利用淤泥制备隔热材料  

Preparation of thermal insulation material from sludge

作　　者：李晓生[1] 林蔚[1] 崔超 程丽颖 李思宇 王巧燕 LI Xiaosheng;LIN Wei;CUI Chao;CHENG Liying;LI Siyu;WANG Qiaoyan(School of Materials Science and Engineering,Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学材料科学与工程学院,黑龙江齐齐哈尔161006

出　　处：《高师理科学刊》2021年第12期67-70,80,共5页Journal of Science of Teachers＇College and University

基　　金：黑龙江省大学生创新创业训练项目(202110232128);齐齐哈尔大学创新创业训练项目(202110232635,202110232638)。

摘　　要：采用粉煤灰、废玻璃、淤泥等材料代替天然硅酸铝质原料,经过高温烧成制备了隔热材料.通过X射线衍射(XRD)分析、扫描电镜(SEM)观察、N_(2)吸附-脱附分析(BET)表征样品的结构、形貌、平均孔径和比表面积.结果表明,淤泥的造孔效果优于碳酸钙,气孔率随淤泥加入量增加呈增加趋势,在保证强度的前提下,最大气孔率可达43.7%,微米孔孔径在10~40μm之间,纳米孔平均孔径为167.8 nm,导热系数可达到0.07435 W/m^(2)·K.Thermal insulation material was prepared by high temperature sintering process using fly ash,waste glass,sludge and other materials instead of natural aluminum silicate raw materials.The structure,morphology and average pore size as well as specific surface area of the samples were characterized by x-ray diffraction(XRD)analysis,scanning electron microscopy(SEM)observation and N_(2) adsorption-desorption analysis(BET).The results show that the pore-forming performance of silt is better than that of calcium carbonate.The porosity increases with the increase of silt addition.The maximum porosity can reach 43.7% under the premise of maintaining the intensity.The micro-pore is between 10 and 40μm in diameter,and the nano-pore average pore diameter is 167.8 nm.The thermal conductivity is 0.07435 W/m^(2)·K.

关 键 词：隔热材料 淤泥 气孔率 导热系数 

分 类 号：P619.27[天文地球—矿床学]