期刊论文

Study on dynamic viscoelasticity of an epoxy resin building repair adhesive

中文

中南林业科技大学学报

1673-923X

2019

39

4

112-116

10.14067/j.cnki.1673-923x.2019.04.019

湖南省科技厅科技计划项目(2010GK3110) 湖南省教育厅科技计划重点项目(10A130).

本校为第一机构

环氧树脂胶粘剂具有许多修补或加固结构物所需的独特性能。由于其具有极为典型的黏弹性力学性能,研究环氧树脂胶粘剂在老化过程中的动态力学行为不仅具有理论意义,而且具有广阔的工程应用前景。实验采用复配胺类固化剂,自制了一种环氧树脂基修补胶,研究了其动态黏弹性。根据时间-温度等效原理建立了50℃下胶粘剂的频率-模量主曲线,分别使用整数阶和不同阶数的分数阶Zener流变模型对主曲线进行拟合分析。研究表明,分数阶Zener模型在较宽频率范围内对主曲线有较好的拟合效果,且分数阶数越低,拟合效果越好。

Epoxy resin adhesive has many unique properties required to repair or reinforce concrete structures and cracks, especially, it has typical viscoelastic properties. Studying the dynamic mechanical behavior of epoxy resin adhesive in the aging process is not only of theoretical significance, but also has broad engineering application prospects. In the experiments, a kind of epoxy resin-based repairing agent was prepared by using a compound amine curing agent, and its dynamic viscoelasticity was studied. According to the time-temperature equivalen...