| 摘要 |
PURPOSE:To apply the material widely to speakers, motors etc. by contriving the improvement in mechanical properties and measurement accuracy by magnetizing a composition formed by compounding a polyamide resin with a metallic salt of ionic hydrocarbon copolymer and iron and/or cobalt metallic fiber. CONSTITUTION:A polyamide resin is magnetized with a composition formed by compounding a metallic salt of an ionic hydrocarbon copolymer and a metallic fiber of iron and/or cobalt. As the polyamide resin for use, any normal chain polymer comprising amide radicals in its molecular chain is polymer comprising amide radicals in its molecular chain is available and single polymer, mixture, and copolymer can be used. As the metallic salt of ionic hydrocarbon copolymer, zinc and sodium or potassium salt which are hydrocarbon copolymers including pendent carboxyl radicals are favorable and the compounding quantity is preferably 5-50wt% to the polyamide resin. Also for the metallic fiber for use, the material can function as a permanent magnet by being imparted with a magnetic field and includes at least iron or cobalt and the compounding quantity is usually 60-95wt%. |
