“相变材料”以微胶囊的形式埋植于纤维之中，它可以通过从固相到液相的相互转化实现吸热和放热两种功能的转变。当其从液相转变为团相时，它吸收热量；相反，则放出热量。原理同在一杯水旁放置一块冰以期达到“冰镇”的效果一样。美国现有两家公司成功地采用这一技术生产出一? “Phase change material” in the form of microcapsules embedded in the fiber, which can be achieved by the solid phase to the liquid phase of mutual transformation of endothermic and exothermic two functional changes. When it changes from the liquid phase to the bulk phase, it absorbs heat; instead, it emits heat. The same principle with a cup of water placed in a piece of ice in order to achieve the “ice” effect. Two existing US companies successfully using this technology to produce a?