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Stretchable Strain Sensors Fabricated by Screen Printing of Silver Paste on the Surface Modified Transparent Elastomeric Polyurethane Films
Department of Graphic Arts Information Engineering, Pukyong Natioinal University, Busan, Korea
Department of Graphic Arts Information Engineering, Pukyong Natioinal University, Busan, Korea
Department of Graphic Arts Information Engineering, Pukyong Natioinal University, Busan, Korea
School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
Screen Finetech Solutions Co., Ltd., Kyoto, Japan
FP Co., Ltd., Busan, Korea
School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
Department of Graphic Arts Information Engineering, Pukyong Natioinal University, Busan, Korea
- 1 Department of Graphic Arts Information Engineering, Pukyong Natioinal University, Busan, Korea
- 2 Department of Graphic Arts Information Engineering, Pukyong Natioinal University, Busan, Korea
- 3 Department of Graphic Arts Information Engineering, Pukyong Natioinal University, Busan, Korea
- 4 School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
- 5 Screen Finetech Solutions Co., Ltd., Kyoto, Japan
- 6 FP Co., Ltd., Busan, Korea
- 7 School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
- 8 Department of Graphic Arts Information Engineering, Pukyong Natioinal University, Busan, Korea
Materials Sciences and Applications·Volume 09 (2018)·Pages 1008–1020·Published 30 November 2018·DOI10.4236/msa.2018.913073
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Abstract
Strain sensors for human-motion detection must offer high stretchability, high sensitivity, fast response, and high recovery speed. In this study, we choose silver paste as a sensing material and use a screen printing method to fabricate the strain sensor based upon an electrical-resistance mechanism. After curing elastomeric polyurethane film with a thickness of 150 μm on PET film, the polyester resin mixed with blocked isocyanate curing agent was coated as a masking layer to reduce the film’s stickiness. The effect of the polyester masking layer upon the silver paste screen printing process was examined using a rolling-ball-tack test, TGA analysis of polyester resins, and cured silver-electrode films. The cost-effective strain sensor fabricated by using silver paste and screen printing processes on the stretchable-polyurethane-substrate film showed high sensitivity and fast response in a strain range of up to 100%.
KeywordsStretchable Strain SensorScreen PrintingSilver Paste
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