Crosslinked Fluoropolymer Layers for UV-Patterned Telecom Electronics
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Solution Overview
Problem
Perfluoropolymers have not been widely used in electronic telecommunications due to the lack of materials that can be crosslinked by actinic radiation, particularly UV radiation, and their mechanical properties are not fully utilized in place of polyimides.
Innovation Solution
Development of crosslinked fluoropolymer compositions with at least 80% perfluorinated monomers and cure sites such as nitrile, iodine, and bromine, which can be crosslinked using heat or actinic radiation, applied as layers in electronic telecommunications articles like integrated circuits, antennas, and optical fiber cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If perfluoropolymers are used in electronic telecommunications, then dielectric properties are improved, but crosslinking capability by actinic radiation is lacking
Solution Approach 1:
The patent modifies the chemical structure of perfluoropolymers by incorporating specific functional groups (carboxylic acid, hydroxyl, amine, isocyanate, isocyanurate, or melamine groups) that enable crosslinking reactions. This parameter change in molecular structure transforms the material from non-crosslinkable to crosslinkable while preserving its excellent dielectric properties, thus resolving the contradiction between dielectric performance and manufacturability through crosslinking.
2Strength
If crosslinked fluoropolymer compositions are developed, then mechanical properties are improved, but material complexity increases
Solution Approach 1:
The patent creates composite material systems by combining perfluoropolymer base materials with crosslinking agents containing specific functional groups. This composite approach allows the material to achieve enhanced mechanical properties through crosslinking while maintaining the inherent advantages of perfluoropolymers. The systematic selection of compatible functional groups ensures that the composite structure achieves synergistic effects without excessive 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 crosslinked fluoropolymer layers offer improved mechanical and dielectric properties, reducing dielectric constants and losses, making them suitable replacements for polyimides in various electronic telecommunications components.
Implementation Method 1
crosslinking the fluoropolymer by exposure to heat, actinic radiation, or a combination thereof
Implementation Method 2
selectively crosslinking portions of the fluoropolymer film by exposure to actinic radiation
Data Source
AI summary
Electronic telecommunication articles are described comprising a crosslinked fluoropolymer layer. In typical embodiments, the crosslinked fluoropolymer layer is a substrate, patterned (e.g. photoresist) layer, insulating layer, passivation layer, cladding, protective layer, or a combination thereof. Also describes are methods of making an electronic telecommunications article and method of forming a patterned fluoropolymer layer. The fluoropolymer preferably comprises at least 80, 85, or 90% by weight of polymerized units of perfluorinated monomers and cure sites selected from nitrile, iodine, bromine, and chlorine. Illustrative electronic communication articles include integrated circuits, printed circuit boards, antennas, and optical fiber cables. Fluoropolymer compositions are also described.