利用膨胀珍珠岩制备轻质矿物聚合材料的实验研究

Preparation of Lightweight Geopolymer from Inflated Pearlite:an Experimental Study

以膨胀珍珠岩为主要原料 ,天津蓟县白云质泥岩焙烧熟料作配料 ,掺以少量的偏高岭石或粉煤灰制备了膨胀珍珠岩轻质矿物聚合材料。制品性能符合国家标准GB T 1 0 30 3— 2 0 0 1 35 0号合格品的技术指标。讨论了物料配比、成型压力、粒度级配以及固化反应温度和反应时间等因素对制品性能的影响 ,得出了优化的工艺条件为 :固 液 (质量比 ) =2 ,珍珠岩 /熟料 (质量比 ) =3;或固 /液 (质量比 ) =2 ,珍珠岩 /熟料 (质量比 ) =4 ,偏高岭石 /熟料 (质量比 ) =0 4。红外光谱分析显示铝硅酸盐凝胶相脱水固化而形成的基体相很可能具有与蛋白石相类似的微观结构。

Inflated pearlite and calcined aluminosilicate(dolomitic mudstone) was used as main materials to prepare lightweight geopolymer with addition of a small quantity of fly ash or calcined kaolin in this study.The product's property achieved Inflated pearlite insulation product China standard(GB/T10303-2001).Influence of several affecting factors such as material blending ratio,forming pressure,granulity gradation and temperature and time of solidifying reaction etc.on product's performance were discussed,It showed that the optimized processing condition was as follows:solid/liquid(in mass)2, pearlite/clinker(in mass) 3 and calcined kaolin/clinker(in mass) 0 or solid/liquid(in mass) 2,pearlite/clinker(in mass) 4 and calcined kaolin/cliner(in mass) 0^4.Infrared spectrum analysis show that the matrix formed by aluminosilicate gel phase probably has the similar microstructure of gelite.