Temperature-adjustable fabrics are a new type of functional fabric currently on the market. They achieve temperature regulation through the thermal buffering effect formed by automatically storing or releasing heat. This fabric is the first choice for products such as ski wear, sportswear, and jackets. It can also be made into products such as bandages, boots, gloves, socks, and hats, or bedding such as bedspreads, sheets, and blankets.
In fact, temperature-adjustable fabrics can keep the temperature of the microclimate of the human body and clothing basically constant for a certain period of time when the ambient temperature changes suddenly, thereby reducing the heat stress of the human body and satisfying the human body’s comfort under extreme environmental conditions. need. In other words, this kind of fabric has the function of automatically adjusting the internal temperature of the fabric within a certain temperature range according to changes in the external environment temperature. For example, when the temperature of the external environment rises, it can store excess heat, so that the increase in the internal temperature of the fabric is relatively reduced; when the temperature of the external environment drops, it can release energy, so that the internal temperature of the fabric decreases relatively little, making clothing More comfortable than traditional fabrics.
The key to achieving the temperature-regulating function of temperature-adjustable fabrics is that the fabric uses a material that can undergo phase change. People usually add this material to the fabric to achieve the temperature-regulating function.
When making temperature-adjustable fabrics, most people start by making temperature-adjustable fibers. For example, some people are studying filling phase change materials into hollow fibers such as rayon and polypropylene, and using phase change hydrated salts to generate heat at room temperature. Melting and crystallizing to achieve the purpose of absorbing and releasing heat, thereby making fibers that can regulate temperature; later, some people made phase change materials into nearly nanometer-level capsules, mixed them in the spinning solution, and directly melted and spun them into fibers with phase change properties. Functional fibers. The temperature-adjustable fabric made by this method has better durability. The disadvantage is that the cost of raw materials is higher and the fabric is more expensive. There are also some people who use post-finishing methods to make temperature-regulating fabrics, adding the phase-change material polyethylene glycol (PEG) to the fabric in a cross-linked manner, so that the fabric will have good heat storage and temperature-regulating properties; there are also People are studying the manufacturing of temperature-adjustable fabrics by mixing a certain amount of heat-storage temperature-adjusting microcapsules and adhesives evenly, and then coating polyester-cotton and other fabrics. The price of temperature-adjustable fabrics made through post-finishing methods is relatively affordable, but the fabric’s temperature-adjustable durability is slightly poor, the fabric’s feel and style will be affected, and its breathability will be reduced.
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