In　present　study,　sodium　silicate,　a　kind　of　heat-resistant　binder,　was　used　to　prepare　bonded　Nd-Fe-B　magnets　with　improved　thermal　stability　and　mechanical　strength.　Effect　of　curing　temperature　and　curing　time　of　the　new　binder　to　the　magnetic　properties,　microstructure,　and　mechanical　strength　of　the　magnets　was　systematically　investigated.　Fracture　surface　morphology　observation　show　that　sodium　silicate　in　bonded　magnets　could　completely　be　cured　at　175　degrees　C　for　40　min,　and　the　magnets　prepared　under　this　condition　exhibit　optimal　properties.　They　exhibit　usable　magnetic　properties　of　B-r　of　4.66　kGs,　H-cj　of　4.84　kOe,　and　(BH)(max)　of　4.06　MGOe　at　200　degrees　C.　Moreover,　the　magnets　possess　high　compressive　strength　of　63　MPa.　(C)　2017　Elsevier　B.　V.　All　rights　reserved.