钛基金属有机框架增强环氧纳米复合材料的制备及性能研究  

Preparation and properties of titanium-based metal-organic framework reinforced epoxy nanocomposites

作　　者：蒋旭辉 刘洋 张鹏 胡心雨 Jiang Xuhui;Liu Yang;Zhang Peng;Hu Xinyu(PowerChina Chongqing Engineering Corporation Limited,Chongqing 400060;Chongqing Research Institute of HIT,Chongqing 400000)

机构地区：[1]中国电建集团重庆工程有限公司,重庆400060 [2]哈尔滨工业大学重庆研究院,重庆400000

出　　处：《化工新型材料》2024年第S01期378-383,共6页New Chemical Materials

基　　金：重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX1639);重庆市建设科技计划项目(城科字2022第1-1号)。

摘　　要：为解决环氧树脂修复混凝土存在的韧性差的问题,展开无机纳米粒子改性环氧树脂韧性研究。采用水热法合成钛基金属有机框架(NH_(2)-MIL-125),与环氧树脂物理共混制备室温可固化NH_(2)-MIL-125/环氧纳米复合材料,并利用差示量热(DSC)、动态热机械分析(DMA)和扫描电镜(SEM)等手段,探究NH_(2)-MIL-125对环氧树脂性能的影响规律。结果表明:NH_(2)-MIL-125有效改善了环氧树脂的微观形貌,显著增强环氧树脂的韧性与粘结性能,poly(0.5MIL/EP)的冲击强度增加至16.8kJ/m^(2),拉伸剪切强度提高至20.8MPa,抗压强度达95.2MPa,为纳米增韧环氧树脂提供新思路。In order to solve the problem of poor toughness of epoxy resin repaired concrete,the study of toughness of epoxy resin modified by inorganic nanoparticles was carried out.The titanium-based metal-organic framework(NH_(2)-MIL-125)was successfully synthesized by hydrothermal method,and the room-temperature curable NH_(2)-MIL-125/epoxy nanocomposites were prepared by physical blending with epoxy resin.The DSC,DMA and SEM were used to explore the effect of NH_(2)-MIL-125 on the properties of epoxy resins.The results showed that NH_(2)-MIL-125 effectively improved the micromorphology of epoxy resin,and significantly enhanced the toughness and adhesion properties of epoxy resin.The impact strength of poly(0.5MIL/EP)was increased to 16.8kJ/m^(2),the tensile shear strength was increased to 20.8MPa,and the compressive strength was 95.2MPa.This provided a new idea for nano-toughened epoxy resins.

关 键 词：NH 2-MIL-125 环氧树脂 纳米增韧 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]