Thermoplastic Polyphenylene Ether Cable Insulation
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Solution Overview
Problem
Current vehicular cable insulation materials, such as PVC, pose environmental and health concerns due to halogen content and heavy metal usage, and lack cost-effective alternatives that provide high temperature resistance, toughness, and weight reduction while meeting regulatory standards like SAE J2192 and ISO 6722.
Innovation Solution
A non-halogenated, heavy metal-free vehicular cable insulation using a thermoplastic polyphenylene ether composition around a copper-based metal wire, which is processed to meet ISO 6722 standards, offering improved abrasion resistance, flame resistance, and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If PVC is used for cable insulation, then cost and processability are improved, but environmental harm and health concerns worsen due to halogen content
Solution Approach 1:
The patent changes the chemical composition parameters by replacing PVC with thermoplastic polyphenylene ether, fundamentally altering the material's chemical structure to eliminate halogen content while maintaining manufacturing processability through thermoplastic processing methods
Solution Approach 2:
The patent uses composite material formulation by combining thermoplastic polyphenylene ether with specific additives and compounds to achieve the desired balance of environmental compliance, mechanical properties, and processability in the cable insulation material
2Ease of manufacture
If PVC is used for cable insulation, then cost efficiency is improved, but environmental sustainability worsens
Solution Approach 1:
The patent changes the material composition parameters to use thermoplastic polyphenylene ether, which eliminates halogen content and heavy metals, thereby improving environmental sustainability while maintaining cost-effectiveness through competitive raw material selection and processing efficiency
3Object-affected harmful factors
If alternative materials to PVC are used, then environmental compliance is improved, but high temperature resistance and toughness worsen
Solution Approach 1:
The patent selects thermoplastic polyphenylene ether which has inherent high temperature resistance properties, and adjusts formulation parameters including additive packages to enhance thermal stability and maintain mechanical properties at elevated temperatures while meeting environmental compliance
Solution Approach 2:
The patent formulates a composite material system combining thermoplastic polyphenylene ether with specific reinforcing compounds and stabilizers to achieve both environmental compliance and high temperature resistance, toughness through synergistic material interactions
4Object-affected harmful factors
If alternative materials to PVC are used, then environmental compliance is improved, but weight reduction worsens
Solution Approach 1:
The patent changes the material density parameter by selecting thermoplastic polyphenylene ether which has lower density compared to PVC, achieving weight reduction while maintaining environmental compliance through halogen-free and heavy metal-free composition
Data Source
AI summary
Described is a vehicular harness comprising a plurality of insulated non-halogenated, heavy metal free vehicular cables, each comprising an inner core of a copper based metal wire having a thickness area of at least about 0.1 mm, an outer insulation, covering the length of the inner core, comprised of a thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto, the insulated cable capable of meeting the testing standard ISO 6722, and a tape comprised of the thermoplastic polyphenylene ether composition wrapped around the plurality of cables to hold the cables together. Also described is a tape having a plastic PPE layer with an adhesive on the bottom and a pealable layer.