中空木棉相变调温面料的制备及热学性能

Preparation of hollow kapok phase change temperature-regulating fabric and its thermal properties

利用木棉纤维中空度高的特点,以木棉中腔作为相变微胶囊的功能载体,通过改变淡碱预处理并微胶囊浸渍工艺处理木棉/棉混纺纱线,将相变微胶囊填充到木棉纤维内部并使其附着在纤维表面和纤维间隙。设置了4个单因素变量,包括微胶囊质量分数、黏合剂质量分数、浸渍温度和烘干温度,将制备的调温纱线织成面料,测试瞬时最大热流量Qmax值,来探究不同变量对面料调温性能的影响。最后得出制备木棉相变调温面料最优工艺为:微胶囊质量分数25%、黏合剂质量分数7%、浸渍温度25℃、烘干温度100℃。测试结果表明,制备的木棉相变调温面料具有调温功能并耐水洗,在循环水洗10次后仍保持较好的相变调温效果。

Taking the advantage of the high cavity of kapok fiber, the cavity of kapok is used as the function carrier of the phase change microcapsule, and the kapok/cotton blended yarn is treated by regulating the light alkali pretreatment and microcapsule impregnation process. The phase change microcapsule is filled into the kapok fiber and attached to the fiber surface and fiber gap. Four single factor variables are set, including the mass fraction of microcapsule, the mass fraction of adhesive, the impregnation temperature and the drying temperature. The prepared temperature-regulating yarn is woven into the fabric, and the maximum instantaneous heat flow Qmax value is tested by the fabric cool sense tester to explore the influence of different variables on the temperature-regulating performance of the fabric. Finally, it is concluded that the optimum process for the preparation of kapok PCM yarn is as follows: the mass fraction of microcapsule is 25%, the mass fraction of adhesive is 7%, the impregnation temperature is 25 ℃, and the drying temperature is 100 ℃. The test results show that the kapok phase change temperature-regulating fabric has the temperature-regulating function and good water resistance, as well as good durability of phase-change temperature regulating after washing for 10 times.