桥梁加固用环氧树脂胶粘剂体系固化动力学研究  

Study on curing dynamics of epoxy resin adhesive system for bridge reinforcement

作　　者：张勇[1] Zhang Yong(Department of Hotel Engineering,Qingdao Vocational and T echnical College of Hotel Management,Qingdao 266100,Shandong,China)

机构地区：[1]青岛酒店管理职业技术学院酒店工程学院,山东青岛266100

出　　处：《中国胶粘剂》2021年第1期39-43,共5页China Adhesives

基　　金：山东省交通科技计划项目(2017B99)。

摘　　要：制备了三种温度环境条件固化剂,对照组不经处理直接调配,常温组在19~24℃条件下处理7 d,低温组在4℃条件下处理7 d。将制备完成后的三种固化剂与环氧树脂按照质量比4∶10充分混合,并按照相关规定测试三组试验材料的力学性能,使用差示扫描量热法分析环氧树脂胶粘剂体系的固化动力学性能。研究结果表明:两种温度环境配制的环氧树脂胶粘剂体系的力学性能均有提高,升温速率快,放热峰向高温方向移动;经计算反应活化能为59.79 kJ/mol,反应级数为0.95;低温固化后的试验样品存在明显放热峰,常温固化后的试验样品转变为玻璃化状态。Three kinds of curing agents under different temperature environments were prepared. The control group was prepared directly without treatment. The normal temperature group was treated at 19-24 ℃ for 7 days.The low temperature group was treated at 4 ℃ for 7 days. Three kinds of prepared curing agents were fully mixed with epoxy resin at the mass ratio of 4∶10,and the mechanical properties of three groups of test material were tested according to the relevant provisions. The curing dynamics properties of epoxy resin adhesive system was analyzed by differential scanning calorimetry. The research results showed that the mechanical properties of epoxy resin adhesive system prepared under two temperature environments were both improved,the heating rate was fast,and the exothermic peak moved to the high temperature direction. The activation energy was 59.79 kJ/mol,and the reaction order was 0.95 after calculation. There existed obvious exothermic peak in the sample cured at low temperature,and the sample cured at room temperature was turned into glass state.

关 键 词：桥梁加固 环氧树脂 胶粘剂体系 固化 动力学 反应活化能 

分 类 号：TQ433[化学工程]