The working ability of carbon nanofibers in emergency situations is manifested in the following aspects:

Excellent mechanical properties: Carbon nanofibers are characterized by high strength and high modulus, which makes them exhibit excellent dynamic strength and impact resistance when subjected to high strain rate or ballistic impact

For example, the Peking University team successfully prepared a carbon nanotube fiber with a dynamic strength of up to 14GPa, far exceeding the performance of existing high-performance fibers

Impact damage resistance: In multi-scale composite materials, the addition of carbon nanofibers enhances the interface strength between fiber and matrix, improves the stress distribution in laminates, and has excellent mechanical properties such as impact damage resistance and delamination resistance

Nanocarbon fiber

Strain rate strengthening effect: With the increase of tensile speed, the toughness and brittleness failure mode of carbon nanofibers will change, showing a significant strain rate strengthening effect. Under high strain rate loading, the dynamic strength of the fiber reaches 14GPa, which is much higher than that of other high-performance fibers

Energy dissipation capacity: Under simulated ballistic impact loading, the specific energy dissipation power of the carbon nanofiber reaches (8.7±1.0) ×10^13mkg^-1s^-1, which is much higher than that of the traditional bulletproof fiber, which indicates that the fiber has application potential in the field of impact protection

Fire resistance and stability: The bio-based nanocarbon fiber fire sensor has excellent fire resistance, stability and flame sensitivity with a response time of 2 seconds, which is suitable for fire warning sensors

Self-powered fire prediction system: A self-powered fire prediction system based on nanoscale carbon fiber is proposed, which integrates sensing, power generation and energy storage functions and is suitable for energy supply and environmental monitoring in emergency situations