高孔隙率中华麦饭石矿化球的制备与评价
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摘要
以中华麦饭石为主要原料,添加造孔剂PMMA和稳定剂CMC来制备多孔中华麦饭石矿化陶瓷球。利用SEM观察其微观形貌,使用阿基米德法测定其孔隙率和体积密度,并通过其在纯水中TDS、pH以及溶出元素的数量和种类变化,综合评价应用效果。结果表明,当造孔剂含量为0.9wt.%时,其强度、造孔效果都较佳,矿化度和元素溶出量都达到最高值,此时孔隙率可达93.71%,体积密度为1.36 g/cm~3,抗弯强度为22.51 MPa;同时验证了中华麦饭石具有双向调节水中pH,并且可使纯净水达到健康饮用水的弱碱性要求。
Porous Chinese medical stone mineralized ceramic balls were prepared with Chinese medical stone as the main raw material, CMC as the stabilizer and PMMA as the pore forming agent. The micro-morphology was observed through SEM, the porosity and volume density were measured by Archimedes method, and the application effect was comprehensively evaluated through the changes of TDS, PH and the number and types of dissolved elements in pure water. The results show that, when the content of the pore-forming agent is 0.9 wt.%, its strength and poreforming effect are better, both the mineralization and the elemental dissolution reach the maximum. At this point, the porosity can reach 93.71%, the volume density is 1.36 g/cm~3, and the flexural strength is 22.51 MPa. It can be seen that the Chinese medical stone mineralized balls can adjust the p H of water in both directions and make the pure water meet the alkalescent requirement for healthy drinking.
Porous Chinese medical stone mineralized ceramic balls were prepared with Chinese medical stone as the main raw material, CMC as the stabilizer and PMMA as the pore forming agent. The micro-morphology was observed through SEM, the porosity and volume density were measured by Archimedes method, and the application effect was comprehensively evaluated through the changes of TDS, PH and the number and types of dissolved elements in pure water. The results show that, when the content of the pore-forming agent is 0.9 wt.%, its strength and poreforming effect are better, both the mineralization and the elemental dissolution reach the maximum. At this point, the porosity can reach 93.71%, the volume density is 1.36 g/cm~3, and the flexural strength is 22.51 MPa. It can be seen that the Chinese medical stone mineralized balls can adjust the p H of water in both directions and make the pure water meet the alkalescent requirement for healthy drinking.
引文
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[7]李家科,刘欣,方文敏,等.果壳粉作造孔剂制备SiOC块体多孔陶瓷[J].陶瓷学报, 2017, 38(4):553-558.
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[2]黄凤萍,李缨.一种多孔抗菌麦饭石矿化陶瓷球的研究[J].陶瓷, 2006,(5):15-16.
[3]朱时珍,赵振波,刘庆国.多孔陶瓷材料的制备技术[J].材料科学与工程, 1996,(3).
[4]张浩,王娜,邓倩,等.基于改性纳米结晶纤维素的多孔陶瓷孔隙结构及抗压强度研究[J].陶瓷学报, 2016, 37(3):265-270.
[5] ShaoDM,ZhangPP,MaLY,etal.Preparationand characteristics of porous ceramics[J]. Global Geology, 2007,10(2):166-170.
[6]王子晨,郭兴忠,朱林,等.竹炭和硅溶胶为造孔剂制备多孔碳化硅陶瓷[J].陶瓷学报, 2016, 37(6):668-672.
[7]李家科,刘欣,方文敏,等.果壳粉作造孔剂制备SiOC块体多孔陶瓷[J].陶瓷学报, 2017, 38(4):553-558.
[8]范益群,漆虹,徐南平.多孔陶瓷膜制备技术研究进展[J].化工学报, 2013,(1):107-115.
[9]韩非,陈宇红,马建军.造孔剂羧甲基纤维素(CMC)对制备多孔碳化硅陶瓷的影响[J].广州化工, 2011, 39(5):72-73.
[10]吴诚,张勇林,税安泽,等.高温烟气过滤陶瓷的制备与性能研究[J].人工晶体学报, 2013, 42(9):1930-1935.