以淀粉和二氧化锰为发泡剂的赤泥-粉煤灰基泡沫陶瓷（英文）

发布时间：2018-03-13 03:30

本文选题：赤泥　切入点：粉煤灰　出处：《Transactions of Nonferrous Metals Society of China》2017年03期 　论文类型：期刊论文

【摘要】：分别以淀粉和二氧化锰分别为发泡剂,以硼酸钠为助溶剂,成功制备以赤泥和粉煤灰为主要原料的泡沫陶瓷。研究了淀粉或二氧化锰的含量对泡沫陶瓷中物相、孔形态及理化性能的影响。结果表明,以淀粉或二氧化锰为发泡剂制备的泡沫陶瓷的主晶相分别为Na_6(AlSiO_4)_6和Na_8(SiAlO_4)_6MnO_4;扫描电镜观察结果表明,发泡剂含量对泡沫陶瓷中气孔结构的形成起决定性作用;随着发泡剂含量的增加,泡沫陶瓷表现出优良的综合性能:体密度0.59~0.96 g/cm~3,气孔率41.82%~63.51%,吸水率3.16%~9.17%,抗压强度4.22~8.38 MPa,抗弯强度2.44~5.82MPa,耐酸性95.59%~99.60%和耐碱性99.82%~99.99%。所制备的泡沫陶瓷适合用作建筑物的隔热、保温、隔声与防火材料。
[Abstract]:Foam ceramics with red mud and fly ash as main raw materials were successfully prepared with starch and manganese dioxide as foaming agents and sodium borate as cosolvent respectively. The effect of starch or manganese dioxide content on the phase of foam ceramics was studied. Effects of pore morphology and physical and chemical properties. The results show that the main crystal phases of foam ceramics prepared with starch or manganese dioxide as foaming agent are Na_6(AlSiO_4)_6 and Na8SiAlO _ 4 respectively. The content of foaming agent plays a decisive role in the formation of pore structure in foam ceramics, and with the increase of foaming agent content, Foam ceramics show excellent comprehensive properties: bulk density 0.59 ~ 0.96 g / cm ~ (-3), porosity 41.82% and 63.51, water absorption 3.16 ~ 9.17%, compressive strength 4.22 ~ 8.38 MPA, flexural strength 2.44 ~ 5.82 MPa, resistance to acid 95.5999.60% and alkali resistance 99.822 ~ 99.99.The foam ceramics prepared by this method are suitable for thermal insulation and thermal insulation of buildings. Sound insulation and fire proof materials.
【作者单位】：中南大学材料科学与工程学院;
【基金】：Project(K1003027-11) supported by the Key Project Foundation of Science and Technology Plans of Changsha,China
【分类号】：TQ174.7

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