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偏高岭土基地聚合物制备及性能研究 被引量:2

Synthesis and Properties of Metakaolin Based Geopolymer
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摘要 选取n(SiO2):n(Al2O3)、n(Na2O):n(Al2O3)、n(H2O):n(Al2O3)摩尔比为因素设计正交实验,以高岭土为主要原料制备了偏高岭土基地聚合物。依据高岭土的TG-DSC曲线和地聚合物试样抗压强度确定高岭土最佳煅烧温度为800℃。根据正交实验抗压强度结果分析了各因素的影响规律,确定最佳配比为:n(SiO2):n(Al2O3)为4、n(Na2O):n(Al2O3)为0.8、n(H2o):n(Al2O3)为17。对试样进行XRD表征,结果表明,XRD在20°~40°出现非晶馒头峰,可见已合成一种“半晶态”物质。 The n(SiO2) : n(Al2O3), n(Na2) : n(Al2O3) and n(H2O) : n(Al2O3) molar ratios were investigated by orthogonal experiment. The metakaolin based geopolymer was synthesized by kaolin. The optimum calcination temperature of kaolin was 800 ~C based on the TG-DSC curve of kaolin and compressive strength of specimens. Based on compressive strength, the effects of the three molar ratios were analyzed, the optimum molar ratio was n(SiO2) : n(Al2O3) being 4, n(Na2O) : n(Al2O3) being 0.8, n(H2O) : n(Al2O3) being 17. X-ray Diffraction (XRD) was used to characterize the sample, the XRD analysis results indicated that the amorphous hump of metakaolin appeared at 20° -40°, a semi crystalline material was synthesized.
出处 《非金属矿》 CAS CSCD 北大核心 2014年第1期19-21,共3页 Non-Metallic Mines
基金 青海省科技厅应用基础研究项目(2013-Z-703)
关键词 偏高岭土 煅烧温度 地聚合物 抗压强度 metakaoline calcination temperature geopolymer compressive strength
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