骨料掺量对硅气凝胶砂浆性能的实验研究
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摘要
为研制新型环境友好型建筑保温隔热材料,试验探讨了不同骨料(气凝胶+砂)掺量对SiO_2气凝胶保温隔热砂浆性能的影响。基于体积法设计砂浆配合比,其中骨料体积取总体积的50%,55%,60%,65%,70%,气凝胶体积取骨料体积的60%。结果表明:当骨料掺量为60%时,导热系数最低为0.15 W/(m·k),密度为1 243 kg/m~3,28 d的抗压、抗折强度为9.14 MPa和3.14 MPa,吸水率为16.6%。采用扫描电镜SEM法对砂浆的微观结构进行了分析,从微观角度验证了保温隔热砂浆的基本性能。
In order to develop a new environment-friendly building insulation material, the influence of differentaggregrate contents(aerogel+sand) on SiO_2 aerogel insulation mortar performance was investigated.Using the volume method, the mortar mix proportion was designed, in which the total volume of aerogel and sand are 50%,55%, 60%,65%,70%, with a fixed aerogel volume ratio of 60%. The results indicated a compressive strength and flexural tensile strength of 9.14 MPa and 3.14 MPa, a density of 1 243 kg/m~3, a water absorption of 16.6%, a thermal conductivity of 0.15 W/(m·k) at the aerogel content of 60%. Using SEM to analyse the microstructure of the thermal insulation mortar, the basic properties of thermal insulation mortar were verified from the microscopic point of view.
In order to develop a new environment-friendly building insulation material, the influence of differentaggregrate contents(aerogel+sand) on SiO_2 aerogel insulation mortar performance was investigated.Using the volume method, the mortar mix proportion was designed, in which the total volume of aerogel and sand are 50%,55%, 60%,65%,70%, with a fixed aerogel volume ratio of 60%. The results indicated a compressive strength and flexural tensile strength of 9.14 MPa and 3.14 MPa, a density of 1 243 kg/m~3, a water absorption of 16.6%, a thermal conductivity of 0.15 W/(m·k) at the aerogel content of 60%. Using SEM to analyse the microstructure of the thermal insulation mortar, the basic properties of thermal insulation mortar were verified from the microscopic point of view.
引文
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[10]RATKE L.Herstellung und eigenschaften eines neuen leichtbetons[J].Aerogel Betonund Stahlbetonbau,2008,103:236-243.
[11]王飞,刘朝辉,邓智平,等.不同体积掺量的SiO2气凝胶对砂浆性能的影响[J].功能材料,2016(4):64-68.
[12]王欢,吴会军,丁云飞.气凝胶透光隔热材料在建筑节能玻璃中的研究及应用进展[J].建筑节能,2010(4):35-37.
[13]郭金涛.硅气凝胶/玻化微珠复合保温砂浆研究[D].西安:长安大学,2011.
[14]王飞,刘朝辉,叶圣天,等.SiO2气凝胶保温隔热材料在建筑节能技术中的应用[J].表面技术,2016,45(2):144-150.
[2]王立久,孟多.有机相变材料的建筑节能应用和研究[J].材料导报,2009,23(1):97-100.
[3]王晓婷.石膏装饰吸声板与矿物棉装饰吸声板对比分析趋势[J].工业技术,2012(11):73-74.
[4]丁向群,张冷庆,鲁中举.膨胀珍珠岩保温材料的制备与性能[J].沈阳建筑大学学报,2014,30(1):121-125.
[5]刘素芳,石磊,郑方园.聚苯乙烯泡沫塑料在建筑设计中的应用[J].塑料工业,2016,44(12):95-98.
[6]杨凯,庞佳伟,吴伯荣,等.二氧化硅气凝胶改性方法及研究进展[J].北京理工大学学报,2009,29(9):834-837.
[7]秦国彤,门薇薇,魏微,等.气凝胶研究进展[J].材料科学与工程学报,2005,23(2):294-296.
[8]KIM S,SEO J. Chemical retreating for geltyped aerogel and insulation performance of cement containing aerogel[J].Construction and Building Materials,2013,40:501-505.
[9]姚梦佳,李春福,何俊波,等.隔热保温涂料的研究发展及应用[J].表面技术,2015,44(7):61-67.
[10]RATKE L.Herstellung und eigenschaften eines neuen leichtbetons[J].Aerogel Betonund Stahlbetonbau,2008,103:236-243.
[11]王飞,刘朝辉,邓智平,等.不同体积掺量的SiO2气凝胶对砂浆性能的影响[J].功能材料,2016(4):64-68.
[12]王欢,吴会军,丁云飞.气凝胶透光隔热材料在建筑节能玻璃中的研究及应用进展[J].建筑节能,2010(4):35-37.
[13]郭金涛.硅气凝胶/玻化微珠复合保温砂浆研究[D].西安:长安大学,2011.
[14]王飞,刘朝辉,叶圣天,等.SiO2气凝胶保温隔热材料在建筑节能技术中的应用[J].表面技术,2016,45(2):144-150.
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