Preparation and Application of Polymer

The properties and light-heating function of a knit prepared by the composite spinning of carbon nanotubes (CNTs) and an inorganic ceramic were examined. The CNTs and ceramic were mixed and polymerized in a master batch (MB) and the MB chip was then melt spun to prepare the CNT/ceramic-composite yarn (LH-Yn) and single-jersey knits (LH-Knit). The properties of the LH-Yn and LH-Knit were compared with those of the regular polyester yarn (PET-Yn) and polyester knit (PET-Knit). The contents of carbon in the CNTs by energy dispersive X-ray spectrometer, scanning electron microscopy, tensile and tear performance, thermal insulation, air permeability (AP), water vapor permeability (WVP), and far-infrared (FIR) emissivity were analyzed. The result showed that the surface temperature of the LH-Knit was much higher than that of the PET-Knit. The measured WVP, AP, and FIR emissivity were also slightly higher in the LH-Knit, but the difference was not significant