采用低成本的通过废玻璃制备的空心微珠坯体为原料，经过低温烧结制备一种超轻高强多孔材料，研究了烧结温度、保温时间对样品孔结构和吸声性能的影响.结果表明，随着烧结温度的升高，样品的平均孔径尺寸逐渐增大，保温时间越长，样品的开孔气孔率越大；开孔气孔率越大，样品吸声性能越好；样品平均孔径尺寸的变化显著影响在中高频段的吸声性能，平均孔径尺寸为2．51 mm的样品，对于频率为1000 Hz的声波，吸声系数可达0．84.空心微珠多孔材料的平均吸声系数随着流阻的增大先增大后减小，当流阻值达到4．805×105 Pa.s/m3时，样品吸声性能最佳.
Highly porous materials with ultralow density and desirable strength were prepared by low-tempera-ture sintering of the hollow sphere body derived from waste glass.The influence of sintering temperature and holding time on pore structure and sound absorption property of the samples was researched.The results show that the average pore size increased gradually with the sintering temperature increased and the open porosity in-creased with the holding time extended;the sound absorption property of samples was better with increasing open porosity;the influence of the average pore size on sound absorption property in the range of middle and high frequency was more significant,and the sound absorption coefficient of samples with an average pore size of 2.51 mm reached 0.84 while the acoustic frequency was 1 000 Hz.The average sound absorption coefficient of porous materials increased at the beginning and then decreased with increasing the air-flow resistivity,and the best property of materials was obtained when the air-flow resistivity was 4.805×105 Pa.s/m3 .
参考文献
| [1] | Jorge P. Arenas;Malcolm J. Crocker.Recent Trends in Porous Sound-Absorbing Materials[J].Sound & Vibration,20107(7):12-17. |
| [2] | 杨晓鸿.空心玻珠保温涂料的研制[J].武汉工业学院学报,2003(02):75-76. |
| [3] | Geleil AS;Hall MM;Shelby JE.Hollow glass microspheres for use in radiation shielding[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,20066/7(6/7):620-625. |
| [4] | F.Blanco;P.Garcia;P.Mateos.Characteristics and properties of lightweight concrete manufactured with cenoshperes[J].Cement and Concrete Research,200011(11):1715-1722. |
| [5] | 牛同健;余娟丽;刘炜;董英鸽;胡胜亮;杨金龙.聚空心球对氧化铝陶瓷性能的影响[J].硅酸盐学报,2012(4):507-512. |
| [6] | Jia-Min Wu;Xiao-Yan Zhang;Jin-Long Yang.Novel porous Si_3N_4 ceramics prepared by aqueous gelcasting using Si_3N_4 poly-hollow microspheres as pore-forming agent[J].Journal of the European Ceramic Society,20145(5):1089-1096. |
| [7] | 尉海军;姚广春;王晓林;李兵;尹铫.铝硅闭孔泡沫铝吸声性能研究[J].功能材料,2006(12):2014-2018. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%