Isolating Gasket Coating for Thin High-Temperature Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gaskets with electrically isolating properties face limitations such as inadequate dielectric strength, temperature constraints, structural complexity, limited chemical resistance, and thickness issues, 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 on all surfaces, including grooves and protrusions, eliminating the need for glass reinforced epoxy and allowing for thinner profiles and improved sealing performance.
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 and loses structural strength
Solution Approach 1:
The patent uses a composite structure combining a metal core gasket component with a ceramic coating layer. The metal core provides mechanical strength and structural integrity, while the ceramic coating provides electrical isolation and high-temperature resistance. This composite approach allows the gasket to maintain both electrical isolation properties and temperature resistance that neither material could achieve alone.
2Reliability
If thick gasket material is used to achieve sufficient voltage resistance, then electrical isolation is improved, but adaptability deteriorates due to limitations on where the gaskets can be used
Solution Approach 1:
The ceramic coating on the metal core creates a thin but highly effective electrical isolation layer. Ceramic materials have superior dielectric properties compared to traditional polymer materials, allowing adequate voltage resistance to be achieved with much thinner dimensions. This thin profile enables the gasket to fit in applications where thick gaskets would not be suitable.
3Reliability
If dielectric material is added to the core to impart electrical isolating properties, then electrical isolation is improved, but device complexity increases
Solution Approach 1:
The patent creates a two-layer composite gasket consisting of a metal core and a ceramic coating. This integrated composite structure combines the electrical isolation function with the structural core in a single unified component, rather than requiring separate layers or assemblies. The ceramic coating serves dual purposes: providing electrical isolation and protecting the metal core surface.
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 electrical isolation, expands temperature and pressure ranges, improves chemical resistance, and simplifies the gasket structure, enabling wider application in high-temperature and high-pressure environments while maintaining robust sealing capabilities.
Implementation Method 1
a coating or film of dielectric material provided on at least one surface of the core gasket component
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.