Abstract: Objective: To prepare porous HAPw/n-ZnO granules fromHAPw/n-ZnO powder. Method: HAPw/n-ZnO powder was mixed with silicon sol and calcined at different temperatures. X-ray diffraction (XRD) analysis was used to determine the optimal reaction temperature for the mixture. To obtain granules with pore diameter at about 100-250um, polymethyl methacrylate (PMMA) and 30wt% of silica sol were respectively employed as pore-forming agent and binder. XRD, scanning electron microscope (SEM), universal testing machine, and Archimedes principle were employed to analyze the new material. Results: The mixture of silicon sol and HAPw/n-ZnO could react at the temperature higher than 600℃. Heat preservation at 600℃ for 2 hours led to the optimal porosity. 64.2% porosity could be obtained when pore-forming agent content was 40% (v:v), and the compression strength was 0.9MPa. Conclusion: Porous granular HAPw/n-ZnO composite material can be efficiently prepared by pore-forming agent method.

Key words: HAPw/n-ZnO materials, Pore-forming agent, Porous materials, PMMA