Bonded　neodymium　iron　boron　(Nd-Fe-B)　magnets　with　excellent　properties　were　prepared　by　using　waterborne-epoxy　resin/sodium　silicate　composite　binder　(W-EP/SS).　The　results　show　that　this　composite　binder　can　endow　the　bonded　magnets　with　high　temperature　resistance　as　well　as　strong　corrosion　resistance.　In　addition,　the　compressive　strength　of　W-EP/SS　bonded　magnet　is　higher　than　other　types　of　bonded　magnets.　W-EP/SS　composite　binder　has　excellent　homogeneity,　which　can　coat　the　magnetic　powders　uniformly　during　mixing　and　curing,　and　therefore　forms　a　protective　thin　film　on　the　surface　of　the　magnet　to　prevent　thermal　oxidation　under　high　temperature　conditions　as　well　as　corrosion　during　chemical　treatments.　Moreover,　the　W-EP/SS　composite　binder,　which　combines　the　toughness　of　epoxy　resin　with　the　rigidity　of　sodium　silicate,　endows　bonded　magnets　better　mechanical　properties.　It　is　attributed　to　the　co-existence　of　Si-O-Si　and　C-O-C　network　structure　in　the　W-EP/SS.　Therefore,　it　is　expected　that　W-EP/SS　composite　binder　will　provide　a　broader　application　prospects　for　future　bonded　magnets.　(C)　2020　The　Authors.　Published　by　Elsevier　Ltd.