Materials Science and Engineering, Tuskegee University, Tuskegee, AL 36088, USA.
Ultrason Sonochem. 2010 Jun;17(5):947-52. doi: 10.1016/j.ultsonch.2010.02.001. Epub 2010 Feb 8.
A sonochemical method has been developed to synthesize shear thickening fluid. This shear thickening fluid (STF) is composed of hard silicon dioxide nanoparticles and polyethylene glycol (PEG) liquid polymer. The combination of flow-able and hard components at a particular composition, results a material with remarkable rheological properties that is suitable for liquid body armor applications. In the present study nine types of STF's have been synthesized with two different types of silica nanoparticles (15 nm and 200 nm) and polyethylene glycol at various weight fractions using a high intensity ultrasonic irradiation. The resultant STF samples were tested for their rheological and thermal properties. The advantages and disadvantages of this process have been discussed.
一种声化学方法已被开发用于合成剪切增稠流体。这种剪切增稠流体（STF）由硬二氧化硅纳米粒子和聚乙二醇（PEG）液体聚合物组成。在特定组成下，可流动和硬成分的组合产生了具有显著流变性能的材料，适用于液体防弹衣应用。在本研究中，使用高强度超声辐射，合成了九种 STF，包括两种不同类型的二氧化硅纳米粒子（15nm 和 200nm）和聚乙二醇，在不同的重量分数下。对所得 STF 样品进行了流变学和热性能测试。讨论了该工艺的优缺点。
