Z N-35硅橡胶材料的动态力学性能试验研究

针对ZN-35硅橡胶材料宽频范围下的动态力学性能问题,通过DMTA动态热机械仪测试了ZN-35硅橡胶材料在11个不同温度下低频范围内的储能模量、损耗模量、损耗因子。依照国军标GJB981—90黏弹性材料强迫非共振型动态测试方法和主曲线绘制方法,通过对测量数据的计算和处理,绘制出该种材料的主曲线。预测出了各个温度下在更高频率下的动态力学性能,为减振材料的使用及减振器件设计提供了基础数据。结果表明：相同频率下,随着温度的升高,ZN-35硅橡胶储能模量与损耗模量呈下降趋势。当温度恒定时,储能模量和损耗模量会随着频率的升高而升高,直至趋于稳定。主曲线方法可以准确地得到ZN-35硅橡胶材料的高频动态力学性能。

Experimental Study on Dynamic Mechanical Properties of ZN-35 Silicone Rubber

To research the dynamic mechanical properties of ZN-35 silicone rubber materials at a wide frequency range. In this paper, the storage modulus, loss modulus and loss factor of ZN-35 silicone rubber material in the low frequency range of 11 different temperatures were tested by DMTA dynamic thermal mechanical tester. According to GJB981—90 viscoelastic material forced non resonance dynamic test method and master curve method, the material master curve was pictured by calculating and processing the original data. The dynamic mechanical properties of the higher frequency at different temperatures were predicted, which provides the basic data for the design of the damping material. Results show that the storage modulus and loss modulus of ZN-35 silicone rubber decrease with the increase of the temperature at the same frequency. When the temperature is constant, the storage modulus and loss modulus will increase with the increase of the frequency, and it will be stable. The master curve method can accurately obtain the dynamic mechanical properties of ZN-35 silicone rubber materials at high frequency.