Composite magnetic material, coil component using same, and composite magnetic material manufacturing method
US-2017053729-A1 · Feb 23, 2017 · US
Magneto-rheological elastomer
US11145447B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11145447-B2 |
| Application number | US-201916682779-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 13, 2019 |
| Priority date | Jul 19, 2019 |
| Publication date | Oct 12, 2021 |
| Grant date | Oct 12, 2021 |
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Abstract
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A magneto-rheological elastomer that can achieve weight reduction, maintain mechanical properties at an excellent level, and improve magnetic flux density. A magneto-rheological elastomer includes an elastomer base material as a matrix and sendust flakes and spherical sendust powders. The magneto-rheological elastomer is made by mixing the sendust flakes and the spherical sendust powders in the elastomer base material.
First claim
Opening claim text (preview).
What is claimed is: 1. A magneto-rheological elastomer comprises: an elastomer base material; and sendust flakes and sendust powders dispersed in the elastomer base material, wherein the amount of the sum of the sendust flakes and sendust powders is 30-150 PHR to the elastomer base material, wherein a mixture ratio of the sendust flakes and sendust powders has a value of 0:10 to 6:4, wherein a case in which the mixture ratio of the sendust flakes and the sendust powders has a value of 0:10 is not include, wherein the sendust flakes comprise Si: 9-10 wt %, Al: 4-8 wt %, and a balance of Fe and the sendust powders comprise Si: 9-10 wt %, Al: 4-25 8 wt %, and a balance of Fe, wherein magnetic flux density of the magneto-rheological elastomer is 0.025 T at 4900 A/m or more, wherein tensile strength of the magneto-rheological elastomer is 150 Kgf/cm 2 or more, and wherein elongation of the magneto-rheological elastomer is 500% or more. 2. The magneto-rheological elastomer of claim 1 , wherein the mixture ratio of the sendust flakes and sendust powders has a value of 0:10 to 4:6. 3. The magneto-rheological elastomer of claim 1 , wherein the sendust flakes are arranged in a predetermined direction. 4. The magneto-rheological elastomer of claim 1 , wherein the sendust flakes are generally flat and the sendust powders are generally spherical.
Assignees
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Classifications
Magnetic additives · CPC title
Compounds containing metals of Groups 4 to 10 or of Groups 14 to 16 of the Periodic Table · CPC title
containing manganese · CPC title
Metals · CPC title
Elements · CPC title
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- What does patent US11145447B2 cover?
- A magneto-rheological elastomer that can achieve weight reduction, maintain mechanical properties at an excellent level, and improve magnetic flux density. A magneto-rheological elastomer includes an elastomer base material as a matrix and sendust flakes and spherical sendust powders. The magneto-rheological elastomer is made by mixing the sendust flakes and the spherical sendust powders in the…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Motors Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F1/14791. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 12 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).