A team of researchers at The Hong Kong Polytechnic University (PolyU) has developed innovative clothing with automatic thermal adaptation designed to protect factory workers and others in extreme heat environments. This "first-of-its-kind" thermally-insulated and breathable soft robotic apparel can automatically adjust to changing ambient temperatures, ensuring safety and comfort in high-heat conditions.

Led by Dr. Dahua Shou, Limin Endowed Young Scholar in Advanced Textiles Technologies and Associate Professor at PolyU's School of Fashion and Textiles, the research has been published in the international journal Advanced Science. The clothing employs a dynamic, adaptive thermal management system using soft robotic textiles that respond to temperature changes, enhancing protection and comfort.

The apparel integrates soft actuators, resembling a human exoskeleton, filled with a non-toxic, non-flammable fluid. When temperatures rise, the fluid vaporizes, expanding the actuators and thickening the textile layers, effectively increasing thermal resistance and keeping inner surface temperatures at least 10°C cooler than conventional heat-resistant clothing, even at outer surface temperatures of 120°C.

Dr. Shou explains that this soft robotic clothing offers versatile protection across different climates, seasons, and working conditions, ensuring consistent thermal comfort. The innovation has potential applications beyond industrial settings, including activewear, winter jackets, healthcare apparel, and sustainable insulation for construction.