低温固化环氧树脂灌浆材料的性能研究

关键字：低温,固化,环氧树脂,灌浆材料,性能,研究

（1.中科院广州化灌工程有限公司，广东 广州  510650；
2.广东省化学灌浆工程技术研究开发中心，广东 广州  510650；3.中科院广州化学研究所，广东 广州  510650）
 

    摘要：采用硫脲与二乙烯三胺为原料合成硫脲改性胺，然后与多聚甲醛、苯酚进行曼尼斯反应，制得含有硫脲基团的曼尼斯碱作为环氧树脂固化剂，再配以环氧树脂及活性稀释剂制得低温固化环氧树脂灌浆材料。研究了活性稀释剂和固化剂用量对环氧灌浆材料性能的影响。结果表明，浆液的黏度可在500～1000 mPa·s调节，固结体抗压强度≥60 MPa，室温（25 ℃）初凝时间5～10 min可调，低温（5 ℃）初凝时间30～90 min可调，可用于低温环境下的补强加固及堵漏灌浆材料。
    关键词：灌浆材料；环氧树脂；低温固化
    中图分类号：TU472.5        文献标识码:A        文章编号：1001-702X（2017）10-0112-05
 

Study on the properties of low-temperature curing epoxy-resin grouting material
ZENG Juanjuan1，2，YANG Yuanlong1，2，MA Zhe3
（1.Guangzhou Chemical Grouting Engineering Co. Ltd.，CAS，Guangzhou 510650，China；
2.Guangdong Prov. E.R.C. For Chemical Grouting，Guangzhou 510650，China；
3.Guangzhou Chemistry Research Institute of Chinese Academy of Sciences，Guangzhou 510650，China）

    Abstract：A Mannich base with thiourea group had been prepared by Mannich reaction of paraformaldehyde， phenol and thiourea modified amines which were synthesized by thiourea and diethylenetriamine，then，a new kind of low-temperature curing epoxy-resin grouting material was prepared by mixing with epoxy resin and reactive diluents. The effects of reactive diluent and curing agent on the properties of epoxy-resin grouting material were investigated. The results showed that the viscosity was adjusted in 500～1000 mPa·s，the compressive strength of consolidation was greater than or equal to 60 MPa，the initial setting time at room temperature（25 ℃） was adjusted in 5～10 min，and the initial setting time at low temperature（5 ℃） was adjusted in 30～90 min. This grouting material can be used for reinforcing and plugging at low temperature.
    Key words：grouting material，epoxy resin，low-temperature curing