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US 11,145,447 B2Granted
Magneto-rheological elastomer
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorYoung Min Kim
Life of this patent
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Abstract
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.
Claims4
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/cm2 or more, and
- wherein elongation of the magneto-rheological elastomer is 500% or more.
11 more elements
Dependencies are inferred from the claim text.