Development of Integral Molding of Functionally-Graded Syntactic Foams
Development of Integral Molding of Functionally-Graded Syntactic Foams
复制标题
功能梯度复合泡沫整体成型的研究进展
DOI：
10.1007/978-3-7091-0797-3_1
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
M. Higuchi
中科院分区：
文献类型：
--
作者：
T. Adachi;M. Higuchi
本文提出了一种制备块状功能梯度复合泡沫塑料的新工艺，并对制备的复合泡沫塑料的力学性能进行了评价。由于在制造过程中凝胶化之前微球在基体树脂中的漂浮现象，泡沫中的密度分布是渐变的。密度的分布可以用Richardson和Zaki的斯托克速度公式通过有限差分分析来预测。密度分布受平均密度、微球尺寸、制造过程的温度和持续时间等因素的控制，力学性能分级导致的FG泡沫的渐进塌陷对提高压缩试验中的能量吸收是有效的。
In this paper, we suggested a novel process to fabricate bulk functionally-graded (FG) syntactic plastic foams and evaluated mechanical properties of the fabricated FG foams. The density distribution in the foams was graded due to floating phenomena of the micro-balloons in the matrix resin before gelling in the fabrication process. The distribution of the density could be predicted by finite difference analysis with Richardson and Zaki’s formula for Stoke’s velocity. The density distribution was found to be controlled by average density, micro-balloons size, and temperature and duration of the fabrication process and so on. The progressive collapse of the FG foam due to grading mechanical properties was confirmed to be effective to improve energy absorption in the compression test.