文档介绍：中文摘要本文以Si02、H3803、ROH和A1203等化学纯料为主要原料(其中Si02是从粉煤灰的精细化利用中提取出的,比表面积为334m2儋),通过成分设计,在 1000℃以下的较低温度制备出了硼硅酸盐泡沫玻璃;研究了发泡剂、添加剂、烧成制度、配合料粒度和成型压力对气孔结构和性能的影响。运用扫描电子显微镜观察样品的气泡孔径、形状和分布。利用X射线衍射仪,对样品的物相进行分析。测试了样品的体积密度、体积吸水率、抗压强度和耐腐蚀性能。实验结果表明,发泡温度为750℃,发泡时间为30min时,Si02含量质量百分比在50%~65%之间的配合料均可以熔融发泡形成泡沫玻璃。在碱含量一定的情况下,随着H3803代替Si02的增多,泡沫玻璃粘度降低,孔径和体积吸水率变大,但玻璃密实化使总气孔率降低,密度增大,抗压强度提高。泡沫玻璃的耐腐蚀性随着H3803含量的增多而降低。 C粉、CaC03和石墨均可作为低温发泡剂,三者相比较,以C粉和石墨做发泡剂的样品气孔结构多为闭气孔,且气孔结构均匀,耐腐蚀性好,以CaC03做发泡剂的样品通孔、大孔居多,耐腐蚀性差。 Mn02可以促进硼硅酸盐泡沫玻璃发泡,含量质量百分比为2%,%,%。当含量达到4%时,出现Mn203晶相,连通气孔和开口气孔增多。用ZnO代替部分ROH, 增大了硼硅酸盐泡沫玻璃的发泡粘度,致使孔径减小,抗压强度提高。添加 6%ZnO的配合料在800℃发泡30min后得到的样品,有方石英晶相析出,孔径 ,,%,,耐腐蚀性测试质量变化率为0%。实验还对工艺参数的影响进行了研究,结果表明:发泡温度为750℃、发泡时间为30min,成型压力1-4MPa时,可以制得气孔分布均匀的泡沫玻璃。另外, 本实验对配合料粒度的研究表明,粒度愈细,得到的样品孔径愈小、密度愈大、体积吸水率愈低、气孔结构愈均匀。关键词: 泡沫玻璃硼硅酸盐发泡剂添加剂 ABSTRACT In this study,borosilicate foam glasses were fabricated using designed appropriate amount ofH3803,ROH,A1203,and Si02(specific surfacearea:334m2/g) which derived from the fly ash refine,and effects offoaming agent,additive, granularity ofbatch,forming pressure aswell asfiringsystem on foam structure and properties were alsoreported sequentially ,distribution,shape ofthe foams were曲served bySEM,the position was obtained through analyzing theXRD paRem ofsample,and bulkdensity,water pressive strength andcorrosion resistancewere alsotested. Experiment resultsindicated:the glass insteadofcrystallinephase was prepared utilizing thebatch of50%'--65%weight percent Si02 when holding 30rain atfoaming temperature of750℃.With theincrease ofH3803 content atexpense ofSi02,the diameter and water absorption became bigger as a sequence oflower viscosity of glass,however totalporosity decreased,density increased pressive strength was improved due to densification resistance offoam glass weakened as afunction ofincreasing H3803 content. The carbon powder,carbonate andgraphite could al