Study on preparation and physical properties of PPS/NdFeB composite granule

Abstract Polyphenylene sulfide /NdFeB composite granules were fabricated by a simple melt blending method with polyphenylene sulfide as the binder. A high‐resolution field emission electron microscope and a fourier infrared spectrometer were used to study the morphology and composition of the granular sample. The experimental results indicate that polyphenylene sulfide resin can fill the gaps between NdFeB particles, reducing surface pores on the granular sample. The melt flow rate study showed that the fluidity of the polyphenylene sulfide /NdFeB composite granule was significantly increased with the increase in polyphenylene sulfide binder content. Polyphenylene sulfide is beneficial in increasing the compressive strength of the granular sample but decreases its thermal stability and magnetic properties. When the polyphenylene sulfide content is 9 wt.%, the magnetic and comprehensive properties of the granular sample are the best. Highlights PPS/NdFeB granules were prepared by the melt blending method for the first time. Effects of PPS content on the structure and properties of PPS/NdFeB were studied. The optimal PPS content (9%) for PPS/NdFeB industrial production was obtained.