摘要
以环氧化天然橡胶ENR和天然橡胶NR为主要原料制备了一种新型减震橡胶复合材料,并在此基础上设计并制作了减隔震橡胶支座。试验首先对橡胶复合材料配比进行优化,然后对橡胶复合材料性能进行测试,最后对减隔震橡胶支座的竖向压缩性能和水平剪切性能进行研究。结果表明,ENR质量分数为20%时,制备的橡胶复合材料性能最佳,此时橡胶复合材料拉伸强度和断裂伸长率分别为26.2 MPa和762%,老化后拉伸强度和断裂伸长率分别为25.7 MPa和774%;损耗模量表现良好,且损耗模量的Tg逐渐向高温处移动,具备优异的阻尼性能。制作的减隔震橡胶支座竖向压缩力为985.36 kN/mm,表现出良好的减震性能。
A new type of damping rubber composite material was prepared by using epoxidized natural rubber ENR and natural rubber NR as the main raw materials,and on this basis,the seismic isolation rubber bearing was de⁃signed and manufactured.Firstly,the ratio of rubber composite materials was optimized,and then the performance of rubber composite materials was tested.Finally,the vertical compression performance and horizontal shear perfor⁃mance of seismic isolation rubber bearing were studied.The results showed that when the mass fraction of ENR was 20%,the properties of the prepared rubber composites were the best.At this time,the tensile strength and elonga⁃tion at break of the rubber composites were 26.2 MPa and 762%,respectively,and the tensile strength and elongation at break after aging were 25.7 MPa and 774%,respectively.The loss modulus performs well,and the Tg of the loss modulus gradually moves to the high temperature,with excellent damping performance.The vertical compres⁃sion force of the isolation rubber bearing is 985.36 kN/mm,which shows good damping performance.
作者
林珊
郭建涛
武朝军
唐晓勇
LIN Shan;GUO Jiantao;WU Chaojun;TANG Xiaoyong(Guangzhou Metro Design and Research Institute Co.,Ltd.,Guangzhou 510010,China;China Construction Engineering Industrial Technology Research Institute Co.,Ltd.,Beijing 103100,China;Jinan Transportation Development and Investment Co.,Ltd.,Jinan 250014,China)
出处
《粘接》
2025年第8期87-90,共4页
Adhesion
基金
住房和城乡建设部研究开发项目(项目编号:2022-K-044)
山东大学科技局重点研发计划项目(项目编号:2021CXGC011203)。
关键词
改性橡胶
减震材料
减震支坐
阻尼性能
modified rubber
damping material
shock absorption support
damping performance
