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OALib Journal期刊
ISSN: 2333-9721
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纳米al2o3复合铝酸盐水泥基储热材料的性能
DOI: 10.3969/j.issn.1671-7627.2014.04.005, PP. 24-28
Keywords: 纳米al2o3,水泥基储热材料,热性能,力学性能
Abstract:
研究不同掺量的纳米al2o3(平均粒径为80nm)和不同热处理温度(105、350和900℃)对铝酸盐水泥基复合储热材料的热学性能(体积热容、热导率和热膨胀系数)和力学性能(抗压强度)的影响。采用x线衍射仪(xrd)和场发射扫描电子显微镜(fesem)分别表征水化浆体内产物的物相和形貌变化。结果表明:当纳米al2o3的质量分数为5%时,纳米al2o3复合浆体的热容、热导率和抗压强度相对较高;随着温度的升高,纳米al2o3复合浆体的热容、热导率和抗压强度都有一定程度的下降;在350和900℃热处理后,纳米al2o3复合浆体的热容、热导率和抗压强度高于纯浆体。
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