Title:
High-fever conductivity boehmite and a manufacturing method for the same
Document Type and Number:
Japanese Patent JP6222827
Kind Code:
B2
Abstract:
Provided are high thermal conductive boehmite, which has the characteristics of boehmite such as flame retardancy and high filling and yet has an improved thermal conductivity, and a method for manufacturing the high thermal conductive boehmite. The high thermal conductive boehmite is characterized by having thermal conductivity calculated in accordance with the following Mathematical Formula 1 of 11.0 W/m·K or greater; 1 - Vf = »c - »f / »m - »f × »m / »c § 1 / n n = 3 / È (with the proviso that, Vf represents the volume filling ratio of boehmite, »c represents the thermal conductivity (W/m·K) of a boehmite-resin composite, »f represents the thermal conductivity (W/m·K) of boehmite, »m represents the thermal conductivity (W/m·K) of the resin, n represents the shape factor of filler particles proposed by Hamilton and Crosser, È represents a value calculated by dividing the surface area of a sphere that has the same volume of a boehmite particle volume by the surface area of an actual particle, and ^ represents exponentiation).
Inventors:
Yasuhiro Ota
Mizutani Masashi
Kenji Kido
Kawai Tokio
Hirokazu Kikata
Mizutani Masashi
Kenji Kido
Kawai Tokio
Hirokazu Kikata
Application Number:
JP2013229577A
Publication Date:
November 01, 2017
Filing Date:
November 05, 2013
Export Citation:
Assignee:
Kawai Lime Industry Co., Ltd.
International Classes:
C01F7/441
Domestic Patent References:
| JP2003507299A |
Foreign References:
| US20070129584 |
Other References:
川村和郎,遠藤晴巳,ベーマイト及び無水アルミナの吸湿特性,日本セラミックス協会学術論文誌,社団法人日本セラミックス協会,1999年 4月 1日,Vol.107, No.4,PP.335-358
Attorney, Agent or Firm:
Akira Nishio