-350°F
Solution Approach 1:
The patent changes the material parameters by selecting polyimide instead of GRE, which has a higher glass transition temperature and maintains structural integrity at elevated temperatures while providing the required dielectric strength for electrical isolation
Solution Approach 2:
The patent uses composite construction by combining polyimide coating with a core gasket component, creating a material system that leverages the high-temperature stability of polyimide while maintaining the sealing functionality of the core component
2Reliability
If thick gasket material is used to achieve sufficient voltage resistance, then dielectric strength is improved, but device complexity increases and application flexibility is reduced
Solution Approach 1:
The patent changes the dielectric material parameters by selecting polyimide with superior dielectric strength properties, enabling achievement of required voltage resistance with thinner gasket profiles and reducing overall device complexity
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 gasket achieves high dielectric strength, wider temperature range, simplified structure, and improved chemical resistance, allowing for thinner profiles and broader application in environments like steam and nuclear services.
Implementation Method 1
the coating or film comprises polyimide, ceramic, or aluminum oxide
Data Source
AI summary
An electrically isolating gasket is disclosed wherein a coating layer is disposed on at least one conductive surface, and in some embodiments, on all surfaces or at least all of the conductive surfaces. The electrically isolating gasket includes a core gasket component, a ring seal component, and a non-conductive inner seal component. The coating layer can be, for example, polyimide, polyamide, ceramic, and aluminum oxide.