| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition for injection molding capable of manufacturing a molding with a high shape retention and a manufacturing method of a high-quality sintered body high in dimensional accuracy without fail.SOLUTION: A composition for injection molding includes: a magnetic metal powder whose main component is either of Fe, Ni, or Co, whose particle diameter D10, when the cumulative mass is 10%, is 2 μm or more and less than 5 μm, whose particle diameter D50, when the cumulative mass is 50%, is 5 μm or more and 10 μm or less, and whose particle diameter D90, when the cumulative mass is 90%, is 12 μm or more and 28 μm or less; and an organic binder which includes a first resin comprising an unsaturated glycidyl group containing polymer and a second resin whose softening point is higher than the first resin. The content amount of the organic binder is 3 pts.mass or more but 9 pts.mass or less with respect to 100 pts.mass of the magnetic metal powder. |
