Sonochemical synthesis and rheological properties of shear thickening silica dispersions.
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.
Hassan
Tarig A
TA
Materials Science and Engineering, Tuskegee University, Tuskegee, AL 36088, USA.
Rangari
Vijaya K
VK
Jeelani
Shaik
S
D053758:Nanoparticles / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D010316:Particle Size; D033081:Shear Strength / Q000528:radiation effects; D012822:Silicon Dioxide / Q000737:chemistry* / Q000528:radiation effects*; D013010:Sonication; D013696:Temperature; D044366:Transition Temperature; D014783:Viscosity
D012822:Silicon Dioxide