T/SZJL 12-2024 Determination of density for carbon nanotube fibers and fiber bundles

Scope

Main technical content: Carbon nanotube fibers are a new type of nano-carbon fiber material, which possess excellent properties such as high strength, high toughness, and high electrical conductivity. The density of carbon nanotube fibers, as a basic parameter, is a key physical quantity for measuring their mechanical, electrical, and thermal performance, and is also a key parameter for comparing them with other high-performance fibers. However, as a new type of high-performance fiber material, there are significant differences in structure and assembly form compared with other fiber materials. Therefore, the existing standards for density of natural fibers, chemical fibers, and carbon fibers are not applicable to carbon nanotube fibers. Moreover, the testing methods used by various research units in the testing process are not uniform, and the obtained results cannot be compared under a unified standard. Based on this, this testing method specifies the testing methods for the density of carbon nanotube fibers and filament bundles according to 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 selection, size, testing equipment, and calculation of testing results. It forms a unified testing standard for the density of carbon nanotube fibers and filament bundles, providing support for the application of carbon nanotube fibers as high-performance fibers in related fields.

Development Information

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