The Development of Environmentally Responsive Smart Textile – Temperature Adaptive Smart Textile

Most of the time, general functional textiles can only passively provide one-way functions such as heat and cool (e.g., Generating-heat apparel and instantaneous cool sensation apparel) which cannot meet the wearers' needs for dynamic adjustments of human body under extreme weather or temperature change (such as temperature difference between indoors and outdoors during winter seasons or metabolic difference between intensive exercise and short break). With a higher expectation for functional and lightweights textiles, consumers hope that textiles can dynamically respond to environment and metabolic changes to improve the wearer's comfort and safety. Additionally, flexible and streamlined equipment is also developed to increase the consumers' demands for the second generation of functional textiles (especially majored in temperature/humidity responsive smart textiles).

From a macroscopic perspective, environmentally responsive smart textiles for apparel used are largely concentrated on Temperature. Adaptive material and Moisture Adaptive materials. In this article, we introduce the Temperature. Adaptive smart textiles developed by the manufacturer HeiQ and Taiwan manufacturer Fu Hsun Fiber as follows.

New Applications of Permeable and Waterproof Textiles By Domestic and Foreign Manufacturers

A. HeiQ: Smart Temp Activated Cooling – finish treatment of Temperature. Adaptive Smart Textiles

(I) The First Generation of Smart Temp: creating continuous cooling with water vapor permeability.

By Adaptive AC-03, HeiQ Smart Temp is the first generation of the Temperature. Adaptive smart textiles that focuses on continuous cooling. When the body temperature rises, the material becomes hydrophobic and shrinks to form a huge capillary structure that not only accelerates the diffusion of sweat but also speeds up the permeability of water vapor to create a continuous cooling effect. When the body or ambient temperature drops, the material becomes hydrophilic and swells to form a small capillary structure that not only decelerates the diffusion of sweat but also slows down the permeability of water vapor. As of today, HeiQ Smart Temp has been applied to hundreds of millions of clothing of over 50 brands (such as Dickies, Hanes, etc.) around the world.

(II) The Second Generation of Smart Temp Activated Cooling: creating instant cooling with "melting point mechanism"

This year (2018), HeiQ further introduces the new Temperature. Adaptive smart textiles with Adaptive AC-06 which is added the hydro-functional polymer to generate a dynamic adjustment mechanism for "PCM-Phase Change Material". When the wearer's skin temperature exceeds the range between 28°C and 32°C, an instantaneous cool effect will be created through melting, which not only slows down the Thermal Adaptive of the body but also reduces the accumulation of the sweat to improve overall cooling efficiency. According to the test results, clothing that uses Adaptive AC-06 fabric can reduce skin temperature by 1.5°C to 2.5°C so that the athlete’s body temperature is maintained at a comfortable range to improve exercise performance. Additionally, the material can maintain a 100% cooling function after 40 times of washing.

Upgraded from Smart Temp, HeiQ Smart Temp Activated Cooling is the Temperature. Adaptive smart textiles to meet the wearers' needs for instantaneous cool and long-lasting cooling textiles launched by HeiQ Switzerland this year (2018) .The combination of HeiQ Adaptive AC-03 and -06 opens up new possibilities for the cooling mechanism of the HeiQ Smart Temp product series by providing wearers with instantaneous cool and long-lasting cooling respectively or at the same time. With two cooling mechanisms working independently of each other, one or two effects can be added to achieve the best cooling effects depending on each fabric type and end-product application scenario.

B. Domestic Manufacturers: Fu Hsun Fiber and Taiwan Textile Research Institute work together to develop Temperature. Adaptive smart textiles

Source: 2018 Taipei Innovative Textile Application Show
Temperature Adaptive Smart Textile of Fu Hsun Fiber

Unlike the one-way moisture wicking technology of general functional fabrics, Fu Hsun Fiber introduces Temperature. Adaptive smart textiles with two-way adjustments. Through technical cooperation with Taiwan Textile Research Institute, Fu Hsun Fiber uses eco-friendly resins as an initiator so that the textiles can make dynamic adjustments to moisture treatments (hydrophobic and hydrophilic) with the rise and fall of body temperature and ambient temperature. When the temperature is high (above 35°C), the textile will increase the