Title:
六方晶窒化ホウ素粉末及びその製造方法
Document Type and Number:
Japanese Patent JP7109275
Kind Code:
B2
Abstract:
To provide a hexagonal boron nitride powder, which has less release of α ray, of which anisotropy of heat conduction is reduced, and which can add high thermal conductivity and dielectric strength to a resin composition constituted by filling the same into a resin.SOLUTION: There is provided a hexagonal boron nitride powder containing a hexagonal boron nitride aggregate, and having concentration degree ofB in all boron of 90% or more, maximum torque measured and calculated according to JIS-K-6217-4 of 0.20 to 0.50 Nm, DBP absorption amount of 50 to 100 ml/100 g, and tap bulk density of 0.66 to 0.95 g/cm, and there is provided a manufacturing method of the hexagonal boron nitride powder capable of the hexagonal boron nitride powder by using a raw material by blending aB concentrated oxygen-containing boron compound, a carbon source, an oxygen-containing calcium compound, andB concentrated boron carbide at a specific ratio, heating the raw material under nitrogen atmosphere at a temperature of 1800 to 2100°C, and reduction nitriding the same.SELECTED DRAWING: Figure 1
Inventors:
Yuichi Ikeda
Kentaro Fukuda
Shota Rootstock
Kyoichi Fujinami
Yuichiro Mannabe
Kentaro Fukuda
Shota Rootstock
Kyoichi Fujinami
Yuichiro Mannabe
Application Number:
JP2018118708A
Publication Date:
July 29, 2022
Filing Date:
June 22, 2018
Export Citation:
Assignee:
Tokuyama Corporation
International Classes:
C01B21/064; C08K3/38; C08L101/00; H01L23/373
Domestic Patent References:
| JP2015212217A | ||||
| JP2016094315A | ||||
| JP2016160134A | ||||
| JP2019131442A |
Foreign References:
| US20040208812 | ||||
| WO2018123571A1 |