Polymer Research Center, Department of Chemical Engineering, Razi University, Kermanshah, Iran
Abstract
This research work focuses on the performance optimization of composites containing both micron and nano size TiO 2 particles separately in various concentrations and to understand the role of each on the thermal stability and moduli of the composites. Thermal stability of the particle-reinforced composites increased on increasing the concentration of TiO 2, both in nano and micron filled cases, except for the 2.5 wt% nano-filled composite. Storage modulus (E') increased on adding micron-TiO2 to the epoxy hardener resin system from 1 - 2.5 - 5 wt% respectively and decreased dramatically on further increasing the micron TiO 2 content to 7.5 and 10 wt% respectively. Nano TiO 2 particle-reinforced composites showed an increasing trend of storage modulus for 2.5 - 5 - 7.5 wt% TiO 2 filled composites with respect to the neat resin system. Presence of both micron and nano TiO2 particles increased the T g of the composites. Also, the effect of sonication on the modulus and Tg is discussed. As a whole, composites in which the TiO 2 particles were dispersed through the resin matrix by glass rod revealed better results (higher storage moduli and T g) than those mixed by sonication, due to high viscosity of the epoxy resin used.
Rajabi,L. , Mohammadi,Z. and Derakhshan,A. A. (2013). Thermal Stability and Dynamic Mechanical Properties of Nano and Micron-TiO2 Particles Reinforced Epoxy Composites: Effect of Mixing Method. Iranian Journal of Chemical Engineering (IJChE), 10(1), 16-29.
MLA
Rajabi,L. , , Mohammadi,Z. , and Derakhshan,A. A. . "Thermal Stability and Dynamic Mechanical Properties of Nano and Micron-TiO2 Particles Reinforced Epoxy Composites: Effect of Mixing Method", Iranian Journal of Chemical Engineering (IJChE), 10, 1, 2013, 16-29.
HARVARD
Rajabi L., Mohammadi Z., Derakhshan A. A. (2013). 'Thermal Stability and Dynamic Mechanical Properties of Nano and Micron-TiO2 Particles Reinforced Epoxy Composites: Effect of Mixing Method', Iranian Journal of Chemical Engineering (IJChE), 10(1), pp. 16-29.
CHICAGO
L. Rajabi, Z. Mohammadi and A. A. Derakhshan, "Thermal Stability and Dynamic Mechanical Properties of Nano and Micron-TiO2 Particles Reinforced Epoxy Composites: Effect of Mixing Method," Iranian Journal of Chemical Engineering (IJChE), 10 1 (2013): 16-29,
VANCOUVER
Rajabi L., Mohammadi Z., Derakhshan A. A. Thermal Stability and Dynamic Mechanical Properties of Nano and Micron-TiO2 Particles Reinforced Epoxy Composites: Effect of Mixing Method. IJChE, 2013; 10(1): 16-29.
