An　experimental　study　on　the　dynamic　mechanical　properties　of　polyurea　was　carried　out　by　using　a　low　impedance　split　Hopkinson　pressure　bar　and　pull　rod　test　device.　The　dynamic　compression　and　dynamic　tensile　tests　of　polyurea　8380　at　room　temperature　(　T　=　18　°C　)　and　high　temperature　(50,　80　°C　)　and　low　temperature　(　-40,　-20　°C　)　were　carried　out　respectively.　The　dynamic　compression　and　dynamic　tensile　properties　of　the　material　were　studied,　and　the　effects　of　strain　rate　and　temperature　on　the　dynamic　mechanical　properties　of　the　material　were　studied.　The　results　show　that:　the　dynamic　mechanical　properties　of　polyurea　8380　have　significant　strain　rate　effect　at　different　temperatures.　With　the　increase　of　loading　strain　rate,　the　strength,　deformation　capacity　and　energy　dissipation　capacity　of　the　material　are　improved　to　varying　degrees.　The　dynamic　mechanical　properties　of　polyurea　8380　have　obvious　temperature　dependence.　The　dynamic　compressive　properties　of　polyurea　8380　show　different　changes　at　high　and　low　temperatures.　The　dynamic　compressive　strength　of　polyurea　8380　is　much　lower　than　that　at　room　temperature.　With　the　increase　of　temperature,　the　dynamic　compressive　strength　of　the　material　decreases.　At　a　low　temperature,　the　dynamic　compressive　strength　and　energy　dissipation　capacity　of　polyurea　8380　are　significantly　improved　compared　with　those　at　room　temperature.　With　the　decrease　of　temperature,　the　dynamic　compressive　strength　of　the　material　increases.　©　2024　Xi＇an　Jiaotong　University.　All　rights　reserved.