T/SZJL 8-2024 Active

Main technical content: Carbon nanotube fibers are a new type of nano-carbon fiber material. The carbon nanotube fiber strands are fiber bundles made by combining and fusing carbon nanotube fibers, which have excellent characteristics such as high strength, high toughness, and high conductivity. Electrical conductivity is one of the core parameters for evaluating the performance of carbon nanotube fibers, and it directly affects the application of carbon nanotube fiber materials in electromagnetic shielding and lightweight wires. However, as a new type of high-performance fiber material, carbon nanotube fibers/strands differ from traditional wire materials in both structure and performance, and their electrical conductivity cannot follow the current testing standards for wires. The testing methods used by various research units for sample electrical conductivity are not uniform, and the electrical performance of the fibers cannot be compared under a unified standard. This testing method specifies the conductivity testing method for carbon nanotube fibers/strands based on the commonly recognized and commonly used testing methods in this field, proposes a reasonable, high-precision, and relatively simple testing method, and standardizes aspects such as sample preparation methods, sample sizes, testing devices, and calculation of test results. It forms a unified standard for the electrical conductivity testing of carbon nanotube fibers/strands, providing support for the standardized and rapid development of related fields.