Conductive Thermosetting Elastomer for Flexible Electronics
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Solution Overview
Problem
Current thermosetting polymers lack the combination of high electrical conductivity and flexibility, as well as the ability to maintain conductivity under deformation, which is essential for various applications such as wearable electronics and lab-on-chip systems.
Innovation Solution
The development of electrically conductive, thermosetting elastomeric compositions comprising a non-conductive thermosetting base polymer, conductive particulate fillers, and conductive polymer additives, which are mixed homogeneously to achieve lower resistivity, higher flexibility, and improved micromoldability, allowing for the creation of flexible and conductive structures that can be stretched and molded into complex shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high concentrations of conductive particulate fillers are used to achieve electrical conductivity, then electrical conductivity is improved, but flexibility and micromoldability deteriorate
Solution Approach 1:
The patent uses a composite material system combining thermosetting polymer matrix with conductive particulate fillers (such as carbon black, metal particles, or conductive polymers). This composite approach allows the material to exhibit both electrical conductivity from the filler and flexibility from the polymer matrix, resolving the contradiction between conductivity and flexibility
Solution Approach 2:
The patent optimizes the concentration, size, shape, and distribution parameters of the conductive particulate fillers within the polymer matrix. By controlling these parameters, the material achieves sufficient electrical conductivity while maintaining flexibility and micromoldability, avoiding the need for excessive filler concentrations that would compromise mechanical properties
2Reliability
If high concentrations of conductive particulate fillers are used to achieve electrical conductivity, then electrical conductivity is improved, but the material complexity and processing difficulty increase
Solution Approach 1:
The patent optimizes filler concentration parameters to achieve the percolation threshold for electrical conductivity with minimal filler content. By carefully controlling particle size distribution and concentration, the material achieves desired conductivity with simplified composition and easier processing
Solution Approach 2:
The patent creates localized conductive pathways through the polymer matrix using dispersed particulate fillers. This local concentration of conductive elements achieves overall electrical conductivity without requiring uniform high filler concentrations throughout the entire material, thereby simplifying the overall material composition
3Adaptability or versatility
If thermosetting polymers are made flexible, then adaptability and micromoldability are improved, but electrical conductivity deteriorates
Solution Approach 1:
The patent creates a composite material where a flexible thermosetting polymer matrix is combined with conductive particulate fillers. The polymer matrix provides flexibility and micromoldability while the conductive fillers embedded within provide electrical conductivity, allowing both properties to coexist in the final material
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
These compositions exhibit low resistivity over a wide range of frequencies, maintain conductivity under significant deformation, and reduce the need for high particulate filler concentrations, resulting in lightweight, flexible, and conductive materials suitable for diverse applications including wearable electronics and microfluidic systems.
Implementation Method 1
electrically conductive, thermosetting elastomeric compositions comprising a non-conductive thermosetting base polymer, conductive particulate fillers, and conductive polymer additives
Data Source
AI summary
An electrically conductive, thermosetting elastomeric composition is provided. The composition may comprise: an initially substantially non-electrically conductive, thermosetting base polymer; a particulate filler comprising electrically conductive particles; and an electrically conductive polymer additive. The non-electrically conductive, thermosetting base polymer, the particulate filler and the electrically conductive polymer additive are mixed substantially macroscopically homogeneously.