热处理条件对环氧锚固胶热变形温度的影响  

Effect of thermal treatment conditions on the heat deformation temperature of epoxyanchorage adhesive

作　　者：曾兵 王先前 姚淑芳 安绍都 李强 ZENG Bing;WANG Xian-qian;YAO Shu-fang;AN Shao-du;LI Qiang(China Academy of Building Research,Beijing 100013,China;Shenzhen Municipal Design and Research Institute Co.,Ltd.,Shenzhen 518029,China;CABR Testing Center Co.,Ltd.,Beijing 100013,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013 [2]深圳市市政设计研究院有限公司,广东深圳518029 [3]建研院检测中心有限公司,北京100013

出　　处：《热固性树脂》2023年第4期26-30,共5页Thermosetting Resin

基　　金：中国建筑科学研究院有限公司青年科研基金项目(20200112331030037,20210112331030022);住房和城乡建设部科学技术项目(2019-K-020);建研院检测中心有限公司自筹科研基金项目(20220126977130006)。

摘　　要：为研究固化工艺对环氧锚固胶耐热性能的影响,采用控制变量法,对标态养护后的试件在不同温度(60~100℃)下处理0~10 h后进行热变形温度(HDT)测试。采用DMA表征其动态热机械性能,由傅里叶变换红外光谱表征其分子结构变化并计算得到相对固化度。结果表明:固化工艺,尤其是热处理温度和时间对HDT的影响十分显著。适当的加热处理可有效提高环氧锚固胶的HDT,热处理温度越接近材料的玻璃化转变温度,越有利于获得理想的HDT。为使试件获得较为理想的热稳定性,同时保证材料其他物理力学性能不发生显著变化,最佳热处理工艺为60℃下保温4 h。In order to study the effects of curing process on the heat resistance of epoxy anchoring adhesive,the thermal deformation temperatures(HDT)of the specimens after standard curing and treatment at different temperatures(60-100℃)for 0-10 h were tested by the control variable method.The dynamic thermo-mechanical properties were characterized by DMA,the molecular structure changes were characterized by Fourier transform infrared spectroscopy and the relative curing degree was calculated.The results showed that the curing process,especially the heat treatment temperature and time,had significant effects on the HDT.Appropriate heat treatment could effectively improve the HDT of epoxy anchoring adhesive.The closer the heat treatment temperature was to the glass transition temperature of the material,the more favorable it was to obtain the ideal HDT.In order to obtain ideal thermal stability of the specimen and ensure that other physical and mechanical properties of the material do not change significantly,the optimal heat treatment treatment condition is 60℃for 4 h.

关 键 词：环氧锚固胶 热变形温度 热处理温度 热处理时间 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]