公开(公告)号：US09929074B2

公开(公告)日：2018-03-27

申请号：US15118961

申请日：2015-01-15

Applicant: KANEKA CORPORATION

Inventor： Makoto Kutsumizu ,  Yusuke Kato ,  Yasushi Nishikawa ,  Yusuke Ohta

IPC: H01L23/373 ,  B32B18/00 ,  C01B31/04 ,  H01L21/48 ,  H01L23/42 ,  C04B35/52 ,  C01B32/20

CPC classification number: H01L23/3735 ,  B32B18/00 ,  C01B32/20 ,  C01P2004/20 ,  C01P2006/12 ,  C01P2006/82 ,  C04B35/522 ,  C04B2235/787 ,  C04B2237/363 ,  C04B2237/704 ,  C04B2237/82 ,  H01L21/4803 ,  H01L23/373 ,  H01L23/42 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Use of highly oriented graphite including graphite layers placed on top of one another and containing only a small amount of water allows for production of an electronic device that includes, as an element, highly oriented graphite in which no delamination occurs, that is highly reliable in use, and that has a good heat dissipation capability.

公开(公告)号：US09845267B2

公开(公告)日：2017-12-19

申请号：US14995016

申请日：2016-01-13

Applicant: Kaneka Corporation

Inventor： Yusuke Ohta ,  Makoto Mishiro ,  Takashi Inada ,  Yasushi Nishikawa

IPC: B32B9/00 ,  C04B35/524 ,  C01B31/04

CPC classification number: C04B35/524 ,  C01B32/19 ,  C01B32/20 ,  C01B32/205 ,  C01B32/225 ,  Y10T428/30

Abstract: Provided is a long and large-area graphite film having improved thermal diffusivity and flex resistance, and accompanied by ameliorated ruffling. According to a method for producing a graphite film, in which graphitization of a heat-treated film consisting of a carbonized polymer film is carried out in a state being wrapped around an internal core, the method being characterized in that a heat treatment is executed by controlling distance(s) between the internal core and the film, and/or between the layers of the film, a graphite film accompanied by significantly ameliorated ruffling can be obtained.

公开(公告)号：US20170073231A1

公开(公告)日：2017-03-16

申请号：US15362349

申请日：2016-11-28

Applicant: KANEKA CORPORATION

Inventor： Yusuke Ohta ,  Takashi lnada ,  Makoto Mishiro ,  Yasushi Nishikawa

IPC: C01B31/04 ,  C08G69/26 ,  C08G69/28

CPC classification number: C01B31/04 ,  C04B35/522 ,  C04B35/524 ,  C04B35/62218 ,  C04B35/63444 ,  C08G69/26 ,  C08G69/28 ,  C08L77/06

Abstract: A graphite film which is low in graphite dust generation can be produced by properly selecting acid dianhydride and diamine which constitute a polyimide film, which polyimide film is a raw material of the graphite film. Specifically, the graphite film which is low in graphite dust generation can be obtained if (1) the acid dianhydride is PMDA and the diamine has a molar ratio of ODA/PDA in a range of 100:0 to 80:20, or (2) the acid dianhydride has a molar ratio of PMDA/BPDA in a range of 80:20 to 50:50, and the diamine has a molar ratio of ODA/PDA in a range of 30:70 to 90:10.

Abstract translation: 可以通过适当选择构成聚酰亚胺膜的酸二酐和二胺作为石墨膜的原料，来制造石墨粉生成量低的石墨膜。 具体而言，如果（1）酸二酐是PMDA，二胺的ODA / PDA的摩尔比在100:0〜80:20的范围内，则可以得到石墨粉尘产生低的石墨膜，或（2 ）酸二酐具有80:20至50:50范围内的PMDA / BPDA的摩尔比，二胺的ODA / PDA的摩尔比在30:70至90:10的范围内。

公开(公告)号：US09453155B2

公开(公告)日：2016-09-27

申请号：US13795767

申请日：2013-03-12

Applicant: Kaneka Corporation

Inventor： Yusuke Ohta ,  Shuhei Wakahara ,  Yasushi Nishikawa

IPC: C09K5/14 ,  C01B31/04 ,  H01L23/373 ,  H05K7/20 ,  B32B5/18 ,  B32B7/12 ,  B32B9/00 ,  B32B9/04 ,  B32B27/06 ,  B32B27/28

CPC classification number: C09K5/14 ,  B32B5/18 ,  B32B7/12 ,  B32B9/007 ,  B32B9/045 ,  B32B27/065 ,  B32B27/281 ,  B32B2307/302 ,  B32B2307/306 ,  B32B2307/54 ,  B32B2307/714 ,  B32B2457/00 ,  C01B32/20 ,  H01L23/373 ,  H01L23/3737 ,  H01L2924/0002 ,  H05K7/20481 ,  Y10T428/24446 ,  Y10T428/2918 ,  Y10T428/30 ,  H01L2924/00

Abstract: An object of the present invention is to provide a graphite film, and a graphite composite film both having an excellent thermal diffusivity which can sufficiently manage heat dissipation of electronic instruments, precision instruments and the like, along with an excellent flex resistance which can withstand application to bent portions.Means for Resolution of the present invention is a graphite film exhibiting the number of reciprocal foldings being 10,000 times or more as measured using a rectangular strip test piece having a width of 15 mm until the test piece breaks in a MIT folding endurance test under conditions of: a curvature radius R of the bending clamp being 2 mm; a left-and-right bending angle being 135°; a bending rate being 90 times/min; and a load being 0.98 N.

Abstract translation: 本发明的解决方法是使用宽度为15mm的矩形条状试验片测定的往复折叠数为10,000倍以上的石墨膜，直到试验片在MIT耐折性试验中断裂为止， 弯曲夹具的曲率半径R为2mm; 左右弯曲角度为135°; 弯曲率为90次/分钟; 负载为0.98N。