Patent ID: 11866376
Assignee: UNIVERSITY OF NEW HAMPSHIRE
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  D  F | IPC C  D  F

Claim 0:
1. A method of producing boron-nitride nanotube continuous yarn, the method comprising:
feeding a boron containing gas species and a nitrogen containing gas species, the nitrogen containing gas species and the boron containing gas species being the same or different, a carrier gas, and a catalyst or a catalyst precursor into a plurality of reaction tubes, each reaction tube having a first portion at a first temperature and a second portion at a second temperature greater than the first temperature;
rotating the reaction tubes around a common axis while the boron, nitrogen and catalyst flow from the first portion to the second portion of each of the plurality of reaction tubes;
growing boron-nitride nanotubes towards an end of each of the plurality of reaction tubes; and
combining the boron-nitride nanotubes into a yarn as the nanotubes exit the reaction tubes.