Research On The Preparation And Performance Of MicroPCMs Foam Cement Composite Insulation Material

In this paper,based on the existing research on phase change microcapsules and foamed cement,we investigate the cases of composite insulation materials,summarize the existing research profile and future development trend,and propose the composite insulation materials of phase change microcapsules and foamed cement for the problem.By preparing the composite thermal insulation material with different mass fraction of phase change microcapsule foamed cement in laboratory,discussing its preparation process,discussing the macro structure,micro structure and physical properties of the composite thermal insulation material by using formula calculation and instrument measurement method;further constructing a phase change microcapsule foamed cement enclosure structure heat transfer characteristics experimental bench,discussing the heat transfer of phase change microcapsule foamed cement enclosure structure Based on the measured values of the physical parameters of the experimental materials,the building model containing phase change microencapsulated foamed cement composite insulation material is constructed and its energy consumption is simulated,and the adaptability of the phase change microencapsulated foamed cement composite insulation material in different climate zones is analyzed by selecting urban weather documents and construction practices in different climate zones,and the adaptability of the phase change microencapsulated foamed cement composite insulation material in different climate zones is further analyzed.The mass fraction,application position and phase change temperature of phase change microencapsulated foamed cement composite insulation materials are discussed and optimized to explore the influence law of relevant elements on building energy consumption;finally,the results of the selection of relevant elements of phase change microencapsulated foamed cement composite insulation materials are integrated to evaluate their energy saving benefits as well as environmental benefits to provide theoretical support for the development of green low-carbon buildings in China.The specific contents are as follows.1.Preparation of phase change microencapsulated foamed cement composite insulation material and parameter measurementThrough the experimental preparation of phase change microcapsule foamed cement composite insulation material,analysis of the preparation process and each component raw materials proposed preparation method.And through experimental and numerical analysis methods to analyze the macrostructure,microstructure,dry density,thermal conductivity and other related material properties of phase change microencapsulated foamed cement composite insulation materials under different proportioning schemes,to provide data support for subsequent research.2.Analysis of heat transfer characteristics of phase change microencapsulated foamed cement composite thermal insulation material enclosure structureDesign and build the experimental platform for the heat transfer characteristics of phase change microencapsulated foamed cement enclosure structure and establish the test room.Compare the heat insulation performance of common enclosure structure and phase change enclosure structure,and discuss the influence of phase change microcapsule material on the heat transfer characteristics of foamed cement insulation material.The model is verified by experiments,and the unsteady heat transfer mechanism of cement-based enclosure containing phase change materials is discussed by integrating experimental data and simulation results,and the heat transfer law of phase change enclosure is summarized.3.Energy saving optimization of phase change microencapsulated foam cement composite insulation materials in different climate zonesEnergy Plus energy consumption simulation software is used to analyze the energy saving of buildings containing phase change microencapsulated foamed cement materials and to explore the influence of composite insulation materials on building energy consumption.By analyzing the influence of different phase change temperature,climate zone of the building and different construction levels on the energy consumption of the building,the influence law of relevant elements on energy saving is summarized,which provides guidance for the adaptability of phase change microencapsulated foamed cement composite insulation materials in different climate zones and the application in actual projects.4.Benefit assessment of phase change microencapsulated foamed cementIn order to further quantitatively evaluate the comprehensive benefits of phase change microencapsulated foamed cement,the energy-saving benefits are calculated by combining the results of the optimization of each energy-saving element.Based on the results of the energysaving benefit analysis,the environmental benefits are further discussed,and the carbon emission calculation method is used to compare the life-cycle carbon emissions of buildings containing phase change microencapsulated foamed cement and ordinary foamed cement,so as to provide a solid material basis and theoretical support for the realization of the concept of green low-carbon building development.