摘要
相变储能材料能够有效降低建筑系统的能耗,将研制的新型相变复合材料掺入到砂浆中制备出相变储能砂浆,重点考察了相变复合材料掺量对砂浆力学性能(表观密度、吸水率、抗压强度、抗折强度和软化系数)和热学性能(导热系数和比热容)的影响。结果表明:随着相变储能砂浆中新型相变复合材料掺量的逐渐增大,试样的吸水率逐渐增大,其余各项参数均逐渐减小。当新型相变复合材料的掺量达到30%时,砂浆试样的表观密度为2 007.6 kg·m^(-3),软化系数为0.87,吸水率为11.65%,导热系数为0.97 W·m^(-1)·K^(-1),抗压强度为25.8 MPa,抗折强度为5.7 MPa,比热容为0.85 k J·kg^(-1)·K^(-1),砂浆试样的力学性能和热学性能均能满足相关标准的要求。研究的新型相变复合材料可以应用于建筑节能降耗系统中,达到降低建筑能耗的目的。
Phase change energy storage materials can effectively reduce the energy consumption of building systems.A new type of phase change composite material was developed and added to mortar to prepare phase change energy storage mortar.The focus was on investigating the effects of phase change composite material content on the mechanical properties (apparent density,water absorption,compressive strength,flexural strength,and softening coefficient) and thermal properties (thermal conductivity and specific heat capacity) of mortar.The experimental results showed that as the content of new phase change composite materials in phase change energy storage mortar gradually increased,the water absorption rate of the specimen gradually increased,while the other parameters gradually decreased.When the content of the new phase change composite material reached 30%,the apparent density of the mortar specimen was2 007.6 kg·m^(-3),the softening coefficient was 0.87,the water absorption rate was 11.65%,the thermal conductivity coefficient was 0.97 W·m^(-1)·K^(-1),the compressive strength was 25.8 MPa,the flexural strength was 5.7 MPa,and the specific heat capacity was 0.85 k J·kg^(-1)·K^(-1).The mechanical and thermal properties of the mortar specimen met the requirements of relevant standards.The new phase change composite materials can be applied to energy-saving and consumption reducing systems in buildings,achieving the goal of reducing building energy consumption.
作者
王洲杰
黄艳妮
WANG Zhoujie;HUANG Yanni(Shaanxi Polytechnic Institute,Xianyang Shaanxi 712000,China)
出处
《当代化工》
CAS
2024年第7期1605-1608,1613,共5页
Contemporary Chemical Industry
基金
国家自然科学基金面上项目(项目编号:52078407)。
关键词
建筑材料
节能降耗
相变复合材料
储能砂浆
力学性能
热学性能
Building materials
Energy conservation and consumption reduction
Phase change composite materials
Energy storage mortar
Mechanical properties
Thermal properties
