摘要
以硅酸钠、二氧化硅为主要原料,氟硅酸钠为添加材料的复合浆体材料对相变蓄能材料进行了包覆,制备具有固定外观形状的固—液相变材料。采用不同实验配方进行包覆后,选择具有较好表观特征的配方进行力学和热力学测试,测试结果表明,以硅酸钠10 ml,二氧化硅3 g为主要原料,氟硅酸钠2 g,氧化镁1 g,盐酸1ml为添加材料配比的复合浆体材料是良好的包覆材料,包覆后的相变材料的维氏硬度为573 kg/mm2,相变焓为114.37 kJ/kg。
To take sodium silicate and silicon dioxide as main ran, materials and take sodium fluorosilicate as addition materials, the phase change cooling storage material was claded by the composite materials paste and a solid-liquid phase change material with fixed shape was prepared. After cladding with different raw and covered materials, component which has the better apparent cbaracteristic was selected to make mechanical test and thermodynamics test. The test results indicate that the best components are made up of the main raw materials including sodium silicate of 10ml and silicon dioxide of 3g, tbe better cladding materials includling sodium silicofluoride of 2g, magnesium oxide of lg and hydrochloric acid of 1ml. The Vicken-hardness of the cladding phase change material is 573 kg/mm^2 and the phase change enthalpy is 114.37 kJ/kg.
出处
《建筑节能》
CAS
2008年第1期44-46,共3页
BUILDING ENERGY EFFICIENCY
关键词
相变材料
硅酸钠
包覆
维氏硬度
phase change material
sodium silicate
cladding
Vickers-hardness
