US 12,134,856 B2
Method for producing composite material
Takuji Komukai, Osaka (JP); Maki Onizuka, Osaka (JP); Hiromi Teruhira, Osaka (JP); and Katsuyuki Nakai, Osaka (JP)
Assigned to NITTA CORPORATION, Osaka (JP)
Filed by NITTA Corporation, Osaka (JP)
Filed on May 4, 2023, as Appl. No. 18/312,053.
Application 18/312,053 is a continuation of application No. 15/520,565, abandoned, previously published as PCT/JP2015/079333, filed on Oct. 16, 2015.
Prior Publication US 2023/0304215 A1, Sep. 28, 2023
Int. Cl. D06M 11/74 (2006.01); C01B 32/158 (2017.01); C08J 5/04 (2006.01); C08J 5/06 (2006.01); D06M 15/55 (2006.01); B05D 1/18 (2006.01); D06M 101/40 (2006.01)
CPC D06M 11/74 (2013.01) [C01B 32/158 (2017.08); C08J 5/042 (2013.01); C08J 5/06 (2013.01); D06M 15/55 (2013.01); B05D 1/18 (2013.01); C01B 2202/06 (2013.01); C01B 2202/34 (2013.01); C01B 2202/36 (2013.01); C08J 2363/00 (2013.01); C08J 2377/02 (2013.01); D06M 2101/40 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A method for producing a composite material, the method comprising:
preparing a fiber tow, a surface of the fiber tow being exposed;
preparing a liquid dispersion containing carbon nanotubes;
applying mechanical energy with ultrasonic waves to the liquid dispersion to cause a state of reversible reaction in which dispersion and aggregation of the carbon nanotubes occur constantly;
immersing the fiber tow in the liquid dispersion by winding the fiber tow around a guide roller disposed in a CNT adhesion tank containing the liquid dispersion that is in the state of reversible reaction and traveling the fiber tow in the CNT adhesion tank to allow the carbon nanotubes to adhere to a surface of a fiber of the fiber tow.