Insulated Electric Wire Coating for Slipperiness Without Peeling
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Solution Overview
Problem
Conventional enameled wires lack sufficient slipperiness and adhesion strength, especially when repeatedly bent or used in fine tubes, leading to potential peeling of the outermost lubrication layer.
Innovation Solution
An insulated electric wire with a double-layer insulation coating comprising a fluorine-based lubricant layer as the outermost layer and an enamel insulation layer with fluorine-based fine particles as the inner layer, enhancing slipperiness and adhesion strength through the use of fluorinated resin and fine particles like polytetrafluoroethylene (PTFE) or perfluoroalkoxyalkane (PFA).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an outermost layer with high solid lubrication is formed to improve slipperiness, then slipperiness is improved, but adhesion strength decreases causing the outermost layer to be easily peeled off
Solution Approach 1:
The invention uses a composite structure with an inner enamel insulation layer and an outer lubricant layer made of different materials. The enamel layer provides strong adhesion to the conductor, while the lubricant layer (containing PTFE, PFA, or other fluorine-based fine particles) provides high slipperiness. This composite material approach allows both adhesion strength and slipperiness to coexist without compromising either property.
2Ease of operation
If a lubricant layer is added to improve slipperiness, then slipperiness is improved, but device complexity increases
Solution Approach 1:
The invention extracts the lubrication function from the enamel insulation layer by adding a separate lubricant layer. This allows the enamel layer to focus on providing electrical insulation and adhesion, while the lubricant layer (containing fluorine-based fine particles)专门 provides slipperiness. The separation of functions simplifies the design logic even though it adds a layer, as each layer has a clear, dedicated purpose.
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 provides an insulated electric wire with high slipperiness and a strong insulation coating layer, preventing peeling and maintaining performance even in applications involving repeated bending and tight spaces, such as catheter tubes.
Implementation Method 1
a lubricant layer including fluorine-based fine particles as a lubricant as an outermost layer
Implementation Method 2
forming the lubricant layer by adhering a dispersion liquid, including the fluorine-based fine particles dispersed into a liquid dispersion medium, onto an outer periphery of the enamel insulation layer
Data Source
AI summary
An insulated electric wire is provided with a metal conductor, and an insulation coating layer covering an outer periphery of the metal conductor. The insulation coating layer includes a lubricant layer including fluorine-based fine particles as a lubricant as an outermost layer, and an enamel insulation layer including fluorine-based fine particles as an inner layer with respect to the lubricant layer.