桥梁拼接环氧胶的制备及防护性能研究

杨建根, 殳魏, 刘洪义, 徐小梅, 张鸿, 刘栓

doi:10.16577/j.issn.1001-1560.2023.0219

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材料保护 >

2023 , Vol. 56 >Issue 9: 104 - 109

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0219

工艺探讨

桥梁拼接环氧胶的制备及防护性能研究

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(1.桐乡市交通建设投资集团有限公司，浙江桐乡 314500；2.杭州本创科技有限公司，浙江杭州 310013；3.中交第二航务工程勘察设计院有限公司，湖北武汉 430071；4.中国科学院宁波材料技术与工程研究所中国科学院海洋新材料与应用技术重点实验室浙江省海洋材料与防护技术重点实验室，浙江宁波 315201)

刘栓(1986－)，博士，高级工程师，主要从事海洋功能材料的研发及应用，电话:0574－87603879，E-mail:liushuan＠nimte.ac.cn

收稿日期: 2023-03-19

修回日期: 2023-04-12

录用日期: 2023-05-15

网络出版日期: 2023-09-15

基金资助

杭州本创科技公司科技项目；中科院海洋新材料与应用技术重点实验室开放课题资助

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Study on Preparation and Protective Properties of Epoxy Adhesive for Bridge Splicing

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(1.Tongxiang Traffic Construction Investment Group Co.， Ltd.， Tongxiang 314500， China；2.Hangzhou Benchuang Technology Co.， Ltd.， Hangzhou 310013， China；3.The Second Investigation and Design Institute of China Transportation Engineering， Wuhan 430071， China；4.Key Laboratory of Marine Materials and Related Technologies， Zhejiang Key Laboratory of Marine Materials and Protective Technologies，Ningbo Institute of Materials Technologies and Engineering， Chinese Academy of Sciences， Ningbo 315201， China)

Received date: 2023-03-19

Revised date: 2023-04-12

Accepted date: 2023-05-15

Online published: 2023-09-15

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摘要

鉴于海洋大气苛刻的腐蚀环境及钢筋混凝土桥梁长寿命设计要求，对桥梁拼接胶的综合性能要求不断提高。研制了一种海工桥梁拼接用环氧胶，探究了不同固化剂和颜基比(P/B)对环氧胶性能的影响，通过电化学工作站、耐盐水性能和中性盐雾加速试验对环氧胶防腐性能进行了评价。结果表明：研制的环氧胶的拉伸强度和压缩强度分别达到22.1 MPa 和92.7 MPa，分别通过中性盐雾2 000 h 和盐水浸泡2 000 h 试验后，漆膜完整，无腐蚀和剥落迹象。 100 μm 环氧胶在3.5%NaCl 中的电化学腐蚀速率约是纯碳钢的1/1 000，说明研制环氧胶具有良好的腐蚀防护功能。

关键词： 环氧胶; 桥梁拼接段; 中性盐雾; 海洋大气腐蚀

本文引用格式

杨建根, 殳魏, 刘洪义, 徐小梅, 张鸿, 刘栓 . 桥梁拼接环氧胶的制备及防护性能研究[J]. 材料保护, 2023 , 56(9) : 104 -109 . DOI: 10.16577/j.issn.1001-1560.2023.0219

Abstract

In view of the harsh marine atmospheric corrosion environment and the long-life design requirement of reinforced concrete bridges，the requirements for the comprehensive performance of bridge splicing adhesives are constantly increasing.In this research， an epoxy adhesive for offshore bridge splicing was developed， and the effects of different curing agents and pigment to binder ratios(P/B) on the properties of the epoxy adhesive were investigated.The anti-corrosive performance of the epoxy adhesive was evaluated through electrochemical workstation， salt water resistance performance， and neutral salt spray acceleration test.Results showed that the tensile strength and compressive strength of the prepared epoxy adhesive were 22.1 MPa and 92.7 MPa， respectively.After testing with neutral salt spray for 2 000 h and salt water immersion for 2 000 h， the paint film was complete， without corrosion or peeling.The electrochemical corrosion rate of epoxy adhesive with a thickness of 100 μm in 3.5%NaCl was about 1/1 000 of that of pure carbon steel， indicating that the developed epoxy adhesive had good corrosion protection function.

Key words： epoxy adhesive; bridge splicing section; neutral salt spray; marine atmospheric corrosion

参考文献

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ISSN 1001-1560　CN 42-1215/TB
主管部门：中国机械工业联合会
主办单位：武汉材料保护研究所有限公司
编辑出版：《材料保护》编辑部

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