| 摘要 |
A composition of ferrite and epoxy having the form of a film which can be cut, pressed onto word straps, and heat-cured to form an encapsulating keeper on a plated wire memory. The film comprises ferrite powder in a mixture of epoxy resins, typically Epon 1009 and Epon 828, pulverized dicyandiamide and butadiene/acrylonitrile rubber. The mixture is sprayed onto a sheet of halogenated polyolefin and air dried for 8-12 hours at between 160 DEG F. and 180 DEG F. The resulting flexible film is die cut to fit over word straps and further processed by applying 50-75 psi at 325 DEG F. for one hour.
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