Department

Materials Engineering Department

Degree Name

BS in Materials Engineering

Date

6-2017

Advisor(s)

Linda Vanasupa

Abstract/Summary

This project investigated the viability of screen printing stretchable silver conductive paste directly onto fabric and how the resistance changed under cyclic mechanical loading. The paste tested was DuPont™ PE873 stretchable silver conductive paste, which forms a stretchable conductive path by suspending silver flakes in elastomer that can be elastically strained along with the underlying substrate. The silver pastes were printed directly onto two different high-density synthetic fabrics of different weaves. Other samples were prepared by first printing a base layer between the silver paste and the fabric. One base layer was a solvent-based dielectric (DuPont™ ME776) and a stretchable carbon conductor (DuPont™ PE671). This project determined that printing onto either base layer had a significantly smaller change in resistance under cyclic tensile tests than printing onto the fabric directly. Bend tests also revealed the possibility that the rate of change of strain had a higher impact on the change in resistance than the strain itself.

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