Nano-zirconium carbide（vedio） used in fiber: different zirconium carbide silicon carbide powder content and the way of addition to the fiber near-infrared absorption performance, when the fiber zirconium carbide or silicon carbide content of 4% by weight, the fiber near infrared absorption Preferably, the near-infrared absorption effect of adding zirconium carbide and silicon carbide in the shell of the fiber is superior to that added to the core layer.