Preparation and Properties of Cool-Feeling PA6 Fiber

In order to increase comfort of fabric, the development of fiber with the function of cool-feeling has been become the hotspot of chemical fiber industry. The cool-feeling fibers were prepared in this paper. The nano bowlder powder, aluminum nitride (AlN) powder, silicon carbide (SiC) powder were used as the cooling function powder, and the powders were modified by silane coupling agent 3-Aminopropyltriethoxysilane(KH-550). Nylon 6 (PA6) fibers with cooling function were prepared by melt blending method and melt spinning method. Further more, the properties of cool-feeling PA6 chip, fiber and fabric were characterized. The results show that the particle size of the powders become smaller and the distribution become narrower, the scale mainly distribute from 400 to 600 nm after the surface modification by KH-550. The results of thermal conductivity test and fabric contact cold test show that, the thermal conductivity of PA6 composite fiber reaches maximum with the value of 1.73 W/(m/K) when modified by AlN powder and bowlder powder. And the corresponding Q-max value of the fabric up to 0.162 J/cm² s demonstrates that the cooling effect of composite fiber reach optimum.