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"High-tech" can be said to evaluate the popularity of thermal underwear market this year, the key words, with the fashion trend of clothing and the pursuit of comfort, new thermal underwear more and more people of all ages, functional fabrics, heating fabric name Dazzling, foggy flowers, this paper on the status of shallow discussion. Insulation fabric - one-way temperature control insulation material. Such insulation materials through the absorption of energy from external energy and then the form of heat radiation to the human body, so as to achieve insulation warming and reduce the thickness of clothing made to improve the appearance and comfort. In the ambient temperature is below, especially far below body temperature, with better insulation properties than conventional fibers. According to different heating mechanism can be divided into metal cotton - the space cotton shirt appeared in the 80's is the use of metal cotton, electric fiber heating blanket products, chemical reaction heating fiber, sunshine fiber heating, far infrared fiber and heat absorption fiber, Common thermal underwear on the market materials are usually the last two materials. 1, far-infrared fiber. Far-infrared fiber absorbs the heat emitted by the human body and radiates far-infrared rays of a certain wavelength range to the human body (including the most easily absorbed by the human body in the 7-14um wavelength band), which can make the human body produce warm correspondingly and promote blood circulation. Due to reflect the return of some of the body's infrared radiation, reducing the body heat loss, making the insulation properties of such fiber fabrics better. Far-infrared fibers were successfully developed in Japan in the late 1980s, with Japan's Uniqe and Toray earliest developed. Subsequently, Japan's Teijin, Asahi Kasei and Zhongfang other companies also started the development of far-infrared fiber fabrics. 90 years, Tianjin Textile Institute successfully developed far-infrared polypropylene staple fiber. 2. Hygroscopic fever fiber. Fibers absorb moisture, fiber molecules in the hydrophilic groups and water molecules combine to reduce the kinetic energy of water molecules, converted to heat is released. Most commonly used textile fibers moisture absorption heat performance, under normal circumstances, the moisture absorption and moisture regains the moisture content of the fiber has a great relationship, the fiber moisture regain is large, such as wool, modal fiber moisture absorption is better, Acrylic, polyester moisture less effective fever.
January 15, 2019