Silver-Plated Nylon Yarn for High-Voltage Cable Maintenance
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Solution Overview
Problem
Existing protective garments for high-voltage cable maintenance lack a combination of high electrical conductivity, flexibility, and comfort, with known yarns exhibiting high electrical resistance, requiring activation and causing rigidity and discomfort.
Innovation Solution
A conductive textile yarn comprising a core of nylon with a silver layer and a meta-aramide thread, providing both electrical conductivity and flame resistance, allowing for comfortable and safe operation on high-voltage cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steel wire is used to provide electrical conductivity, then electrical shielding is achieved, but electrical resistance remains high and garments require activation
Solution Approach 1:
The patent changes the material parameter from steel wire to silver-plated nylon filament, which fundamentally alters the electrical resistance characteristic. Silver has much lower electrical resistance than steel, and the plating process creates a continuous conductive path that maintains low resistance without requiring activation. This parameter change resolves the contradiction by providing both high conductivity and ease of use.
Solution Approach 2:
The invention uses a composite structure combining nylon core with silver plating. The nylon provides mechanical strength and flexibility while the silver layer provides excellent electrical conductivity. This composite approach allows the garment to achieve low electrical resistance without the rigidity and activation requirements of pure metal wires.
2Reliability
If steel wire is used to provide electrical conductivity, then shielding properties are achieved, but garment rigidity increases causing discomfort
Solution Approach 1:
The patent employs a composite material system where silver-plated nylon filaments are woven into the fabric. The nylon core maintains flexibility and comfort similar to conventional textile garments, while the silver plating provides the necessary electrical conductivity for shielding. This composite structure eliminates the rigidity problem of pure steel wire while maintaining shielding effectiveness.
Solution Approach 2:
The conductive property is applied locally through silver plating only on the surface of the nylon filaments, rather than using bulk metal wire throughout the entire garment structure. This localized application of conductivity maintains the overall textile flexibility and comfort while providing sufficient electrical shielding where needed.
3Ease of operation
If silver-plated nylon filament is used, then electrical conductivity and flexibility are improved, but flame resistance must be maintained
Solution Approach 1:
The patent uses a composite structure where silver-plated nylon filaments are woven with meta-aramid threads. The meta-aramid is a high-performance synthetic fiber known for its excellent flame resistance and thermal stability. This composite textile structure combines the flexibility and conductivity of silver-plated nylon with the fire protection of meta-aramid, resolving the contradiction between flexibility and fire resistance.
Solution Approach 2:
The meta-aramid threads act as an intermediary protective element within the fabric structure. They provide a flame-resistant matrix that protects the silver-plated nylon filaments while allowing the overall fabric to maintain flexibility and electrical conductivity properties. The meta-aramid mediates between the conductive elements and the fire hazard.
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 yarn achieves a balance of high electrical conductivity, flexibility, and comfort, reducing the need for activation and improving operator safety during high-voltage cable maintenance.
Implementation Method 1
a first element (2) which is electrically conductive... the first element (2) is a conductive filament (4), preferably comprising a core (5) covered with a layer (6) of conductive metal
Implementation Method 2
a second element (3), distinct from the first element (2), which is provided with good resistance to fire... the thread (7) is made of polyaramide, and preferably meta-polyaramide
Data Source
AI summary
The present invention relates to an electrically conductive textile yarn for production of protective garments, comprising a first element which is made electrically conductive by means of a layer of silver, and a second element which is different from the said first element, and is provided with good resistance to fire; the first element can be in the form of filaments or fibers. The present invention also relates to a garment produced by means of a yarn of this type and to a method for production of the yarn itself.