[1PS-220]
우수논문발표상 응모자Stretchable and Transparent PVC-gel Dielectric Heaters with High Dissipation Factor for Wearable Thermotherapy and Thermal Sensing
발표자최승은 (한국기술교육대학교)
연구책임자배진우 (한국기술교육대학교)
Abstract
Multifunctional wearable heaters are essential for smart healthcare and soft electronics, requiring high transparency, stretchability, and low-voltage operation. This study introduces a dual-plasticizer strategy using dibutyl adipate (DBA) as the primary plasticizer and propylene carbonate (PC) with ethylene carbonate (EC) as high-dielectric secondary plasticizers in polyvinyl chloride (PVC). The resulting PVC-gel achieves a high dielectric loss (>3 × 103) and dissipation factor (~295), enabling efficient dielectric heating. The heater shows excellent stretchability (300%) and optical transparency (>90%), reaching 60 °C at 350 V with a fast heating rate (0.76 °C s-1) and high power efficiency (1.015 W cm-2). It offers uniform, stable heating for 20,000 s, even under strain, supporting therapeutic use and thermal sensing. A gesture-recognition system is also demonstrated, highlighting its potential for next-generation wearable electronics.