ZN-35　silicone　rubber　is　a　kind　of　effective　vibration　damping　material　in　aerospace,　which　can　be　made　into　a　vibration　damping　pad　for　preventing　vibration　and　damage　to　important　components　in　the　rocket.　In　this　paper,　the　energy　storage　modulus　and　loss　factor　of　ZN-35　silicone　rubber　materials　at　11　different　temperatures　were　tested　by　DMTA.　The　dynamic　mechanical　properties　of　the　materials　were　analyzed　at　different　temperatures.　Finally,　through　the　selection　and　fitting　of　data,　the　four　parameters　(alpha,　beta,　E-0,　E-infinity)　of　H-N　model　is　determined.　Meantime　the　H-N　model　curve　is　drawn.　The　dynamic　mechanical　properties　of　the　materials　are　provided　by　using　the　H-N　model,　which　provides　the　basic　data　for　the　use　of　vibration　damping　materials　and　the　design　of　shock　absorber.