Carbon nanotubes fiber, 1000-1200 MPa

Catalog	ACMA00017099
Density	0.5-0.8 g/cm3
Diameter	5-12 µm
Electrical Conductivity	5×10⁴-7×10⁴ S/m
Elongation At Break	2-3.5%
Length	1-20 m
Tensile Modulus	50-100 GPa
Tensile Strength	1000-1200 MPa

Case Study

Several Effective Strategies to Strengthen Carbon Nanotube Fibers

Zhang, Xiaohua, et al. Advanced Materials 32.5 (2020): 1902028.

Strengthening the strength of carbon nanotube fibers is a long-term topic. To date, densification and crosslinking processes are the most effective strategies for strengthening carbon nanotube fibers, including solvent densification, mechanical densification, polymer infiltration, polymer infiltration and crosslinking, carbon (and other particles) infiltration, surface modification, and covalent crosslinking. The following are typical research cases of these treatments.
Solutions:
· Polar Solvent Densification: Ethylene glycol treatment boosts strength to 1.45 GPa (22% improvement vs. ethanol); Optimized capillary forces realign nanotube bundles.
· Polymer Crosslinking: Thermosetting resin (BMI) infiltration achieves 2.38 GPa strength; Mussel-inspired polydopamine crosslinking enables 2.2 GPa+ strength; Pyrolyzed PDA creates conductive π-π networks (4.04 GPa strength).
· Mechanical Optimization: Roller pressing creates carbon fiber-like density; Achieves record 9.6 GPa average tensile strength; Maintains 130 GPa modulus with 8% elongation.
· Covalent Bond Engineering: Incandescent Tension Annealing Process (ITAP) at 2000°C; Creates sp³ inter-tube bonds in vacuum environment; Enhances acid resistance (survives chlorosulfonic acid).
Outcome: These enhanced carbon nanotube fibers have achieved disruptive applications that combine strength, conductivity, and corrosion resistance.

Solar-Powered Textiles Enabled by Carbon Nanotube Fiber Electrodes

Zhang, Zhitao, et al. Advanced Energy Materials 4.11 (2014).

Challenge: Conventional wire-shaped solar cells suffer from rigid metal electrodes, electrolyte leakage, low efficiency (<0.15%), and incompatibility with textile manufacturing.
Solution:
The design of the wire-shaped polymer solar cell (PSC) is composed of a titanium wire cathode and an aligned multiwalled carbon nanotube (MWCNT) fiber anode. The typical fabrication approach of the PSCs consisted of modifying the Ti wire by electrochemically anodizing it to grow aligned titania nanotubes on the surface, and subsequently coating it with a layer of titania nanoparticles. The two polymer layers poly(3-hexylthiophene): phenylC61-butyric acid methyl ester (P3HT:PCBM) and poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) were then dip-coated on the modified Ti wire. The Ti wire was then wrapped with the aligned MWCNT fiber to assemble the wire-shaped PSC.
Key Results:
The titania nanoparticles were shown to improve both the adsorption of photoactive materials and charge transport, leading to a 36% increase in energy conversion efficiency compared to a wire-shaped perovskite solar cell (PSC) without titania nanoparticles under identical conditions. The use of aligned carbon nanotube fibers contributed to the resulting PSC's high flexibility and stability. These miniature PSC wires were subsequently woven into flexible textiles that demonstrated excellent performance. For example, these lightweight and deformable PSC textiles were shown to effectively power portable electronic devices, aligning with current trends in modern electronics.