第26卷第2期2023年2月建筑材料学报JOURNALOFBUILDINGMATERIALSVol.26，No.2Feb.，2023微胶囊相变材料对砂浆热性能和力学性能的影响于文艳*，孟琦，童浩然（内蒙古工业大学土木工程学院，内蒙古呼和浩特010051）摘要：将微胶囊相变材料（MPCM）加入水泥砂浆中制成建筑储能砂浆，研究了储能砂浆的微观形貌、相变特性、热稳定性、导热系数、储热性能和力学性能.结果表明：储能砂浆的导热系数随MPCM含量的增加而降低；储能砂浆的MPCM芯材为固态时的导热系数大于其为液态时的导热系数；当MPCM含量为20%时，储能砂浆的内表面峰值温度较水泥砂浆降低3.1℃，达到峰值温度的时间比水泥砂浆延迟20.5min，其28d龄期硬化浆体的抗压强度为9.3MPa；储能砂浆具有足够的抗压强度和良好的储能调温能力，可用于建筑围护结构.关键词：微胶囊相变材料；储能砂浆；热性能；力学性能中图分类号：TU599文献标志码：Adoi：10.3969/j.issn.1007-9629.2023.02.015EffectofMicroencapsulatedPhaseChangeMaterialonThermalandMechanicalPropertiesofMortarYUWenyan*，MENGQi，TONGHaoran（CollegeofCivilEngineering，InnerMongoliaUniversityofTechnology，Hohhot010051，China）Abstract:Theenergystoragemortarforbuildingswasdevelopedbyincorporatingmicroencapsulatedphasechangematerial（MPCM）intocementmortar.Themicroscopicmorphology，phasechangecharacteristics，thermalstability，thermalconductivity，thermalandmechanicalpropertiesofenergystoragemortarwereinvestigated.TheresultsshowthatthethermalconductivityofenergystoragemortardecreaseswiththeincreaseofthecontentofMPCM.ThethermalconductivityoftheenergystoragemortarwithsolidMPCMisgreaterthanthatoftheenergystoragemortarwithliquidMPCM.Thepeaktemperatureoftheinnersurfaceoftheenergystoragemortarwith20%MPCMis3.1℃lowerthanthatofthecementmortar，thetimetoreachthepeaktemperatureis20.5minlaterthanthatofthecementmortar，andthecompressivestrengthofwhichattheageof28dis9.3MPa.Theenergystoragemortarcanbeusedinthebuildingenvelopeduetoitssufficientcompressivestrengthandgoodabilityofenergystorageandtemperatureregulation.Keywords:microencapsulatedphasechangematerial（MPCM）；energystoragemortar；thermalproperty；mechanicalproperty建筑围护结构中添加相...
