摘要
顶管施工是一种不开挖的管道施工技术,对钢质管道外涂层的耐磨性、粘结力和机械强度的要求均较普通管道保护要求高,以保护钢管在使用期间不被腐蚀破坏。本研究特别设计了顶管专用ARO(Abrasion Resistance Outerlayer)涂层,提出了涂层的配方设计思路、对配方所涉及的主要组成的作用和选择优化进行了讨论,得到了性能满足顶管施工要求的外防护层,既具有单层熔结环氧粉末涂料(FBE)优异的附着力及防腐性能,又具有双层FBE优异的硬度与耐磨性,且仅需单层涂装即可达到超过1000μm的涂层厚度,同时仍能保持涂层的柔韧性,是钢顶管施工的一种理想的选择。
Pipe jacking construction is a kind of trenchless pipe construction technology.The requirements for abrasion resistance,adhesion and mechanical strength of the outer coating of steel pipe are higher than those common protection,so as to protect the steel pipes from corrosion and damage in the service life.In this study,the special ARO(Abrasion Resistance Outerlayer)coating for pipe jacking is designed.The formulation design idea of ARO coating,the function of the main components involved in the formulation,and the selection and optimization are discussed.The performance of ARO coating meeting the pipe jacking construction is obtained,which not only has the excellent adhesion and anti-corrosion performance of the single-layer FBE,but also has the excellent hardness and wear resistance of the double-layer FBE,and the coating thickness of more than 1,000μm can be achieved by single-layer coating.It is an ideal choice for steel pipe jacking construction.
作者
师立功
常炳波
Shi Ligong;Chang Bingbo(Beijing Hansbond Chemical Science&Technology Co.,Ltd.,Beijing 102600,China)
出处
《涂层与防护》
2020年第4期24-28,33,共6页
Coating and Protection
