Magnetic high-temperature-resistant plastic and particle preparation method and injection molding method thereof

The invention relates to a magnetic high-temperature-resistant plastic and a particle preparation method and an injection molding method thereof. The particle preparation method and the injection molding method are related technological methods based on the magnetic high-temperature-resistant plastic. The magnetic high-temperature-resistant plastic comprises metal powder, thermoplastic resin, a compatilizer and an auxiliary agent, the metal powder is metal nickel powder; the thermoplastic resin is polypropylene and polyphenylene sulfide; the compatilizer is polyvinyl alcohol; the auxiliary agent is ferrite powder; the nickel alloy material comprises the following components in percentage by weight: 20-40% of metal nickel powder, 20-40% of polypropylene powder, 20-40% of polyphenylene sulfide powder, 5-15% of compatilizer and 1-5% of auxiliary agent, and is prepared from the following components in percentage by weight: 20-40% of metal nickel powder, 20-40% of polypropylene powder, 20-40% of polyphenylene sulf