低品位非金属矿制备多孔陶瓷及其吸音性能研究  

Preparation and Acoustic Properties of Porous Ceramic Prepared by Low Grade Non-metal Ore

作　　者：井强山[1] 唐旖天 田永尚 陈劲草 方林霞[1] JING Qiang-shan;TANG Yi-tian;TIAN Yong-shang;CHEN Jing-cao;FANG Lin-xia(Xinyang Normal University, Xinyang 464000, China;Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan Xinyang 464000, China)

机构地区：[1]信阳师范学院,河南省豫南非金属矿资源高效利用重点实验室,信阳464000

出　　处：《人工晶体学报》2017年第10期2008-2013,2044,共7页Journal of Synthetic Crystals

基　　金：河南省科技计划项目(162102310122)

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。Porous acoustic ceramic was prepared with magmatic soil,tuff and glass power as the main raw materials.Silicon carbide and straw powder were used as the foaming agent and pore-forming agent,respectively.Based on the thermal analysis of raw materials,single factor method was employed to study the effects of sintering temperatures,holding time,dosage of pore forming agent,amount of foaming agent,sample thickness,porosity and pore size on the properties of the sample sound absorption property.X-ray powder diffraction(XRD)and ultra depth of the field techniques were used to characterize the phase compositions and morphology of sintered samples.The results show that favorable performance of porous acoustic materials could be achieved by optimized conditions,with sinter at1150Tl for50min,the forming agent and pore-forming agent is1.4%and6%,and the sample thickness is30mm.For this optimal sample,the average sound absorption coefficient is0?34assess at the frequency of2004000Hz.Furthermore,the first sound absorption peak shifted to low frequency direction gradually when the sample thickness is increase.

关 键 词：岩浆土 凝灰岩 玻璃粉 发泡 吸音陶瓷 

分 类 号：TQ173[化学工程—搪瓷工业]