In　order　to　explore　the　effect　of　temperature　on　the　static　and　dynamic　compressive　mechanical　properties　of　polyurea,　21　groups　of　compressive　mechanical　properties　tests　of　polyurea　materials　at　low,　medium　and　high　strain　rates　were　carried　out　based　on　the　three　temperature　environments　of　room　temperature　in　winter,　50　°C　and　80　°C.　It　is　found　by　analyzing　the　mechanical　Parameters　of　polyurea　at　different　temperature　and　strain　rate　that　polyurea　would　show　strain　rate　effect　and　strain　hysteresis　effect　when　subjected　to　dynamic　force.　The　dynamic　force　could　increase　the　strength　of　polyurea,　but　reduce　its　plasticity.　Polyurea　also　shows　temperature　effect　and　strain　hysteresis　effect　under　the　influence　of　temperature.　Heating　environment　will　reduce　strength　but　increase　plasticity　of　polyuria.　And　the　temperature　will　change　the　law　of　dynamic　stress　development　of　polyurea.　As　the　temperature　increases,　the　development　trend　of　the　dynamic　curve　hardening　section　of　polyurea　will　change　from　downward　to　upward.　Polyurea　has　time　temperature　equivalence,　and　increasing　Observation　time　or　temperature　will　result　in　similar　changes　in　its　properties.　The　strain　rate　effect　has　a　greater　effect　on　the　change　in　elasticity　of　polyurea　than　that　in　strength.　However,　the　temperature　effect　has　a　more　obvious　effect　on　the　change　in　strength　of　polyurea　than　that　in　elasticity.　The　decreasing　hardening　characteristics　can　effectively　protect　polyurea　from　the　external　high　strain　rate　force,　and　the　plastic　changes　caused　by　high　temperature　can　effectively　alleviate　the　secondary　damage　of　fragments.　©　2025　Huazhong　University　of　Science　and　Technology.　All　rights　reserved.