Integrated Elastomer Seal Coating for Outdoor Storage Aging
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Solution Overview
Problem
Seals made of elastomer materials exhibit premature aging due to temperature-dependent aging behavior, especially when stored outdoors where they are exposed to sunlight and high temperatures, leading to uneven aging and reduced elasticity.
Innovation Solution
Implementing thermal insulation measures such as reflective coatings or using materials with low heat conduction to protect the exposed surface areas of the seal from solar radiation, thereby reducing heat absorption and promoting even aging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the seal is stored outdoors exposed to sunlight, then the component can be stored conveniently and economically, but the seal undergoes premature aging and loses elasticity due to heat absorption
Solution Approach 1:
The patent introduces a thermally insulating coating as an intermediary layer between the sunlight (heat source) and the seal. This coating layer mediates the thermal interaction by having low thermal conductivity, thereby reducing heat transfer to the seal material and preventing premature aging while allowing outdoor storage
Solution Approach 2:
The patent changes the thermal parameters of the seal surface by applying a coating with different thermal properties (low thermal conductivity). This parameter change in the surface layer modifies how the seal interacts with thermal radiation, reducing heat absorption and protecting the underlying seal material from thermal degradation
2Reliability
If the seal contains soot particles to meet sealing requirements, then sealing performance is improved, but the seal absorbs more solar radiation and heats up, accelerating aging
Solution Approach 1:
The patent changes the optical and thermal parameters of the seal surface by applying a light-colored or reflective coating. This coating has different absorptivity and thermal conductivity characteristics compared to the soot-containing seal material, reducing solar radiation absorption and heat generation while preserving the sealing function
Solution Approach 2:
The patent applies the insulating coating specifically to the outer surface portions of the seal that are exposed to sunlight, while leaving the inner sealing portions with soot particles intact. This local differentiation allows the seal to maintain both sealing performance (through soot particles) and thermal protection (through the coating on exposed surfaces)
3Ease of manufacture
If the seal is exposed to sunlight during storage, then outdoor storage is possible, but the seal ages inhomogeneously with reduced elasticity
Solution Approach 1:
The thermally insulating coating acts as a protective intermediary that uniformly shields the seal surface from solar radiation. This creates a more uniform thermal environment across the seal surface, preventing the inhomogeneous aging that would otherwise occur due to differential heating from sunlight exposure
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 solution effectively reduces the risk of premature aging of the seal by minimizing heat absorption from solar radiation, thus maintaining the seal's desired properties and extending its lifespan.
Implementation Method 1
providing the surface portions of the seal to be protected with a reflective coating... reflecting thermal radiation
Implementation Method 2
the core of the seal cross-section to be protected from excessive heating by means of a thermal barrier... A material with low thermal conductivity is referred to as a thermal barrier
Data Source
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AI summary
In a component (1) comprising a first component (pipe 2, tunnel segment 9) and a seal (3) made of an elastomer material, wherein the seal (3) has surface portions that are in contact with the component and surface portions that are exposed, it is proposed that the exposed surface portions of the seal (3) be provided at least partially with thermal insulation (8) in such a way that heating of the seal (3) caused by solar radiation striking the exposed surface portions is reduced.