# US 2014/0197352 A1 · Methods and compositions for energy dissipation

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- Number: US 2014/0197352 A1
- Document ID: US20140197352A1
- Status: Published application
- Kind: A1
- Application number: 13/739,575
- Filed: 2013-01-11
- Published: 2014-07-17
- Earliest claimed: 2013-01-11
- Assignees: Sabic Innovative Plastics IP B.V.
- Applicants: Sabic Innovative Plastics IP B.V.
- Inventors: Davide Louis Simone; Gary Stephen Balch; David Alexander Gibson, III; Harold Jay Patchen; Allen Lawrence Garner; Daniel Qi Tan; Francis Johnson; Gregory John Parker
- Web page: https://patentgrep.com/patent/US20140197352A1

## CPC

- H01Q 15/14: Reflecting surfaces; Equivalent structures {(electromagnetic shields H01Q1/526)}
- C03C 14/004: {the non-glass component being in the form of particles or flakes}
- C08K 3/08: Metals
- C08K 7/00: Use of ingredients characterised by shape
- H05K 9/0083: {comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers (H05K9/0086 takes precedence)}
- C08K 2003/0843: {Cobalt}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A method for forming a composition exhibiting energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz can comprise treating a magnetic lossy material to increase the brittleness of the material, processing at least a portion of the magnetic lossy material into a powder, and mixing at least a portion of the powder with a dielectric resin, wherein the percentage volume of the powder relative to the total volume of the composition is configured such that dissipation of incident electromagnetic radiation is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz.

## Claims

### Claim 1

A method for fanning a composition exhibiting energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the method comprising:
treating a magnetic lossy material to increase the brittleness of the material;
processing at least a portion of the magnetic lossy material into a powder; and
mixing at least a portion of the powder with a dielectric resin, wherein the percentage volume of the powder relative to the total volume of the composition is configured such that dissipation of incident electromagnetic radiation is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz.

### Claim 2 (depends on 1)

The method of claim 1, wherein treating the magnetic lossy material comprises heat treating.

### Claim 3 (depends on 1)

The method of claim 1, wherein treating the magnetic lossy material comprises inducing substantial crystallization of at least a portion of the magnetic lossy material.

### Claim 4 (depends on 1)

The method of claim 1, wherein the heat treating is performed at about 350 C.

### Claim 5 (depends on 1)

The method of claim 1, wherein the magnetic lossy material comprises Metglas 2705M.

### Claim 6 (depends on 1)

The method of claim 1, wherein the magnetic lossy material comprises Metglas 2705M ribbon.

### Claim 7 (depends on 1)

The method of claim 1, wherein processing at least a portion of the magnetic, lossy material comprises grinding.

### Claim 8 (depends on 1)

The method of claim 1, wherein processing at least a portion of the magnetic lossy material comprises cryogenic grinding.

### Claim 9 (depends on 1)

The method of claim 1, further comprising filtering at least a portion of the powder.

### Claim 10 (depends on 9)

The method of claim 9, wherein the filtered powder has an average particulate size of less than or equal to 250 microns.

### Claim 11 (depends on 9)

The method of claim 9, wherein the filtered powder has an average particulate size of less than or equal to 75 microns.

### Claim 12 (depends on 1)

The method of claim 1, wherein the dielectric resin comprises a thermoplastic resin.

### Claim 13 (depends on 1)

The method of claim 1, wherein the percentage volume of the powder relative to the total volume of the composition is from about 10% to about 40%.

### Claim 14 (depends on 1)

The method of claim 1, wherein the percentage volume of the powder relative to the total volume of the composition is from about 30% to about 40%.

### Claim 15 (depends on 1)

The method of claim 1, wherein the percentage volume of the powder relative to the total volume of the composition is from about 10% to about 20%.

### Claim 16

A composition for energy dissipation behavior in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the composition comprising:
a dielectric; and
a magnetic lossy powder mixed with at least a portion of the dielectric, wherein the percentage volume of the magnetic lossy material relative to the total volume of the composition is configured such that dissipation of incident electromagnetic radiation is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz.

### Claim 17 (depends on 16)

The composition of claim 16, wherein the magnetic lossy powder comprises Metglas 2705M.

### Claim 18 (depends on 16)

The composition of claim 16, wherein the magnetic lossy powder has an average particulate size of less than or equal to 250 microns.

### Claim 19 (depends on 16)

The composition of claim 16, wherein the magnetic lossy powder has an average particulate size of less than or equal to 75 microns.

### Claim 20 (depends on 16)

The composition of claim 16, wherein the dielectric comprises a thermoplastic polymer.

### Claim 21 (depends on 16)

The composition of claim 16, wherein the percentage volume of the magnetic lossy powder relative to the total volume of the composition is from about 10% to about 40%.

### Claim 22 (depends on 16)

The composition of claim 16, wherein percentage volume of the magnetic lossy powder relative to the total volume of the composition is from about 30% to about 40%.

### Claim 23 (depends on 16)

The composition of claim 16, wherein the percentage volume of the magnetic, lossy powder relative to the total volume of the composition is from about 10% to about 20%.

### Claim 24 (depends on 16)

The composition of claim 16, wherein a thickness of the composition is configured to minimize transmission of the incident electromagnetic radiation.

### Claim 25 (depends on 16)

The composition of claim 16, wherein a percentage volume of the magnetic lossy powder relative to the total volume of the composition is configured such that one or more of a reflection, absorption, and transmission of electromagnetic radiation incident to the composition is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz.