低品位非金属矿制备多孔陶瓷及其吸音性能研究
发布时间：2018-11-24 20:48
【摘要】：以岩浆土、凝灰岩和玻璃粉为主要原料,以碳化硅和稻草粉分别为发泡剂和造孔剂制备多孔吸音陶瓷。结合原料热分析结果,运用单因素研究法考查了烧结温度、保温时间、造孔剂用量、发泡剂用量、样品厚度及显气孔率和孔径对多孔陶瓷材料吸音性能的影响。采用XRD和超景深显微技术对材料的晶相结构和形貌进行表征。结果表明,在烧结温度1150℃、保温时间50 min、发泡剂和造孔剂用量分别为原料质量的1.4%和6%、样品厚度30 mm时制备的材料性能最优,即在200~4000 Hz下材料平均吸音系数为0.34;此外,随着样品厚度的增加,第一吸收峰频率由高频向低频方向移动。
[Abstract]:Porous acoustical ceramics were prepared from magmatic soil tuff and glass powder with silicon carbide and straw powder as foaming agent and pore-making agent respectively. Combined with the results of thermal analysis of raw materials, the effects of sintering temperature, holding time, amount of pore-making agent, amount of foaming agent, thickness of sample, apparent porosity and pore size on the sound absorption properties of porous ceramic materials were investigated by single factor method. The crystal structure and morphology of the material were characterized by XRD and hyperfield microscopy. The results show that when sintering temperature is 1150 鈩，
本文编号：2354998
[Abstract]:Porous acoustical ceramics were prepared from magmatic soil tuff and glass powder with silicon carbide and straw powder as foaming agent and pore-making agent respectively. Combined with the results of thermal analysis of raw materials, the effects of sintering temperature, holding time, amount of pore-making agent, amount of foaming agent, thickness of sample, apparent porosity and pore size on the sound absorption properties of porous ceramic materials were investigated by single factor method. The crystal structure and morphology of the material were characterized by XRD and hyperfield microscopy. The results show that when sintering temperature is 1150 鈩，
本文编号：2354998
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