加气脱硫石膏保温材料的试验研究

关键字：脱硫石膏,加气,保温,导热系数

（天津城建大学 材料科学与工程学院，天津  300384）

    摘要：采用铝粉发气的方法制备加气脱硫石膏保温材料，系统研究了高铝水泥掺量、铝粉掺量、NaOH掺量、拌合水温度等对加气脱硫石膏保温材料性能的影响。研究结果表明：性能最佳的制备条件为高铝水泥掺量5%，铝粉掺量0.7%，NaOH掺量0.5%，水灰比0.6，拌合水温度40 ℃。最佳条件制备的加气脱硫石膏保温材料密度为309.3 kg/m3，抗压强度为0.24 MPa，导热系数为0.073 W/（m·K）。
    关键词：脱硫石膏；加气；保温；导热系数
    中图分类号：TU55+1.33      文献标识码：A       文章编号：1001-702X（2017）05-0096-05

Experimental study on thermal insulation material of aerated desulfurized gypsum
　　YU Haiyan，WANG Lei，LI Yongqiang，YANG Jiujun
（School of Materials Science and Engineering，Tianjin Chengjian University，Tianjin 300384，China）

    Abstract：Gypsum thermal insulation material for gypsum was prepared by the method of aluminum powder aeration. The effects of high aluminum cement content，aluminum powder content，NaOH content and mixed water temperature on the performance of gypsum thermal insulation material were systematically studied. The results show that the optimum preparation conditions were as follows：the content of high-alumina cement was 5%，the content of aluminum powder was 0.7%，the content of NaOH was 0.5%，the water-cement ratio was 0.6 and the water temperature was 40 ℃. FGD thermal insulation material prepared in optimal conditions has a bulk density of 309.3 kg/m3，strength of 0.24 MPa，and thermal conductivity of 0.073 W/（m·K）.
    Key words：desulfurized gypsum，aerated，thermal insulation，thermal conductivity