Effect of SnO₂ and Sb-doped SnO₂ on the structure and electrical conductivity of epichlorohydrin rubber

Abstract

Nanosized Sb doped SnO 2 (ATO) particles were successfully synthesized. Electrically conducting rubbery composites based on epichlorohydrin rubber (ECO) and two kinds of conductive fillers (SnO 2 and ATO) were prepared by a conventional blending method. The morphology, structure and electrical conductivity of ECO/SnO 2 and ECO/ATO composites were investigated. Results showed that SnO 2 and ATO had great influence on the structure of ECO composite. Besides, the addition of oxide particles enhanced its electrical conductivity significantly. The electrical conductivity of ECO/ATO composite appeared an obvious threshold value with the variation of the loading amount of ATO fillers, whereas the resistivity of ECO filled with SnO 2 decreased monotonically with the increasing SnO 2 . The temperature dependence of resistivity indicated that the ECO/SnO 2 and ECO/ATO composites exhibited a negative temperature coefficient (NTC) effect. Scanning electron microscopy (SEM) was used to investigate the morphological states of oxide fillers in ECO matrix, and specifically continuous networks were observed. POLYM.

Enhancement of infrared shielding property of SnO2 using Sb as a dopant

“…The different methods used for the preparation of ATO nanoparticles are sonochemical method [15], hydrothermal method [16], co-precipitation method [17], sol-gel method [18], nanoparticle deposition method [19] and solvothermal method [20]. The sol-gel method is suitable for the fabrication of metal oxide nanoparticles with large dispersion and fine distribution, and they are widely employed for the manufacture of tin oxide nanoparticles [7].…”