Method of manufacturing a resin bound magnet
US5176842A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1990 |
| Grant date | Jan 5, 1993 |
| Priority date | — |
| Expiry date | Dec 28, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a resin bound magnet comprising, mixing and kneading a powdered magnetic material and a rubber modified epoxy resin obtained from the addition polymerization of an epoxy resin and a butadiene or nitrile rubber and thereafter molding and setting the kneading mixture into a desired shape. The magnets prepared by the present invention exhibit permanent deformation under low compressive force, are soft and heat resistant and yet highly elastic and possess low dynamic exothermic properties and excellent low temperature characteristics. In addition, the inventive magnets exhibit excellent radial compression strength and other mechanical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.