聚苯乙烯基纳米复合材料非线性弹性模量的相对变化
Relative variations of nonlinear elastic moduli in polystyrene-based nanocomposites
摘要：
在本文中，我们应用的方法的基础上分析的声波速度的变化在静态应力下的三阶弹性模量的测量在三个聚苯乙烯基纳米复合材料与不同的填料：SiO2颗粒，埃洛石天然小管，和炭黑颗粒。通过相同的技术制造的样品和我们的数据提供信息的非线性性能的相对变化所造成的添加的填料的复合材料。复合材料获得的数据进行了比较，与商业级聚苯乙烯。分析了不同填料复合材料非线性弹性模量的变化规律。结果与理论预测定性一致。
英文摘要：
In this paper we apply the methodology based on the analysis of changes in acoustic wave velocities under static stress for measurements of the third-order elastic moduli in three polystyrene-based nanocomposites with different fillers: SiO2 particles, halloysite natural tubules, and carbon black particles. The samples were fabricated by the same technology and our data provide information on relative changes of nonlinear properties of the composites caused by addition of the fillers. The data obtained for composites are compared with that for commercial grade polystyrene. The substantial variations of the nonlinear elastic moduli for composites with different types of fillers are demonstrated and analyzed. The results are in a qualitative agreement with theoretical predictions.
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