Development of hybrid functionally-graded polymeric materials and their application on energy absorbers in terms of inhomogeneous deformation

在本研究中，我们开发了一种杂化功能梯度聚合物材料，即具有梯度密度分布的复合泡沫，以增强冲击能量吸收。提出了利用微球在基质树脂中的漂浮现象来制备功能梯度泡沫塑料的制备工艺。动态粘弹性测试和压缩试验表明，泡沫塑料的局部力学性能取决于基质树脂的性能和微球的体积分数。一维应力波分析表明，泡沫材料具有较高的能量吸收能力，可以减小冲击载荷下的传力。

In the present study, hybrid functionally-graded polymeric material that is syntactic foam having graded density distribution was developed for enhancing impact-energy absorption. Fabrication processes were proposed to produce functionally-graded foams by floating phenomenon of micro-balloons in matrix resin. Dynamic viscoelastic measurements and compression test revealed that the local mechanical properties of the fabricated foams were determined by the properties of the matrix resin and the volume fraction of the micro-balloons. Moreover, one-dimensional stress wave analysis demonstrated that the foams have high-energy absorption capability and can reduce the transmitted force in impact loading.