| 发明名称 |
METHOD FOR PRODUCING GRAPHITE FILM |
| 摘要 |
Provided is a method of producing a graphite film having a high thermal diffusivity, the method including heat-treating, at a temperature of not lower than 2,400° C., a polyimide film or a carbonized film obtained by carbonizing the polyimide film, the polyimide film (i) having a thickness of not less than 34 μm and not more than 42 μm and a birefringence of not less than 0.1000 and (ii) being obtained with use of (a) an acid dianhydride component containing not less than 70 mol % of PMDA and (b) a diamine component containing not less than 70 mol % of ODA. |
| 申请公布号 |
US2017001867(A1) |
申请公布日期 |
2017.01.05 |
| 申请号 |
US201415031430 |
申请日期 |
2014.11.28 |
| 申请人 |
KANEKA CORPORATION |
发明人 |
KOBAYASHI Motoaki;NISHIKAWA Yasushi;INADA Takashi;OHTA Yusuke;KATAYAMA Satoshi;KUTSUMIZU Makoto |
| 分类号 |
C01B31/04 |
主分类号 |
C01B31/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of producing a graphite film having a thermal diffusivity of not less than 9.0 cm2/s, the method comprising:
heat-treating, at a temperature of not lower than 2,400° C., a polyimide film or a carbonized film obtained by carbonizing the polyimide film, the polyimide film having (i) a thickness of not less than 34 μm and not more than 42 μm and (ii) a birefringence of not less than 0.100 and not more than 0.130. |
| 地址 |
Osaka-shi, Osaka JP |
