Preparation and Characterization of SnO_2/TiO_2 Composite with Low infrared Emissivity

摘要

SnO_2/TiO_2 composite material was prepared by use of microwave deposition method, on basis of tetrabutyl titanate(C_(16)H_(36)O_4Ti) and tin tetrachloride(SnCl_4) were used as source material and carbamide (CO(NH_2)_2) as precipitator. The characteristics of composite material were investigated by means of X-ray diffraction (XRD), scanning electron microscope(SEM) and Fourier transform infrared(FTIR). The result showed that optimization mol ratio of carbamide and metal elementary( Sn & Ti) was 2:1. SnO_2 adulteration counterworked TiO_2 crystal transformation and restrained rutile nucleation. Anatase TiO_2 grew up easily. SnCh content had been influence on composite material average emissivity at 8~14 ìm waveband. Mix proportion of composite material was achieved which emissivity was 0.3185.