Asahi Kasei collaborates on continuous carbon fiber reclamation development
Inexpensive, closed-loop recycling system employs electrolyzed sulfuric acid to cleanly separate the fiber from the resin.
Asahi Kasei (Tokyo, Japan), a diversified multinational company, together with partners at the National Institute of Technology, Kitakyushu College (Kyushu) and Tokyo University of Science, has developed a new technology for recycling carbon fiber-reinforced plastic (CFRP) and carbon fiber-reinforced thermoplastics (CFRTP) used in automotive applications.
Some technologies for recycling carbon fibers by chopping and reapplying them often results in low-quality, less-durable products that are insufficient for high-performance applications. Asahi Kasei’s recycling method, however, involves electrolyzed sulfuric acid solution, which is reported to properly maintain the continuous carbon fiber’s original strength while fully decomposing the resin it was embedded in. Ultimately, the continuous fibers can be inexpensively extracted at a vehicle’s end of life (EOL) and repurposed. (See Vartega and DEECOM for similar results with continuous carbon fiber reclamation.)
In addition, Asahi Kasei is developing a CFRTP unidirectional (UD) tape that uses recycled continuous carbon fiber and the company’s Leona polyamide
resin. Boasting a higher strength than metal, the company says the CFRTP-UD tape can be applied to automotive frames and bodies, further enabling the recycling of EOL vehicle parts.
Moving forward, Asahi Kasei says it will perform demonstrations and develop the business, aiming for practical application around 2030.
Related Content
-
Thermoplastic composites welding advances for more sustainable airframes
Multiple demonstrators help various welding technologies approach TRL 6 in the quest for lighter weight, lower cost.
-
Cryo-compressed hydrogen, the best solution for storage and refueling stations?
Cryomotive’s CRYOGAS solution claims the highest storage density, lowest refueling cost and widest operating range without H2 losses while using one-fifth the carbon fiber required in compressed gas tanks.
-
The making of carbon fiber
A look at the process by which precursor becomes carbon fiber through a careful (and mostly proprietary) manipulation of temperature and tension.