Preparation and Characterization of Anatine TiO2/Expanded Graphite with High Expansion Volume

Abstract

Abstract Element of Ti was introduced to expandable graphite surface by Sol-gel method; TiO2/expanded graphite was prepared after expansion of high temperatures. Detection by scanning electron microscope(SEM), X-ray diffraction(XRD), energy disperse spectroscopy(EDS) and differential scanning calorimetry(DSC) to semples, the results were founded: The better process conditions with high expansion volume are as follows: graphite that particle size is more than 180μm, expansion temperature is about 650°C-750°C. The contents of Ti in compounds of anatine TiO2/expanded graphite can be reached 3.16%; the volume of compounds can be reached 234ml/g. The results showed that the lower temperature and smaller particle size of graphite is benefit for anatine type of TiO2, but higher temperature is good to high expansion volume. The preparation condition should be balanced with crystal type, heat loss and expansion volume.