PEEK and TPU Radome Composite for Environmental Protection
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Solution Overview
Problem
Existing radomes fail to provide comprehensive protection for communication devices against harsh environmental conditions, including temperature extremes, chemical exposure, ultraviolet light, and impact, while maintaining transparency to electromagnetic signals and adhering to safety and flammability standards.
Innovation Solution
A radome design comprising a substrate made of polyether ether ketone (PEEK) with an outer layer of thermoplastic elastomer (TPU) that is over-molded onto the substrate, providing structural integrity and enhanced impact resistance, chemical compatibility, and compliance with various industry standards for temperature, chemical, and flammability requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a radome is constructed from a single material to simplify manufacturing, then ease of manufacture is improved, but the ability to provide comprehensive protection against multiple environmental hazards deteriorates
Solution Approach 1:
The radome is constructed as a composite structure with an inner layer made of PEEK material providing structural integrity and chemical resistance, and an outer layer made of TPU material providing impact resistance and environmental protection. This multi-material approach resolves the contradiction by combining materials with complementary properties to achieve comprehensive protection while maintaining manufacturability through overmolding processes.
2Strength
If a radome uses a rigid structure to maintain structural integrity, then strength is improved, but impact resistance deteriorates
Solution Approach 1:
The radome combines a rigid PEEK inner layer that maintains structural integrity with a flexible TPU outer layer that provides impact resistance. The rigid PEEK substrate provides dimensional stability and strength, while the elastomeric TPU coating absorbs impact energy, resolving the contradiction between structural strength and impact resistance.
Solution Approach 2:
Different regions of the radome have different material properties optimized for their specific functions. The inner layer is rigid for structural support, while the outer layer is elastomeric for impact protection. This local differentiation of material properties allows the radome to simultaneously achieve strength and impact resistance.
3Device complexity
If a radome uses a single-layer structure to reduce complexity, then device complexity is reduced, but the ability to meet multiple performance standards deteriorates
Solution Approach 1:
The radome employs a two-layer composite structure where each layer is optimized for specific performance requirements. The PEEK inner layer provides chemical resistance and structural stability, while the TPU outer layer provides impact resistance and environmental protection. This division of functional responsibilities across layers allows compliance with multiple safety and performance standards without excessive complexity.
Solution Approach 2:
The radome is segmented into functional layers with distinct roles. The inner PEEK layer handles structural and chemical resistance functions, while the outer TPU layer handles impact and environmental protection functions. This segmentation allows each layer to be optimized for its specific function, enabling compliance with multiple standards while keeping the overall design manageable.
Data Source
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AI summary
A radome comprise a substrate having a first material and an outer layer having a second material, which is positioned adjacent to the substrate. The first material of the radome can comprise a generally rigid polymeric material. The generally rigid polymeric material of the radome can comprise polyether ether ketone. The first material of the radome can further comprise a filler. The filler material of the radome can be selected from the group consisting of carbon black, talc, and glass, oxide. The second material of the radome can be an elastomeric material. The elastomeric material of the radome can comprises polyurethane. The elastomeric material of the radome can further comprises a material selected from the group consisting of 1,1' - (Ethane-1,2-diyl) bis [pentabromobenzene], carbon black, and antimony trioxide. A wireless communication device can comprise a body arranged to include communication equipment and a radome coupled to the body.