POLYMER COMPOSITE COMPRISING THREE-DIMENSIONAL CARBON NANOTUBE NETWORKS, METHOD FOR PREPARING THE POLYMER COMPOSITE AND STRAIN SENSOR USING THE POLYMER COMPOSITE

摘要

A polymer composite is provided. The polymer composite comprises carbon nanotubes and a polymer. The carbon nanotubes grow in horizontal and vertical directions to form three-dimensional networks. The three-dimensional carbon nanotube networks are present on the surface of the polymer or are embedded in the polymer. No impurities are present between the carbon nanotubes because the three-dimensional network structure is formed simultaneously when the carbon nanotubes are synthesized. The absence of impurities ensures a very good and uniform electrical connection between the carbon nanotubes. Further provided is a strain sensor using the polymer composite. The strain sensor has the advantages of high signal reproducibility, good stability, broad spectrum sensing characteristics, and very fast and accurate response and recovery.