管道防腐层补伤材料密封性能检测研究

Measurement of the sealing performance of patch materials for pipeline anticorrosive coating

介绍了管道防腐层补伤材料密封性能检测方法的建立及其在补伤技术比选研究中的应用情况。通过密封性能试验,考察了3中不同的补伤材料(黏弹体、冷缠带和补伤片)在2种常用防腐层上(环氧粉末、3LPE)的实际密封情况,通过详实的数据表征了补伤材料防腐性能的差异,分析了密封不严的原因。试验结果显示,该试验方法对补伤材料的选择具有明确的指导作用、技术可行性和可靠性强。

The methods for measuring sealing performance of patch materials for pipeline anticorrosive coating,and their applications in the comparison and selection of patch technologies are introduced. The actual sealing performance of three kinds of materials（ viscoelastic material,polyethylene cold-applied tape,polyethylene repair patch） on two commonly uesd pipeline coatings（ FBE and 3LPE） are studied. The difference of three patch materials in anti-corrosion performance are discussed. Their causes for sealing leakage are also analyzed. The results indicate that this test method can be used to guide the selection of patch materials for pipeline anticorrosive coating.