Electromagnetic wave absorber, method of producing the same, flexible printed wiring board and electronic device

A manufacturing method and absorber technology, applied in the direction of printed circuit, printed circuit, printed circuit dielectric, etc., can solve the problems of increased electromagnetic noise, electronic equipment failure, cancer, etc., and achieve the effect of high electromagnetic wave absorption
CN102883591AInactive Publication Date: 2013-01-16SONY CORP
4 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SONY CORP
Publication Date
2013-01-16
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Provided is an electromagnetic wave absorber, including a base material and a porous carbon material containing, as a raw material, a plant-based material having a silicon content of 5% by mass or more, in which the porous carbon material has a specific surface area value as measured by the nitrogen BET method of 400 m2 / g or more, a silicon content of 1% by mass or less, a pore volume as measured by the BJH method of 0.2 cm3 / g or more, and a pore volume as measured by the MP method of 0.2 cm3 / g or more, or a total pore volume of pores each having a diameter in the range from 110-9 m to 510-7 m as measured by the Non Localized Density Functional Theory of 1.0 cm3 / g or more.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to an electromagnetic wave absorber, a manufacturing method thereof, a flexible printed wiring board, and electronic equipment. Background technique

[0002] In recent years, with miniaturization and high operating speed of electronic equipment, electromagnetic noise generated by various electromagnetic waves emitted from electronic equipment has disadvantageously increased. In addition, it has been reported that electromagnetic noise can not only cause malfunction of electronic equipment, but also cause leukemia, cancer, etc. As a means for solving these problems of electromagnetic noise, for example, an electromagnetic wave absorber can be applied to electronic equipment. The mechanism by which an electromagnetic wave absorber absorbs electromagnetic waves utilizes conductivity, dielectricity, or magnetism. Various electromagnetic wave absorbers have been developed.

[0003] Among them, attention is paid to electromag...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More