US 12,410,055 B2
Method for water-repellent treatment of boron nitride powder and water-repellent-treated boron nitride
Yong Ho Jung, Seongnam-si (KR); Seung Ryul Yoo, Seo-gu Daejeon (KR); and Dong Chan Seok, Gunsan-si (KR)
Assigned to KOREA INSTITUTE OF FUSION ENERGY, Daejeon (KR)
Appl. No. 17/421,971
Filed by KOREA INSTITURE OF FUSION ENERGY, Daejeon (KR)
PCT Filed Feb. 11, 2020, PCT No. PCT/KR2020/001867
§ 371(c)(1), (2) Date Jul. 9, 2021,
PCT Pub. No. WO2020/166921, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 10-2019-0015706 (KR), filed on Feb. 11, 2019.
Prior Publication US 2022/0112084 A1, Apr. 14, 2022
Int. Cl. C04B 35/00 (2006.01); C01B 21/064 (2006.01); C04B 35/583 (2006.01); C04B 35/628 (2006.01); H05H 1/24 (2006.01)
CPC C01B 21/0648 (2013.01) [C04B 35/583 (2013.01); C04B 35/62802 (2013.01); C04B 35/62884 (2013.01); H05H 1/2406 (2013.01); C01P 2004/04 (2013.01); H05H 2245/40 (2021.05)] 8 Claims
OG exemplary drawing
 
1. A method for water-repellent treatment of boron nitride powders, the method comprising the steps of:
performing plasma treatment on the boron nitride powders by injecting a vaporized silicon-containing organic compound into a plasma generated region using a dielectric barrier discharge plasma apparatus;
wherein the injection of the vaporized silicon-containing organic compound includes passing a solution of the silicon-containing organic compound through a bubbler, and injecting the vaporized silicon-containing organic compound and a carrier gas into the plasma generated region;
wherein the plasma includes plasma formed from the silicon-containing organic compound;
wherein performing the plasma treatment includes forming a water-repellent coating layer on surfaces of the boron nitride powders;
wherein the silicon-containing organic compound includes hexamethyldisiloxane, tetraethoxysilane (TEOS) or trimethylchlorosilane (TMCS);
wherein the water-repellent coating layer contains silicon, carbon and oxygen; and
wherein the water-repellent coating layer chemically bonds to the boron nitride.