不同温度条件下相变石蜡力学性能分析  

Analysis on Mechanical Properties of Phase Change Paraffin under Different Temperature Conditions

作　　者：马令勇[1,2] 符恩民 姜伟[2,3] 申若涵 刘艳东 李清[1,2] 刘功良[2,3] 郭巍[2,3] MA Lingyong;FU Enmin;JIANG Wei;SHEN Ruohan;LIU Yandong;LI Qing;LIU Gongliang;GUO Wei(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing Heilongjiang 163318,China;Heilongjiang Provincial Key Laboratory of Thermal Utilization and Disaster Reduction of New Energy in Cold Regions,Northeast Petroleum University,Daqing Heilongjiang 163318,China;College of Civil Engineering and Water Conservancy,Heilongjiang Bayi Agricultural University,Daqing Heilongjiang 163319,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318 [2]东北石油大学黑龙江省寒区新能源热利用及防灾减灾重点实验室,黑龙江大庆163318 [3]黑龙江八一农垦大学土木水利学院,黑龙江大庆163319

出　　处：《当代化工》2024年第8期1838-1845,共8页Contemporary Chemical Industry

基　　金：黑龙江省重点研发计划指导项目(项目编号:GZ20220028);黑龙江省自然科学基金项目(项目编号:LH2021E022);黑龙江八一农垦大学“三纵”科研支持计划项目(项目编号:ZRCPY202225);大庆市指导性科技计划项目(项目编号:ZD-2023-58)。

摘　　要：对3种不同相变温度的石蜡材料(PCM-28、PCM-18和PCM-10)在不同温度下的基本力学性能参数进行了系统的压缩实验,计算出对应的弹性模量和泊松比。结果表明:PCM-18和PCM-10的抗压强度随温度的降低而有所提高,但PCM-28的抗压强度随温度的降低反而呈现出下降趋势。在单轴压缩条件下PCM-28和PCM-18的应力-应变曲线主要经历了压实阶段、弹性变形阶段、裂纹扩展阶段和裂纹后破坏阶段4个明显阶段,最终表现为脆性破坏。PCM-10在经历压实阶段和弹性变形阶段后进入塑性阶段,曲线发展近似水平,且整个过程无明显裂纹出现。A systematic compression experiment was conducted to determine the basic mechanical property parameters of three different phase change paraffin materials(PCM-28,PCM-18,and PCM-10)at various temperatures.The corresponding elastic modulus and Poisson's ratio were calculated.The results revealed that the compressive strength of PCM-18 and PCM-10 increased with decreasing of temperature,while PCM-28 showed a decreasing trend in compressive strength with decreasing of temperature.Furthermore,under uniaxial compression conditions,PCM-28 and PCM-18 exhibited four distinct stages in their stress-strain curves:compaction stage,elastic deformation stage,crack propagation stage and post-crack failure stage,ultimately resulting in brittle failure.However,PCM-10 transitioned into the plastic stage after the compaction stage and elastic deformation stage,with the curve development approaching horizontal,and no significant cracks appeared throughout the process.

关 键 词：相变材料 石蜡 机械性能 弹性模量 泊松比 烷烃 测量 数值模拟 

分 类 号：TQ026[化学工程] TU502.6[建筑科学—建筑技术科学] TE626.88[石油与天然气工程—油气加工工程]