Development and Performance Evaluation of Stretchable Silver Pastes for Screen Printing on Thermoplastic Polyurethane Films
Source abstract
Abstract
Efficient, stretchable wiring electrodes are achieved when the resistance change during expansion and contraction is minimal. Herein, we prepared silver pastes specifically designed for screen printing on thermoplastic polyurethane films; they exhibit minimal resistance changes. The pastes were prepared using silver particles with sizes of 2 and 7 μm as well as a mixture of 2 and 7 μm silver particles (50:50 wt%). These pastes were analyzed using methods such as rheological measurements, thermogravimetric analysis, printability tests, tensile and torsion tests, and light-emitting diode (LED) tests. The most promising results were obtained when exclusively using 2 μm silver flake particles. The pastes demonstrated a viscosity of 24,880 cps, a thixotropic index value of 2.82, excellent printability, and consistent resistance measurements even after 100% stretch, thus indicating exceptional tensile properties. Moreover, the pastes exhibited substantial stability, with no change in brightness after the attachment of seven LEDs at 20% tension.
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Research context
OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications · Nanomaterials and Printing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
ICT Device Packaging Research Center, Korea Electronics Technology Institute, 25, Saenari-ro, Bundang-gu, Seongnam-si 13509, Republic of Korea
Department of Semiconductor Engineering, Seoul National University of Science and Technology, 232, Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
Department of Nanotechnology Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Republic of Korea
Funding
National Science and Technology Research Council: Development of Ultra-Light/Ultra-Thin Electronic Device Manufacturing Technology with Free-Form Multifunctional Structure
References (28)
Show source-provided references
1. Development of epoxy based stretchable conductive adhesive
2. Kim, D.C., Shim, H.J., Lee, W., Koo, J.H., and Kim, D.-H. (2020). Material-Based Approaches for the Fabrication of Stretchable Electronics. Adv. Mater., 32.10.1002/adma.201902743 ↗
3. Qi, D., Zhang, K., Tian, G., Jiang, B., and Huang, Y. (2020). Stretchable Electronics Based on PDMS Substrates. Adv. Mater., 33.10.1002/adma.202003155 ↗
4. Advances in Screen Printing of Conductive Nanomaterials for Stretchable Electronics10.1021/acsomega.1c00638 ↗
5. Technical trend of strechable electrodes
6. Stretchable, Curvilinear Electronics Based on Inorganic Materials10.1002/adma.200902927 ↗
7. Ko, E.-H., Kim, H.-J., Lee, S.-M., Kim, T.-W., and Kim, H.-K. (2017). Stretchable Ag electrodes with mechanically tunable optical transmittance on wavy-patterned PDMS substrates. Sci. Rep., 7.10.1038/srep46739 ↗
8. Development and Characteristics of Multipurpose Transparent Polyurethane Film10.1166/jnn.2021.19445 ↗
9. Recent advances in wrinkle-based dry adhesion10.1039/c4sm00027g ↗
10. Jeong, G.S., Baek, D.-H., Jung, H.C., Song, J.H., Moon, J.H., Hong, S.W., Kim, I.Y., and Lee, S.-H. (2012). Solderable and electroplatable flexible electronic circuit on a porous stretchable elastomer. Nat. Commun., 3.10.1038/ncomms1980 ↗
11. Highly Stretchable, Self-Healable Elastomers from Hydrogen-Bonded Interpolymer Complex (HIPC) and Their Use as Sensitive, Stable Electric Skin10.1021/acsomega.8b01456 ↗
12. Stretchable Conductive Polypyrrole/Polyurethane (PPy/PU) Strain Sensor with Netlike Microcracks for Human Breath Detection10.1021/am4053305 ↗
13. Graphene-Based Flexible and Stretchable Electronics10.1002/adma.201504245 ↗
14. Wang, Y., Zhu, C., Pfattner, R., Yan, H., Jin, L., Chen, S., Molina-Lopez, F., Lissel, F., Liu, J., and Rabiah, N.I. (2017). A highly stretchable, transparent, and conductive polymer. Sci. Adv., 3.10.1126/sciadv.1602076 ↗
15. Cai, L., and Wang, C. (2015). Carbon Nanotube Flexible and Stretchable Electronics. Nanoscale Res. Lett., 10.10.1186/s11671-015-1013-1 ↗
16. Effects of Binder and Substrate Materials on the Performance and Reliability of Stretchable Nanocomposite Strain Sensors10.1166/jnn.2021.19133 ↗
17. Highly Stretchable Strain Sensor with a High and Broad Sensitivity Composed of Carbon Nanotube and Ecoflex Composite10.3365/KJMM.2023.61.7.500 ↗
18. Liu, J., Yi, Y., Zhou, Y., and Cai, H. (2016). Highly Stretchable and Flexible Graphene/ITO Hybrid Transparent Electrode. Nanoscale Res. Lett., 11.10.1186/s11671-016-1323-y ↗
19. Trung, T.Q., and Lee, N.-E. (2017). Recent Progress on Stretchable Electronic Devices with Intrinsically Stretchable Components. Adv. Mater., 29.10.1002/adma.201603167 ↗
20. Separation of Semiconducting Carbon Nanotubes for Flexible and Stretchable Electronics Using Polymer Removable Method10.1021/acs.accounts.7b00062 ↗
21. Stretchable Electronics: Materials Strategies and Devices10.1002/adma.200801788 ↗
22. Nam, H.M., Seo, D.M., Yun, H.D., Thangavel, G., Park, L.S., and Nam, S.Y. (2017). Transparent Conducting Film Fabricated by Metal Mesh Method with Ag and Cu@Ag Mixture Nanoparticle Pastes. Metals, 7.10.3390/met7050176 ↗
23. Sun, X., Yang, X., Zhang, J., Shang, B., Lyu, P., Zhang, C., Liu, X., and Xia, L. (2023). Fabrication of Silane-Grafted Cellulose Nanocrystals and Their Effects on the Structural, Thermal, Mechanical, and Hysteretic Behavior of Thermoplastic Polyurethane. Int. J. Mol. Sci., 24.10.3390/ijms24055036 ↗
24. Xu, Y.-X., and Juang, J.-Y. (2021). Measurement of Nonlinear Poisson’s Ratio of Thermoplastic Polyurethanes under Cyclic Softening Using 2D Digital Image Correlation. Polymers, 13.10.3390/polym13091498 ↗
25. He, Y., Li, W., Yang, G., Liu, H., Lu, J., Zheng, T., and Li, X. (2017). A Novel Method for Fabricating Wearable, Piezoresistive, and Pressure Sensors Based on Modified-Graphite/Polyurethane Composite Films. Materials, 10.10.3390/ma10070684 ↗
26. Wang, Z., Wang, D., Zhang, C., Chen, W., Meng, Q., Yuan, H., and Yang, S. (2023). A Fluorinated Polyimide Based Nano Silver Paste with High Thermal Resistance and Outstanding Thixotropic Performance. Polymers, 15.10.3390/polym15051150 ↗
27. Yüce, C., König, M., and Willenbacher, N. (2018). Rheology and Screen-Printing Performance of Model Silver Pastes for Metallization of Si-Solar Cells. Coatings, 8.10.3390/coatings8110406 ↗
28. Qi, X., Ha, H., Hwang, B., and Lim, S. (2020). Printability of the Screen-Printed Strain Sensor with Carbon Black/Silver Paste for Sensitive Wearable Electronics. Appl. Sci., 10.10.3390/app10196983 ↗