Processing of iron oxide-epoxy vinyl ester nanocomposites

2019-12-26 22:27:11

particles Iron epoxy ester oxide

责任者: Park, S.S.;Bernet, N.;De La Roche, S.;Hahn, H.T. 单位: Dept. of Mech. & Aerosp. Eng., UCLA, Los Angeles, CA, USA 来源出处: Journal of Composite Materials(J. Compos. Mater. (USA)),2003//,37(5):465-76 摘要: An ultrasonic method is used to disperse iron oxide particles of two different sizes in an epoxy vinyl ester resin. The dispersion quality is assessed from sedimentation, density measurements, and scanning electron micrographs. By varying parameters such as power and duration of sonication, optimum dispersion conditions are suggested. Dispersion is most effective in the early stage of sonication and becomes more difficult to improve later. Once separated, however, the particles do not come into direct contact with one another because of the steric hindrance. The nano-size (29 nm) particles delay curing whereas the larger (200 nm) particles do not. The results indicate a strong interaction between nanoparticles and the resin 关键词: curing;density;filled polymers;iron compounds;nanocomposites;nanoparticles;particle reinforced composites;particle size;polymers;scanning electron microscopy;sedimentation;ultrasonic effects;iron oxide-epoxy vinyl ester nanocomposites;ultrasonic method;disperse iron oxide particles;epoxy vinyl ester resin;dispersion quality;sedimentation;density measurements;scanning electron micrographs;sonication;optimum dispersion conditions;particle size;steric hindrance;nanosize particles;strong interaction;nanoparticles;resin;Fe2O3