公开(公告)号：US20180354242A1

公开(公告)日：2018-12-13

申请号：US15778516

申请日：2016-11-22

申请人： TOMOEGAWA CO., LTD.

发明人： Takeshi HASHIMOTO ,  Takuma HATTORI ,  Kojiro TSURUTA

IPC分类号： B32B27/20 ,  B32B15/082 ,  B32B15/20 ,  B32B7/12 ,  C09D175/14 ,  C09D5/24 ,  H05K9/00

CPC分类号： B32B27/20 ,  B32B7/12 ,  B32B15/082 ,  B32B15/20 ,  B32B27/18 ,  B32B27/30 ,  B32B2307/40 ,  C08F299/00 ,  C08K2003/2227 ,  C08K2003/2241 ,  C08K2201/001 ,  C08K2201/016 ,  C09D5/24 ,  C09D175/14 ,  H05K9/00 ,  H05K9/0081

摘要： A sheet-shaped matched-type electromagnetic wave absorber can obtain electromagnetic wave absorption performance with a relatively small thickness but has a problem that particularly a dimensional change in an electromagnetic wave absorption layer (resin composition layer) has a large influence on the electromagnetic wave absorption performance when being exposed to a high temperature.By laminating a resin composition layer in which a filler with an aspect ratio of 5 or more and a filler with an aspect ratio of less than 5 are dispersed and fixed with an electromagnetic wave reflection layer in a cured product of a resin composition containing an acrylic polymerizable resin and a polymerization initiator, it is possible to provide a matched-type electromagnetic wave absorber having high heat resistant dimensional stability and high electromagnetic wave absorption performance.

公开(公告)号：US20150371743A1

公开(公告)日：2015-12-24

申请号：US14743801

申请日：2015-06-18

申请人： TOMOEGAWA CO., LTD.

发明人： Takeshi HASHIMOTO ,  Takuma HATTORI ,  Kojiro TSURUTA

IPC分类号： H01F1/01 ,  C22C38/08 ,  C22C38/06 ,  C22C38/02

CPC分类号： C22C38/06 ,  B22F1/0055 ,  B22F1/0062 ,  B22F2001/0066 ,  C22C33/0271 ,  C22C38/02 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/26 ,  Y10T428/28 ,  Y10T428/2848

摘要： A composite magnetic material has sufficient flexibility and can be produced with a high producing ability without having inferior form. The composite magnetic material contains soft magnetic metal powder and resin composition containing an A component, which is an acryl copolymer with an epoxy group, and a B component, which is phenol resin, in which the soft magnetic metal powder is dispersed in the resin composition, and a mass ratio denoted by the A component/the B component is 4 to 99. It is preferable that the mass ratio denoted by the soft magnetic metal powder/the A component+the B component) be 1 to 49.

摘要翻译： 复合磁性材料具有足够的柔韧性，并且可以以较高的生产能力生产而不会变差。 复合磁性材料含有软磁性金属粉末和含有作为丙烯酸共聚物的作为环氧基的A成分和作为酚醛树脂的B成分的软磁性金属粉末分散在树脂组合物中的树脂组合物 ，由A成分/ B成分表示的质量比为4〜99。优选由软磁性金属粉末/ A成分+ B成分表示的质量比为1〜49。