【摘要】 对室温硫化硅橡胶的品种、性能、分子量、超声传播等因素进行了分析和研究，该胶具有低声达特性的透声材料性能，其粘度在9Pa·s－14Pa·s最佳条件时，纵波声速达到100m／s以下，声衰减系数低于0．5dB／mm，为研制特种超声换能器奠定了基础。更多还原

【Abstract】 Different variehes, chemical strUcti’e, setting conditions and ultrasonic propagation of room -temperatUre vulcanaize silicone elastomer wete investigated. The a special kind of silicone elastomer is developed for ultrasonic detection as low velocity probe. The experimental result shows that in case of the silicons elastomer with viscosity of 9 ~ 14 Pa’ s, the ultrasonis velocity is no higher than loam/s and The value of acoushc attenuation is below 0. sdB/mm.更多还原