矿渣/偏高岭土基地质聚合物多孔材料制备与性能研究
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摘要
以矿渣和偏高岭土为主要原料,铝粉为发泡剂制备地质聚合物多孔材料。试验结果表明:当铝粉用量为0.05%,硬脂酸钾用量为0.4%,减水剂用量为0.15%时,地质聚合物多孔材料7 d抗压强度为4.29 MPa,孔隙率可达41.71%,材料整体工作性能最佳。地质聚合物多孔材料为无定形态,且耐碱性优于耐酸性。由于主孔平均尺寸为1.76 mm,孔结构较为发达,材料的72 h吸水率可达24.87%。
With slag and metakaolin as the main raw materials, aluminum powder as the foaming agent, the geological polymer porous materials were prepared.When aluminum powder content is 0.05%, potassium stearate content is 0.4%, and water reducer content is 0.15%, the compressive strength of geological polymer porous material at 7 days is 4.29 MPa, the porosity can reach 41.71%, and the overall performance of the material is the best. Geological polymer porous material is amorphous, and alkali resistance is better than acid resistance. Due to the average size of the main hole 1.76 mm, the hole structure is relatively developed, and the water absorption rate of the material at 72 hours can reach 24.87%.
With slag and metakaolin as the main raw materials, aluminum powder as the foaming agent, the geological polymer porous materials were prepared.When aluminum powder content is 0.05%, potassium stearate content is 0.4%, and water reducer content is 0.15%, the compressive strength of geological polymer porous material at 7 days is 4.29 MPa, the porosity can reach 41.71%, and the overall performance of the material is the best. Geological polymer porous material is amorphous, and alkali resistance is better than acid resistance. Due to the average size of the main hole 1.76 mm, the hole structure is relatively developed, and the water absorption rate of the material at 72 hours can reach 24.87%.
引文
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[3] DAVIDOVITS J. Geopolymers:man-made rock geosynthesis and the resulting development of very early high strength cement[J]. J Mater Educ, 1994, 16:91-139.
[4]罗新春.矿渣/偏高岭土基地聚合物材料的制备及其性能研究[D].景德镇:景德镇陶瓷大学,2016.
[5]黄竞霖,张锦,崔学民,等.吸水性地质聚合物多孔材料的制备与研究[J].陶瓷学报,2014,35(1):48-52.
[6]吴君.赤泥基地质聚合物多孔材料的制备及其吸附性能研究[D].南宁:广西大学,2016.
[7]刘颀,胡亚非,熊建军.石墨多孔材料孔隙率测定方法研究[J].润滑与密封,2010,35(10):99-101.
[8]薛彩红,铁生年,李小宁,等.发泡剂对偏高岭土基地质聚合物轻质材料性能影响[J].硅酸盐通报,2015,34(S1):123-126.
[9]祁冰,张长森.硅酸盐水泥基发泡水泥的试验研究[J].广东化工,2015,42(23):80-81,74.
[10]曾志镭.偏高岭土地质聚合物发泡材料的制备与研究[J].西部皮革,2016,38(16):20.
[11]李驰,方从启.低密度发泡水泥吸水性能的改性研究[J].新型建筑材料,2016,43(4):6-9.
[12]贾屹海. Na-粉煤灰地质聚合物制备与性能研究[D].北京:中国矿业大学(北京),2009.
[13]李盾兴.高强度偏高岭土基地质聚合物的制备及性能研究[D].太原:原理工大学,2017.